Top answers

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 mi...
MA
Answered by Minnie A. • Biology tutor
13939 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 and ...
AK
Answered by Abdullah K. • Biology tutor
9191 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 wit...
HQ
Answered by Hannah Q. • Biology tutor
5362 Views

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

Statins and Stents
JT
Answered by Jonathan T. • Biology tutor
3295 Views

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

THREE
AB
Answered by Akaash B. • Biology tutor
2818 Views