Question 1

Which of the following best describes the monomers (building blocks) of carbohydrates?

Accepted Answer

Monosaccharides

Question 2

A simple sugar containing three carbon atoms is called a:

Accepted Answer

Triose

Question 3

Which of the following polysaccharides is NOT digestible by humans due to the absence of the necessary enzyme?

Accepted Answer

Cellulose

Question 4

What type of bond links monosaccharides together to form disaccharides and polysaccharides?

Accepted Answer

Glycosidic bond

Question 5

Which of the following is a biological role of phospholipids in cells?

Accepted Answer

Forming cell membranes

Question 6

A triglyceride is composed of which molecules and in what ratio?

Accepted Answer

Three fatty acids and one glycerol

Question 7

Which part of an amino acid varies among different amino acids and determines its properties?

Accepted Answer

R group (side chain)

Question 8

Which level of protein structure is primarily stabilized by hydrogen bonds between backbone atoms, resulting in α-helices and β-pleated sheets?

Accepted Answer

Secondary structure

Question 9

Which of the following conditions can cause protein denaturation?

Accepted Answer

High salt concentration

Question 10

What is the main difference between DNA and RNA in terms of their sugar component?

Accepted Answer

DNA contains deoxyribose, RNA contains ribose

Question 11

Given the DNA strand $$5' - GAATGCCGTTAC - 3'$$, what is the complementary strand produced during DNA replication?

Accepted Answer

$$3' - CTTACGGCAATG - 5'$$

Question 12

Which of the following best describes the process of transcription?

Accepted Answer

Synthesis of RNA from DNA

Question 13

Which organelle is thought to have arisen from endosymbiosis and contains its own DNA?

Accepted Answer

Mitochondrion

Question 14

Which of the following is NOT a difference between prokaryotic and eukaryotic cells?

Accepted Answer

Prokaryotic cells have linear DNA

Question 15

Which type of microscope uses electrons instead of light to visualize specimens, allowing for much higher resolution?

Accepted Answer

Electron microscope

Question 16

Which of the following cell junctions is unique to plant cells and allows for communication between adjacent cells?

Accepted Answer

Plasmodesmata

Question 17

Which cytoskeletal filament is primarily responsible for cell movement and muscle contraction?

Accepted Answer

Actin filaments (microfilaments)

Question 18

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

Accepted Answer

They have both hydrophobic and hydrophilic regions

Question 19

Which of the following is a correct description of complementary base pairing in DNA?

Accepted Answer

A pairs with T, C pairs with G

Question 20

Which of the following is a function of the cell membrane?

Accepted Answer

Regulating transport of substances in and out of the cell

General Biology: Macromolecules, Cells, and Cell Structures Study Guide

Study Guide - Practice Questions