AP Bio Photosynthesis

Plants with the largest amount of which pigment will be best suited for growing conditions where light has a green hue.

• Chlorophyll A

• Chlorophyll B

• Carotenoids

• A combination of all 3

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which product is produced by the splitting of water during the light-dependent reactions of photosynthesis?

• NADPH

• oxygen

• glucose

• carbon dioxide

T or F: Photosynthesis is anabolic and Cellular respiration is catabolic

• True

• False

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NGSS.HS-LS1-7

NGSS.HS-LS2-5

The color of light least effective in driving photosynthesis is _________

• blue

• red

• orange

• green

T or F: The light reactions of Photosynthesis requires ATP.

• True

• False

Tags

NGSS.HS-LS1-5

In a plant cell, where are ATP synthase complexes located?

• thylakoid membranes only

• inner mitochondrial membranes only

• thylakoid membrane and inner mitochondrial membranes

• thylakoid membrane and plasma membranes

Plants obtain CO₂ into the chloroplast by

• active transport

• diffusion

• facilitated diffusion

• endocytosis

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.

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NGSS.HS-LS1-7

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