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How does blood flow through the heart and body?

Deoxygenated blood from the body goes to the heart via veins. Specificially deoxygenated blood goes through the vena cava into the right atrium. Blood then moves through the atrio-ventricular valves into the...
MV
Answered by Maya V. • Biology tutor
3363 Views

Outline the key structural differences between mRNA and DNA molecules and how do these contribute to their different functions?

DNA is a double stranded nucleotide polymer that is configured as a double helix, whereas RNA is a single-stranded polymer that can form secondary structures. This double-stranded nature contributes to the l...
VK
Answered by Vicky K. • Biology tutor
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Describe how mark-release-recapture technique could be used to estimate a population of mosquitoes.

Capture mosquitoes by taking a sample from the area of interest for a set period of time, mark the collected insects with a non damaging mark and release then.Then allow time for the marked mosquitoes to dis...
AJ
Answered by Anna J. • Biology tutor
5408 Views

What are the functions of glycoproteins in the plasma membrane ?

Glycoproteins have a range of functions and are used in the recognition of different cell types by cells. Cell signalling also involves glycoproteins whereby they act as receptors or binding sites for hormon...
JT
Answered by Jonathan T. • Biology tutor
10953 Views

How can high absorption of salt fro the diet leading to high salt concentration in local capillaries lead to build-up of tissue fluid?

High salt lowers the water potential of the tissue fluidLess water enters the capillaries at the venue end through osmosis Remember - Osmosis is the transport of water from an area of higher concentration to...
CH
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