Unit 1- Cell Structure

Question 1

What is the average cell size in micrometers if the length is 2000 µm and there are 10 cells up and down?

Answer 1

200 µm

Question 2

What is the average length of cells if the total length is 10000 µm and there are 5 cells?

Answer 2

2000 µm

Question 3

What is the average breadth of cells if the total breadth is 5000 µm and there are 10 cells?

Answer 3

500 µm

Question 4

What unit is used to measure cells that are too small to measure in millimeters?

Answer 4

Micrometres (µm)

Question 5

What is the conversion factor from millimeters to micrometers?

Answer 5

1 mm = 1000 µm

Question 6

Which organelle is the site of aerobic respiration and ATP production?

Answer 6

Mitochondria

Question 7

What structures do plant and animal cells have in common?

Answer 7

• Nucleus
• Cytoplasm
• Plasma membrane
• Mitochondria
• Ribosomes

Question 8

What additional structures do plant cells have compared to animal cells?

Answer 8

• Cell wall
• Vacuole
• Chloroplasts

Question 9

What is a plant cell wall made of?

Answer 9

Cellulose

Question 10

What is the function of ribosomes in the cell?

Answer 10

Site of protein synthesis

Question 11

What is the main difference between fungal cells and plant cells?

Answer 11

Fungal cells do not contain chloroplasts

Question 12

Fill in the blank: Bacterial cells do not have a _______. But instead they have DNA stored as rings called_______.

Answer 12

Nucleus, plasmids

Question 13

True or False: Bacterial cells contain mitochondria.

Answer 13

False

Question 14

What does a bacterial cell wall not contain that a plant cell wall does?

Answer 14

Cellulose

Question 15

Which organelles are absent in bacterial cells?

Answer 15

• Nucleus
• Mitochondria

Question 16

What is the structure of a fungal cell wall compared to a plant cell wall?

Answer 16

Not made out of cellulose

Question 17

What is the function of the vacuole in plant cells?

Answer 17

Stores sugar and water; helps control water content

Question 18

How can you calculate the average length of cells?

Answer 18

Length divided by number of cells

Question 19

What is the average cell length if the total length is 1000 µm and there are 4 cells?

Answer 19

250 µm

Question 20

What does the cytoplasm do in a cell?

Answer 20

Where chemical reactions take place

Question 21

What is the role of chloroplasts in plant cells?

Answer 21

Allow plants to make their own food using photosynthesis

Question 22

What is the function of the nucleus in a cell

Answer 22

Contains DNA and controls all activities

Question 23

What is the function of the plasma membrane in a cell

Answer 23

Controls what substances and can enter and exit a cell

Question 24

What is the function of the cell wall

Answer 24

It helps the cell to keep its shape. It’s made of cellulose

Question 25

What is the function of chloroplasts

Answer 25

Contain a green chemical called chlorophyll which absorbs sunlight. Allow plants to make their own food using photosynthesis