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How does a transmembrane protein transport a molecule against the concentration gradient (2)

The transmembrane protein transport a molecule against the concentration by active transport (1) which requires ATP (1) .
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Answered by Bonnie M. • Biology tutor
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Given an ammeter voltmeter a battery and a lamp how will you find the resistance of the lamp?

I will draw this on the whiteboard function.
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Answered by Ben H. • Physics tutor
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Describe how crude oil is separated into fractions in industry

Crude oil is made of many hydrocarbons that can have differing lengths . A hydrocarbons length determines it's boiling point due as a higher number of atoms in the chain means it has more Van Der Waals force...
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Answered by Ben H. • Chemistry tutor
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What is personification in poetry?

Personification is when writers give human characteristics to anything that is non-human. For example, objects, ideas, or animals. This can have a powerful descriptive effect for the reader. For example 'the...
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Answered by Lisa P. • English tutor
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What is a hypothesis test

A hypothesis test is used for deciding if something is statistically significant or not. You begin stating your two hypotheses H0: Null hypothesisH1: Alternative hypothesisFor example in a linear regression,...
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Answered by David A. • Maths tutor
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