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Questions and Answers
Which of the following is true about negative feedback loops in homeostasis?
Which of the following is true about negative feedback loops in homeostasis?
- They maintain the stability of a system (correct)
- They are less common than positive feedback loops
- They amplify the initial stimulus
- They are only found in animals
What is the main function of the plasma membrane?
What is the main function of the plasma membrane?
- To provide structure and support to the cell
- To regulate the movement of substances into and out of the cell (correct)
- To store genetic information
- To synthesize proteins
Which of the following accurately describes osmosis?
Which of the following accurately describes osmosis?
- It is the movement of water molecules from a hypertonic solution to a hypotonic solution
- It is the movement of solute molecules from an area of higher concentration to an area of lower concentration
- It is the movement of water molecules from a hypotonic solution to a hypertonic solution (correct)
- It is the movement of solute molecules from an area of lower concentration to an area of higher concentration
Which of the following is NOT a common function of all living things?
Which of the following is NOT a common function of all living things?
What is the internal balance or stable internal environment that must be maintained for survival called?
What is the internal balance or stable internal environment that must be maintained for survival called?
Which form of homeostatic regulation corrects variations back to normal range?
Which form of homeostatic regulation corrects variations back to normal range?
What are the anatomical concepts that include anatomical regions, directions, planes, and body cavities of the trunk called?
What are the anatomical concepts that include anatomical regions, directions, planes, and body cavities of the trunk called?
Which subatomic particle is much lighter than protons and orbits around the nucleus at high speed?
Which subatomic particle is much lighter than protons and orbits around the nucleus at high speed?
What is the atomic number of an atom?
What is the atomic number of an atom?
What are ions?
What are ions?
What type of bond is created by the electrical attraction between anions and cations?
What type of bond is created by the electrical attraction between anions and cations?
Which structure is responsible for protein synthesis in a cell?
Which structure is responsible for protein synthesis in a cell?
Which transport process involves the movement of molecules from an area of higher concentration to an area of lower concentration?
Which transport process involves the movement of molecules from an area of higher concentration to an area of lower concentration?
What is the function of the plasma membrane in a cell?
What is the function of the plasma membrane in a cell?
What is the role of the nucleus in a cell?
What is the role of the nucleus in a cell?
Which subatomic particle is responsible for the electrical charge of an atom?
Which subatomic particle is responsible for the electrical charge of an atom?
What is the atomic number of an atom?
What is the atomic number of an atom?
What is the average mass of an element's atoms called?
What is the average mass of an element's atoms called?
Which type of bond is formed by sharing of electrons between atoms?
Which type of bond is formed by sharing of electrons between atoms?
Which type of covalent bond is formed when electrons are shared equally?
Which type of covalent bond is formed when electrons are shared equally?
What is the attraction between a slight positive charge on a hydrogen atom and a slight negative charge on an oxygen or nitrogen atom called?
What is the attraction between a slight positive charge on a hydrogen atom and a slight negative charge on an oxygen or nitrogen atom called?
What is the capacity to perform work called?
What is the capacity to perform work called?
Which of the following is NOT a characteristic of a positive feedback loop?
Which of the following is NOT a characteristic of a positive feedback loop?
Which of the following is an example of an anatomical landmark?
Which of the following is an example of an anatomical landmark?
Which of the following is an example of a covalent bond?
Which of the following is an example of a covalent bond?
Which of the following is a property of water?
Which of the following is a property of water?
Which of the following is a function of the mitochondria?
Which of the following is a function of the mitochondria?
Which of the following is an example of a hypertonic solution?
Which of the following is an example of a hypertonic solution?
Which of the following is a common function of all living things?
Which of the following is a common function of all living things?
Which of the following is NOT a common function of all living things?
Which of the following is NOT a common function of all living things?
What is the state of internal balance or stable internal environment that must be maintained for survival called?
What is the state of internal balance or stable internal environment that must be maintained for survival called?
Which of the following accurately describes negative feedback?
Which of the following accurately describes negative feedback?
What is the increase in size of an organism through cell growth or the addition of new cells called?
What is the increase in size of an organism through cell growth or the addition of new cells called?
Which of the following is true about positive feedback loops in homeostasis?
Which of the following is true about positive feedback loops in homeostasis?
What is the study of life and encompasses common functions of all living things called?
What is the study of life and encompasses common functions of all living things called?
Which of the following is NOT included in anatomical concepts?
Which of the following is NOT included in anatomical concepts?
Which of the following processes is responsible for the movement of molecules from an area of lower concentration to an area of higher concentration?
Which of the following processes is responsible for the movement of molecules from an area of lower concentration to an area of higher concentration?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the structure of the plasma membrane?
Which of the following accurately describes the structure of the plasma membrane?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the role of the nucleus in a cell?
Which of the following accurately describes the role of the nucleus in a cell?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes cellular differentiation?
Which of the following accurately describes cellular differentiation?
Which of the following is NOT a common function of all living things?
Which of the following is NOT a common function of all living things?
What is the state of internal balance or stable internal environment that must be maintained for survival called?
What is the state of internal balance or stable internal environment that must be maintained for survival called?
Which form of homeostatic regulation corrects variations back to normal range?
Which form of homeostatic regulation corrects variations back to normal range?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following subatomic particles is much lighter than protons and orbits around the nucleus at high speed?
Which of the following subatomic particles is much lighter than protons and orbits around the nucleus at high speed?
Which type of bond is created by the electrical attraction between anions and cations?
Which type of bond is created by the electrical attraction between anions and cations?
Which of the following is the atomic number of an atom?
Which of the following is the atomic number of an atom?
What is the attraction between a slight positive charge on a hydrogen atom and a slight negative charge on an oxygen or nitrogen atom called?
What is the attraction between a slight positive charge on a hydrogen atom and a slight negative charge on an oxygen or nitrogen atom called?
Which of the following is NOT a common function of all living things?
Which of the following is NOT a common function of all living things?
Which transport process involves the movement of molecules from an area of higher concentration to an area of lower concentration?
Which transport process involves the movement of molecules from an area of higher concentration to an area of lower concentration?
Which of the following is an example of a hypertonic solution?
Which of the following is an example of a hypertonic solution?
Which of the following accurately describes the function of smooth endoplasmic reticulum in cells?
Which of the following accurately describes the function of smooth endoplasmic reticulum in cells?
What is the function of the Golgi apparatus in a cell?
What is the function of the Golgi apparatus in a cell?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the function of microvilli in cells?
What is the function of the plasma membrane in a cell?
What is the function of the plasma membrane in a cell?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of the nucleus in a cell?
Which of the following accurately describes the function of the nucleus in a cell?
Which of the following accurately describes the function of the plasma membrane in a cell?
Which of the following accurately describes the function of the plasma membrane in a cell?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of the nucleus in a cell?
Which of the following accurately describes the function of the nucleus in a cell?
Which of the following accurately describes the function of epithelial tissue?
Which of the following accurately describes the function of epithelial tissue?
Which of the following accurately describes the function of connective tissue?
Which of the following accurately describes the function of connective tissue?
Which of the following is true about isotopes?
Which of the following is true about isotopes?
Which of the following is true about covalent bonds?
Which of the following is true about covalent bonds?
Which of the following is true about polar covalent bonds?
Which of the following is true about polar covalent bonds?
Which of the following is true about hydrogen bonds?
Which of the following is true about hydrogen bonds?
Which of the following is true about energy?
Which of the following is true about energy?
Which of the following is true about enzymes?
Which of the following is true about enzymes?
Which of the following is true about water?
Which of the following is true about water?
Which of the following accurately describes homeostasis?
Which of the following accurately describes homeostasis?
Which of the following accurately describes negative feedback?
Which of the following accurately describes negative feedback?
Which of the following accurately describes positive feedback?
Which of the following accurately describes positive feedback?
Which of the following accurately describes growth?
Which of the following accurately describes growth?
Which of the following accurately describes responsiveness?
Which of the following accurately describes responsiveness?
Which of the following accurately describes movement?
Which of the following accurately describes movement?
Which of the following accurately describes metabolism?
Which of the following accurately describes metabolism?
Which of the following accurately describes the difference between negative feedback and positive feedback loops in homeostasis?
Which of the following accurately describes the difference between negative feedback and positive feedback loops in homeostasis?
What is the function of the plasma membrane in a cell?
What is the function of the plasma membrane in a cell?
Which of the following accurately describes osmosis?
Which of the following accurately describes osmosis?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of ribosomes in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the difference between ionic bonds and covalent bonds?
Which of the following accurately describes the difference between ionic bonds and covalent bonds?
Which of the following accurately describes the function of the plasma membrane in cells?
Which of the following accurately describes the function of the plasma membrane in cells?
Which of the following accurately describes the function of the nucleus in a cell?
Which of the following accurately describes the function of the nucleus in a cell?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the function of microvilli in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of cilia in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of the endoplasmic reticulum in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes the function of mitochondria in cells?
Which of the following accurately describes cellular differentiation?
Which of the following accurately describes cellular differentiation?
Which of the following accurately describes osmosis?
Which of the following accurately describes osmosis?
Which of the following accurately describes negative feedback?
Which of the following accurately describes negative feedback?
Study Notes
Cell Structure and Tissues
- Enzymes catalyze reactions in cells, with substrates binding to the enzyme's active site.
- The plasma membrane is extremely thin (6nm - 10nm) and composed of lipids, proteins, and carbohydrates.
- Transport processes include diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.
- Osmotic flow is determined by the solute concentration, with isotonic, hypotonic, and hypertonic solutions affecting the cell's shape.
- The nucleus is the control center of the cell and is surrounded by a double membrane called the nuclear envelope.
- Microvilli are small projections of the plasma membrane that increase the surface area of cells.
- Cilia are long extensions of the plasma membrane that can be motile or nonmotile, used for movement and sensing signals.
- Ribosomes are responsible for protein synthesis and can be free or attached to the endoplasmic reticulum.
- The endoplasmic reticulum is a network of intracellular membranes with functions such as synthesis, storage, transport, and detoxification.
- Mitochondria provide energy for the cell through energy-producing reactions.
- Tumors can be benign or malignant, with the latter spreading through invasion and metastasis.
- Cellular differentiation occurs when specific genes are turned off, leading to the specialization of cells into different types and the formation of tissues.
- Epithelial tissue covers external surfaces, connective tissue provides support, mucous and serous membranes line passageways and cavities, synovial membranes protect joints, muscle tissue allows for contraction, and nervous tissue transmits electrical impulses.
Cell Structure and Tissues
- Enzymes catalyze reactions in cells, with substrates binding to the enzyme's active site.
- The plasma membrane is extremely thin (6nm - 10nm) and composed of lipids, proteins, and carbohydrates.
- Transport processes include diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.
- Osmotic flow is determined by the solute concentration, with isotonic, hypotonic, and hypertonic solutions affecting the cell's shape.
- The nucleus is the control center of the cell and is surrounded by a double membrane called the nuclear envelope.
- Microvilli are small projections of the plasma membrane that increase the surface area of cells.
- Cilia are long extensions of the plasma membrane that can be motile or nonmotile, used for movement and sensing signals.
- Ribosomes are responsible for protein synthesis and can be free or attached to the endoplasmic reticulum.
- The endoplasmic reticulum is a network of intracellular membranes with functions such as synthesis, storage, transport, and detoxification.
- Mitochondria provide energy for the cell through energy-producing reactions.
- Tumors can be benign or malignant, with the latter spreading through invasion and metastasis.
- Cellular differentiation occurs when specific genes are turned off, leading to the specialization of cells into different types and the formation of tissues.
- Epithelial tissue covers external surfaces, connective tissue provides support, mucous and serous membranes line passageways and cavities, synovial membranes protect joints, muscle tissue allows for contraction, and nervous tissue transmits electrical impulses.
Cell Structure and Tissues
- Enzymes catalyze reactions in cells, with substrates binding to the enzyme's active site.
- The plasma membrane is extremely thin (6nm - 10nm) and composed of lipids, proteins, and carbohydrates.
- Transport processes include diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.
- Osmotic flow is determined by the solute concentration, with isotonic, hypotonic, and hypertonic solutions affecting the cell's shape.
- The nucleus is the control center of the cell and is surrounded by a double membrane called the nuclear envelope.
- Microvilli are small projections of the plasma membrane that increase the surface area of cells.
- Cilia are long extensions of the plasma membrane that can be motile or nonmotile, used for movement and sensing signals.
- Ribosomes are responsible for protein synthesis and can be free or attached to the endoplasmic reticulum.
- The endoplasmic reticulum is a network of intracellular membranes with functions such as synthesis, storage, transport, and detoxification.
- Mitochondria provide energy for the cell through energy-producing reactions.
- Tumors can be benign or malignant, with the latter spreading through invasion and metastasis.
- Cellular differentiation occurs when specific genes are turned off, leading to the specialization of cells into different types and the formation of tissues.
- Epithelial tissue covers external surfaces, connective tissue provides support, mucous and serous membranes line passageways and cavities, synovial membranes protect joints, muscle tissue allows for contraction, and nervous tissue transmits electrical impulses.
Cell Structure and Tissues
- Enzymes catalyze reactions in cells, with substrates binding to the enzyme's active site.
- The plasma membrane is extremely thin (6nm - 10nm) and composed of lipids, proteins, and carbohydrates.
- Transport processes include diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.
- Osmotic flow is determined by the solute concentration, with isotonic, hypotonic, and hypertonic solutions affecting the cell's shape.
- The nucleus is the control center of the cell and is surrounded by a double membrane called the nuclear envelope.
- Microvilli are small projections of the plasma membrane that increase the surface area of cells.
- Cilia are long extensions of the plasma membrane that can be motile or nonmotile, used for movement and sensing signals.
- Ribosomes are responsible for protein synthesis and can be free or attached to the endoplasmic reticulum.
- The endoplasmic reticulum is a network of intracellular membranes with functions such as synthesis, storage, transport, and detoxification.
- Mitochondria provide energy for the cell through energy-producing reactions.
- Tumors can be benign or malignant, with the latter spreading through invasion and metastasis.
- Cellular differentiation occurs when specific genes are turned off, leading to the specialization of cells into different types and the formation of tissues.
- Epithelial tissue covers external surfaces, connective tissue provides support, mucous and serous membranes line passageways and cavities, synovial membranes protect joints, muscle tissue allows for contraction, and nervous tissue transmits electrical impulses.
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Description
Test your knowledge on cell structure and tissues with this quiz. Learn about enzymes, plasma membrane, transport processes, nucleus, microvilli, cilia, ribosomes, endoplasmic reticulum, mitochondria, tumors, cellular differentiation, and different types of tissues.
