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Explain how a mutation in DNA could cause a non functioning enzyme to be formed

A mutation could change the order of DNA bases which would alter the type of amino acid produced from a DNA triplet. Therefore, the enzyme, which is a pr...

Answered by Hannah W. • Biology tutor

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How does ATP fuel reactions?

ATP releases energy when it is converted to ADP and iP by ATP lyase. It REQUIRES energy to create that phosphate bond and so the bond can be viewed as the store of energy. ATP lyase breaks this and releas...

Answered by Rebecca C. • Biology tutor

2953 Views

Describe the pathway of an electrical signal in producing a response to a stimulus

Stimulus is detected by a recepttor e.g. the skin- Electrical signals travel from receptor to Central nervous System (CNS) via sensory neurones- CNS coordinates a response to the stimuli- CNS sends ...

Answered by Aleena A. • Biology tutor

2896 Views

1a) Give 3 structures that an animal cell would contain and describe their function? 1b) Name 3 different structures that a plant cell contains which an animal cell would not.

1a) Nucleus: Contains the genetic material of the cellCell membrane: controls what can enter and leave the cell. Also will hold the cell togetherCytoplasm: Where cell reactions take place

1b) C...

Answered by Aleena A. • Biology tutor

2681 Views

Describe and explain the events that occur in full contraction of the heart

-To start the sinoatrial node (SAN) on the wall of the right atrium sends an electrical signal across the right and left atria to contract and the blood moves into the ventricles. A layer of non-conductiv...

Answered by Rosie P. • Biology tutor

2580 Views