Biology Y9 Revision

Question 1

What are the 2 types of microscopes?

Answer 1

Light and Electron Microscopes

Question 2

What does magnification mean?

Answer 2

The enlargement of an image

Question 3

How have microscopes been improved since it was created?

Answer 3

Resolution and ability to see smaller things

Question 4

What are the 2 types of cells ?

Answer 4

Prokaryotic cells and eukaryotic cells

Question 5

What are eukaryotic cells?

Answer 5

Any organism that contains a nucleus and membrane bound organelles.

Question 6

What are prokaryotic cells?

Answer 6

They are single celled organisms that are one cell that does it all.

Question 7

What are some examples of a eukaryotic cell?

Answer 7

Plants, animals and food

Question 8

What is an example of a prokaryotic cell?

Answer 8

Bacteria

Question 9

What is the equation for Image size ?

Answer 9

Image Size = Actual Size X Magnification

Question 10

The actual size of a cell is 10nm and its magnification is 450x. What is the image size ?

Answer 10

4500nm

Question 11

How much to convert 10000pm into cm?

Answer 11

0.00000001

Question 12

What are the 4 units for microscopic calculations?

Answer 12

Millimetres, Micrometers, Nanometers and Picometers

Question 13

What are the 6 specialised animal cells?

Answer 13

Sperm, Egg, Red Blood, Muscle, Ciliated Epithelial and Neurone cell

Question 14

What are the special features of a sperm cell?

Answer 14

Flagellum, Haploid Nucleus, Acrosome, Mitochondria and Streamlined Shape

Question 15

What are the special features of an egg cell?

Answer 15

Large in diameter, Nutrients in cytoplasm, Haploid Nucleus and can change its cell membrane after fertilisation.