Cells

Question 1

What is the cell membrane?

Answer 1

The cell membrane is the skin that protects the cell. It controls what can enter and leave the cell

Question 2

What is a cytoplasm?

Answer 2

The cytoplasm is the watery substance present in all cells. All chemical reactions necessary for life take place here

Question 3

What is the nucleus?

Answer 3

The nucleus acts as the control centre of the cell. It contains the DNA. The DNA forms a set of instructions to how the cell will work

Question 4

What are the three structures only present in plant cells?

Answer 4

The cell wall
The chloroplast
Large vacuoles

Question 5

What is the cell wall?

Answer 5

A cell wall is a structure only present in plant cells. It surrounds the cell and gives it shape and support

Question 6

What is the chloroplast?

Answer 6

The chloroplast is a structure only present in plant cells. It holds the chlorophyll, the green colour that plants use to make food

Question 7

What is the vacuole?

Answer 7

Plant cells have large vacuoles. These are the place in the cytoplasm which store things and give support.

Question 8

On what scale does the eyepiece lens magnify the object on the light microscope?

Answer 8

Usually ✖️10

Question 9

What is the eyepiece lens on the light microscope used for?

Answer 9

Magnifying the object

Question 10

What is the nosepiece?

Answer 10

The nosepiece is the part of the microscope that holds the objective lens.

Question 11

What are the objective lenses?

Answer 11

They magnify the object by ✖️4, ✖️10, ✖️40

Question 12

What does the rough focus wheel do?

Answer 12

Brings the object into ‘rough’ focus

Question 13

What does the fine focus wheel do?

Answer 13

Brings the object in ‘sharp’ focus

Question 14

What is the stage on the light microscope used for?

Answer 14

Holding the slide

Question 15

What is the mirror/light source on the microscope used for?

Answer 15

The source of light

Question 16

Who was the inventor of the light microscope?

Answer 16

Anton van Leeuwenhock

Question 17

What is a tissue?

Answer 17

A tissue is a group of cells with the same function working together

Question 18

Give an example of a tissue?

Answer 18

A muscle

Question 19

What is an organ?

Answer 19

An organ is made of many different tissues working together

Question 20

Give an example of an organ?

Answer 20

The heart

Question 21

What is a system?

Answer 21

A system is a group of organs working together

Question 22

Give an example of a system?

Answer 22

The digestive system

Question 23

What does growth result from?

Answer 23

Cell division

Question 24

What are all living things made up of?

Answer 24

Cells

Question 25

Are organisms made up of one cell or thousands?

Answer 25

Some are made up of one(bacteria) and others are made up of thousands

Question 26

What is used to stain plant cells?

Answer 26

Iodine stain

Question 27

Are cells all the same size?

Answer 27

No! Cells differ in size, shape and function

Question 28

Name all the structures present in an animal cell?

Answer 28

1) cell membrane
2) cytoplasm
3) nucleus

Question 29

Name all the structures present in a plant cell?

Answer 29

1) cell membrane
2) cytoplasm
3) nucleus
4) cell wall
5) chloroplast
6) large vacuole

Question 30

What are the three substances present in all cells?

Answer 30

The cell membrane, the cytoplasm and the nucleus