Top answers

What are antibodies and how do they work?

Antibodies are proteins which belong to a class known as immunoglobulins. They are made up of chains of amino acids joined by peptide bonds. Antibodies have an important role in the immune system of many ani...
AH
Answered by Anna H. • Biology tutor
8480 Views

How does water enter and move up the plant?

It moves up through a process known as transpiration . This is when water leaves the through the stomata , creating a negative hydrostatic pressure which pulls the water up through the xylem . The properties...
EP
Answered by Emily P. • Biology tutor
30240 Views

How is DNA structured?

DNA stands for deoxyribonucleic acid. Two polynucleotide (which means nucleotide polymer) strands are twisted together and form what looks like a ladder - the DNA double helix . These two strands run antipar...
SH
Answered by Sadie H. • Biology tutor
3254 Views

Explain how ATP is generated from reduced NAD and reduced FAD via the electron transport chain?

Reduced NAD is oxidised at the first carrier of the electron transport chain and reduced FAD oxidised at the second. The free electrons move into the system of carriers within the membrane while the protons ...
LG
Answered by Lewis G. • Biology tutor
19712 Views

If you're measuring an environment using a quadrat or another sampling instrument - why can't you just do it where you see the most biodiversity?

Taking a sample from an area of space where you can clearly see there to be more species richness or abundance is not taking a representative sample, and it won't tell you what is really going on in that par...
EC
Answered by Ellie C. • Biology tutor
6544 Views