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Rhian Fraser

Get your children off to a great start this summer!

1285Students helped
5Questions answered
£35Per hour
Biology

Asked by Ahmad · 4 years ago

Vitamins are...........enzyme?

Vitamins are not enzymes they are chemical compounds we consume as food or supplements. They are needed for the molecular structure of fats and proteins which serve vital functions. Deficiencies in vitamins can lead to serious health problems. Many foods in the uk are fortified.

Maths

Asked by Yasmin · 4 years ago

How many digits are in one billion?

It used to be in the UK that one billion is a million million, but now in the UK we use a thousand million as one billion. This means currently a thousand million = one billion = 1,000,000,000. To answer your question, there are 10 digits in one billion.

Biology

Asked by Jeniffer · 4 years ago

Does heartbeat depend on the brain?

Hi Jennifer, this is a complicated question. The heart itself has the ability to generate its own contraction. This is due to all the cells of the heart (cardiac myocytes) working together in synchronisation. This is technically called a syncytium. They all carry small electrochemical impulses that drive the heart to contract. This contraction starts at the top right of the heart in an area know... more

Maths

Asked by Marius · 4 years ago

How to read a clock?

A clock is numbered 1-12 and has two hands, a long hand and a short hand. The short hand points to the hour it is and the long hand points to the minutes past the hour it is. The numbers on the clock start with 12 at the top and continue from 1-11. All the numbers have 4 small dashes between them, each representing a minute. The numbers on a clock will usually have a small dash above them, this al... more

Biology

Asked by Max · 4 years ago

The vaccine for tuberculosis contains a dead form of the tuberculosis bacterium. how does the body respond to the vaccine? How is passive immunity brought about? When is it needed?

There are several different types of vaccine, dead, attenuated and acellular. The idea is the the vaccines contain proteins/lipids that the immune system will react to without causing harm to the body so when the body encounters the live/real pathogen it will amount an appropriate and sufficient immune response so the body dosn’t get sick. When a dead pathogen is incorporated into a vaccine the bo... more

Rhian's profile picture

Rhian Fraser

Get your children off to a great start this summer!

1285Students helped
5Questions answered
£35Per hour