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Biology
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Maltose is hydrolysed by the enzyme maltase. Explain why maltase catalyses only this reaction.

The active site of the enzyme has a specific active site that is complementary to maltose. This means that maltose can only bind to maltase to form an enzyme-substrate complex.

CB
Answered by Chloe B. Biology tutor
2744 Views

How does a transmembrane protein transport a molecule against the concentration gradient (2)

The transmembrane protein transport a molecule against the concentration by active transport (1) which requires ATP (1).

BM
Answered by Bonnie M. Biology tutor
2313 Views

Describe the process of semi-conservative replication and why is it so important?

The process of DNA replication involves unwinding the original DNA strand by the enzyme DNA helicase. This enzyme breaks the hydrogen bonds between complimentary bases forming two single ...

NM
Answered by Neha M. Biology tutor
9488 Views

How does water move up the xylem vessel?

Hydrogen bonds between water molecules give water a ‘stick’ like property called cohesion. This means molecules of water are attracted to each other. Hydrogen bonds also form between water molecules and t...

RB
Answered by Rehana B. Biology tutor
3199 Views

Briefly describe the different steps of mitosis (6 marks)

There are 4 clear phases in mitosis that need to occur in a specific order so that a cell can successfully copy it's DNA and then divide. They are; prophase, metaphase, anaphase t...

BH
Answered by Ben H. Biology tutor
11252 Views

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