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Explain why an artery may be described as an organ.

Tissues are defined as being a collection of different types of cell. Similarly, organs are defined are being a collection of tissues , which are joined in a structural unit to serve a common function.An art...
MS
Answered by Matt S. • Biology tutor
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Explain why haemoglobin in Sickle Cell Anaemia is less effective at carrying oxygen.

The mutation present in sickle cell anaemia causes a change in the primary structure of amino acids in the haemoglobin molecule. This change in primary structure changes the tertiary structure of a haemoglob...
KT
Answered by Kit T. • Biology tutor
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What are the different types of RNA used for during translation?

Translation occurs at the ribosomes (which may be attached to endoplasmic reticulum). The ribosomes themselves are made of rRNA.mRNA carries the code for the polypeptide as it is complimentary to a strand of...
RM
Answered by Roshni M. • Biology tutor
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Describe the process of oxidative phosphorylation.

Student answer will be structured as a paragraph, or bullet point sentences, including at least five (but not restricted to) of the following points: hydrogens from reduced hydrogen carriers (FADH/NADH); hyd...
JB
Answered by Josephine B. • Biology tutor
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Explain the structure and the functions of the different parts of the heart

The heart plays important roles in supplying oxygen and removing toxic waste to/from our body. In basic concepts, the heart is made up of 4 chambers, two on the top and two at the bottom, the top are known a...
PF
Answered by Pei Fen Z. • Biology tutor
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