Top answers

Biology
All levels

How does a point mutation in the gene coding for ATP synthase affect oxidative phosphorylation

In a point mutation, a single base is substituted, inserted, or deleted. This changes the sequence of amino acids in ATP synthase. This changes the tertiary structure of ATP synthase. ATP synthase is used...

ET
Answered by Elizabeth T. Biology tutor
2402 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
7671 Views

Give a definition/explanation for the term 'phenotype'

A phenotype is the expression of the genetic constitution of an organism and how it interacts with the environment.

FS
Answered by Frankie S. Biology tutor
2489 Views

Which of these nucleotide bases is NOT present in RNA: Cytosine, Thymine, Guanine, Adenine, Uracil

The correct answer is: Thymine.The four bases found in DNA molecules are Cytosine, Guanine, Adenine and Thymine but in RNA molecules, the Thymine base is replaced by Uracil.

FS
Answered by Frankie S. Biology tutor
20818 Views

How does saltatory conduction work?

Most axons in the human nervous system are myelinated, meaning they are enclosed in a myelin sheath, a fatty deposit created and maintained by Schwann cells that acts as an electr...

ZC
Answered by Zoe C. Biology tutor
27007 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning