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Explain how one risk factor can lead to the development of coronary heart disease (CHD)

The following risk factors are associated with CHD: smoking, blood pressure, diet, exercise, genetic influences . Smoking systemically affects the whole cardiovascular system, some unfavourable effects inclu...
AA
3501 Views

Factorise 3a^2 - 9a

To factorise you need to identify 'factors', which are common features, between the different terms in an equation. In 3a^2 - 9a, the first term is 3a^2 and the second term is -9a. One common feature between...
HG
Answered by Hannah G. • Maths tutor
6128 Views

Evaluate the evidence for social learning theory as an explanation for aggressive behaviour.

Social learning theory suggests that we learn by observing and copying the behaviour of "role models" - these may be people who are of the same gender, similar age, or have other desirable characte...
AM
Answered by Alicja M. • Psychology tutor
7673 Views

In the poem 'About His Person', how does Simon Armitage construct identity?

In his poem 'About His Person', Simon Armitage constructs the identity of the titular 'Person' through describing the objects that surround him. The 'giveaway photograph' in his wallet gives away, so to spea...
MC
Answered by Michael C. • English tutor
10480 Views

Explain the process of DNA replication, including the names of vital enzymes

DNA replication is used to copy DNA. This process is semi-conservative, meaning the new double helix contains both a parent and a new strand. The process begins during S phase, where helicase unwinds the DNA...
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Answered by Farrah V. • Biology tutor
1990 Views