What is the main job of the electron carriers in cellular respiration?

Transport electrons and hydrogen atoms to the electron transport chain

Capture energy throughout the process of cellular respiration

Provide the reactants for the process of cellular respiration

Pump positive hydrogen ions and shuttle electrons across the electron transport chain and contribute to chemiosmosis

Two different species of bacteria are examined. Scientists find that species X always produces CO 2 and H 2 O during cellular respiration. Species Y always produces ethyl alcohol and CO 2 . Which conclusion can be made from these observations?

Both species X and Y are aerobic.

Both species X and Y are anaerobic.

A weightlifter is using heavy weights in short bursts for a competition. Because his muscle cells are not able to take in enough oxygen to make very much ATP the weightlifter begins to get fatigue in his muscles. Which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event?

As the cells run out of oxygen they switch to anaerobic respiration (fermentation), which allows the cell to make small amounts of ATP in the absence of oxygen.

As the cells run out of oxygen, they die off gradually and the weightlifter's muscles have fewer contracting muscle cells.

The cells will never run out of oxygen if the weightlifter is breathing.

As the cells run out of oxygen, they will continue to make the same amount of ATP, since oxygen is not required to make ATP.

ATP is synthesized when H+ ions move through a channel in ATP synthase

H+ ions serve as the final electron acceptor

a concentration gradient is generated when H+ ions are passively transported from the matrix to the intermembrane space of the mitochondrion

energy is released as H+ ions move freely across the mitochondrial membrane

The main purpose of anaerobic respiration is to

replenish oxaloacetic acid for the Krebs cycle

What is one function of the other pigments besides chlorophyll, in the chloroplast?

to absorb different wavelengths than the chloroplasts

to block damaging wavelengths of light

to provide different colors to the leaves

to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

What is the function of NADP+?

It is a light-reflecting pigment

It acts as long-term energy storage

What is the primary function of the Calvin cycle?

produce simple sugars from carbon dioxide

regenerate ATP for use in the light reactions of photosynthesis

produce carbon dioxide for use in the light reactions of photosynthesis

produce oxygen by oxidizing water

Which of the following is the correct equation for PHOTOSYNTHESIS?

CO 2 + light + H 2 O --> O 2 + glucose

CO 2 + glucose + H 2 O --> O 2 + light

O2 + light + H 2 O --> CO 2 + glucose

CO 2 + O 2 + H 2 O --> Light+ glucose

How are cellular respiration and photosynthesis related, in terms of energy?

The energy captured in photosynthesis is used to power cellular respiration.

The energy transformed in cellular respiration is used to power photosynthesis.

Photosynthesis and respiration perform the same task in terms of energy transformation

Energy is not involved in either photosynthesis or cellular respiration.

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

Enzyme decrease the activation energy of the reaction.

Enzymes increase the energy of the reactants.

Enzymes decrease the energy level of the products.

Enzymes reverse the direction of the reaction.

What is the function of an enzyme?

enzymes speed up chemical reactions

enzymes break themselves into small pieces

enzymes slow down chemical reactions

enzymes combine products to form reactants

Enzymatic reactions can become saturated as substrate concentration increases because

there are a limited number of the enzyme molecules present.

enzymes have the maximum possible number of hydrogen atoms attached to them.

the concentration of substrate reaches a point at which it cannot increase any further.

substrates are inhibitors of enzymes.

the activation energy of the reaction reaches a point at which it cannot be lowered further.

A noncompetitive inhibitor may inhibit binding of a substrate to an enzyme by

changing the shape of the active site.

lowering the activation energy.

increasing the ΔG of the reaction.

Competitive inhibitors of enzymes work by

fitting into a site other than the active site.

altering the shape of the enzyme.

changing the enzyme into an inactive form.

increasing the activation energy of the enzyme-catalyzed reaction.

Enzymes are sensitive to

irreversible inhibitors such as DIPF.

AP Biology Unit 3: Cellular Energetics

Authored by Megan Pope

Biology

9th - 12th Grade

NGSS covered

Used 325+ times

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

How is cellular respiration related to photosynthesis?

Both require oxygen to start

Both utilize chemiosomosis to generate a proton gradient

Both start with glycolysis

Both end with 38 ATP for cells

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements are false?

Glycolysis can occur with or without oxygen

Glycolysis is the first step in both anaerobic and aerobic respiration

Glycolysis occurs in the mitochondria

Glycolysis produces 2 ATP, 2 Pyruvates, and 2 NADH

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What are the products (things that are made) in cellular respiration

ATP

Carbon dioxide (CO₂)

Water

All of the above

Tags

NGSS.HS-LS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Glucose is broken down into pyruvate in a process known as

glycolysis

electron transport

the Krebs cycle

phosphorylation

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

This term refers to the production of ATP without oxygen being present.

anaerobic

prokaryotic

biogenic

organic

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the correct equation for cellular respiration?

6O₂ + C₆H₁₂O₆ -> 6CO₂ + 6H₂O + Energy

6O₂ + C₆H₁₂O₆ + Energy -> 6CO₂ + 6H₂O

6CO₂ + 6H₂O -> 6O₂ + C₆H₁₂O₆ + Energy

6CO₂+ 6H₂O + Energy -> 6O₂ + C₆H₁₂O₆

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is cellular respiration?

the breakdown of glucose to release ATP

the breakdown of glucose to release NADH

the breakdown of glucose to release FADH

the breakdown of glucose to release carbon

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

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AP Biology Unit 3: Cellular Energetics

How is cellular respiration related to photosynthesis?

Which of the following statements are false?

What are the products (things that are made) in cellular respiration

Glucose is broken down into pyruvate in a process known as

This term refers to the production of ATP without oxygen being present.

What is the correct equation for cellular respiration?

What is cellular respiration?

Which of these molecules is released during the Kreb's cycle

What is the main job of the electron carriers in cellular respiration?

Glycolysis is a _______ process

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