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100

11. Which of the following happens in the electron transport chain?

  1. Electrons travel to the nucleus

  2. Proteins split water into electrons and protons

  3. ATP is produced

  4. CO2 is released

ATP is produced

100

12. What happens during the Calvin cycle?

  1. Glucose is produced from hydrogens and CO2

  2. CO2 is produced from breaking down glucose

  3. Oxygen and hydrogens produce water for the plant

  4. Hydrogens are loaded onto hydrogen carriers

Glucose is produced from hydrogens and CO2

100

13.What is photolysis?

  1. When water splits another molecule in two

  2. When light breaks up glucose molecules

  3. When light splits water

  4. When light energy is created in cellular respiration


When light splits water

100

14. Why is oxygen necessary in cellular respiration?

  1. It is an important reactant of the Krebs cycle

  2. It carries hydrogens from the Krebs cycle to the electron transport chain

  3. It clears used hydrogens out of the electron transport chain, forming water

  4. It bonds with hydrogens during glycolysis

It clears used hydrogens out of the electron transport chain, forming water

100

15. Which of the following does NOT happen in the light-dependent reaction?

  1. NADP+ becomes NADPH

  2. ADP is charged into ATP

  3. Glucose is produced

  4. Oxygen is released

Glucose is produced

200

16. After a period of intense exercise, a medical device detects high levels of lactic acid molecules in your muscles. What caused this?

  1. Anaerobic respiration

  2. Muscle soreness

  3. Cell differentiation

  4. Aerobic respiration

Aerobic respiration

200

17. You put warm water, yeast, and sugar into a plastic resealable bag, suck all of the air out of it, leave it, and watch as the bag inflates so much that it bursts open! What process were the yeast organisms performing?

  1. Aerobic respiration

  2. Photosynthesis

  3. Hypotonic reaction

  4. Anaerobic respiration

Anaerobic respiration

200

18. How can closed terrariums survive for many decades with no added water or air?

  1. The plants and microorganisms recycle water, oxygen, and carbon dioxide through photosynthesis and cellular respiration, since the inputs of cellular respiration are the outputs of photosynthesis, and vice versa.

  2. Plants store unlimited water and oxygen in their tissues, which sustains them indefinitely.

  3. The plants and microorganisms recycle water, oxygen, and carbon dioxide because those are the general inputs for both photosynthesis and cellular respiration.

  4. The sealed environment prevents the need for photosynthesis or respiration. 

The plants and microorganisms recycle water, oxygen, and carbon dioxide through photosynthesis and cellular respiration, since the inputs of cellular respiration are the outputs of photosynthesis, and vice versa.

200

19. Which of the following would be an appropriate description at “A” in the diagram on the previous page?

  1. Carbon dioxide is converted into glucose by decomposers.

  2. Worms eat the dead snake and release the carbon as CO2 through cellular respiration.

  3. The snake undergoes fermentation, which releases carbon into the soil.

  4. Carbon in the soil gets loose and flies into the air. 

Worms eat the dead snake and release the carbon as CO2 through cellular respiration.

200

20. Which of the following would be an appropriate description at “B” in the diagram on the previous page?

  1. The tree takes carbon up by its roots for photosynthesis.

  2. The tree absorbs carbon from sunlight.

  3. The tree takes oxygen into its leaves.

  4. Carbon dioxide from the atmosphere is taken into leaves for photosynthesis.

Carbon dioxide from the atmosphere is taken into leaves for photosynthesis.

300

3. What is the function of cell part C?

  1. To create proteins

  2. To store DNA

  3. To create ribosomes

  4. To turn genes on and off

To create ribosomes

300

4. What is the function of cell part D?

  1. To aid in cell division

  2. To store water and other molecules like glucose in the cell

  3. To carry out photosynthesis

  4. To perform cellular respiration 

To store water and other molecules like glucose in the cell

300

11. When a person becomes dehydrated, their pituitary gland releases antidiuretic hormone (ADH), which tells the kidneys to retain water and reduce urine output. As the body returns to normal hydration levels, ADH secretion decreases. Is this an example of a positive or negative feedback loop?

  1. Positive

  2. Negative

Negative

300

9. What would happen if the endocrine system shut down completely?

  1. The body would lose the ability to produce digestive enzymes, stopping nutrient absorption.

  2. The body would be unable to regulate blood sugar levels.

  3. The immune system would stop functioning, leaving the body vulnerable to infections.

  4. The heart would stop beating, leading to immediate death.

The body would be unable to regulate blood sugar levels.

300

10. If you experience a drop in blood pressure, receptors in your blood vessels send signals to the brain, which triggers a response to increase your heart rate and constrict blood vessels to raise blood pressure. Is this an example of a positive or negative feedback loop?

  1. Positive

  2. Negative

Negative

400

13. What happens to a cell in a hypertonic solution?

  1. The cell shrinks as water leaves.

  2. The cell bursts as water enters.

  3. The cell remains the same size.

  4. The cell absorbs solutes, causing it to burst.

The cell shrinks as water leaves.

400

15. You are planning an investigation into how the body changes in response to different levels of exercise. Which of the following is a good example of a prediction for your experiment?

  1. If people go on long runs, they will be healthy.

  2. The participants who complete the hardest exercises will have the highest increase of heart rate.

  3. Exercise will cause the body to adapt to conditions to maintain homeostasis.

  4. When you exercise, you’ll start to notice changes in your body.

The participants who complete the hardest exercises will have the highest increase of heart rate.

400

17. Which direction will the water flow in the diagram below?

  1. To the left (where there’s low solute concentration)

  2. To the right (where there’s high solute concentration)

  3. No net movement to the left or right

To the right (where there’s high solute concentration)

400

When solutes move from areas of high concentration to low concentration, this is called:

  1. Protein Pump

  2. D

    When solutes move from areas of high concentration to low concentration, this is called:

    1. Protein Pump

    2. Diffusion

    3. Active transport

    4. Osmosis

  3. Active transport

  4. Osmosis

Diffusion

400

5. If a cell in G1 has 40 chromosomes, how many chromosomes will it have in G2?

  1. 40

  2. 20

  3. 80

  4. 120

80

500

6. If a cell in G2 has 50 chromosomes, how many chromosomes will be in each daughter cell after mitosis and cytokinesis?

  1. 50

  2. 25

  3. 100

  4. 10

25

500

  1. Which stage of cell division is shown in the microscope image below?


  1. Anaphase

  2. Prophase 

  3. Metaphase

  4. Telophase

Metaphase

500

18. What is the “volume” of the cell?

  1. Cytoplasm and its contents

  2. Cell membrane

  3. Cell wall

  4. Proteins

Cytoplasm and its contents