Energy Metabolism

Question 1

Metabolism

Answer 1

Set of processes which derive energy from raw materials from food stuffs and use them to support repair and growth and activity of the tissues of the body to sustain life.

Question 2

What is catabolism

Answer 2

Breaking down larger molecules into smaller ones

• releases free energy
• oxidative- release H atoms

Question 3

Anabolic pathways

Answer 3

Synthesise larger important cellular components from intermediary metabolites
Reductive

Question 4

What are the products of catabolism

Answer 4

1. Building block materials (sugars, amino acids, fatty acids)
2. Organic precursors
3. Bio synthetic reducing powers
4. Energy for cell function

Question 5

What is energy

Answer 5

Capacity to do work

Question 6

Why do cells need continuous supplies of energy?

Answer 6

1. Biosynthetic work- synthesis of cellular parts
2. Transport- moving things across membranes
   Maintainance of ion gradients
3. Mechanical work- muscle contraction
   Electrical work - nervous impulse conduction
   Osmotic work