Edexcel AS Biology 6

Welcome to your Edexcel AS Biology 6

A difference between arteries and arterioles.

What is the function of lacteal ducts?

Which type of cells secrete HCl in the stomach?

What is the correct sequence which indicates the mechanism of opening a stomata?
a) Volume of guard cell increases.
b) H+ transported out of guard cells.
c) Water enters guard cells by osmosis.
d) K+ diffuses into guard cells.
e) Guard cells curve to open stomata.
f) Water potential of guard cells falls.g)K+ channels open.

Essential components of a circulatory system.

Which of the following is not a respiratory pigment?

The 3 parts which form the small intestine.

Structures found in the small intestine to increase the surface area of absorption.

A structure present in a villus.

A distinct feature of a closed circulatory system.

Which of the following are lipid soluble vitamins?
a) Vitamin E
b) Vitamin B
c) Vitamin C
d) Vitamin D

How does the food bolus travel upto the stomach?

The reason for the closure of A-V valves during the cardiac cycle.

Vessels carrying blood towards the heart.

A cell in the process of meiosis was seen to have a spindle with sister chromatids being drawn towards opposite poles of the cell. In what stage of meiosis was the cell?

Which part of the digestive system contains the appendix?

Where is Brunner's glands located?

Which artery arises from the left ventricle?

Which is not a component found in saliva?