Top answers

Biology
GCSE

Describe two ways the body prevents the entry of microorganisms.

Acid in stomach kills pathogens in food.Skin creates a barrier that microorganisms cannot enter through.Hairs in nose and ears that trap microorganisms.Mucus and cilia in the trachea and bronchi that trap...

MA
Answered by Minnie A. Biology tutor
13205 Views

Explain the effect of temperature and pH on enzyme-catalysed reactions:

The rate of reaction typically increases with temperature, as heat provides kinetic energy and more substrate-enzyme collisions. however, going above a certain temperature will cause enzymes to denature a...

AK
Answered by Abdullah K. Biology tutor
8455 Views

Explain how a recessive phenotype can be produced from two parents with a dominant phenotype

A recessive phenotype is produced when there are two copies of the same recessive allele e.g. aaA dominant phenotype is produced when there is at least one copy of a dominant allele e.g. Aa or AAA parent ...

HQ
Answered by Hannah Q. Biology tutor
4650 Views

What can be used to treat people with coronary heart disease?

Statins and Stents

JT
Answered by Jonathan T. Biology tutor
2883 Views

How many nucleotides code for an amino acid in protein synthesis?

THREE

AB
Answered by Akaash B. Biology tutor
2434 Views

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