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Biology

A Level

what are the differences between involuntary, cardiac and voluntary muscle?

Involuntary muscle (or smooth muscle) is innervated by the autonomic nervous system and therefore is not under conscious control. It is not st...

Answered by Dani E. • Biology tutor

48364 Views

How are signals transmitted across the synaptic cleft?
When the action potential reaches the synaptic knob it causes voltage-gated calcium ion channels to open, allowing calcium ions to diffuse in.

These calcium ions cause
DE
Answered by Dani E. • Biology tutor
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A guanine is swapped for a thymine in a gene sequence. Explain how this may alter the function of the protein it translates.
The alteration in the nucleotide sequence of the gene may result in a change in the amino acid sequence of the protein during translation. Each set of three RNA nucleotides (anticodon) is recognised by...
MD
Answered by Matthew D. • Biology tutor
3536 Views
Compare and contrast the similarities and differences between meiosis and mitosis.
Both are forms of cell division.Both are used during gametogenesis (formation of gametes or sex cells such as spermatozoa and oocytes).Only mitosis is used during cell division of somatic or body cells.Me...
SP
Answered by Sally P. • Biology tutor
35777 Views
What are the main differences between Mitosis and Meiosis?
Mitosis: One division occurs, two identical cells are formed, occurs in body cells involved in growth and repair.

Meiosis: Two divisions occur, four cells with genetic variation are form...
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Answered by Ava D. • Biology tutor
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Top answers

what are the differences between involuntary, cardiac and voluntary muscle?

How are signals transmitted across the synaptic cleft?

A guanine is swapped for a thymine in a gene sequence. Explain how this may alter the function of the protein it translates.

Compare and contrast the similarities and differences between meiosis and mitosis.

What are the main differences between Mitosis and Meiosis?

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