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Biology
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Describe the structure of a human heart and how this enables it to bring blood carrying oxygen to the tissues of the body

The human heart has four chambers, an atria and a ventricle on each side, separated into left and right by a central wall called the septum. The heart is a the pump for our double circulatory system. The ...

Answered by Louisa W. Biology tutor
2401 Views

Explain how 2 different types of mutations in a gene can result in the loss of an enzyme's function

The primary structure of a protein is determined by the sequence of amino acids in the polypeptide chain. This amino acid sequence is directly coded for by the sequence of codons in the mRNA. As the mRNA ...

Answered by Alexander W. Biology tutor
2495 Views

Explain the electron transport chain and chemiosmosis

Reduced NAD carries H+ and electrons to the transport chain on the inner mitochondrial membrane allow the electron to move along the carriers in a series of redox reactions. H+ then move across the membra...

Answered by Samiul A. Biology tutor
2428 Views

What is the difference between anaerobic respiration and aerobic respiration?

Aerobic respiration uses oxygen to generate energy, while anaerobic respiration happens without using oxygen. Aerobic respiration produces carbon dioxide, water and ATP (energy) from glucose and oxygen. A...

Answered by Anna M. Biology tutor
4991 Views

What is the effect of temperature on enzyme activity?

As temperature increases, the enzyme activity increases since the particles have more kinetic energy and collide more frequently; with a greater proportion of the collisions being successful and more enzy...

Answered by Yasmin T. Biology tutor
2349 Views

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