Bio Exam 3

Thylakoid membranes are involved in ____ synthesis. A. PEP B. RuBP C. NADP+ D. glucose E. ATP

E. ATP

ATP synthase during the light-dependent reaction occurs by which process? A.) diffusion B.) photolysis C.) chemiosmosis D.) phosophorylation E.) cyclic electron transport

C

At night, CAM plants incorporate CO2 into _____, which is stored in the ______ of their cells. A.) acetyl CoA; mitochondria B.) glucose; starch granules C.) malate; vacuoles D.) fructose; vacuoles E.) pyruvate; starch granules

C

In what part of a chloroplast are chlorophyll and accessory photosythetic pigments associated? A.) stroma grana B.) light reaction centers of the stroma lamellae C.) thylakoid membrane D.) mesophyll membranes E.) stroma

C

Which of the following molecules can be used as a substrate for cellular respiration? A. glucose only B. glucose and lipids only C. glucose and proteins only D. glucose, lipids, and proteins only E. glucose, lipids, proteins, and fatty acids

E. glucose, lipids, proteins, and fatty acids

During which phase of photosynthesis is ATP and NADPH synthesized? A. light-independent phase B. carbon fixation reactions C. citric acid cycle D. glycolysis E. light-dependent phase

E. light-dependent phase

What is the fluid-filled sac within the inner membrane of a chloroplast called? A. electron acceptor B. grana C. lumen D. stroma E. thylakoid

D. stroma

One gram of ____ contains more than twice the amount of energy og a gram of glucose. A.) amino acids B.) protein C.) ATP D.) starch E.) lipids

E

During aerobic respiration, nutrients are ____ to carbon dioxide and water. A. anabolized B. oxidized C. reduced D. fermented E. catabolized

E. catabolized

In glycolysis, glucose receives two phosphate groups from ____, thus forming fructose-1, 6-bisphosphate. A. ATP B. a bisphosphate group C. G3P D. ADP E. fructose-1, 6-bisphosphate

A. ATP

If yeasts are grown under anaerobic conditions, pyruvate is converted first to ____ and then to ____. A. acetaldehyde; ethyl alcohol B. lactate; carbon dioxide C. acetyl coenzyme A; citrate D. acetaldehyde; lactate E. citrate; oxaloacetate

A. acetaldehyde; ethyl alcohol

By definition, substances that absorb visible light are called: A. pigments. B. photons. C. nucleotides. D. hydrocarbons. E. porphyrins.

A. pigments

What is the ultimate source of electrons for noncyclic electron transport, and thus photosynthesis? A. water B. ATP C. oxygen D. chlorophyll E. NADP+

A. water

During the citric acid cycle, each acetyl group entering the cycle yields: A. 4 ATP, 2 NADH, and 1 FADH2. B. 1 ATP, 3 NADH, and 1 FADH2. C. 1 ATP, 2 NADH, and 4 FADH2. D. 3 ATP, 2 NADH, and 1 FADH2. E. 1 ATP, 2 NADH, and 3 FADH2

B. 1 ATP, 3 NADH, and 1 FADH2

Which reaction is the aerobic respiration of glucose? A. C4H12O2 + 6 O2 + ATP → 6 CO2 + 12 H2O + energy B. C6H12O6 + 6 O2 + 6 H2O → 6 CO2 + 12 H2O + energy C. C6H12O6 + 6 H2O → 6 CO2 + 12 H2 + energy D. C4H12O4 + 12 O2 + 6 H2O → 6 CO2 + ATP + energy E. C4H12O4 + 2 H2O + 6 CO2 → 6 O2 + ATP + energy

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

What is the first step in the Calvin cycle? A. CO2 attaches to Rubisco. B. CO2 attaches to RuBP. C. O2 attaches to G3P. D. O2 attaches to CO2. E. CO2 attaches to phosphoglycerate.

B. CO2 attatches to RuBP

Which type of electromagnetic waves have the shortest wavelength? A. ultraviolet B. gamma waves C. microwaves D. green visible light E. radio waves

B. Gamma waves

What are the reactants of the light-dependent reactions of photosynthesis? A. H2O, CO2, and NADP+ B. H2O, ADP, and NADP+ C. CO2, ADP, and NADP+ D. CO2, ADP, and NADPH E. H2O, ATP, and NADPH

B. H2O, ADP, and NADP+

Why must the transfer of electrons from glucose to oxygen during aerobic respiration take place in a series of steps? A. The energy of the protons can be used to make ATP. B. The energy of the electrons can be used to make ATP. C. The chemical intermediates donate some of their electrons in order to increase the electron pool. D. The energy of the electrons can be used to make ADP. E. It is chemically impossible to transfer electrons directly from glucose to oxygen.

B. The energy of the electrons can be used to make ATP

A group of thylakoid discs make up what part of a chloroplast? A. stroma B. granum C. lumen D. mesophyll layer E. vacuole

B. granum

Which of the following statements about the electron transport chain is true? A. The electron transport chain can be found in the mitochondria of aerobic bacteria and other cells. B. The movement of protons down a concentration gradient is an endergonic process. C. The proton gradient established during electron transport is a form of potential energy. D. Protons are pumped out of the mitochondria by the complexes of the electron transport chain. E. ATP synthesis associated with the electron transport chain is an example of substrate level phosphorylation.

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

According to the graph in the accompanying figure, chlorophyll absorbs light most strongly in what region of the electromagnetic spectrum? A. blue and green wavelengths B. green and yellow wavelengths C. red and blue wavelengths D. UV and infrared wavelengths E. UV and red wavelengths

C. red and blue wavelengths

What is the role of the oxygen molecules required for aerobic respiration? A. To store high energy electrons to pass to complex I of the electron transport chain B. To form ATP C. To accept the low energy electrons at the end of the electron transport chain D. To accept electrons directly from either NADH or FADH2 E. To produce CO2

D. To accept electrons derectly from either NADH or FADH2

ATP is formed when ____ the thylakoid lumen. A. water is split in B. electrons enter C. electrons leave D. hydrogen ions leave E. hydrogen ions enter

D. hydrogen ions leave

Where does the citric acid cycle take place in a eukaryotic cell? A. cytosol B. endoplasmic reticulum C. mitochondrial membrane D. mitochondrial matrix E. nucleus

D. mitochondrial matrix

A glucose molecule that is metabolized via aerobic respiration has been completely broken down and released as CO2 by the end of: A. fermentation. B. ATP synthesis in the mitochondria. C. glycolysis. D. the electron transport chain. E. the citric acid cycle.

E. the citric acid cycle