Question 1

Which of the following is NOT considered one of the major characteristics of life?

Accepted Answer

Ability to photosynthesize

Question 2

According to the cell theory, which statement is correct?

Accepted Answer

All cells come from pre-existing cells

Question 3

Which domain of life contains organisms with eukaryotic cells?

Accepted Answer

Eukarya

Question 4

A sickle cell mutation changes one amino acid in hemoglobin. This primarily affects which level of protein structure?

Accepted Answer

Primary structure

Question 5

Which macromolecule is primarily responsible for storing genetic information in cells?

Accepted Answer

Nucleic acids

Question 6

Which of the following is a correct description of a chemoautotroph?

Accepted Answer

Uses chemical compounds as an energy source and CO$$_2 as a $$carbon source

Question 7

Which functional group is found in all amino acids and is responsible for their acidic properties?

Accepted Answer

Carboxyl group ($$-COOH)$$

Question 8

Which of the following statements about lipids is TRUE?

Accepted Answer

Lipids are predominantly hydrophobic and non-polar

Question 9

A protein’s secondary structure is stabilized mainly by which type of bond?

Accepted Answer

Hydrogen bonds between backbone atoms

Question 10

Which of the following best explains why proper protein folding is critical for function?

Accepted Answer

Folding allows proteins to interact with specific molecules and perform their biological roles

Question 11

Which of the following is NOT a function of carbohydrates in cells?

Accepted Answer

Catalyzing chemical reactions

Question 12

Which equation correctly represents the general formula for a monosaccharide?

Accepted Answer

$$C_nH_{2n}O_n ($$where $$n \geq 3)$$

Question 13

Which of the following statements about the three domains of life is correct?

Accepted Answer

Eukarya includes fungi, plants, and animals

Question 14

Which of the following is the correct sequence of information flow in cells?

Accepted Answer

DNA $$\rightarrow$$ RNA $$\rightarrow$$ Protein

Question 15

Which of the following is a real-world example of how a change in protein structure can affect function?

Accepted Answer

A mutation in hemoglobin causing sickle cell anemia

Question 16

Which of the following best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles, prokaryotic cells do not

Question 17

Which of the following is the major energy currency molecule used by cells?

Accepted Answer

ATP ($$	ext{Adenosine Triphosphate})$$

Question 18

Which of the following is a correct statement about electronegativity?

Accepted Answer

It measures how strongly an atom attracts shared electrons in a bond

Question 19

Which of the following is a correct example of a peptide bond?

Accepted Answer

A bond between the carboxyl group of one amino acid and the amino group of another

Question 20

Which of the following is NOT a reason why cells need energy?

Accepted Answer

To store genetic information

General Biology: Learning Strategies, Characteristics of Life, Evolution, and Cell Theory

Study Guide - Practice Questions