3.8

Question 1

Chromosomes

Answer 1

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

Question 2

Dependent variable

Answer 2

variable that is expected to change when the independent variable is changed. The dependent variable is observed or measured during the experiment.

Question 3

Mitosis

Answer 3

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

Question 4

Clone

Answer 4

identical copy

Question 5

Cytokinesis

Answer 5

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

Question 6

Infectious disease

Answer 6

disease that can be transferred from one organism to another

Question 7

Non infectious

Answer 7

disease that cannot be transferred from one organism to another

Question 8

Antibiotics

Answer 8

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

Question 9

Disinfectant

Answer 9

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

Question 10

Antiseptic

Answer 10

mild disinfectant used on body tissue to kill microbes

Question 11

Bactericidal

Answer 11

describes an antiseptic that kills bacteria

Question 12

Bacteria static

Answer 12

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

Question 13

Nucleus

Answer 13

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.