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Biology

A Level

Outline the process of oxidative phosphorylation and its specificity to aerobic respirpation.

Oxidative Phosphorylation:The inner membrane of the double mitochondria membrane has electron transport carriers protein complexes on it which make up the electron transport chain.The NADH...

Answered by Loukas F. • Biology tutor

3872 Views

How do I analyse this graph?

Firstly, read and understand the background information given in the question. Now, look closely at the graph, observing the titles of both axis; it will be likely that you have seen or even constructed a...

Answered by Aysha M. • Biology tutor

3900 Views

Name the first stage of mitosis, and describe what happens at this stage

The first stage of mitosis is ProphaseAt prophase...The already duplicated DNA within the nucleus condenses (coils up) to form sister chromatids, connected by a centromereThe nucleolus and nuclear envelop...

Answered by Lara Q. • Biology tutor

2922 Views

Maltose is hydrolysed by the enzyme maltase. Explain why maltase catalyses only this reaction (3 marks)

The question is three marks, so should have three points.1) Active site of the enzyme has a specific shape/ tertiary structure/ complementary to maltose2) Only maltose can bind...

Answered by Amy W. • Biology tutor

3126 Views

Describe the development and propagation of an action potential in response to a stimulus (6 marks)

1. stimulus excites membrane so Na⁺channels open, membrane becomes more permeable to Na⁺ so Na⁺diffuse into neurone down electrochemical gradient. Inside ...

Answered by Simmy W. • Biology tutor

3170 Views