National 5 Unit 1 Mid-Unit Revision

Question 1

DNA is described as being a double-helix shape.

Accepted Answer

True

Question 2

Which of the following is an example of good aseptic technique?

Accepted Answer

Wiping desks down before & after

Question 3

The sections (bands) of a chromosome DNA that code for proteins are called what?

Accepted Answer

Genes

Question 4

What type of cell is this?

Accepted Answer

Bacterial

Question 5

If water moves into a plant cell, what word is used to describe it?

Accepted Answer

Turgid

Question 6

Which of the following are NOT found in an animal cell?

Accepted Answer

Cell Wall

Question 7

Which of the following substances will diffuse into a respiring animal cell?

Accepted Answer

Oxygen

Question 8

Which structure is made of a phospholipid bi-layer

Accepted Answer

Cell Membrane

Question 9

What term is used to describe the permeability of the cell membrane?

Accepted Answer

Selectively

Question 10

Which process is being shown here?

Accepted Answer

Osmosis

Question 11

Which organelle is the site of protein synthesis?

Accepted Answer

Ribosome

Question 12

How many bases are required to code for 20 amino acids?

Accepted Answer

60

Question 13

Each species has its own chromsomes number known as the _____ number

Accepted Answer

Diploid

Question 14

What are the three groups of micro-organisms called?

Accepted Answer

Bacteria, virus, fungi

Question 15

What is the role of chloroplasts?

Accepted Answer

Photosynthesis

Question 16

Which of the following processes require energy?

Accepted Answer

Active transport

Question 17

When a nucleus divides this is called.......

Accepted Answer

Mitosis

Question 18

What happens next?

Accepted Answer

The spindle fibres pull the chromatids apart

Question 19

Which of the following is NOT a base found on DNA?

Accepted Answer

Uracil

Question 20

How many PAIRS of chromosomes do human body cells have?

Accepted Answer

23

Questions 20