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Biology
GCSE

Draw a punnet square between two carriers of cystic fibrosis and from this, work out the odds of their child being affected with CF.

I will draw the punnet square on the whiteboard. After drawing it, the ratio of CC:Cc:cc will be 1:2:1 As a recessive gene, only people with the homozygous recessive genotype (cc) will have cystic fibrosi...

MB
Answered by Maddie B. Biology tutor
3413 Views

Describe the factors which affect the rate of diffusion.

Ficks law outlines the factors that affect diffusion. Diffusion gradient is the difference in concentration of the molecule either side of the membrane, the greater the difference the faster the diffusion...

NS
Answered by Nick S. Biology tutor
5515 Views

If blood glucose level is high, how does it return back to normal?

When a high blood glucose level is detected by the body, pancreas releases the hormone, insulin, into the bloodstream. The release of insulin results in glucose moving from the blood and into liver and mu...

SM
Answered by Samantha M. Biology tutor
3067 Views

What is the difference between a phagocyte and a lymphocyte?

One of the first cells to respond to an infection will be a phagocyteThese migrate to the pathogen (foreign object with potential to cause disease)They engulf the phagocyte in a process known as phagocyto...

OB
Answered by Omar B. Biology tutor
3131 Views

Why does the breathing rate not return to normal after vigorous exercise?

During vigorous exercise, muscles are not supplied with enough oxygen. This means that cells have to respire anaerobically. Anaerobic respiration involves no oxygen. This leads to a build-up of lactic aci...

SH
22519 Views

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