Question 1

Which of the following statements is NOT a part of the cell theory?

Accepted Answer

All cells contain a nucleus.

Question 2

The invention of which device was crucial for the development of cell theory?

Accepted Answer

Microscope

Question 3

Which scientist first observed and named 'cells' while looking at cork under a microscope?

Accepted Answer

Robert Hooke

Question 4

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

Accepted Answer

Regulating the movement of substances in and out of the cell

Question 5

Which organelle is responsible for producing ATP, the main energy currency of the cell?

Accepted Answer

Mitochondrion

Question 6

A scientist observes a cell with no nucleus and no membrane-bound organelles. This cell is most likely:

Accepted Answer

A prokaryotic cell

Question 7

Which of the following best describes the function of ribosomes?

Accepted Answer

They synthesize proteins using instructions from DNA.

Question 8

Which of the following statements about diffusion is correct?

Accepted Answer

It is the movement of molecules from a region of higher concentration to a region of lower concentration.

Question 9

A red blood cell is placed in a hypotonic solution. What is most likely to happen?

Accepted Answer

The cell will swell and may burst as water enters.

Question 10

Which of the following best explains why plant cells do not burst in a hypotonic environment?

Accepted Answer

They have a rigid cell wall that provides structural support.

Question 11

Which process requires energy input from the cell to move substances against their concentration gradient?

Accepted Answer

Active transport

Question 12

What is the main difference between the rough and smooth endoplasmic reticulum (ER)?

Accepted Answer

Rough ER has ribosomes attached, smooth ER does not.

Question 13

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

Accepted Answer

Processing, sorting, and transporting proteins

Question 14

Which of the following best describes the structure of the cell membrane?

Accepted Answer

A fluid mosaic model composed of a phospholipid bilayer with embedded proteins

Question 15

Which organelle is responsible for breaking down hydrogen peroxide into water in both plant and animal cells?

Accepted Answer

Peroxisome

Question 16

A scientist observes a cell with a large central vacuole, a cell wall, and chloroplasts. This cell is most likely from:

Accepted Answer

A plant

Question 17

Which of the following best describes facilitated diffusion?

Accepted Answer

Movement of molecules through transport proteins without energy

Question 18

Which of the following is a real-world example of osmosis?

Accepted Answer

Water moving into a raisin placed in pure water

Question 19

Which of the following is a function of membrane proteins?

Accepted Answer

Transporting materials across the membrane

Question 20

A cell is placed in a solution and water moves out of the cell, causing it to shrink. What type of solution is the cell in?

Accepted Answer

Hypertonic

Cell Theory, Microscopy, and Cell Structure: Foundations of Modern Biology

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