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Questions and Answers
What is the main purpose of mitosis?
What is the main purpose of mitosis?
How many unique cells are produced as a result of meiosis?
How many unique cells are produced as a result of meiosis?
Which phase is unique to meiosis I?
Which phase is unique to meiosis I?
What is the outcome of passive transport?
What is the outcome of passive transport?
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During which interphase phase is DNA replicated prior to mitosis or meiosis?
During which interphase phase is DNA replicated prior to mitosis or meiosis?
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What happens during the anaphase of mitosis?
What happens during the anaphase of mitosis?
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Which statement about meiosis is correct?
Which statement about meiosis is correct?
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Which of the following statements about genetic variation is true?
Which of the following statements about genetic variation is true?
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What is the primary outcome of meiosis?
What is the primary outcome of meiosis?
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During which phase of meiosis do homologous chromosomes pair up to form tetrads?
During which phase of meiosis do homologous chromosomes pair up to form tetrads?
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What is 'crossing over' and when does it occur?
What is 'crossing over' and when does it occur?
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What is the result of Cytokinesis in Meiosis II?
What is the result of Cytokinesis in Meiosis II?
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Which statement is true regarding diploid (2n) and haploid (n) cells?
Which statement is true regarding diploid (2n) and haploid (n) cells?
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What key event happens during Anaphase I of meiosis?
What key event happens during Anaphase I of meiosis?
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Which description correctly identifies the stages of meiosis?
Which description correctly identifies the stages of meiosis?
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Which phase occurs last in the meiosis process?
Which phase occurs last in the meiosis process?
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What is the main function of the sodium-potassium pump in active transport?
What is the main function of the sodium-potassium pump in active transport?
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Which process occurs in the mitochondria and produces ATP?
Which process occurs in the mitochondria and produces ATP?
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Which statement regarding glycolysis is accurate?
Which statement regarding glycolysis is accurate?
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What is a byproduct of lactic acid fermentation?
What is a byproduct of lactic acid fermentation?
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What role do chloroplasts play in photosynthesis?
What role do chloroplasts play in photosynthesis?
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Which of the following best describes exocytosis?
Which of the following best describes exocytosis?
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Which statement about cellular respiration is incorrect?
Which statement about cellular respiration is incorrect?
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What is produced as a result of alcoholic fermentation?
What is produced as a result of alcoholic fermentation?
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What is the primary purpose of the cell cycle?
What is the primary purpose of the cell cycle?
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During which phase of the cell cycle is the DNA replicated?
During which phase of the cell cycle is the DNA replicated?
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In which stage of mitosis do chromosomes line up in the middle of the cell?
In which stage of mitosis do chromosomes line up in the middle of the cell?
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What key event occurs during Anaphase?
What key event occurs during Anaphase?
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Which phase of the cell cycle involves the preparation of the cell for mitosis?
Which phase of the cell cycle involves the preparation of the cell for mitosis?
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What happens during cytokinesis?
What happens during cytokinesis?
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Which of the following describes the role of spindle fibers during mitosis?
Which of the following describes the role of spindle fibers during mitosis?
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In which phase of the cell cycle do cells perform their normal functions?
In which phase of the cell cycle do cells perform their normal functions?
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Meiosis produces 2 identical diploid cells.
Meiosis produces 2 identical diploid cells.
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Mitosis involves one division while meiosis involves two divisions.
Mitosis involves one division while meiosis involves two divisions.
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During metaphase, chromosomes align in the center of the cell ensuring proper separation.
During metaphase, chromosomes align in the center of the cell ensuring proper separation.
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Genetic variation occurs during mitosis due to crossing over.
Genetic variation occurs during mitosis due to crossing over.
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The diffusion of water molecules across a membrane is known as osmosis.
The diffusion of water molecules across a membrane is known as osmosis.
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Mitosis results in cells that are genetically different from the parent cell.
Mitosis results in cells that are genetically different from the parent cell.
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Crossing over can occur during meiosis I between homologous chromosomes.
Crossing over can occur during meiosis I between homologous chromosomes.
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In passive transport, energy is required to move molecules across the cell membrane.
In passive transport, energy is required to move molecules across the cell membrane.
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Meiosis results in the formation of two diploid cells.
Meiosis results in the formation of two diploid cells.
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Interphase is divided into four parts: G₁, S, G₂, and M.
Interphase is divided into four parts: G₁, S, G₂, and M.
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Crossing over occurs during Prophase II of meiosis.
Crossing over occurs during Prophase II of meiosis.
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Cytokinesis is the final stage of the cell cycle that produces two identical daughter cells.
Cytokinesis is the final stage of the cell cycle that produces two identical daughter cells.
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Sister chromatids are separated during Anaphase I of meiosis.
Sister chromatids are separated during Anaphase I of meiosis.
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The chromosome number is halved during meiosis.
The chromosome number is halved during meiosis.
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During Anaphase, chromosomes are pulled toward the center of the cell.
During Anaphase, chromosomes are pulled toward the center of the cell.
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Mitosis results in cells that have twice the chromosome number of the original cell.
Mitosis results in cells that have twice the chromosome number of the original cell.
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Meiosis II occurs after cytokinesis has not yet happened.
Meiosis II occurs after cytokinesis has not yet happened.
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Meiosis produces gametes necessary for sexual reproduction.
Meiosis produces gametes necessary for sexual reproduction.
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DNA replication occurs during the G₂ phase of the cell cycle.
DNA replication occurs during the G₂ phase of the cell cycle.
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In Metaphase, spindle fibers attach to the centromeres of each chromosome.
In Metaphase, spindle fibers attach to the centromeres of each chromosome.
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Meiosis is a process that only occurs in somatic cells.
Meiosis is a process that only occurs in somatic cells.
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Tetrads are formed during Metaphase I of meiosis.
Tetrads are formed during Metaphase I of meiosis.
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Interphase prepares the cell to undergo mitosis by checking for DNA errors.
Interphase prepares the cell to undergo mitosis by checking for DNA errors.
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Telophase involves the chromosomes condensing into X-shaped structures.
Telophase involves the chromosomes condensing into X-shaped structures.
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Facilitated diffusion requires energy (ATP) to transport molecules across the cell membrane.
Facilitated diffusion requires energy (ATP) to transport molecules across the cell membrane.
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Photosynthesis occurs in the mitochondria of plant cells.
Photosynthesis occurs in the mitochondria of plant cells.
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Active transport moves molecules from areas of low concentration to areas of high concentration.
Active transport moves molecules from areas of low concentration to areas of high concentration.
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In alcoholic fermentation, pyruvate is converted into lactic acid.
In alcoholic fermentation, pyruvate is converted into lactic acid.
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Glycolysis is the last step in the process of cellular respiration.
Glycolysis is the last step in the process of cellular respiration.
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Exocytosis is a process that cells use to remove waste or send molecules outside the cell.
Exocytosis is a process that cells use to remove waste or send molecules outside the cell.
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Only 2 ATP are produced per glucose molecule during fermentation.
Only 2 ATP are produced per glucose molecule during fermentation.
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Sexual reproduction involves a single parent combining genetic material to produce offspring.
Sexual reproduction involves a single parent combining genetic material to produce offspring.
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What are the three stages of Interphase in the cell cycle?
What are the three stages of Interphase in the cell cycle?
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During which phase of the cell cycle do chromosomes first become visible?
During which phase of the cell cycle do chromosomes first become visible?
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List the stages of mitosis using the acronym PMAT.
List the stages of mitosis using the acronym PMAT.
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What key process occurs during Anaphase?
What key process occurs during Anaphase?
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Define cytokinesis.
Define cytokinesis.
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What is the role of the G₂ phase in the cell cycle?
What is the role of the G₂ phase in the cell cycle?
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What structure forms during Prophase that is essential for chromosome movement?
What structure forms during Prophase that is essential for chromosome movement?
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What is the main difference in the genetic outcome between mitosis and meiosis?
What is the main difference in the genetic outcome between mitosis and meiosis?
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During which phase of meiosis do homologous chromosomes separate?
During which phase of meiosis do homologous chromosomes separate?
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How does the process of crossing over contribute to genetic diversity?
How does the process of crossing over contribute to genetic diversity?
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What happens to DNA before mitosis or meiosis begins?
What happens to DNA before mitosis or meiosis begins?
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What is the result of passive transport across a cell membrane?
What is the result of passive transport across a cell membrane?
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What is the role of spindle fibers during cell division?
What is the role of spindle fibers during cell division?
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How many total cells are produced at the end of meiosis?
How many total cells are produced at the end of meiosis?
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What distinguishes the number of divisions in mitosis from that in meiosis?
What distinguishes the number of divisions in mitosis from that in meiosis?
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What is the significance of crossing over during Meiosis I?
What is the significance of crossing over during Meiosis I?
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How does the chromosome number change during meiosis?
How does the chromosome number change during meiosis?
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Describe what happens during Telophase II of meiosis.
Describe what happens during Telophase II of meiosis.
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What role do spindle fibers play during Metaphase I?
What role do spindle fibers play during Metaphase I?
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How many rounds of cell division occur in meiosis and what are they called?
How many rounds of cell division occur in meiosis and what are they called?
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What is the end product of meiosis in terms of cell type and chromosome number?
What is the end product of meiosis in terms of cell type and chromosome number?
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Explain the term 'tetrads' and when they form during meiosis.
Explain the term 'tetrads' and when they form during meiosis.
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What occurs to the nuclear membrane during prophase in both meiosis I and II?
What occurs to the nuclear membrane during prophase in both meiosis I and II?
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How does facilitated diffusion differ from active transport?
How does facilitated diffusion differ from active transport?
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What is the role of the sodium-potassium pump in cellular function?
What is the role of the sodium-potassium pump in cellular function?
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What is the end result of glycolysis, and where does it take place?
What is the end result of glycolysis, and where does it take place?
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Explain what happens during fermentation when oxygen is low.
Explain what happens during fermentation when oxygen is low.
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What is the function of chloroplasts in photosynthesis?
What is the function of chloroplasts in photosynthesis?
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Describe the process of exocytosis and its purpose in a cell.
Describe the process of exocytosis and its purpose in a cell.
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What overall process occurs in the mitochondria, and what is its main product?
What overall process occurs in the mitochondria, and what is its main product?
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How does sexual reproduction differ from asexual reproduction?
How does sexual reproduction differ from asexual reproduction?
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What is the cell cycle?
What is the cell cycle?
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What is the acronym used to remember the stages of the cell cycle?
What is the acronym used to remember the stages of the cell cycle?
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What are the three parts of interphase?
What are the three parts of interphase?
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What happens during the G1 phase of the cell cycle?
What happens during the G1 phase of the cell cycle?
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During the P phase of mitosis, what happens to the DNA?
During the P phase of mitosis, what happens to the DNA?
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During the M phase of mitosis, what happens to the chromosomes?
During the M phase of mitosis, what happens to the chromosomes?
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During the A phase of mitosis, what happens to the sister chromatids?
During the A phase of mitosis, what happens to the sister chromatids?
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What is mitosis?
What is mitosis?
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What are the two types of cells involved in meiosis?
What are the two types of cells involved in meiosis?
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How many unique haploid cells does meiosis create from one diploid cell?
How many unique haploid cells does meiosis create from one diploid cell?
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During prophase I of meiosis, what happens to homologous chromosomes?
During prophase I of meiosis, what happens to homologous chromosomes?
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During Metaphase I of meiosis, where do the homologous chromosome pairs line up?
During Metaphase I of meiosis, where do the homologous chromosome pairs line up?
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During Anaphase I of meiosis, what happens to the homologous chromosomes?
During Anaphase I of meiosis, what happens to the homologous chromosomes?
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What happens during telophase I of meiosis?
What happens during telophase I of meiosis?
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During prophase II of meiosis, what happens to the chromosomes?
During prophase II of meiosis, what happens to the chromosomes?
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During metaphase II of meiosis, where do the chromosomes line up?
During metaphase II of meiosis, where do the chromosomes line up?
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What happens to the sister chromatids during anaphase II of meiosis?
What happens to the sister chromatids during anaphase II of meiosis?
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Which of the following is NOT a feature of mitosis?
Which of the following is NOT a feature of mitosis?
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During what phase of interphase is DNA copied?
During what phase of interphase is DNA copied?
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What are the two main types of transport across the cell membrane?
What are the two main types of transport across the cell membrane?
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What is diffusion?
What is diffusion?
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What is facilitated diffusion?
What is facilitated diffusion?
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What is active transport?
What is active transport?
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Give an example of active transport.
Give an example of active transport.
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What is cellular respiration?
What is cellular respiration?
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What is the equation for cellular respiration?
What is the equation for cellular respiration?
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What is glycolysis?
What is glycolysis?
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What is fermentation?
What is fermentation?
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What is photosynthesis?
What is photosynthesis?
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What is the equation for photosynthesis?
What is the equation for photosynthesis?
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What are the two main types of reproduction?
What are the two main types of reproduction?
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What is sexual reproduction?
What is sexual reproduction?
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How many genetically unique haploid cells does meiosis create?
How many genetically unique haploid cells does meiosis create?
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Where do passive and active transport occur across the cell membrane?
Where do passive and active transport occur across the cell membrane?
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What do cellular respiration and photosynthesis rely on?
What do cellular respiration and photosynthesis rely on?
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What happens in sexual reproduction involving the egg and sperm?
What happens in sexual reproduction involving the egg and sperm?
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What is the process that a cell goes through to grow, copy its DNA, and divide into two new cells?
What is the process that a cell goes through to grow, copy its DNA, and divide into two new cells?
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What is the middle of the cell called?
What is the middle of the cell called?
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What is the process of nuclear division in eukaryotic cells that creates two identical cells with the same number of chromosomes as the original cell?
What is the process of nuclear division in eukaryotic cells that creates two identical cells with the same number of chromosomes as the original cell?
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What is the process of cell division that produces gametes (sperm and egg cells) for sexual reproduction?
What is the process of cell division that produces gametes (sperm and egg cells) for sexual reproduction?
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Which of the following describes a diploid cell?
Which of the following describes a diploid cell?
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Which type of cell division involves the separation of homologous chromosomes?
Which type of cell division involves the separation of homologous chromosomes?
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Which type of cell division involves the separation of sister chromatids?
Which type of cell division involves the separation of sister chromatids?
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What are the four stages of mitosis in order?
What are the four stages of mitosis in order?
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What happens to chromosomes during prophase of mitosis?
What happens to chromosomes during prophase of mitosis?
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Where do chromosomes line up during metaphase of mitosis?
Where do chromosomes line up during metaphase of mitosis?
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What happens to sister chromatids during anaphase of mitosis?
What happens to sister chromatids during anaphase of mitosis?
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What is the name for the process where a cell’s vesicles release their contents outside the cell?
What is the name for the process where a cell’s vesicles release their contents outside the cell?
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What is the name for the series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP?
What is the name for the series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP?
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What is the first step in cellular respiration that occurs in the cytoplasm?
What is the first step in cellular respiration that occurs in the cytoplasm?
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What is the reaction that eukaryotic and prokaryotic cells use to obtain energy from food when oxygen levels are low?
What is the reaction that eukaryotic and prokaryotic cells use to obtain energy from food when oxygen levels are low?
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What is the process by which plants, algae, and some bacteria use sunlight to create their own food?
What is the process by which plants, algae, and some bacteria use sunlight to create their own food?
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What is the name for the first cell of a new organism that is formed during fertilization?
What is the name for the first cell of a new organism that is formed during fertilization?
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Which type of reproduction involves two parents?
Which type of reproduction involves two parents?
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What is the process that occurs in both animals and plants where molecules are moved across the cell membrane?
What is the process that occurs in both animals and plants where molecules are moved across the cell membrane?
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What is the process by which cells release materials outside the cell?
What is the process by which cells release materials outside the cell?
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What organelle is responsible for converting energy into ATP through cellular respiration and photosynthesis?
What organelle is responsible for converting energy into ATP through cellular respiration and photosynthesis?
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What combines the egg and sperm to form a zygote in sexual reproduction?
What combines the egg and sperm to form a zygote in sexual reproduction?
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Meiosis produces two genetically identical daughter cells.
Meiosis produces two genetically identical daughter cells.
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Mitosis produces four unique haploid cells.
Mitosis produces four unique haploid cells.
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Passive and active transport occur only in animal cells.
Passive and active transport occur only in animal cells.
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Exocytosis is the process by which materials enter a cell.
Exocytosis is the process by which materials enter a cell.
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Mitochondria are responsible for photosynthesis.
Mitochondria are responsible for photosynthesis.
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Fertilization occurs during asexual reproduction.
Fertilization occurs during asexual reproduction.
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Study Notes
Cell Cycle
- The cell cycle is the process cells undergo to grow, duplicate DNA, and divide into two new cells. This ensures healthy cells and organism growth/repair.
Phases of the Cell Cycle
- Interphase is broken into three stages: G1 (Growth 1), S (Synthesis), and G2 (Growth 2).
- G1: Cell growth, normal functions, and production of new organelles.
- S: DNA replication, creating a complete set for each new cell.
- G2: Further cell growth, DNA error checking, and preparation for mitosis.
- Mitosis (PMAT-C):
- Prophase: DNA coils into chromosomes, the nucleus breaks down, and spindle fibers form.
- Metaphase: Chromosomes line up in the middle of the cell.
- Chromosomes line up along the metaphase plate.
- Spindle fibers attach to the centromeres of the chromosomes.
- Anaphase: Sister chromatids are pulled to opposite cell sides.
- Sister chromatids are pulled apart by spindle fibers.
- Telophase: Two new nuclei form around the separated chromosomes.
- Cytokinesis: Cytoplasm splits, creating two identical daughter cells.
Mitosis
- Mitosis is the process of nuclear division in eukaryotic cells, creating two identical cells with the same number of chromosomes as the original cell.
Meiosis
- Meiosis is a cell division process creating gametes (sperm and egg cells).
- It reduces the chromosome number by half to ensure offspring have the correct number.
- Diploid cells (2n): Contain two sets of chromosomes (one from each parent).
- Haploid cells (n): Contain only one set of chromosomes (half the total number).
- Meiosis occurs in two stages (Meiosis I and Meiosis II).
Steps of Meiosis I
- Prophase I: Homologous chromosomes pair up (tetrads) and exchange genetic material (crossing over). The nuclear membrane breaks down and spindle fibers form.
-
Metaphase I: Homologous chromosome pairs line up in the middle of the cell.
- Homologous chromosomes line up in the middle/equatorial plane of the cell.
- Spindle fibers attach to each homologous chromosome.
- Anaphase I: Homologous chromosomes are separated and pulled to opposite sides of the cell.
- Telophase I: Two nuclei form, each with half the original number of chromosomes (haploid). Cytokinesis follows.
Steps of Meiosis II
- Prophase II: Chromosomes condense again, spindle fibers form, and the nuclear membrane breaks down.
-
Metaphase II: Chromosomes line up in the middle of each haploid cell.
- Chromosomes line up individually/singly in the middle of each cell.
- Anaphase II: Sister chromatids are pulled apart, separating to opposite poles of the cell.
- Telophase II: Four new nuclei form around the separated chromatids. Cytokinesis results in four unique haploid cells.
Meiosis vs. Mitosis
- Mitosis creates identical diploid cells for growth and repair.
- Meiosis creates unique haploid cells for sexual reproduction.
DNA in Cell Division
- DNA replicates during the S phase of interphase, prior to both mitosis and meiosis.
- DNA condenses into chromosomes before cell division.
Passive & Active Transport
- Cell membranes regulate what enters and leaves cells, maintaining cell balance.
- Passive Transport: Does not require energy (e.g., diffusion, osmosis, facilitated diffusion).
- Active Transport: Requires energy (e.g., sodium-potassium pumps) to move molecules against their concentration gradient.
Exocytosis
- Process where vesicles release their contents outside the cell (e.g., hormones, proteins).
Cellular Respiration
- Chemical reactions converting food energy into ATP within the mitochondria.
- Equation: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP
- Glycolysis: First step, breaking down glucose into smaller molecules.
- Fermentation: Energy production when oxygen is low, produces less ATP (e.g., lactic acid, alcohol fermentation).
Photosynthesis
- Process plants, algae, and some bacteria use to create their own food, using sunlight.
- Equation: CO2 + H2O + Sunlight → C6H12O6 + O2
- Occurs in chloroplasts, but ATP is produced via cellular respiration.
Sexual & Asexual Reproduction
- Sexual reproduction: Two parents, offspring are genetically diverse.
- Asexual reproduction: One parent, offspring are genetically identical.
- Sexual reproduction involves egg and sperm combining, while asexual reproduction produces clones.
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Description
Explore the stages of the cell cycle, including interphase and mitosis. Learn about G1, S, and G2 phases along with the detailed steps of mitosis. This quiz will reinforce your understanding of cellular growth and division.