Explain the significance of ATP in both photosynthesis and cellular respiration.

ATP serves as the main energy currency for cellular activities in both processes.

ATP is a waste product in both processes.

ATP is only produced during photosynthesis.

ATP is used exclusively in cellular respiration.

What role does oxygen play in the electron transport chain during aerobic respiration?

It serves as the final electron acceptor.

It is involved in the Krebs cycle.

It is produced during photosynthesis.

The main purpose of photosynthesis is:

the conversion of light energy into chemical energy

the production of oxygen by splitting water molecules

to reduce atmospheric carbon dioxide

to absorb excess sunlight so that the planet doesn't get too hot

Which of the following best describes the role of decomposers in an ecosystem?

Decomposers break down dead plant and animal matter, releasing essential nutrients back into the ecosystem for other organisms to use.

Decomposers do not play a role in ecosystem ecology.

Decomposers consume living organisms and compete with other species for resources.

Decomposers are apex predators that control population sizes of other organisms.

What is the primary function of decomposers in an ecosystem?

Break down dead matter and recycle nutrients

Explain the significance of ATP and NADPH produced during the light-dependent reactions in the context of photosynthesis.

They provide energy and reducing power for the Calvin cycle.

They are used to directly produce glucose.

They are waste products that are expelled from the plant.

They are converted back into water and carbon dioxide.

What are the primary functions of NADH and FADH2 in cellular respiration?

They donate electrons to the Electron Transport Chain.

They act as energy storage molecules.

They catalyze the reactions of glycolysis.

They are involved in the Calvin cycle.

What do energy pyramids primarily illustrate in an ecosystem?

The flow of energy through trophic levels

The distribution of nutrients among organisms

The genetic diversity of species

The rate of photosynthesis in plants

What is the primary purpose of photosynthesis?

To gather light energy and use it to produce glucose

To gather light energy and use it to produce ATP

To gather light energy and use it to produce oxygen

Energy is released from ATP by:

breaking the bond between the second and third phosphate groups

adding a phosphate group to ADP

storing energy in the form of ATP

If a plant's thylakoid membranes were damaged, what impact would this have on the overall process of photosynthesis?

The light-dependent reactions would be impaired, reducing ATP and NADPH production.

The plant would be unable to perform the Calvin cycle.

The plant would still produce glucose but at a slower rate.

The plant would rely solely on cellular respiration for energy.

The primary function of glycolysis is to

Degrade glucose or glycogen into pyruvate or lactic acid and produce ATP

Process fatty acids to prepare for entrance into the electron transport

Synthesize phosphocreatine from lactic acid

If a plant is exposed to light but is unable to produce ATP and NADPH, what impact would this have on the Calvin cycle?

The Calvin cycle would be unable to synthesize glucose due to lack of energy and reducing power.

The Calvin cycle would proceed normally, as it does not require ATP or NADPH.

The Calvin cycle would produce excess glucose.

The Calvin cycle would only produce ATP.

Explain how NADH and FADH₂ contribute to ATP production during cellular respiration.

They donate electrons to the Electron Transport Chain, which leads to ATP synthesis.

They directly produce ATP through substrate-level phosphorylation.

They are converted into glucose during glycolysis.

They transport oxygen to the mitochondria.

If a cell has a deficiency in Acetyl-CoA production, what impact would this have on the Krebs Cycle and overall ATP production?

The Krebs Cycle would be halted, leading to a significant decrease in ATP production.

The Krebs Cycle would proceed normally, but ATP production would decrease.

The Krebs Cycle would produce excess Acetyl-CoA, increasing ATP production.

What are the two main stages of photosynthesis?

Light-dependent reactions and Calvin cycle

Electron transport chain and fermentation

Photosystem I and Photosystem II

If a cell's Krebs cycle is inhibited, what would be the most immediate effect on the cell's energy production?

Decreased ATP production and reduced electron carriers

Explain the significance of the 10% Rule in the context of energy flow in ecosystems.

It shows the inefficiency of energy transfer between trophic levels.

It illustrates how energy is conserved in ecosystems.

It indicates that all energy is recycled within an ecosystem.

It emphasizes the role of producers in energy transfer.

What is the primary function of Rubisco in the Calvin cycle?

To catalyze the conversion of carbon dioxide into organic molecules

To facilitate the electron transport chain

To break down glucose during glycolysis

If a plant is exposed to increased light intensity, how might this affect the rate of photosynthesis and subsequently the energy available to the next trophic level?

Photosynthesis will increase, resulting in more energy available.

Photosynthesis will decrease, leading to less energy available.

The role of decomposers is to:

decompose dead organic matter and remineralize the materials into nutrients to be used by the primary producers

decompose plants for food for upper animals

transfer energy to the higher trophic levels

partially decompose animals so the bacteria can continue to degrade them

Explain the roles of ATP and NADPH in the context of the Calvin cycle during photosynthesis.

ATP provides energy for the reactions, and NADPH acts as a reducing agent to convert carbon dioxide into glucose.

ATP is used to transport carbon dioxide, while NADPH is involved in oxygen production.

ATP is generated from glucose breakdown, and NADPH is a byproduct of cellular respiration.

Explain the role of NADH in the electron transport chain and how it contributes to ATP production.

NADH donates electrons, which are used to pump protons, creating a gradient that drives ATP synthesis.

NADH directly converts glucose into ATP without any additional processes.

NADH is only involved in glycolysis and does not participate in the electron transport chain.

NADH is produced during the Calvin cycle and is used to fuel cellular respiration.

Photosynthesis and Respiration Practice Test

Authored by Katy Upton

Biology

9th Grade

NGSS covered

Used 3+ times

Photosynthesis and Respiration Practice Test

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the 10% Rule in energy transfer between trophic levels state?

Only 10% of energy is lost as heat during metabolic processes.

10% of the energy from one trophic level is available to the next level.

10% of the total energy in an ecosystem is used for photosynthesis.

10% of energy is stored in the form of ATP during cellular respiration.

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the overall goal of photosynthesis?

to use solar energy to make glucose

To use solar energy to make ATP

To break down glucose to make ATP

To break down glucose to make carbon dioxide and water

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many pyruvate molecules are derived from each molecule of glucose in the process of glycolysis?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which molecule is primarily produced during the electron transport chain in cellular respiration?

NADH

FADH₂

Tags

NGSS.HS-LS1-7

DROPDOWN QUESTION

30 sec • 1 pt

The ultimate source of energy for nearly all living things on earth is (a) .

The sun

Photosynthesis

Chemosynthesis

Plants

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In aerobic metabolism, what is the final end product of the electron transport chain?

lactic acid

water

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which of the following is a product of photosynthesis?

water.

oxygen.

glucose.

NADPH

If none of the above meet the criteria of the question, choose this response.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

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Photosynthesis and Respiration Practice Test

What does the 10% Rule in energy transfer between trophic levels state?

What is the overall goal of photosynthesis?

How many pyruvate molecules are derived from each molecule of glucose in the process of glycolysis?

Which molecule is primarily produced during the electron transport chain in cellular respiration?

The ultimate source of energy for nearly all living things on earth is (a) .

In aerobic metabolism, what is the final end product of the electron transport chain?

Which of the following is a product of photosynthesis?

Explain the significance of ATP in both photosynthesis and cellular respiration.

What role does oxygen play in the electron transport chain during aerobic respiration?

What is the total number of ATP molecules produced during glycolysis, the Krebs Cycle, and the Electron Transport Chain combined?

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