Search our library of Biology questions

Top answers

Biology

All levels

How does binocular vision help people judge distances?

Monocular vision (1 eye): Allows us to see 2D images in motionSuitable for short distances but not for long Binocular vision (2 eyes): Allows for depth perception through something called stereopsis (comb...

Answered by Aanchal G. • Biology tutor

2811 Views

Describe the first three levels of protein structure and the interactions which stabilise them.

Primary structure - sequence of amino acids in a polypeptide chain, amino acids joined by peptide bonds. Secondary structure - folding of the polypeptide chain into regular structures such as alpha-helice...

Answered by Joe C. • Biology tutor

2755 Views

What are the steps contained in action potential production?

The first step of the production of an action potential is a stimulus, which is a signal that excites the cell membrane causing Na+ ion channels to open. These channels are called voltage gated ion channe...

Answered by Megan M. • Biology tutor

2282 Views

Human body temperature is kept within a narrow range. When the core body temperature is too low, this is detected by the thermoregulatory centre in the brain. Describe how the body responds when a decrease in core body temperature is detected.

Human body temperature is maintained at around 37^oC through homeostasis. This monitors the core body temperature through

Answered by Oliver P. • Biology tutor

6399 Views

Explain what eutrophication is and how it is caused

Some farmers use too many fertilisers, so when heavy rain comes, these can run off the fields. This then pollutes nearby streams and rivers, leading to eutrophication.
The process of eutrophication ...

Answered by Abdullah T. • Biology tutor

3437 Views