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Explain what is meant by active transport

Avtive transport is the transport of molecules against their concentration gradient (that is, from a low concentration to a high concentration). This mechanism requires energy, and so ATP is used up.

AB
Answered by Arantxa B. Biology tutor
4236 Views

Describe how a protein is digested

After consumption, food travels down the oesophagus into the stomach, where it is broken down by specific enzymes. The enzyme pepsin is responsible for breaking down a protein into amino acids (the sma...

AB
Answered by Arantxa B. Science tutor
6729 Views

What is Utilitarianism?

What type of ethical theory?

Teleological

it aims to bring about a greater good. It looks at what your ethical action is aimed at bringing about, r...

AG
10821 Views

What's the difference between Sn1 and Sn2 reactions?

The term Sn is drived from 'nucleophilic substitution reaction'. 1 means unimolecular, and the rate of the reaction only depend on the concentration of one reactant; 2 means bimolecular, and the rate o...

YG
Answered by Yuan G. Chemistry tutor
16047 Views

Find the cartesian equation of a curve?

A curve has parametric equations:

x = 2 + t2                           y = 4t

Find the cartesian equation of this curve.

A cartesian equation of a c...

JF
Answered by James F. Maths tutor
170390 Views

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