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Describe 2 ways mutations can occur

• DNA not copied properly before cell division: mistakes in copying; small errors - gene/point mutations • Chromosomes damaged/break: usually repair; but may repair incorrectly - large changes in may genes -...
JC
Answered by Jake C. • Biology tutor
3158 Views

Advice on Biological Natural Sciences Personal Statements

General tips It’s important that you don’t do too much. Better to a few things well than spread yourself too thin so that you’re overly grilled in interview. My recommendation is pick maybe 3 themes that you...
JC
4615 Views

John invests £8000 at compound interest rate of 1.5% per year. He wants to earn more than £2000 in interest. What is the LEAST time in WHOLE years that this will take?

Step 1) Create the formula: 8000 x 1.015 n Step 2) Equate to the target value: 8000 x 1.015 n = 2000 10000 (Common mistake is to use target of £2000 but you must also take into account the £8000 that is alre...
HH
Answered by Hamza H. • Maths tutor
3860 Views

0.0960g of Magnesium was reacted with 25cm^3 of HCL of 0.4mol/dm^3 concentration. Calculate the moles of each one and determine which one is in excess

Equations to usemoles = mass/Mrmoles= concentration*volumeAr of Magnesium = 12 Moles= 0.096/12 Moles=0.008Moles of HCL = 25/1000 x 0.4=0.1Therefore HCL is in excess
TG
Answered by Tom G. • Chemistry tutor
4856 Views

How does ADH help control water loss in the body?

ADH (anti-diuretic hormone) is a hormone that is released by the brain. It is released if there is too much water loss via the kidneys, if this occurs, then the pituitary gland releases ADH into the bloodstr...
AC
Answered by Alvin C. • Biology tutor
10582 Views