Question 1

Which type of energy is stored in the C-H bonds of a glucose molecule, and how is this energy utilized during cellular respiration?

Accepted Answer

Potential energy, which is released as ATP during cellular respiration.

Question 2

Which of the following statements best describes the feedback inhibition process regulating metabolic pathways?

Accepted Answer

It uses the reaction product to regulate its own further production.

Question 3

The majority of spontaneous reactions in biological systems ______ the entropy ($$S) of $$the system.

Accepted Answer

increase

Question 4

In noncompetitive inhibition, the inhibitor binds to the allosteric site of the enzyme. How does this process inhibit the substrate from binding in the active site?

Accepted Answer

By changing the conformation of the active site.

Question 5

In the energy diagram for a biological reaction, identify the correct labeling for A, B, and C:
A: Transition state
B: Activation energy in the absence of an enzyme
C: Activation energy in the presence of an enzyme

Accepted Answer

A - Transition state, B - Activation energy in the absence of an enzyme, C - Activation energy in the presence of an enzyme.

Question 6

Which reactions in the Krebs cycle involve oxidative decarboxylation?

Accepted Answer

N and O

Question 7

The hypothesis that bacterial cultures from deep surfaces produce magnetite and perform cellular respiration is supported by which evidence?

Accepted Answer

Bacteria treated with drugs that inhibit enzymes of the electron transport chain failed to produce magnetite.

Question 8

Given the following descriptions, which are features of oxidative and substrate-level phosphorylation?
M. Substrate-level phosphorylation produces more ATP
N. Oxidative phosphorylation produces less energy
O. ATP is formed during glycolysis through substrate-level phosphorylation
P. The exact mechanism of ATP formation in oxidative phosphorylation is chemiosmosis

Accepted Answer

M, N, O, and P

Question 9

The ATP and NADPH produced during the light reactions of photosynthesis are used in the Calvin cycle to:

Accepted Answer

Reduce carbon dioxide to sugars

Question 10

Which part of the electromagnetic spectrum is most important for life due to its role in photosynthesis?

Accepted Answer

Visible light

Question 11

Which group of plants does NOT use Rubisco to fix carbon initially?

Accepted Answer

CAM and C4 Plants

Question 12

Which of the following statements correctly describes the events of photosynthesis?

Accepted Answer

All of the above.

Question 13

Which of the following similarities between cellular respiration and photosynthesis is FALSE?

Accepted Answer

Both are examples of an anabolic reaction.

Question 14

Which strand is polymerized in the 5' $$\rightarrow 3$$' direction during DNA synthesis?

Accepted Answer

Leading strand

Question 15

In Griffith's experiment, which combination of bacteria resulted in the transformation that led to the death of the mice?

Accepted Answer

Live R strain and heat-killed S strain

Question 16

Which of the following is/are synthesized in a 5' to 3' direction during the process of DNA replication?

Accepted Answer

All of the above

Question 17

All of the following statements are true regarding DNA synthesis EXCEPT:

Accepted Answer

RNA polymerase is the main DNA-replicating enzyme

Question 18

Which enzyme is responsible for the replication of DNA?

Accepted Answer

DNA Polymerase

Question 19

The molecular lesions that are formed by thymine or cytosine bases in DNA, caused by UV light, and repaired by nucleotide excision repair mechanisms are called:

Accepted Answer

pyrimidine dimers

Question 20

What type of monomer makes up a nucleic acid?

Accepted Answer

nucleotide

Core Concepts in General Biology: Energy, Metabolism, Photosynthesis, and DNA

Guida di studio - Domande di pratica

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