Top answers

Describe the structure of proteins.

Proteins are macromolecules found within living organisms that have an array of crucial functions, including catalysing enzymatic reactions and providing structural stability to cells. At the basic level, al...
AC
Answered by Abbie C. • Biology tutor
3275 Views

The reaction for the Haber process is shown below. N2(g) + 3H2(g) ⇌ 2NH3(g) What will be the effect of increasing the pressure on the amount of ammonia present at equilibrium? [1 mark]

Increase. This question is looking at a reversible reaction - the reaction can occur both forwards and backwards. Firstly to answer this question you need to appreciate that in a closed reaction the equilibr...
RV
Answered by Rebecca V. • Chemistry tutor
11626 Views

Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of a cell.

This is a "Describe" question worth 6 marks, so you should aim to write a minimum of 6 points in your answer to get the full 6 marks. Messenger RNA is produced in the nucleus of a cell by transcrip...
RV
Answered by Rebecca V. • Biology tutor
18779 Views

Given the points (6,6) and (10,8) calculate the gradient of the line passing through them and the point at which it intersects the y-axis?

To find the gradient use the formula:m = (y2-y1)/(x2-x1)Plug in values:m = (8-6)/(10-6) = 1/2Hence gradient = 1/2--Now using the equation for a line y = mx+c and point (10,8)8 = 1/2*10 + cc = 3Hence when the...
GA
Answered by Gilad A. • Maths tutor
4165 Views

Describe and explain three adaptations of succulent plants that allow them to live in hot and dry conditions.

There are many to choose from here but we'll take the two most important. Many succulents such as cacti have needles instead of leaves. This reduces the amount of water lost via transpiration meaning that th...
HP
Answered by Henry P. • Maths tutor
5999 Views