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Describe how an antibody works?

Binding sites on the antibody are complementary to specific binding sites on antigen. Antibodies group together/in groups of 5 (pentamers) and attach to antigen presenting pathogens, forming antigen-antibody...
AP
Answered by Adam P. • Biology tutor
3101 Views

Why is the control of insulin called "negative" feedback? How does it work?

Negative is a slightly confusing term, as it seems to imply that the control is bad, when in reality it is vital to being alive! Negative in this sense is used in a mathematical way, meaning "removing&q...
AP
Answered by Andrew P. • Biology tutor
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Describe the steps that occur in allopatric speciation or geographical speciation.

Before speciation occurs we have a population of individuals of the same species that can freely and successfuly mate with each other. In allopatric speciation a geographical barrier forms (a mountain range ...
AA
Answered by Arthur A. • Biology tutor
9800 Views

What are the 5 conditions for the Hardy Weinburg equiliberium? And if all of these conditions are met what does the equiliberium state?

The 5 conditions are: Large population, rnadom mating, no mutations, no migration (immegration or emmigration from the population) and no natural selection. If all those conditions are met it states that the...
SE
Answered by Suzannah E. • Biology tutor
4117 Views

Why is the human heart system described as double circulatory?

The human heart system is described as double circulatory becasue is has two seperate circuits. The first carries blood between the heart and the lungs and is known as the pulmonary circuit and the second ca...
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Answered by Suzannah E. • Biology tutor
9710 Views