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Define active transport.

Active transport uses energy in the form of ATP hydrolysis to move a molecule against its concentration gradient.

Answered by Julius Arthur K. • Biology tutor

2569 Views

Two balls with the same kinetic energy have mass of ball a = m and ball b = 2m. What is the ratio of their momentums: a/b?

We know that both balls have the same kinetic energy, so we can write E_ka = E_kb We also know that kinetic energy is given by the equation E_k = 1/2 (mv²) and mom...

Answered by Zachary R. • Physics tutor

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Statistics: What is the difference between a Binomial and Poisson distribution?

Binomial:

A single trial has only 2 possible outcomes: success or failure
A fixed number of trials, n
Trials are independent

Answered by Shivani S. • Maths tutor

9433 Views

Further Maths: How do you find the inverse of a 2 x 2 matrix?

Consider the Matrix M: M= a b c d First, find the determinant. To do this, we use the formula: det(M) = ad - bc Then plug the information into the formula used to find the inverse: 1/det(m) x c ...

Answered by Shivani S. • Further Mathematics tutor

2901 Views

Economics A-Level: What is the difference between traditional economic theory and the new approach to behavioural eocnomics?

The key assumptions under traditional economic theory are that economic agents are utility-maximisers and rational in their actions. Economic agents are assumed to have compared the costs and benefits of ...

Answered by Shivani S. • Economics tutor

19017 Views