Top answers

Biology
A Level

How is mitosis different from meiosis?

Mitosis is the replication and division of a cell to produce 2 Identical daughter cells. It happens in all somatic cells all over the body. Meiosis is specific to germ cells (ovaries and ...

SA
Answered by Sophie A. Biology tutor
3027 Views

Explain the structure of cellulose

Cellulose is a linear polysaccharide polymer with many glucose monosaccharide units. The linkage is beta, which makes it different from starch. This difference results in a major different in digestibilit...

SG
Answered by Sarika G. Biology tutor
5426 Views

Some phenotypes, such as colour-blindness, are caused by sex-linked genes. Explain why colour-blindness is more common in men than in women

Sex-linked genes are located on the sex-chromosomes, X and Y. Females have two X-chromosomes, XX, and males have one X and one Y-chromosome, XY. The X-chromosome is much larger than the Y-chromosome and s...

ZN
Answered by Zoe N. Biology tutor
10896 Views

Describe protein synthesis

Firstly, DNA is transcripted into mRNA inside the nucleus, controlled by RNA polymerase. The DNA is unwound by RNA polymerase into two strands. There is complimentary base pairing between the template str...

SF
Answered by Sarah F. Biology tutor
3251 Views

Compare and contrast the structures and starch and cellulose and explain how these relate to their functions in the cell

Both are biological polymers (macromolecules) formed from glucose molecules joined by 1-4 glycosidic bonds.Both are insoluble: good for starch as it does not affect the osmotic potential of the cells in w...

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Answered by Eleanor R. Biology tutor
27180 Views

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