Cells Random Retrieval

On the diagram above, which structure is a lysosome?

During phagocytosis, the pathogen is detected by molecule A on the cell surface membrane. What are the molecules labelled A called?

Name the molecules that generate an immune response when detected by the body. Type your answer.

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

What is the water potential of pure water?

Other than glucose, which substance can be absorbed from the ileum via co-transport?

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

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

In the above experiment, two flasks contained identical masses of animal tissue, identical volume of a solution containing sodium ions, but an inhibitor of ATP production in flask F. Scientists concluded that flask G took up sodium ions by active transport. What is the evidence of this?

a) Uptake in flask G much greater than in flask F , showing use of ATP in flask G

b) Sodium ion concentration in flask G falls to zero, showing uptake against a concentration gradient

Name structure G.

In a garlic root tip squash, a student observed 124 cells, of which 19 has visible chromosomes. What was the mitotic index for that tissue?

Name the area where the sister chromosomes together, and attach to the spindle fibres here. (Spell it correctly)

How long is one complete cell cycle on this graph?

Which type of electron microscope can be used on a thick specimen?

Which type of electron microscope produces a 2D image?

The Christae of the mitochondrion shown in this picture are 2m x 10^-8wide (A). How many 'nm' is this ?

True or False : plasmids are passed on by binary fission only.

What substance is layer A made out of?

True or false : Prokaryotic DNA coils around histones.

What is the function of this organelle?