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Biology
A Level

How is tissue fluid formed?

Tissue fluid is the substance that bathes the cells in the body. It is the means by which materials are exchanged between the cell and blood as capillaries cannot reach every individual cell. Despite bein...

Answered by Melissa Y. Biology tutor
38900 Views

Describe the molecular structure of starch.

There are 2 types; amylose and amylopectin which are both made of alpha glucose and are tightly coiled. while amylopectin has branches and 2 bonds, 1-4 and 1-6 glycosidic bonds, amylose only has 1-4 glyco...

Answered by Biology tutor
3896 Views

How is energy produced in the light dependent reaction of photosynthesis?

First things first, we need to be aware of where the light dependent reaction takes place in the plant cells. It happens in the chloroplasts and specifically in the thylakoid membranes of the chloroplasts...

Answered by Biology tutor
2381 Views

Explain how a fish is adapted for gas exchange?

A fish had gills, made up of gill filaments containing lamellae, which provide a very large surface area for oxygen to diffuse out of the water as it moves over them. The blood vessels ar...

Answered by Biology tutor
34949 Views

Explain how an activated oestrogen receptor affects the target cell?

The activated oestrogen receptor binds to the promoter region of the specific gene. It then stimulates RNA polymerase to transcribe the gene, thus increasing transcription.

Answered by Adam K. Biology tutor
10315 Views

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