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Biology
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What is the sliding filament theory of muscle contraction?

There are two main muscle filaments in muscle fibres: Actin and myosin filaments. Actin filaments are thin and have binding sites for the globular heads ...

KF
Answered by Kasia F. Biology tutor
26323 Views

What does sex linkage mean?

Sex linkage refers to when certain alleles affect one gender more than the other. Men tend to be affected by some genetic disorders more than women. This is because some alleles for genetic disorders are ...

AS
Answered by Amy S. Biology tutor
4364 Views

List two reasons drugs to treat illness are often trialled

Accept any two from:

Toxicity

Dosage

Efficacy

side effects

CB
Answered by Charlotte B. Biology tutor
3498 Views

What affects enzyme activity?

Enzyme activity is dependent on five different factors. These include temperature, pH, concentration of substrate, concentration of inhibitor and concentration of the enzyme itself. Firstly, most enzymes ...

KF
Answered by Kristina F. Biology tutor
6175 Views

What is an enzyme?

An enzyme is a biological catalyst that enables reactions to occur by decreasing the activation energy they need. Not only would certain reactions not take place without the enzyme, they are also importan...

KF
Answered by Kristina F. Biology tutor
2511 Views

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