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Biology
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Name how the structure of the three main blood vessels are adapted to their function.

A) Arteries - Arteries carry blood away from the heart at high blood pressure. Therefore they have a thick muscle layer and elastic tissue in their walls to cope with and maintain the high blood pressure ...

Answered by Christa E. Biology tutor
2706 Views

Explain 2 limiting factors of photosynthesis and how can they be removed

There are many limiting factors of photosynthesis (light, temperature, water, carbon dioxide) but we'll focus on light and temperature: Chlorophyll absorbs light at certain wavelengths and light needs to ...

Answered by Nikita S. Biology tutor
2401 Views

Explain how polymerase chain reaction is used in DNA fingerprinting

DNA extracted from a crime scene is normally available in small quantities so PCR can be used to amplify this quantity to a reasonable concentration which can then be used to run a gel electrophoresis to ...

Answered by Nikita S. Biology tutor
12269 Views

How does vaccination prevent illness?

When a person is vaccinated, a small amount of dead or inactive pathogen (that they are being vaccinated against) is introduced into their body. This stimulates the white blood cells to produce antibodies...

Answered by Freya T. Biology tutor
2210 Views

What are some differences between RNA and DNA?

RNA is single stranded, whereas DNA is double stranded. RNA has a uracil base instead of DNA's thymine base. RNA has a ribose sugar, whereas DNA has a deoxyribose sugar.

Answered by Holly G. Biology tutor
900 Views

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