B1

Question 1

Equation for magnification

Answer 1

magnification = image size
————
real size

Question 2

What is resolution?

Answer 2

Resolution refers to the ability to distinguish between two distinct points clearly.

Question 3

Millimetre to Nanometre

Answer 3

1 mm = 1,000,000 nanometre

Question 4

What is diffusion?

Answer 4

Diffusion is the spreading out of practicals in a gas or any substance in a solution. The net movement is from an area of high concentration to low concentration.

Question 5

How does temperature effect diffusion?

Answer 5

The higher the temperature the more space there is for particles of a different substance to move in.

Question 6

What is active transport?

Answer 6

The process of substances being absorbed against a concentration gradient whilst using energy.

Question 7

What is Osmosis?

Answer 7

Osmosis is the movement of water molecules across a partially permeable membrane from a region of high concentration to a region of lower concentration.

Question 8

Surface area : volume Ratio

Answer 8

Smaller objects have a bigger surface area to volume ratio than a bigger object than it.