Cells Random Retrieval

A doctor vaccinated a group of patients against poliomyelitis. He gave each patient two doses of vaccine, 3 months apart. Explain the differences between the mean concentrations of antibodies in blood samples 2 and 3.

On the diagram above, which structure is a lysosome?

When investigating osmosis, why is it better to calculate the percentage change in mass, rather than just the change in mass?

In the above diagram of three cells, will water move from :

During co-transport of glucose in the ileum, active transport is needed to establish a concentration gradient of which substance?

Which type of membrane protein is not involved in facilitated diffusion?

What effect does having more of molecule 'I' have on the membrane?

To perform a 'Root Tip Squash' , what do you have to do to your root tip cells prior to staining?

Which phase of mitosis is when the chromosomes line up along the equator?

Name the organelles which produce the spindle fibres. ( Spell it correctly)

What happens in S phase?

To look at a sample under a microscope, you need to prepare a temporary mount. Why does the specimen have to be thin?

To look at a fresh sample under a light microscope, you'll need to prepare a temporary mount. What is NOT used to stick the specimen to the microscope slide?

Use the scale bar ( assume it measures 2cm) to calculate the actual diameter of virus particle A ( Assume it measures 3.5cm)

Which of the following is bigger - 40m x 10^-10 or 5mm x 10 ^-7 , or 5m x 10^-10

Name structure A

Name this organelle

What is the main function of this organelle?

Name this organelle.

This is found inside most eukaryotic cells, what is B?