3.9

Question 1

nucleus

Answer 1

central part of an atom, made up of protons and neutrons. Also roundish structure inside a cell that acts as the control centre for the cell. Plural = nuclei.

Question 2

chromosomes

Answer 2

tiny, thread-like structure inside the nucleus of a cell. Chromosomes contain the DNA that carries genetic information.

Question 3

deoxyribonucleic acid (DNA)

Answer 3

processes.

The chemical substance found in all living things that encodes the genetic information of an organism

Question 4

Mitosis

Answer 4

cell division process that results in new cells with the same number of chromosomes as the original cell

Question 5

clones

Answer 5

identical copy

Question 6

cytokinesis

Answer 6

the process where the cytoplasm of a cell divides to form two daughter cells

Question 7

Infectious diseases

Answer 7

disease that can be transferred from one organism to another

Question 8

Non-infectious diseases

Answer 8

disease that cannot be transferred from one organism to another

Question 9

Antibiotics

Answer 9

substance derived from a micro-organism and used to kill bacteria in the body

Question 10

Disinfectants

Answer 10

chemical used to kill bacteria on surfaces and non-living objects

Question 11

Antiseptics

Answer 11

mild disinfectant used on body tissue to kill microbes

Question 12

bactericidal

Answer 12

describes an antiseptic that kills bacteria

Question 13

bacteriostatic

Answer 13

Describes an antiseptic that stops bacteria from growing or dividing but doesn’t kill them