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Biology
GCSE

What can happen to a red blood cell if placed into a solution that is more dilute than its own cell contents?

The red blood cell is an animal cell therefore has no cell wall and will change its shape and seize dependent on the concentrations of solutions around it. When placed in a more dilture solution a red ...

Answered by Martha K. Biology tutor
7571 Views

What is osmosis and where does it occur in the human body?

Osmosis is the movement of water from areas of high concentrations to lower concentrations across a semi permeable membrane. It occurs over these membranes in  cells of the body alllowing water to move...

Answered by Martha K. Biology tutor
51764 Views

Explain why it is important to take a full course of prescribed antibiotics.

An individual may feel better before completing a full course of antibiotics, however, this does not mean that all of the bacteria in the body have been destroyed.

If low levels of 

Answered by Laura M. Biology tutor
9020 Views

What is an enzyme and how does it work?

An enzyme is a biological catalyst (something that speeds up a chemical reaction), which is a protein, a chain made of many amino acid molecules. An enzyme has its own unique three-dimensional structure, ...

Answered by Merle B. Biology tutor
4750 Views

What is the difference between diffusion and active transport?

Diffusion is the movement of particles from a high concentration to a low concentration. This process does not require energy. An...

Answered by Emma W. Biology tutor
62051 Views

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