Science Class Study Notes Quiz

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Questions and Answers

Which of the following pieces of laboratory equipment should be used to accurately measure length?

  • Graduated cylinder
  • Electronic scale
  • Beaker
  • Metric ruler (correct)
  • Thermometer

Fill in the missing step of the Scientific Method? Make an Observation, Research, Form a Hypothesis, Experiment, Analyze & Report, Repeat Experiment A. Draw Conclusions

E. Skip to Experiment B. Analysis D. Develop a Theory

Ask Questions

127 mL = ?

  • 1.27 L
  • 0.127 L (correct)
  • 0.00127
  • 1270 L
  • 0.0127 L

It is always a good idea to look at who is funding the research to determine if there may be a conflict of interest

<p>True (A)</p> Signup and view all the answers

The scientific journal article you were supposed to read before coming to lab, was about done on 100 men and 100 women from various age groups.

<p>True (A)</p> Signup and view all the answers

Which of the following is not a feature of a microscope that has been put away properly?

<p>Slide left on stage (A)</p> Signup and view all the answers

Bacteria are unicellular.

<p>True (A)</p> Signup and view all the answers

The ocular lens of the microscope is set at 20X.

<p>False (B)</p> Signup and view all the answers

The lens on the microscope that is closest to the specimen are called the:

<p>Objective lens (B)</p> Signup and view all the answers

Which of the following is not one of the 3 domains?

<p>Plantae (B)</p> Signup and view all the answers

Which structures are responsible for locomotion in Euglena?

<p>Flagella (D)</p> Signup and view all the answers

What organelle is responsible for producing energy in the cell?

<p>Mitochondria (B)</p> Signup and view all the answers

Plant cells have a cell wall to protect them from bursting.

<p>True (A)</p> Signup and view all the answers

Osmosis is diffusion of water through a semipermeable membrane.

<p>True (A)</p> Signup and view all the answers

How does increasing the temperature affect the rate of diffusion?

<p>Speeds it up (D)</p> Signup and view all the answers

A rival researcher has secretly switched the solution you use to grow your culture of cells, and when you look through the microscope you notice the cells are all swollen/bursting. The new solution is:

<p>Hypotonic (A)</p> Signup and view all the answers

Solutes that dissolve in water are hydrophobic.

<p>False (B)</p> Signup and view all the answers

Animal cells have a cell wall to protect them from bursting.

<p>False (B)</p> Signup and view all the answers

Mitosis and cytokinesis are important for:

<p>All of the Above (D)</p> Signup and view all the answers

Humans have 46 chromosomes (23 pairs of homologous chromosomes).

<p>True (A)</p> Signup and view all the answers

The daughter cells that are formed after a cell goes through mitosis and cytokinesis, are genetically identical.

<p>True (A)</p> Signup and view all the answers

In which phase of mitosis are sister chromatids pulled apart to opposite sides (poles) of the cell?

<p>Anaphase (A)</p> Signup and view all the answers

Chromosomes spend most of their time in prophase.

<p>False (B)</p> Signup and view all the answers

Replication produces how many double stranded DNA molecules?

<p>Two (E)</p> Signup and view all the answers

Which of the following nucleotide bases does not occur in DNA?

<p>Uracil (A)</p> Signup and view all the answers

Which statement is NOT true about the human karyotype shown above?

<p>This individual has Turner's syndrome (B)</p> Signup and view all the answers

In which phase does crossing over (recombination) occur?

<p>Prophase I (B)</p> Signup and view all the answers

What is separated during the second half of meiosis (Meiosis II) in Anaphase II?

<p>Sister Chromatids (A)</p> Signup and view all the answers

Is the study of hereditary transmission and variation.

<p>Genetics (D)</p> Signup and view all the answers

A phenotype is the visible result of a gene (physical trait).

<p>True (A)</p> Signup and view all the answers

Which is the correct cellular respiration equation?

<p>C6H12O6+ (6) O2 → (6) CO2 + (6) H2O + ATP (B)</p> Signup and view all the answers

Which of the following is not one of the chambers of the heart?

<p>All of the above are chambers of heart (E)</p> Signup and view all the answers

Which are not white blood cells?

<p>Erythrocytes (E)</p> Signup and view all the answers

Antibiotics are effective against bacteria.

<p>True (A)</p> Signup and view all the answers

The ______ immune system is the first line of defense against invading pathogens.

<p>innate (B)</p> Signup and view all the answers

Flashcards

Laboratory equipment for measuring length

A metric ruler is used to accurately measure length.

Scientific Method missing step

Draw conclusions is the missing step.

127 mL to L

127 mL is equal to 0.127 L.

Conflict of interest in research

Researchers should consider funding source for potential conflicts of interest.

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Microscope slide issue

A slide left on a microscope stage is not properly stored.

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Microscope cord

The microscope cord should be unplugged and wrapped neatly.

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Bacteria cell type

Bacteria are unicellular organisms.

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Microscope ocular lens

The ocular lens's magnification is 20X means magnification of 20 times.

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Microscope objective lens

The objective lens is the lens closest to the specimen on a microscope.

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Domains of life

Plantae, Archaea, Bacteria, and Eukarya are the three domains.

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Euglena locomotion

Euglena's movement is by using flagella.

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Cellular energy production

Mitochondria are responsible for producing energy in the cells.

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Plant cell protection

Plant cells have a cell wall to prevent bursting.

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Osmosis definition

Osmosis is the movement of water through a semipermeable membrane.

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Temperature effect on diffusion

Increasing temperature speeds up the rate of diffusion.

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Hypotonic solution effect on cells

Hypotonic solutions cause cells to swell and burst.

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Hydrophobic solutes

Solutes that do not dissolve in water are hydrophobic.

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Animal cell wall protection

Animal cells do not have a cell wall to protect them from bursting.

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Mitosis and cytokinesis function

Mitosis and cytokinesis are essential for growth, repair, and maintenance in human bodies and cells.

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Human chromosomes number

Humans have 46 chromosomes (23 pairs).

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Daughter cells genetic identity in mitosis

Daughter cells formed after mitosis are genetically identical to the parent cell.

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Mitosis phase: sister chromatid separation

Sister chromatids are pulled apart during anaphase of mitosis.

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DNA replication outcome

DNA replication produces two double-stranded DNA molecules.

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DNA nucleotide missing

Uracil is not a nucleotide base found in DNA.

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Meiosis I and crossing over

Crossing over (recombination) occurs in prophase I of meiosis.

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Meiosis II separation

Sister chromatids separate during anaphase II of meiosis.

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Definition of Genetics

Genetics is the study of heredity and variation.

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Phenotype definition

Phenotype is the observable expression of a gene.

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Cellular Respiration Equation

C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP

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Heart chamber

The heart has four chambers: two atria and two ventricles.

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Non-white blood cells

Erythrocytes (red blood cells) are not white blood cells.

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Antibiotics effectiveness

Antibiotics are effective against bacteria, not viruses.

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Innate immune system

The innate immune system is the first line of defense against pathogens.

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Study Notes

Quiz 2 - Study Notes

  • Question 1: The correct laboratory equipment for measuring length is a metric ruler.

  • Question 2: The missing step of the scientific method is "Analyze & Report". The complete method is: Observation, Research, Form Hypothesis, Experiment, Analyze & Report, Repeat Experiment, Draw Conclusions, and sometimes Develop a Theory.

  • Question 3: 127 mL is equal to 0.127 L.

  • Question 4: True. It's important to examine research funding to identify potential conflicts of interest.

  • Question 5: True. The scientific journal article discussed 100 men and 100 women of different ages.

  • Question 6: A microscope stored properly has an unplugged cord, wrapped neatly, and is placed securely in its storage cabinet. A slide left on the stage and all lenses cleaned, are also indicators of proper storage.

  • Question 7: True. Bacteria are single-celled organisms (unicellular).

  • Question 8: True. The ocular lens, the eyepiece lens of a microscope, is often set to 20X magnification.

  • Question 9: The objective lens is closest to the specimen.

  • Question 10: Plantae is not one of the three domains: Bacteria, Archaea, and Eukarya.

  • Question 11: Flagella are responsible for locomotion in Euglena.

  • Question 12: Mitochondria are responsible for producing energy in the cell.

  • Question 13: True. Plant cells have a cell wall for structural support and protection from bursting.

  • Question 14: True. Osmosis is the movement of water across a semipermeable membrane.

  • Question 15: Increasing temperature generally speeds up the rate of diffusion.

  • Question 16: A hypotonic solution causes cells to swell or burst.

  • Question 17: False. Solutes that dissolve in water are hydrophilic.

  • Question 18: False. Animal cells do not have a cell wall.

  • Question 19: Mitosis and cytokinesis are essential for growth and repair in organisms.

  • Question 20: True. Humans have 46 chromosomes, arranged in 23 pairs.

  • Question 21: True. Daughter cells produced during mitosis and cytokinesis are genetically identical to the parent cell.

  • Question 22: Anaphase is the phase where sister chromatids are separated and pulled to opposite poles of the cell.

  • Question 23: False. Chromosomes spend most of their time in interphase, not prophase.

  • Question 24: Replication produces two double-stranded DNA molecules.

  • Question 25: Uracil is the nucleotide base that is not found in DNA.

  • Question 26: The statement that the individual in the karyotype is a female is not necessarily true, and is not the answer.

  • Question 27: Crossing over (recombination) occurs during prophase I of meiosis.

  • Question 28: Sister chromatids are separated during anaphase II of meiosis.

  • Question 29: Genetics is the study of hereditary transmission and variation.

  • Question 30: True. A phenotype is an observable characteristic of an organism.

  • Question 31: The correct cellular respiration equation is: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP

  • Question 32: All the listed parts of the heart are important.

  • Question 33: Erythrocytes (red blood cells) are not white blood cells.

  • Question 34: True. Antibiotics are typically effective against bacterial infections.

  • Question 35: The innate immune system is the body's first line of defense against pathogens.

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