Cells

Question 1

What is the basic unit of life?

Answer 1

The cell.

Question 2

True or False: All living organisms are composed of cells.

Answer 2

True.

Question 3

What structure surrounds and protects the cell?

Answer 3

The cell membrane.

Question 4

Fill in the blank: The jelly-like substance inside the cell is called __________.

Answer 4

cytoplasm.

Question 5

What organelle is known as the powerhouse of the cell?

Answer 5

Mitochondria.

Question 6

Which organelle is responsible for protein synthesis?

Answer 6

Ribosomes.

Question 7

Multiple Choice: Which of the following is NOT a part of the cell theory? A) All living things are composed of cells B) Cells are the basic unit of life C) Cells can arise from non-cellular structures D) All cells come from pre-existing cells.

Answer 7

C) Cells can arise from non-cellular structures.

Question 8

What is the function of the nucleus in a cell?

Answer 8

To store genetic material and control cell activities.

Question 9

True or False: Prokaryotic cells do not contain a nucleus.

Answer 9

True.

Question 10

What type of cell contains membrane-bound organelles?

Answer 10

Eukaryotic cells.

Question 11

Fill in the blank: __________ are the structures responsible for photosynthesis in plant cells.

Answer 11

Chloroplasts.

Question 12

What is the role of the endoplasmic reticulum (ER)?

Answer 12

To synthesize proteins and lipids.

Question 13

Multiple Choice: Which type of ER is involved in lipid synthesis? A) Rough ER B) Smooth ER C) Golgi apparatus D) Ribosomes.

Answer 13

B) Smooth ER.

Question 14

What is the function of the Golgi apparatus?

Answer 14

To modify, sort, and package proteins and lipids for secretion or delivery to other organelles.

Question 15

True or False: Lysosomes contain enzymes that break down waste materials in the cell.

Answer 15

True.

Question 16

What is the primary function of the cell membrane?

Answer 16

To regulate what enters and exits the cell.

Question 17

Fill in the blank: The process by which cells divide is known as __________.

Answer 17

mitosis.

Question 18

What is the function of the cytoskeleton?

Answer 18

To provide structural support and shape to the cell.

Question 19

Multiple Choice: Which of the following cell types lacks a cell wall? A) Bacteria B) Animal cells C) Plant cells D) Fungi.

Answer 19

B) Animal cells.

Question 20

True or False: Plant cells have chloroplasts, while animal cells do not.

Answer 20

True.

Question 21

What is apoptosis?

Answer 21

The process of programmed cell death.

Question 22

Fill in the blank: The __________ is the semi-permeable barrier that surrounds the cell.

Answer 22

cell membrane.

Question 23

What are stem cells?

Answer 23

Undifferentiated cells that can develop into various cell types.

Question 24

Multiple Choice: Which organelle is involved in detoxifying harmful substances? A) Mitochondria B) Peroxisomes C) Ribosomes D) Nucleus.

Answer 24

B) Peroxisomes.

Question 25

What is the significance of the cell cycle?

Answer 25

It is the series of phases that a cell goes through to grow and divide.

Question 26

True or False: All cells in an organism have the same DNA.

Answer 26

True.