What is the fate of pyruvic acid in an organism that uses aerobic respiration?

it is converted into acetyl CoA

Fatty acids are oxidized in

The Krebs cycle

Which of the following is the best definition of oxidative phosphorylation?

A proton gradient allows hydrogen ions to flow back into the cells through transmembrane protein channels, releasing energy that is used to generate ATP

Photophosphorylation statements are

a) light liberates an electron from chlorophyll

b) the oxidation of carrier molecules releases energy

c) energy from oxidation reactions is used to generate ATP from ADP

D) It requires CO2

A strictly fermentative bacterium produces energy

by glycolysis only

In noncyclic photophosphorylation, 0₂ is released from

C₆H₁₂O₆

Which is the best definition of fermentation

the partial oxidation of glucose with organic molecules serving as electron acceptors

In green and purple bacteria, electrons to reduce CO₂ can come from

H₂S

A bacteria are growing on a lipid medium that started at pH 7. The action of lipases case the pH of the medium to

decrease

Which of the following uses CO₂ for carbon and H₂ for energy?

chemoautotroph

Which of the following uses glucose for carbon and energy?

chemoheterotroph

Which of the following has bacteriochlorophylls and uses alcohols for carbon?

photoheterotroph

Cynobacteria are a type of

photoautotroph

Which of the following statements are true regarding production of ATP?

a) ATP is a common intermediate between catabolic and anabolic pathways

b) Anaerobic organisms are capable of generating ATP via respiration

c) ATP can be generated by the flow of protons across protein channels

Microorganisms that catabolize sugar into ethanol and hydrogen gas would most likely be categorized as

heterolactic fermenters

Which of the following statements regarding metabolism is TRUE?

a) Heat may be release in both anabolic and catabolic reactions

b) ATP is formed in catabolic reactions

c) ADP is formed in anabolic reactions

Which of the following statements regarding the Entner-Doudoroff pathway is True?

ATP is generated

If a cell is starved for ATP, which of the following pathways would most likely be shut down?

pentose phosphate pathway

Glycolysis pathway

a) two pyruvate molecules are generated

b) four ATP molecules are generated via substrate-level phosphorylation

c) two NADH molecules are generated

d) two molecules of water are generated

A bacterial culture grown in a glucose-peptide medium cases the pH increase. The bacterei are most likely

using the peptides

Gallionella bacteria can get energy from the reaction Fe²⁺ -- Fe³⁺. This reaction is an example of

oxidation

A urease test is used to identify Myobacterium tuberculosis because

M. tuberculosis produces urease

Catabolic reactions are generally degradative and hydrolytic?

True

The use of enzymes is necessary to increase activation energy requirements of a chemical reaction

False