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What factors change the rate of diffusion? (3) and what is the relationship between these factors? (1)

Temperature - The higher the temperature the faster the movement of particles so there is an increased rate of diffusion and conversely lowering the temperature decreases the rate of diffusionConcentratio...

Answered by Aneisha D. • Biology tutor

2529 Views

What is meant by the term genotype and how does this differ from the phenotype?

The genotype of an organism is the combination of alleles, different copies of a gene at the same locus, (from the mother and father) that give rise to a particular trait whereas the phenotype is the obse...

Answered by Lucy S. • Biology tutor

2699 Views

How do vaccines prevent certain diseases?

Vaccines introduce a dead, inactive or altered form of a pathogen (a microbe that causes an infectious disease) into the body. These pathogens have antigens,

Answered by Alice M. • Biology tutor

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Explain why the balloons inflate in the bell jar model of the lungs, when the rubber sheet is pulled down. (3 marks)
When the sheet is pulled down, the volume in the jar increasesThis causes the pressure in the jar to decreaseTherefore, air enters the balloon, down the pressure gradient, causing the inflation.

MP
Answered by Manaswini P. • Biology tutor
13663 Views

Describe the structure of proteins (5)
The primary structure of proteins consist of the sequence of amino acids that are joined by peptide bonds. These amino acids are joined together via a condensation reaction. The secondary structure is for...
SK
Answered by Saiful K. • Biology tutor
18644 Views

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Top answers

What factors change the rate of diffusion? (3) and what is the relationship between these factors? (1)

What is meant by the term genotype and how does this differ from the phenotype?

How do vaccines prevent certain diseases?

Explain why the balloons inflate in the bell jar model of the lungs, when the rubber sheet is pulled down. (3 marks)

Describe the structure of proteins (5)

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