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Biology
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What does a mitochondria do?

They are the energy producing organelle. In the motochondria, glucose is converted into energy.

Answered by Tomas K. Biology tutor
2934 Views

In what circumstances and how do humans anaerobically respire?

During strenuous activities such as exercising, the consumption of oxygen is greater than it's supply. As Oxygen is the final acceptor of electrons in the electron transport chain, without Oxygen the chai...

Answered by Arash A. Biology tutor
2218 Views

Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of the cell. (6 marks)

This process is called transcription. In the nucleus, an enzyme helicase is used to break the hydrogen bonds between the two strands of the double helix. Only o...

Answered by Kirstin P. Biology tutor
2969 Views

During anaerobic respiration, pyruvate is converted to lactate by the enzyme lactate dehydrogenase. Explain the significance of this reaction.

This reaction involves a transfer of hydrogen from NADH to pyruvate to produce lactate and NAD+. In order for glycolysis to continue to produce ATP for the cell to use, NAD+ is requi...

Answered by Thomas S. Biology tutor
10248 Views

Explain key differences between prokaryotic and eukaryotic cells.

The student should give an answer that reflects that eukaryotic cells evolved later and have had lots of time to become different through evolution, for instance: “prokaryotic and eukaryotic cells have ma...

Answered by Ryan T. Biology tutor
5407 Views

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