Question 1

Which of the following statements related to photosynthesis is INCORRECT?

Accepted Answer

A)  The first stage of photosynthesis occurs in thylakoid membranes and requires light. 
B)  The second stage of photosynthesis takes place in the stroma and does not require light. 
C)  During the light-dependent reactions, glucose is produced. 
D)  Water molecules are converted to oxygen gas. 
E)  The light independent reactions occur in the stroma. 
A)  The first stage of photosynthesis occurs in thylakoid membranes and requires light. 
B)  The second stage of photosynthesis takes place in the stroma and does not require light. 
C)  During the light-dependent reactions, glucose is produced. 
D)  Water molecules are converted to oxygen gas. 
E)  The light independent reactions occur in the stroma.

Question 2

Match between columns
                        Premises: Process that fixes carbon twice.
This process leads to the formation of glucose.
This process is catalyzed by an enzyme called rubisco.
Water is split in this process.
Process that is minimized by C4 plants.

Accepted Answer

The Answer of CS1U1B14S1U1B0 pathway and light-dependent reactions and photorespiration is...

Question 3

How many ATP form in the third stage of aerobic respiration?

Accepted Answer

A)  4 
B)  16 
C)  23 
D)  32 
E)  36 
A)  4 
B)  16 
C)  23 
D)  32 
E)  36

Question 4

Photosynthesis converts the energy of light into

Accepted Answer

A)  pigments. 
B)  chemical bond energy. 
C)  carbohydrates. 
D)  electrons and protons. 
E)  heat energy. 
A)  pigments. 
B)  chemical bond energy. 
C)  carbohydrates. 
D)  electrons and protons. 
E)  heat energy.

Question 5

The splitting of water in photosynthesis

Accepted Answer

A)  releases oxygen. 
B)  results in accumulation of H+ inside the thylakoid. 
C)  releases electrons. 
D)  helps to fill an electron hole in the second photosystem. 
E)  does all of these. 
A)  releases oxygen. 
B)  results in accumulation of H+ inside the thylakoid. 
C)  releases electrons. 
D)  helps to fill an electron hole in the second photosystem. 
E)  does all of these.

Question 6

Which of the following statements is TRUE?

Accepted Answer

A)  In aerobic respiration, ATP is released in the very first reaction. 
B)  The process of glycolysis is restricted to anaerobic organisms. 
C)  Ribose is a substitute for glucose in some pathways. 
D)  Glycolysis occurs free in the mitochondria. 
E)  Enzymes lower the activation energy for each step in the chemical reactions in respiration. 
A)  In aerobic respiration, ATP is released in the very first reaction. 
B)  The process of glycolysis is restricted to anaerobic organisms. 
C)  Ribose is a substitute for glucose in some pathways. 
D)  Glycolysis occurs free in the mitochondria. 
E)  Enzymes lower the activation energy for each step in the chemical reactions in respiration.

Question 7

Which of the following molecules did the first life on earth more likely use for extracting energy and carbon?

Accepted Answer

A)  oxygen 
B)  ATP 
C)  NADPH 
D)  water 
E)  methane 
A)  oxygen 
B)  ATP 
C)  NADPH 
D)  water 
E)  methane

Question 8

The enzyme that fixes carbon dioxide into the Calvin-Benson cycle is

Accepted Answer

A)  rubisco 
B)  carbon dioxide oxidase 
C)  ATP synthase 
D)  carbon hydrogenase 
E)  pepsin 
A)  rubisco 
B)  carbon dioxide oxidase 
C)  ATP synthase 
D)  carbon hydrogenase 
E)  pepsin

Question 9

Which of the following organisms is responsible for the production of cheese, yogurt, and sour cream?

Accepted Answer

A)  Lactobacillus 
B)  Saccrharomyces 
C)  Clostridium 
D)  E. coli 
E)  more than one of these 
A)  Lactobacillus 
B)  Saccrharomyces 
C)  Clostridium 
D)  E. coli 
E)  more than one of these

Question 10

The amount of carbon dioxide in the atmosphere has increased by approximately___ percent since 1990.

Accepted Answer

A)  5 
B)  15 
C)  25 
D)  50 
E)  100 
A)  5 
B)  15 
C)  25 
D)  50 
E)  100

Question 11

In the light-dependent reactions of photosynthesis, how do hydrogen ions get back into the stroma?

Accepted Answer

A)  passive diffusion directly across the thylakoid membrane 
B)  active transport accross the thylakoid membrane 
C)  facilitated diffusion across the thylakoid membrane 
D)  active transport through ATP synthase 
E)  passive diffusion through ATP synthase 
A)  passive diffusion directly across the thylakoid membrane 
B)  active transport accross the thylakoid membrane 
C)  facilitated diffusion across the thylakoid membrane 
D)  active transport through ATP synthase 
E)  passive diffusion through ATP synthase

Question 12

If an aerobic organism stopped taking in oxygen gas, which of the following processes would stop first?

Accepted Answer

A)  the splitting of glucose into two pyruvates 
B)  the reduction of NAD+ to NADH 
C)  the release of carbon dioxide 
D)  electron transfer phosphorylation 
E)  the initiation of the Krebs Cycle 
A)  the splitting of glucose into two pyruvates 
B)  the reduction of NAD+ to NADH 
C)  the release of carbon dioxide 
D)  electron transfer phosphorylation 
E)  the initiation of the Krebs Cycle

Question 13

For a glucose molecule which is completely oxidized during the process of cellular respiration, what is the correct sequence of series of reactions?
I. glycolysis
II. phosphorylation
III. Krebs cycle

Accepted Answer

A)  I >>> II >>> III 
B)  I >>> III >>> II 
C)  II >>> I >>> III 
D)  II >>> III >>> I 
E)  III >>> I >>> II 
A)  I >>> II >>> III 
B)  I >>> III >>> II 
C)  II >>> I >>> III 
D)  II >>> III >>> I 
E)  III >>> I >>> II

Question 14

Photosystems are mainly

Accepted Answer

A)  a grouping of energy-trapping molecules. 
B)  enzymes for splitting water. 
C)  a cluster of ATP molecules. 
D)  a sugar assembly site. 
E)  assemblies of thylakoids. 
A)  a grouping of energy-trapping molecules. 
B)  enzymes for splitting water. 
C)  a cluster of ATP molecules. 
D)  a sugar assembly site. 
E)  assemblies of thylakoids.

Question 15

The carbon dioxide acceptor in the Calvin-Benson cycle of photosynthesis is

Accepted Answer

A)  phosphoglycerate (PG
A) . 
B)  ribulose bisphosphate (RuBP). 
C)  phosphoglyceraldehyde (PGAL). 
D)  glucose. 
E)  phosphoenolpyruvate. 
A)  phosphoglycerate (PG
A) . 
B)  ribulose bisphosphate (RuBP). 
C)  phosphoglyceraldehyde (PGAL). 
D)  glucose. 
E)  phosphoenolpyruvate.

Question 16

After a meal,

Accepted Answer

A)  ATP production slows. 
B)  blood glucose levels remain constant. 
C)  insulin levels rise. 
D)  glycogen is used. 
E)  glucagon levels rise. 
A)  ATP production slows. 
B)  blood glucose levels remain constant. 
C)  insulin levels rise. 
D)  glycogen is used. 
E)  glucagon levels rise.

Question 17

Photosystems are located in

Accepted Answer

A)  the first chloroplastic outer membrane. 
B)  the second chloroplastic outer membrane. 
C)  the stroma. 
D)  the thylakoid membranes. 
E)  the intermembrane space. 
A)  the first chloroplastic outer membrane. 
B)  the second chloroplastic outer membrane. 
C)  the stroma. 
D)  the thylakoid membranes. 
E)  the intermembrane space.

Question 18

According to evidence from ice layers from the Antarctic, atmospheric carbon dioxide levels have been rising since

Accepted Answer

A)  the dinosaurs went extinct. 
B)  for the last 10, 000 years. 
C)  the industrial revolution began. 
D)  the 1970s. 
E)  human evolved 200, 000 years ago. 
A)  the dinosaurs went extinct. 
B)  for the last 10, 000 years. 
C)  the industrial revolution began. 
D)  the 1970s. 
E)  human evolved 200, 000 years ago.

Question 19

Most of the colors we see around us result from

Accepted Answer

A)  reflected light. 
B)  direct sunlight. 
C)  absorbed light. 
D)  the inherent color of the objects we are looking at. 
E)  a combination of absorbed and reflected light. 
A)  reflected light. 
B)  direct sunlight. 
C)  absorbed light. 
D)  the inherent color of the objects we are looking at. 
E)  a combination of absorbed and reflected light.

Question 20

The net result of glycolysis is

Accepted Answer

A)  2 NADH, 2 ATP, and 2 pyruvates 
B)  8 NADH, 2 ATP, and 6 carbon dioxides 
C)  36 ATP 
D)  2 NADH, 4 ATP, and 2 pyruvates 
E)  2 NADH, 2 ATP, and 2 acetyl-CoAs 
A)  2 NADH, 2 ATP, and 2 pyruvates 
B)  8 NADH, 2 ATP, and 6 carbon dioxides 
C)  36 ATP 
D)  2 NADH, 4 ATP, and 2 pyruvates 
E)  2 NADH, 2 ATP, and 2 acetyl-CoAs

Exam 5: Capturing and Releasing Energy

Which of the following statements related to photosynthesis is INCORRECT?

How many ATP form in the third stage of aerobic respiration?

Photosynthesis converts the energy of light into

The splitting of water in photosynthesis

Which of the following statements is TRUE?

Which of the following molecules did the first life on earth more likely use for extracting energy and carbon?

The enzyme that fixes carbon dioxide into the Calvin-Benson cycle is

Which of the following organisms is responsible for the production of cheese, yogurt, and sour cream?

The amount of carbon dioxide in the atmosphere has increased by approximately___ percent since 1990.

In the light-dependent reactions of photosynthesis, how do hydrogen ions get back into the stroma?

If an aerobic organism stopped taking in oxygen gas, which of the following processes would stop first?

For a glucose molecule which is completely oxidized during the process of cellular respiration, what is the correct sequence of series of reactions? I. glycolysis II. phosphorylation III. Krebs cycle

Photosystems are mainly

The carbon dioxide acceptor in the Calvin-Benson cycle of photosynthesis is

After a meal,

Photosystems are located in

According to evidence from ice layers from the Antarctic, atmospheric carbon dioxide levels have been rising since

Most of the colors we see around us result from

The net result of glycolysis is

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