Photosynthesis Reading Quiz AP Bio (Unit 3 Standard D)

A researcher claims that increased atmospheric carbon dioxide levels cause increased growth rates in plants.

Which of the following statements best supports the researcher’s claim?

• Atmospheric carbon dioxide is produced by the burning of fossil fuels, which are formed from the remains of living organisms such as plants.

• Atmospheric carbon dioxide is a byproduct of cellular respiration, which is a metabolic process that occurs in plants and other living organisms.

• Atmospheric carbon dioxide typically enters plant leaves through stomata, which plants rely on for regulating gas exchange with the atmosphere.

• Atmospheric carbon dioxide is the raw material for photosynthesis, which plants rely on for producing sugars and other organic compounds.

Tags

NGSS.HS-LS2-5

In chloroplasts, ATP is synthesized from ADP plus inorganic phosphate (Pi) in a reaction catalyzed by ATP synthase molecules that are embedded in the thylakoid membrane. Which of the following statements provides evidence to support the claim that no ATP will be synthesized in the absence of a proton gradient across the thylakoid membrane?

• Blocking electron flow from one carrier to the next in the electron transport chains blocks formation of a proton gradient in the thylakoid.

• Increasing the proton concentration difference across the thylakoid membrane is not associated with a parallel increase in the rate of ATP synthesis.

• No ATP is synthesized when channel proteins that allow the free passage of protons are inserted into the thylakoid membrane.

• No ATP is synthesized while the Calvin cycle is synthesizing carbohydrates and using ATP and NADPH at a high rate.

A scientist claims that Elysia chlorotica, a species of sea slug, is capable of photosynthesis. Which of the following observations provides the best evidence to support the claim?

• Elysia chlorotica will die if not exposed to light.

• Elysia chlorotica grows faster when exposed to light than when placed in the dark.

• Elysia chlorotica grows when exposed to light in the absence of other food sources.

• Elysia chlorotica grows in the dark when food sources are available.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which of the following are REACTANTS of photosynthesis and PRODUCTS of cellular respiration?

• water and carbon dioxide

• sugar and oxygen

• carbon dioxide and oxygen

• sugar and oxygen

Tags

NGSS.HS-LS2-5

To produce one glucose molecule the Calvin cycle must turn

• Once

• Twice

• Three times

• Six times

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

What products are produced in the light-independent reactions of photosynthesis?

• ATP, NADPH, and O2

• ATP and glucose

• ADP, NADP+, and glucose

• oxygen and ADP

Using the diagram, which number represents chemiosmosis?

• 3

• 5

• 7

• 8

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

All of the following statements about a chloroplast and a mitochondrion are true EXCEPT:

• Both use proton gradients for energy production.

• Both contain DNA.

• Both have two phospholipid bilayer membranes.

• Both capture light energy.

• Both synthesize ATP.

Tags

NGSS.HS-LS2-5

Chlorophyll a is typically found in green plants. Which graph represents its absorption spectrum?

• Graph 1

• Graph 2

• Neither graphs

• Both graphs

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which letter in the graph represents active transport?

• B

• C

• E

• H