Human Biology Sem 1 Exam

Flexion

myosin

Bones

Lungs

2

Name two (2) types of enzyme inhibitors and describe the effect they have on enzyme action.                                                                                (6 marks)

Explain why she is observing this trend in her investigation

Name and describe the molecule produced by the process of cellular respiration

Explain what causes lactic acid to build up in muscle tissue

Is the build-up of lactic acid in muscle tissue reversible? Explain your              answer.                                                                                

Pancreas

The pancreas produces a wide variety of enzymes, including amylase, which breaks down starches into simple sugars; trypsin, which breaks down proteins into short chains of amino acids; and lipase, which breaks down fats into monoglycerides and fatty acids.

(Produces enzymes that break down carbohydrates, proteins, and fats)

The small intestine shown below contains lymphatic vessels but no capillaries. Which nutrient will be absorbed by this small intestine?

Two types of vessels absorb nutrients from the fluid in the small intestine. Capillaries absorb simple sugars, amino acids, and water. The byproducts of fat digestion, fatty acids and monoglycerides, are absorbed by lymphatic vessels. Each villus in the small intestine contains capillaries and a lymphatic vessel.

Bone ——- Cartilage

Functions of blood