Lecture Quiz 3 CH 6 Microbial Metabolism

Question 1

Cells obtain enegry by ____ food molecules such as glocuse.

Answer 1

oxidizing

Question 2

Whenever a molecule is oxidized, another molecule must be reduced. True or False?

Answer 2

True

Question 3

in aerobic respiration, oxygen acts as

Answer 3

the terminal electron acceptor

Question 4

In the electron transport chain, protons are pumped accross the cell membrane. This results in…

Answer 4

The formation of a proton motive force

Question 5

The electons excited by photons of light are replaced by electrons from _ in photosystem II, and by electrons from _ in photosystem I.

Answer 5

water
photosystem II

Question 6

Glycolysis makes products that feed into

Answer 6

electron transport chain, TCA cycle and fermentation

Question 7

The two 3-carbon molecules that glucose is split into during glycolysis are converted through a series of steps ending in what 3-carbon moleecule?

Answer 7

Pyruvate

Question 8

For each glucose molecule broken down by glycolysis, how many net ATP molecules are produced?

Answer 8

2

Question 9

The main purpose of celluar respiration is to…

Answer 9

produce energy

Question 10

Where do NADH and FADH2 go after being produced in the TCA cycle?

Answer 10

Electron transport chain

Question 11

True or False: In prokaryotes and eukaryotes, the TCA cycle takes place in the mitochondria.

Answer 11

False

Question 12

Where does the TCA cycle take place in bacteria?

Answer 12

Cytoplasm

Question 13

Which of the following compounds can be generated from precursor metabolites produced during glycolysis?

Answer 13

Glycerol, a component of lipids

Question 14

The Calvin Cycles uses _ and , produced in the light reactions of photosynthesis, to drive the fixation of carbon dioxide.

Answer 14

ATP
NADPH

Question 15

True or False: The Calvin Cycle fixes carbon dioxide into organic molecules.

Answer 15

True

Question 16

Why would an organism ferment?

Answer 16

lack of electron transport chain
inorganic terminal electron acceptor not available

Question 17

What transfers electrons from glucose to electron transport chain

Answer 17

electron carriers

Question 18

What two respiration harvest to make ATP

Answer 18

Aerobic
Anaerobic

Question 19

Plants, algae, several groups of bacteria is ….

Answer 19

Photosynthesis

Question 20

Photosynthesis light reactions/light-dependent reactions =

Answer 20

captures energy and convert it to ATP

Question 21

Light-INdependent reactions/dark reactions =

Answer 21

Use ATP to synthesize organic compounds + involves carbon fixation