Cells Random Retrieval

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

Which term describes a solution with a lower water potential than the cells bathed in it?

In the above experiment, why would the student be advised to take repeat readings?

Which of the following is a similarity between diffusion an osmosis?

Which protein needs to be used first in the co-transport of glucose across a membrane. For example in the ileum.

In the above diagram, there are three membrane proteins: A, B and C. Which represents where co-transport occurs?

Does a concentration gradient need to be established before facilitated diffusion can take place?

Which part of the phospholipid bilayer prevents sodium ions leaving via simple diffusion?

Which is the best explanation for the effect of ethanol on membrane permeability?

What piece of equipment can you use to measure the colour change? (spell it correctly)

In a suspected lung cancer tissue sample, a histopathologist observed 19 cells out of a total of 320 in mitosis. The average mitotic index for healthy human lung tissue is 0.04. Is the patient likely to have cancer or not?

To calculate the 'Mitotic Index' you need to stain your root tip cells. Which of the following is NOT an appropriate stain to view Chromosomes with?

Put these letters in the correct order

Which phase is when the sister chromatids are pulled to opposite poles by the spindle fibres.

As well as being cold, what must the solution also be?

The image shows palisade cells in a leaf. Line A (width) measures 8mm, and the magnification of the image is x10,000. What is the actual width (A) of the palisade cell?

Which of the following is equivalent to 1mm x 10^-4 ?

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

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

Name this organelle.