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Biology
A Level

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
7333 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...

MK
Answered by Maria K. Biology tutor
2972 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 ...

NS
Answered by Nicole S. Biology tutor
3295 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
3748 Views

Compare the structure and properties of phospholipids and triglycerides

Both have ester bonds. Ester bonds are formed between glycerol and fatty acids Both contain glycerolFatty acids can be either saturated or unsaturated in both structures. Saturated fatty acids do not have...

KL
Answered by Kiman L. Biology tutor
8826 Views

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