Top answers

What cells produce glucagon?

Alpha cells in the islets of Langerhans (pancreas)
LA
Answered by Lavin A. • Biology tutor
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What is the role of mRNA in protein synthesis?

mRNA stands for messenger RNA. Essentially, once the strand of DNA is unwound and flattened, it is separated into its two strands. Then the bases on each DNA strand are read in groups of three. These are cal...
EC
Answered by Esthel C. • Biology tutor
14102 Views

Why do foetuses have different haemoglobin to adults?

Normal adult haemoglobin is primarily comprised of 2 alpha and 2 beta subunits and foetal haemoglobin has 2 gamma subunits instead of the 2 betas. Now what this does is increase the binding affinity of this ...
MB
Answered by Max B. • Biology tutor
4239 Views

How do glucose and oxygen get into the blood to be used for respiration?

When we breathe we inhale oxygen from the air into our lungs. The alveoli are tiny air sacs in the lung where oxygen diffuses into the blood via small blood vessels, known as capillaries. The blood in these ...
AP
Answered by Anna P. • Biology tutor
42130 Views

How is a root hair cell specialised to its function?

Root hair cells have a very large surface area due to them being very long and having hair like projections. This allows more active transport of mineral ions to take place so the plant is able to take in as...
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Answered by Emily B. • Biology tutor
126871 Views