Chapter 3- the cell

Question 0

What are the 3 parts of an Animal Cell?

Answer 0

Nucleus
Cell membrane
Cytoplasm

Question 1

What are all organisms made of?

Answer 1

Cells

Question 2

What are the 6 parts of a plant cell?

Answer 2

The nucleus
Cytoplasm
Cell membrane
Chloroplast (depends)
Vacuole 
Cell wall

Question 3

What are the differences between an animal cell and a plant cell?

Answer 3

Plant cells have vacuoles, a cell wall and chloroplast

Where animal cells do not.

Question 4

What is a microscope used for?

Answer 4

A microscope is used for magnifying objects that cannot be seen under the naked eye

Question 5

Name the parts of the microscope

Answer 5

Eyepiece lens
Coarse focus wheel
Fine focus wheel
Nosepiece 
Objective lenses
Stage
Mirror/light source
[Iris lever]

Question 6

Explain how to prepare a slide of plant tissue (onion skin)

Answer 6

1. Use the forceps (tweezers) to take a layer of skin from the onion.
2. place your onion skin on a glass slide.
3. Drop a few drops of iodine or methylene blue to dye the onion skin to make it easier to see under the microscope.
4. put your cover slip on to the glass slide with your onion skin and gently put pressure on the cover slip to get rid of any air holes.

[5. Put slide under microscope.
6. Examine under microscope]

Question 7

What is the function of an eyepiece lens?

Answer 7

Magnifies the object (usually x10)

Question 8

What is the function of a coarse focus wheel? And a fine focus wheel?

Answer 8

Coarse focus wheel:
Brings object into ‘rough’ focus.

Fine focus wheel:
Bring object into ‘sharp’ focus.

Question 9

What is the function of the objective lenses?

Answer 9

Magnifies the object by different amounts.

x4, x10, x40

Question 10

What is the function of the nosepiece?

Answer 10

Holds the objective lenses.

Question 11

What is the function of the stage?

Answer 11

Holds the slide

Question 12

What is the function of the mirror/light source?

Answer 12

The source of light

Question 13

*What is an organ made of?

Answer 13

An organ is made of many different tissues working together (e.g the heart)

Question 14

What is a system?

Answer 14

A system is a group of organs working together (e.g the circulatory system or the digestive system)

Question 15

///NOTE:\\

Answer 15

Cells -> Tissues -> Organs -> Systems -> Whole Organism.

{Growth results from cell division.}

Question 16

Which part of a cell controls the activity of a cell?

Answer 16

The nucleus

Question 17

Which part of a cell controls what gets in and out of the cell?

Answer 17

Cell membrane

Question 18

What is the function of the cytoplasm of a cell?

Answer 18

Where chemical reactions necessary in life take place.

Question 19

Where in the cell would you find DNA?

Answer 19

the nucleus

Question 20

What are the missing words from the sentence?

An organ is made of different ….. working ….

Answer 20

An organ is made of different TISSUES working TOGETHER.

Question 21

Two animal organs are the …. and the ….

Answer 21

Two animal organs are the HEART and the LIVER.

Question 22

A …. is a group of organs …. together.

Answer 22

A SYSTEM is a group of organs WORKING together.

Question 23

What causes living things to grow in size?

Answer 23

Cells dividing

Question 24

An example of a plant tissue is …. And an example of an animal tissue is ….

Answer 24

An example of plant tissue is GROWTH TISSUE and an example of an animal tissue is MUSCLE TISSUE.