Top answers

Draw and label a diagram of an animal cell?

mitochondria, nucleus, nucleolus, golgi body, SER, RER, plasma membrane, centriole, ribosome, cytoplasm,
MM
Answered by Mhairi M. • Biology tutor
4464 Views

What is the difference between diffusion and active transport?

Diffusion is passive (doesn't need use energy as ATP) where as active transport is active (by hydrolysis of ATP ) Diffusion is down a concentration gradient (from are high conc to low conc) where as active t...
LM
Answered by Leena M. • Biology tutor
3094 Views

Describe and explain three differences between meiosis and mitosis

Mitosis consists of one cell division whereas meiosis consists of two cell divisions.Mitosis produces two genetically identical daughter with the same number of chromosomes as the parent cell whereas meiosis...
KP
Answered by Krishan P. • Biology tutor
3565 Views

How does a pregnancy test work?

1) The wick of the pregnancy test is socked in urine. 2) The test contains mobile monoclonal antibodies with small coloured beads attached to them. 3) These mobile monoclonal antibodies only bind to hCG and ...
LZ
Answered by Lijun Z. • Biology tutor
22485 Views

Fertiliser, such as manure, contains ammonium compounds. Explain how the presence of soil bacteria and the use of manure improve crop yield. (6 marks)

Ammonium compounds in the manure are converted into nitrite , then into nitrate by nitrifying bacteria . Nitrate is then taken up by plants via active transport. Nitrogen fixing bacteria living in the nodule...
MC
Answered by Meral C. • Biology tutor
3657 Views