Top answers

Describe how insulin is secreted from beta cells in the Islets of Langerhans

Insulin is released in response to high blood glucose concentrations. High blood glucose concentrations means glucose is taken up by the beta-cells in the Islet's of Langerhans and is respired to produce ATP...
TD
8531 Views

Define the term 'phylogeny', how it is related to classification of species, and what kind of evidence is used in phylogenetics. (3 Marks)

Phylogeny is the evolutionary relationships between different species. Species within the same taxonomic group have shared phylogeny (i.e. they have a common ancestor). (1) Phylogeny is what taxonomic classi...
MY
Answered by Mary Y. • Biology tutor
16493 Views

How does crossing over occur during meiosis?

Genetic variation is important because it allows natural selection to act on the population. Individuals that inherit advantagous alleles are more likely to survive and successfully reproduce. Crossing over ...
TA
Answered by Tamara A. • Biology tutor
16579 Views

What makes up a DNA nucleotide?

-A phospate group -A hexose sugar (deoxyribose) -A nitrogenous base (A, G, C or T)
AT
Answered by Augusta T. • Biology tutor
4546 Views

What do the coronary arteries do?

The coronary arteries supply the blood to the tissues of the heart, which is made up of cells called myocytes. In the body, the heart acts like a pump and contracts in order to force blood out into the rest ...
ZK
Answered by Zoya K. • Biology tutor
14860 Views