Question 1

Which of the following best describes the process of natural selection?

Accepted Answer

Individuals with traits better suited for competition are more likely to survive and reproduce, passing those traits to offspring.

Question 2

Which domain contains organisms that have nuclei?

Accepted Answer

Domain Eukarya

Question 3

A hydrolysis reaction in biological systems involves:

Accepted Answer

Breaking bonds using water.

Question 4

If the pH of a solution changes from 5 to 3, how much more acidic does it become?

Accepted Answer

$$100	imes$$

Question 5

Which of the following is true about ATP in cellular processes?

Accepted Answer

ATP stores a large amount of potential energy and is broken down by hydrolysis to release energy.

Question 6

Which statement best describes the role of the final electron receptor in the electron transport chain (ETC) during cellular respiration?

Accepted Answer

The final electron receptor is oxygen, which accepts electrons to form water.

Question 7

Which of the following best explains why leaves appear green?

Accepted Answer

Green light is reflected by pigments in the leaf, while other wavelengths are absorbed.

Question 8

What is the main function of secondary metabolic compounds in plants?

Accepted Answer

They help plants camouflage to avoid or confuse predators.

Question 9

Which of the following is a correct statement about ionic bonds?

Accepted Answer

Ionic bonds form between two elements resulting in one atom becoming positive and the other negative.

Question 10

Which process in photosynthesis is endothermic?

Accepted Answer

The absorption of light energy to convert $$CO_2$$ and $$H_2O$$ into glucose.

Question 11

Which of the following best describes an autotroph?

Accepted Answer

An organism that produces its own food through photosynthesis or chemosynthesis.

Question 12

What is the main purpose of the scientific method in biology?

Accepted Answer

To make observations, ask questions, and form hypotheses to investigate biological phenomena.

Question 13

Which of the following is a hydrocarbon?

Accepted Answer

A molecule containing only hydrogen and carbon atoms.

Question 14

During cellular respiration, what is the role of substrate-level phosphorylation?

Accepted Answer

It adds a phosphate group directly to ADP to form ATP.

Question 15

Which of the following statements about pH is correct?

Accepted Answer

A solution with a higher pH is more basic and has fewer hydrogen ions.

Question 16

Which of the following is true about the proton motive force in mitochondria?

Accepted Answer

It is an electrochemical gradient of protons (H+) across a membrane, storing potential energy.

Question 17

Which of the following is NOT a step in the scientific method?

Accepted Answer

Ignoring evidence that contradicts your hypothesis

Question 18

Which of the following best describes dehydration synthesis?

Accepted Answer

Forming bonds by removing water.

Question 19

In the Calvin cycle of photosynthesis, what is the first step?

Accepted Answer

Fixation of carbon dioxide by RuBP.

Question 20

Which of the following statements about secondary metabolic compounds is correct?

Accepted Answer

They are metabolically expensive and not essential in plant metabolism.

General Biology: Foundations, Chemistry, and Cellular Processes

Study Guide - Practice Questions