bio

Question 1

Gamete

Answer 1

A sex cell

Question 2

Fertilisation

Answer 2

The fusion of 2 gametes

Question 3

Zygote

Answer 3

A fertilised egg

Question 4

DNA

Answer 4

the molecule that carries genetic instruction

Question 5

Chromosome

Answer 5

Threadlike structures that contain long lengths of DNA that holds many genes.

Question 6

Gene

Answer 6

A section of a chromosome that codes for one trait

Question 7

Genotype

Answer 7

The alleles in an individual has for a trait.

Question 8

Homozygous

Answer 8

2 letters that are the same (bb, BB)

Question 9

Heterozygous

Answer 9

letters that arnt the same (Bb)

Question 10

Variation

Answer 10

The differences (in DNA) in individuals in a population/species

Question 11

Natural selection

Answer 11

The process whereby organisms better adapted to their environment tend to survive and produce more offspring

Question 12

gas exchange and breathing

Answer 12

Breathing brings in oxygen however gas exchange transfers gasses between the lungs and blood.

Question 13

Mechanical digestion

Answer 13

Mechanical digestion is the physical breakdown of food

Question 14

Chemical breakdown

Answer 14

chemical digestion is the chemical breakdown of food into nutrients.

Question 15

ingestion

Answer 15

when foods enter the mouth and starts to break down.

Question 16

digestion

Answer 16

when the stomach and intestines break food down further.

Question 17

absorbtion

Answer 17

where the nutriants move into the blood in the small intestine.

Question 18

egestion

Answer 18

where the body gets rid of leftover waste