OCR AS Biology 7

Welcome to your OCR AS Biology 7

Which of the following feature in the veins would help prevent the backflow of blood?

Why are blood samples normally taken from veins rather than arteries?

What happens when the blood enters an artery at low pressure?

Which of the following aids in stretching and recoiling of alveolar walls?

Capillaries form a network throughout every tissue in the body except ________.

Which of the following is not a function performed by the small intestine?

Blood in veins is dark red in colour. What does it imply?

What is the major method of food absorption in small intestines?

Capillary networks are also called the _________.

The feel of 'pulse' in your wrist is due to ________.

What is the role of aminopeptidase found in the intestinal juice?

Which of the following is not a component of gastric juice?

What is the function of dipeptidases?

A similarity between arteries and veins.

What is the function of enzyme pepsin?

Which is not an adaptation of small intestine for food absorption?

Select the incorrect statement regarding the food digestion in colon.

Tissue fluid is the result of _______.

Select the incorrect statement regarding tissue fluid.

Which of the following principles is not used by the small intestine for absorption?