Question 1

In noncompetitive inhibition, the inhibitor binds to the allosteric site of an 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 2

Anabolism is the formation of complex compounds as catabolism is the:

Accepted Answer

Breakdown of complex compounds.

Question 3

Negative feedback inhibition occurs when:

Accepted Answer

The end product of a pathway inhibits an earlier enzyme in the pathway.

Question 4

How can we distinguish an oxidizing agent in a redox reaction?

Accepted Answer

It gains electrons.

Question 5

During aerobic respiration, the oxygen we inhale is converted into:

Accepted Answer

Water.

Question 6

The mechanism through which ATP production is connected to the flow of electrons via the mitochondrial electron transport chain and the resulting oxygen consumption is known as:

Accepted Answer

Oxidative phosphorylation.

Question 7

Which of the following options correctly includes all the products of glycolysis?

Accepted Answer

Pyruvate, ATP and NADH.

Question 8

What role does the pyruvate dehydrogenase complex play in cellular respiration?

Accepted Answer

It converts pyruvate to acetyl CoA.

Question 9

In the Acetyl-CoA entry phase of the Krebs cycle, what product is generated after the Acetyl-CoA carbons react with oxaloacetate?

Accepted Answer

Citrate.

Question 10

The electron transport chain refers to the protein complexes that accept and pass electrons down the chain while pumping protons across the membrane. In aerobic respiration, the final complex in the electron transport chain passes the electrons to form:

Accepted Answer

$$\mathrm{H_2O}$$

Question 11

Which of the following processes provides energy in the form of ATP to nearly all living organisms?

Accepted Answer

Glycolysis.

Question 12

Anaerobic respiration differs from aerobic respiration in all ways except:

Accepted Answer

It results in complete breakdown of glucose.

Question 13

Glucose is oxidized to give _____ and $$\mathrm{H_2O}$$ along with energy during cellular respiration, in turn, is used to produce _____ during photosynthesis.

Accepted Answer

$$\mathrm{CO_2$}$$, $$\mathrm{H_2O}$$

Question 14

Which of the following statements correctly describes 'stomata' and their function in the leaf?

Accepted Answer

Stomata are openings that allow gases to diffuse in and out of the leaf.

Question 15

Which statement about the relationship between energy and the wavelength of a photon of light is correct?

Accepted Answer

Photon energy and wavelength are inversely proportional.

Question 16

Carotenoids are yellow and red to orange because:

Accepted Answer

They reflect wavelength in the yellow and red to orange part of spectrum.

Question 17

Which of the following options correctly includes all reactants used in the Calvin cycle?

Accepted Answer

Carbon dioxide, ATP, and NADPH.

Question 18

Light reactions of photosynthesis do not involve:

Accepted Answer

Production of glucose by reduction of carbon dioxide.

Question 19

Identify the correct order of the three phases of Calvin cycle.

Accepted Answer

Carbon fixation ⇒ Glyceraldehyde-3-Phosphate synthesis ⇒ Ribulose BisPhosphate regeneration

Question 20

Identify the incorrect option about photorespiration.

Accepted Answer

It uses carbon dioxide and releases oxygen.

General Biology I: Cellular Respiration, Photosynthesis, and Cell Signaling – Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards