B

Question 1

Bacterium

Answer 1

A type of microorganism consisting of single cells. Each bacterial cell has cytoplasm surrounded by a cell membrane and cell wall, but has no nucleus.

Question 2

Balanced diet

Answer 2

A diet that provides sufficient energy for a person’s needs and all the food nutrients in the correct proportions.

Question 3

Bile

Answer 3

An alkaline fluid made in the liver and stored in the gall bladder. It is released into the small intestine through the bile duct to help with the digestion and absorption of fats

Question 4

Binary fission

Answer 4

A type of asexual reproduction in which one cell divides into two. Bacteria reproduce by it.

Question 5

Binomial system

Answer 5

A method for naming organisms in which each is given two names: a genus name and a trivial name, e.g. Homo sapiens for humans

Question 6

Biodegradable

Answer 6

Something that can be broken down by biological processes. e.g. some plastics.

Question 7

Biomass

Answer 7

The mass of living material in a particular area.

Question 8

Biotechnology

Answer 8

the use of organisms to make useful products, such as foods and medicines, or to carry out useful services such as making wastes harmless.

Question 9

Birth control

Answer 9

Prevention of a birth either by a contraception or abortion.

Question 10

Bladder

Answer 10

A muscular sac that stores urine and passes it out through the urethra.

Question 11

Blind spot

Answer 11

part of the retina where there are no receptors

Question 12

Brain

Answer 12

the part of the central nervous system that coordinates most activities of the body.

Question 13

Bronchiole

Answer 13

A small branch of a bronchus which ends in alveoli (air sacs)

Question 14

Bronchus

Answer 14

One of the two tubes that branch off the trachea and pass into the lungs