Biology Photosynthesis and Respiration Quiz

Select the anaerobic pathway.

fermentation

Considering only glycolysis and the conversion of pyruvate molecules to acetyl CoA molecules, how many NADH molecules will be produced from one glucose molecule?

four

Which of the following molecules can be used as a substrate for cellular respiration?

glucose, lipids, proteins and fatty acids

An example of an anabolic reaction is the splitting of a polysaccharide into monosaccharides.

False

A group of thylakoid discs make up:

granum

Which of the following is not one of the four stages of the aerobic respiration of glucose?

hydrolysis

The reactions that occur in the thylakoid membranes are:

light dependent reactions

The Krebs cycle takes place in the

mitochondria

If conditions are aerobic, pyruvate flows directly into the __________ where some of its atoms are converted next to __________.

mitochondria; acetyl coenzyme A

For each acetyl CoA molecule that enters the citric acid cycle, two CO2 molecules are produced.

True

The downhill flow of protons through the ATP synthase complex powers the production of ATP.

True

NADH is formed when NAD+ accepts:

a proton and a pair of electrons

Plants need which of the following to carry on photosynthesis?

both H2O and CO2

The splitting of molecules into smaller components is referred to as:

catabolism

When hydrogen ions (protons) are pumped across the inner mitochondrial membrane, they form a proton gradient. ATP is then formed by a process known as:

chemiosmosis

The most important pigment(s) for the process of photosynthesis is(are):

chlorophyll a

One product of the initial (first) reaction of the citric acid cycle is:

citrate

A glucose molecule that is metabolized via aerobic respiration has been completely broken down and released as CO2 by the end of:

citric acid cycle

Select the processes that are matched with the incorrect amount of ATP produced by that process per glucose molecule.

citric acid cycle-4 ATP

In eukaryotes, glycolysis occurs in the:

cytosol

Glycolysis yields a net energy profit of __________ ATP molecules per molecule of glucose.

2

The overall reactions of photosynthesis are best summarized as:

6 CO2 + 12 H2O --> C6H12O6 + 6 O2 + 6 H2O

Aerobic respiration is classified as:

A redox process

An example of a substrate-level phosphorylation that occurs during glycolysis is the transfer of a phosphate group from a phosphorylated intermediate to:

ADP

Thylakoid membranes are involved in __________ synthesis.

ATP

Which of the following is an end product of glycolysis?

ATP

In the electron transport chain, exergonic redox processes drive the endergonic reaction in which:

ATP is produced by phosphorylation of ADP

Metabolism describes

All of the above

The internal fluid found inside the chloroplast

Also called the stroma

During chemiosmosis, __________ are transferred from NADH and FADH2 to electron acceptor molecules, and the energy released is used to create a(n) __________ gradient across the inner mitochondrial membrane.

electrons; proton

The synthesis of ATP as a result of the light-dependent reactions of photosynthesis is an __________ reaction that is coupled to the diffusion of __________ down their concentration gradient.

endergonic; protons

NADH and FADH2 are the products of:

oxidation-reduction reactions

In aerobic respiration, glucose is completely:

oxidized to carbon dioxide

In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately transferred to:

oxygen in a series of steps

In glycolysis, a six-carbon glucose molecule is converted to two three-carbon molecules of:

pyruvate

During aerobic respiration, oxygen is:

reduced

Aerobic respiration, anaerobic respiration, and fermentation:

release free energy

Glycolysis

results in the production of pyruvate and occurs in the cytoplasm

In a chloroplast, there is an outer and an inner membrane. The inner membrane encloses a fluid filled region called the:

stroma

The transfer of electrons from glucose to oxygen during aerobic respiration takes place in a stepwise fashion through a number of intermediates rather than by direct transfer. This is because:

the energy of the electrons can be used to make ATP

A drowning death would be most directly due to:

the lack of oxygen to accept hydrogen

Which of the following statements concerning decarboxylation reactions is FALSE?

they involve the removal of two protons and two electrons

The internal membrane system of the chloroplast is called a

thylakoid

The electron transport chain of photosynthesis is located in the:

thylakoid membrane

Chlorophyll and accessory photosynthetic pigments are associated with the:

thylakoid membranes

The role of the oxygen molecules required for aerobic respiration is:

to accept the low energy electrons at the end of the electron transport chain

The ability of some bacteria to produce lactate is exploited by humans to make:

yogurt and sauerkraut

Which of the following statements concerning anabolic reactions is FALSE?

They may split complex molecules into their components.

Chlorophyll:

absorbs red and blue light, and reflects green light.

The production of alcohol or lactate from pyruvate during __________ occurs as a means of regenerating __________ from __________.

fermentation; NAD+; NADH

Which process does not match the location in a typical eukaryotic cell?

glycolysis-mitochondrion

The process by which light energy is converted into the stored chemical energy of organic molecules is:

photosynthesis

When molecules are broken apart in cellular respiration

the energy released in respiration is channeled into molecules of ATP.

The role of the oxygen molecules required for aerobic respiration is:

to accept the low energy electrons at the end of the electron transport chain. ???

When one molecule of glucose is completely oxidized in aerobic respiration, the net amount of ATP produced is:

36-38

In the citric acid cycle, two acetyl CoA molecules are metabolized to:

4 CO2 + 6 NADH + 2 FADH2 + 2 ATP

In the electron transport chain, exergonic redox processes drive the endergonic reaction in which:

ATP is produced by phosphorylation of ADP.

In chemiosmosis, ATP is produced as hydrogen ions (protons) pass through:

ATP synthase ???

The overall reaction for the aerobic respiration of glucose is summarized as:

C6H12O6 + 6 O2 + 6 H2O --> 6 CO2 + 12 H2O + energy

The reactants of the Calvin cycle are:

CO2, ATP, and NADPH

For each glucose molecule that begins cellular respiration, the citric acid cycle must turn once.

False

Substrate level phosphorylation reactions occur in the process of chemiosmosis.

False

Oxygen produced by photosynthesis comes directly from:

H2O

The reactants of the light-dependent reactions are:

H2O, ADP, and NADP+

The correct operational sequence of the three processes listed below is: I. glycolysis II.ETP III. Krebs

I III II

Which of the following statements about the electron transport chain is true?

The proton gradient established during electron transport is a form of potential energy.

During the citric acid cycle, each acetyl group entering the cycle yields:

1 ATP, 3 NADH, and 1 FADH2.

Which of the following is not associated with the thylakoid membranes?

Calvin Cycle

Cellular respiration is most accurately described as a(n) __________ process.

Catabolic