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evaluate some different treatments for cardiovascular disease (6)

LIFESTYLE examples of lifestyle treatment Lower blood cholesterol by cutting down on fatty foods.Stop smoking and other recreational drugs - They can affect heart rate and bloo...

MD
Answered by Melissa D. Biology tutor
2355 Views

How can the use of antibiotics contribute to bacteria becoming resistant?

Bacterial DNA can spontaneously mutate, which means a change in the nucleotide reading frame. By chance, a mutation may cause the bacteria to prevent being killed by the antibiotic. For example, by develo...

CW
Answered by Carolina W. Biology tutor
2690 Views

A ship is 180 kilometres away from a port P on a bearing of 63 degrees. Another ship is 245 kilometres away from port P on a bearing of 146 degrees. Calculate the distance between the two ships.

While this problem could be done simply by inputting the appropriate numbers into the correct formula, it is good practice to draw a diagram of the problem in order to minimise any silly mistakes that may...

SG
Answered by Saeed G. Maths tutor
7873 Views

What are the different types of bonding?

There are 3 main types of bonding: covalent, ionic and metallic. Covalent bonding occurs when there are a shared pair of electrons between two atoms. Ionic bonding is the electrostatic attraction between ...

RM
Answered by Rachel M. Chemistry tutor
7307 Views

How do you calculate efficiency?

The efficiency is calculated using the equation:
((Total useful output energy)/(Total input energy)) *100
We are essentially trying to calculate what percentage of the input energy is converted...

RM
Answered by Rachel M. Physics tutor
2307 Views

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