Top answers

What is a niche?

A niche is the functional area within which an organism exists. This can be a specific habitat it inhabits, how it shelters itself, a food source it can exploit and can include all abiotic or biotic interact...
TR
Answered by Thomas R. • Biology tutor
13858 Views

Explain how ATP is generated by oxidative phosphorylation.

Electrons and H+ ions are donated to the electron transport chain (located in the inner mitochondrial membrane) from NADH and FADH2 (generated during glycolysis, the Krebbs cycle and the Link reaction). Thes...
KO
Answered by Katie O. • Biology tutor
9114 Views

What is the cardiac cycle?

The cardiac cycle is the continual sequence of contraction and relaxation of the atria and ventricles to keep blood continually circulating around the body. First the atria contract decreasing their chamber ...
ER
Answered by Emma R. • Biology tutor
5662 Views

What is the difference in structure between arteries and veins?

Arteries carry blood away from the heart to the rest of the body and veins then take blood back to the heart. Because the heart directly pumps blood into the arteries by its forceful contractions, arteries c...
ER
Answered by Emma R. • Biology tutor
7733 Views

If fetal haemoglobin is so good at binding oxygen, why aren't we adapted to keep it until adulthood?

Firstly, although fetal haemoglobin is better at binding oxygen, it is also worse at giving up oxygen to the tissues which need it. Secondly, if adults had haemoglobin with the same affinity for oxygen as fe...
AB
Answered by Amber B. • Biology tutor
5287 Views