Cambridge IGCSE Biology Quiz

The chimpanzee belongs to the species Pan troglodytes. What is the genus of this species?

• chimpanzee

• Pan

• Pan troglodytes

• troglodytes

Which parts transport glucose and fatty acids away from the villus?

• A

• B

• C

• D

Which conditions lead to the lowest rate of transpiration in a plant?

• cool and high humidity

• cool and windy

• warm and low humidity

• warm and windy

Which part of an amino acid is removed during deamination?

• the carbon-containing part

• the nitrogen-containing part

• the oxygen-containing part

• the iron-containing part

Which process happens in a glomerulus in the kidney?

• assimilation

• deamination

• filtration

• reabsorption

Why do different cells in a human body produce different proteins?

• Alleles can be dominant or recessive.

• Only particular genes are expressed.

• Cells have different genes.

• The sequence of bases in the DNA varies between different cells.

Which statement about gene mutations is correct?

• A mutation is a change in the amino acid sequence of DNA.

• Mutations are a source of genetic variation.

• Mutations are caused by random mating.

• Mutations happen during random fertilisation.

Approximately how much energy is lost between the producers and the secondary consumers?

• 0.2%

• 2.0%

• 84%

• 98%

Which process in the nitrogen cycle removes nitrogen gas from the atmosphere?

• decomposition

• denitrification

• nitrification

• nitrogen fixation

What is a population?

• a group of different organisms living in different areas at the same time

• a group of organisms of different species living in the same area

• a group of organisms of one species living in the same area at different times

• a group of organisms of one species living in the same area at the same time