Question 1

Which of the following organelles is primarily responsible for protein synthesis in eukaryotic cells?

Accepted Answer

Ribosomes

Question 2

What factor most directly limits the size of a cell?

Accepted Answer

The surface area-to-volume ratio

Question 3

Cell membranes are primarily composed of which type of molecule?

Accepted Answer

Phospholipids

Question 4

Which part of a phospholipid is hydrophobic?

Accepted Answer

The fatty acid tails

Question 5

Cholesterol is classified as which type of lipid based on its structure?

Accepted Answer

A steroid

Question 6

Which of the following best describes an enantiomer?

Accepted Answer

A mirror-image isomer

Question 7

Which type of glycosidic linkage connects glucose units in starch?

Accepted Answer

$$\alpha-1$$,4 linkage

Question 8

In which organisms are starch and glycogen primarily found, respectively?

Accepted Answer

Starch in plants, glycogen in animals

Question 9

Which of the following is the monomer unit of proteins?

Accepted Answer

Amino acids

Question 10

The peptide bond in proteins forms between which two groups?

Accepted Answer

Amino group and carboxyl group

Question 11

Which level of protein structure is primarily determined by hydrogen bonding between backbone atoms?

Accepted Answer

Secondary structure

Question 12

Which process describes the breakdown of polymers into monomers by the addition of water?

Accepted Answer

Hydrolysis

Question 13

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Protein modification and sorting

Question 14

Which of the following best describes the structure of DNA?

Accepted Answer

Double-stranded with thymine

Question 15

Which of the following is an amphipathic molecule found in cell membranes?

Accepted Answer

Phospholipid

Question 16

Which of the following best explains why dehydration synthesis is important in biological systems?

Accepted Answer

It forms polymers from monomers by removing water

Question 17

A mutation changes the sequence of amino acids in a protein. Which level of protein structure is directly affected first?

Accepted Answer

Primary structure

Question 18

Which of the following statements about isomers is correct?

Accepted Answer

Structural isomers have different connectivity of atoms

Question 19

Which of the following best describes the amphipathic nature of phospholipids?

Accepted Answer

They have both hydrophilic and hydrophobic regions

Question 20

Which of the following correctly matches a polymer with its monomer?

Accepted Answer

Polysaccharide - monosaccharide

General Biology Study Guide: Cell Structure, Biomolecules, and Macromolecules

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