Unit 1

Question 1

What is the basic unit of life?

Answer 1

The cell.

Question 2

True or False: All living organisms are made up of cells.

Answer 2

True.

Question 3

What structure surrounds the cell and controls what enters and exits?

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

What is the function of the nucleus?

Answer 7

It stores the cell’s genetic material (DNA).

Question 8

True or False: The cell wall is found in animal cells.

Answer 8

False.

Question 9

Which organelle is involved in the modification and packaging of proteins?

Answer 9

Golgi apparatus.

Question 10

What is the role of lysosomes?

Answer 10

They break down waste materials and cellular debris.

Question 11

Fill in the blank: __________ are the sites of photosynthesis in plant cells.

Answer 11

Chloroplasts.

Question 12

What is the function of the endoplasmic reticulum?

Answer 12

It is involved in protein and lipid synthesis.

Question 13

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

Answer 13

C) Cells can arise from non-living matter.

Question 14

What structure helps maintain the shape of plant cells?

Answer 14

Cell wall.

Question 15

True or False: Ribosomes can be found floating freely in the cytoplasm.

Answer 15

True.

Question 16

What is the main component of the cell membrane?

Answer 16

Phospholipids.

Question 17

Fill in the blank: The __________ is a network of protein filaments that helps the cell maintain its shape.

Answer 17

cytoskeleton.

Question 18

Which organelle is responsible for detoxifying harmful substances in the cell?

Answer 18

Smooth endoplasmic reticulum.

Question 19

What are vesicles?

Answer 19

Small membrane-bound sacs that transport substances within the cell.

Question 20

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

Answer 20

True.

Question 21

What is the primary function of the plasma membrane?

Answer 21

To protect the cell and regulate the movement of substances in and out.

Question 22

Fill in the blank: The __________ contains enzymes that digest cellular waste.

Answer 22

lysosome.

Question 23

Multiple Choice: Which of the following organelles is only found in plant cells? A) Mitochondria B) Nucleus C) Chloroplast D) Ribosome

Answer 23

C) Chloroplast.

Question 24

What is cytoplasm primarily composed of?

Answer 24

Water, salts, and organic molecules.

Question 25

True or False: All cells have a nucleus.

Answer 25

False.

Question 26

What is the function of the nucleolus?

Answer 26

It produces ribosomal RNA (rRNA).

Question 27

Fill in the blank: The __________ is a double membrane that surrounds the nucleus.

Answer 27

nuclear envelope.

Question 28

What role do peroxisomes play in the cell?

Answer 28

They break down fatty acids and detoxify harmful substances.

Question 29

What is the function of centrioles?

Answer 29

They assist in cell division.

Question 30

True or False: The rough endoplasmic reticulum is studded with ribosomes.

Answer 30

True.

Question 31

What is the primary function of vacuoles in plant cells?

Answer 31

To store nutrients and waste products.

Question 32

Multiple Choice: Which organelle is responsible for producing ATP? A) Ribosome B) Mitochondria C) Golgi apparatus D) Lysosome

Answer 32

B) Mitochondria.