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Biology
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Explain what are the primary, secondary, tertiary and quaternary structures of a protein

The primary structure is the sequence of amino acids. It defines the role of the protein as all the other structures are based off of it.
The secondary structure dictates whether the protein is folde...

AN
Answered by Anastasia N. • Biology tutor
7449 Views

What are the different steps of aerobic respiration?

Respiration can be broken down into four main stages: glycolysis, the link reaction, the Krebs cycle (or citric acid cycle), and the electron transport chain. Glycolysis is the process through which gluco...

IC
Answered by Isabel C. • Biology tutor
4235 Views

Explain the role of ADH in regulating the water content of the blood.

ADH (anti-diuretic hormone) helps to regulate the water content of blood by influencing how much urine is produced by the kidneys. When blood volume increases, due to increased hydration, the osmolarity d...

OT
Answered by Oliver T. • Biology tutor
19412 Views

Describe a simple food chain and the trophic levels within it

Grass -> rabbit -> Fox -> Crow -> Bacteria + FungiGrass = producer - first trophic level, uses photosynthesis to convert carbon dioxide and water to glucose Rabbit

AC
Answered by Ashley C. • Biology tutor
3516 Views

Why does anaerobic respiration have a lower ATP yield than aerobic respiration? (4 marks)

During anaerobic respiration only glycolysis can occur as oxygen is not present to act as the final electron acceptor in oxidative phosphorylation, therefore only substrate level phosphorylation can occur...

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Answered by Amy D. • Biology tutor
8420 Views

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