Cell Structure

Question 1

What is a cell?

Answer 1

It is the basic unit of life

Question 2

Who named the cell cell?

Answer 2

Robert hooke

Question 3

What are multicellular organisms?

Answer 3

Organisms made of many cells

Question 4

What is a light microscope?

Answer 4

It is a microscope that uses a beam of light to see images live and in colour. It is portable but cannot see all cell structures.

Question 5

What is an electron microscope?

Answer 5

It uses a beam of electrons to see images that are dead and in black-and-white. It is portable but can see sell ultra structure

Question 6

What is the function of an eye piece lens

Answer 6

It magnifies the image times 10

Question 7

What is the function of a course focus wheel?

Answer 7

For a rough focusing on the image

Question 8

What is the function of the fine focus wheel?

Answer 8

Brings the specimen into a clear focus

Question 9

What is the function of the stage clips?

Answer 9

To hold the slide in place

Question 10

What is the function of the stage?

Answer 10

To hold the slide

Question 11

What is the function of the objective? Lens.

Answer 11

It magnifies the image

Question 12

What is the function of the diaphragm?

Answer 12

It controls the amount of light entering the slide

Question 13

What is the function of the condenser?

Answer 13

It helps focus light on the slide

Question 14

How do you calculate magnification total?

Answer 14

You multiply the magnification of the eye piece lens by the magnification of the objective lens

Question 15

What is the role of mitochondria?

Answer 15

They are the side of aerobic respiration and release energy

Question 16

What is the function of the nuclear pores?

Answer 16

Allows MRNA to pass into and out of the nucleus

Question 17

What is the triangle use the calculate magnification image size an actual size?

Answer 17

I
A M

Question 18

What is the function of the cell membrane?

Answer 18

To control what enters and leaves the cell. It also provides some support and retain cell contents.

Question 19

What is the function of the nucleus?

Answer 19

Controls the activities of the cell

Question 20

What is the function of the nucleolus

Answer 20

To make ribosomes

Question 21

What is the nucleus made out of?

Answer 21

Chromatin

Question 22

What is the function of the chloroplast?

Answer 22

It is a site of photosynthesis

Question 23

If a cell has more mitochondria, what does it mean? It has more of?

Answer 23

More energy

Question 24

Do mitochondria have DNA?

Answer 24

Yes, mitochondria and the nucleus contain DNA

Question 25

What is the function of the cell wall?

Answer 25

To provide strength and support to a plant

Question 26

What is the cell wall made out of?

Answer 26

Cellulose

Question 27

What is the function of ribosomes?

Answer 27

To make protein

Question 28

What is the function of the vacuole?

Answer 28

Storage of water food and waste

Question 29

What is the cytosol

Answer 29

It is the cytoplasm without any organelles

Question 30

What is the protoplasm?

Answer 30

It is all living parts of the cell

Question 31

What is the cell ultrastructure?

Answer 31

It is the details of a structure as seen using an electron microscope

Question 32

Describe the structure of mitochondria

Answer 32

Mitochondria have a double membrane with an inner foldings called Cristae  this increases the surface area allowing more energy producing reactions to occur

Question 33

What is a prokaryotic cell?

Answer 33

It is a cell that has no nucleus or membrane found organelles

Question 34

What is a eukaryotic cell?

Answer 34

It is a cell that has membrane bound organelles and a nucleus

Question 35

Which of the two a prokaryotic and a eukaryotic cell contain a loop of DNA?

Answer 35

Prokaryotic cell contain a loop of DNA as they don’t have a nucleus

Question 36

Give an example of a prokaryotic cell

Answer 36

Bacteria

Question 37

Describe how you would prepare and examine a plant cell

Answer 37

One – you would cut a onion up and extract a thin layer of epidermis Using a paintbrush, you would place this on a glass side Add a few few drops of iodine Using a mounting needle, apply a cover slip at 45° angles over the slide 

Question 38

Describe how you would prepare an examine an animal cell

Answer 38

You would use a cotton swab to swap the inside of your cheek Rub this cotton swab then on a slide Stain it with methyl blue Add a cover slip with a mounting needle at 45° angle

Question 39

Why would you add the cover slip at 45° angle slowly?

Answer 39

To prevent air bubbles being trapped

Question 40

Why do you add methyl blue or iodine?

Answer 40

You add them to make the cells more visible

Question 41

Do red blood cells have mitochondria and a nucleus?

Answer 41

No