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Biology
A Level

What is the structure of cellulose (polysaccharide)?

the simplest molecule present is beta glucose. These are bonded to each other via glycosidic bonds through a condensation reaction. Each molecule has been rotated 180 degrees compared to the previous one....

Answered by Dhiren C. Biology tutor
10993 Views

Describe how ATP is generated in the light-dependent reaction of photosynthesis.

Light energy excites electrons in chlorophyll to a higher energy level. The electrons pass down the electron transfer chain, reducing carriers as they go and releasing energy. The energy lost is used to g...

Answered by Biology tutor
5988 Views

Explain how the structure of an enzyme allows for it to act as a biological catalyst

An enzyme's tertiary structure allows it to have an active site which is complementary and specific to one type of substrate to which it can bind with, forming an enzyme- substrate complex. It then lowers...

Answered by Maria K. Biology tutor
2254 Views

What is Darwin’s theory of Evolution by Natural Selection? What is the evidence?

It describes the differential survival and reproduction of different organisms with varying phenotypes. These differences are at least partially heritable, thus over time, gradual changes accumulate in a ...

Answered by Nicole S. Biology tutor
2376 Views

How many carbon atoms do these molecules important in respiration have: Glucose, Pyruvate and Acetate

You can work this out if you know the stages of respiration.The first stage occurs in the cytosol and is called glycolysis. It is the breaking down of glucose into two molecules of pyruvate with productio...

Answered by Biology tutor
2726 Views

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