Science Exam Revision

Question 1

What is contained in the nucleus?

Answer 1

DNA

Question 2

What is the function of the DNA?

Answer 2

Controls cell activities

Question 3

What is the function of ribosomes?

Answer 3

Protein Synthesis

Question 4

Describe the difference between a eukaryotic and a prokaryotic cell?

Answer 4

Prokaryotic has no nucleus.

Question 5

What is a specialised cell?

Answer 5

Adapted to one function

Question 6

Why are ciliated cells specialised?

Answer 6

Tiny hairs on the surface that beat to move substances.

Question 7

What is a stem cell?

Answer 7

An unspecialised cell

Question 8

What is field of view?

Answer 8

The areas of a microscope you can see

Question 9

How is a sperm cell adapted to it’s function?

Answer 9

Acrosome - contains enzymes.

Question 10

Where do we find stem cells in humans and plants?

Answer 10

Humans - Embryo

Plants - Meristem

Question 11

Where is meristem found in plants?

Answer 11

Roots and shoots.

Question 12

How do you calculate total magnification of an eyepiece lens and objective lens?

Answer 12

eyepiece lens magnification x objective lens mafinication

Question 13

What is the formula to calculate magnification?

Answer 13

Magnification = image size / actual size

Question 15

What advantages do light microscopes have over electron ones?

Answer 15

They can observe living specimen without destroying them.

Question 16

What advantages do electron microscopes have over light ones?

Answer 16

Much higher magnification

Question 17

Do plants and animals stop growing?

Answer 17

Plants - No

Animals - Yes

Question 18

What does being the 95th percentile mean?

Answer 18

You are taller than 95% of the population