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Biology
A Level

What is the Hardy-Weinberg equation and what is it used for?

The Hardy-Weinberg equation is a model predicting allele frequency in an population, under the assumption that the frequency of alleles in a population does not change and will contribute...

Answered by Juliet C. Biology tutor
3112 Views

Explain how 2 different types of mutations in a gene can result in the loss of an enzyme's function

The primary structure of a protein is determined by the sequence of amino acids in the polypeptide chain. This amino acid sequence is directly coded for by the sequence of codons in the mRNA. As the mRNA ...

Answered by Alexander W. Biology tutor
2598 Views

Explain the electron transport chain and chemiosmosis

Reduced NAD carries H+ and electrons to the transport chain on the inner mitochondrial membrane allow the electron to move along the carriers in a series of redox reactions. H+ then move across the membra...

Answered by Samiul A. Biology tutor
2528 Views

What is the effect of temperature on enzyme activity?

As temperature increases, the enzyme activity increases since the particles have more kinetic energy and collide more frequently; with a greater proportion of the collisions being successful and more enzy...

Answered by Yasmin T. Biology tutor
2482 Views

How are action potentials transmitted across synapses using neurotransmitters such as acetylecholine?

Action potential causes depolarisation of the pre-synaptic membrane. Opens voltage gated Ca2+ and Ca2+ floods in to the pre-synaptic knob. Ca2+ binds vesicles containing a...

Answered by Quinn H. Biology tutor
2061 Views

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