Top answers

Biology
GCSE

Describe, with the use of an example, the process of natural selection in evolution.

An example could be the peppered moth which changed its colour in order to blend into the environment as it changed with the industrial revolution.Should explain that natural selection is where advantageo...

RB
Answered by Rose B. Biology tutor
2921 Views

Give 2 differences between an animal and a plant cell.

Any 2 from: Plant cells have; cell wall (1), large vacuole (1), chloroplast (1) Animals cells are more irregular in shape, plant cells are more rigid and rectangular (1)


SG
Answered by Sarina G. Biology tutor
2365 Views

Describe the process of breathing

The diaphragm contracts, moving downwards. The external intercostal muscles contract, and the internal intercostal muscles relax. Pressure in the chest cavity decreases, forcing air into the lungs. The di...

AC
Answered by Ailin C. Biology tutor
2603 Views

What are the key steps in DNA replication during the S-phase of the cell cycle?

The enzyme DNA helicase 'unzips' the double helix DNA structure but disrupting the hydrogen bonds between the bases. This forms a replication fork that becomes the template for replication.Replication the...

NE
Answered by Natasha E. Biology tutor
4178 Views

Describe the 3 overall stages of the cell cycle and the processes ongoing during the cell's life.

The cell cycle is composed of 3 main stages:

1) Interphase

During the interphase stage of the cell cycle, the cell grows and organelles such as mi...

YA
Answered by Yousif A. Biology tutor
92959 Views

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