Top answers

What is an enzyme and explain the factors affecting it.

Enzymes are proteins. They are biological catalysts, meaning they increase the rate of reaction without being used up or changed. Different enzymes have different optimum temperatures and pHs, depending on t...
YM
Answered by Yusir M. • Biology tutor
5523 Views

What is the imperfect tense?

The imperfect tense is a past tense. There are three reasons why we might use the imperfect tense and these can be remembered as: habitual, incomplete and descriptive. What does 'habitual' mean? Habitual mea...
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Answered by Rebecca B. • French tutor
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What are the non-specific defence systems of the human body that protect it from pathogens?

A 'non-specific' defence system means that its response is the same for every invader (pathogen). In the human body this includes: Skin - a physical barrier between the outside world and the inside of the bo...
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Answered by Alice H. • Biology tutor
15908 Views

Write 0.38 as a percentage and as fraction.

38% and 38/100.
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Answered by Lauren F. • Maths tutor
4489 Views

What are the two types of 2D Graphic on a computer?

There are two types of 2D Computer graphic, bitmap and vector. A bitmap is a picture made up of lots of tiny dots called pixels and can be edited in Adobe Photoshop. Vector is when the picture is joined on v...
LF
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