Energy Study Guide

Question 1

Thermodynamics 1st law

Answer 1

Energy cannot be created nor destroyed but it changes form.

Question 2

Endergonic reaction

Answer 2

Chemical reaction that consumes energy

Question 3

Exergonic

Answer 3

This chemical reaction proceeds with the release of free energy.

Question 4

Understand the classification of carbohydrates

Answer 4

sugar, starch, cellulose, gums (pectins)

Question 5

60-75% of energy in a poultry diet is from?

Answer 5

Carbohydrates

Question 6

What are the functions of carbohydrates?

Answer 6

1. sources of heat and energy
2. provide structures for synthesis of other nutrients
3. energy storage through fat conversion

Question 7

Describe the structural differences between starch and hemicellulose.

Answer 7

Starch has alpha 1,4 and alpha 1,6 bonds which amylase recognizes.
Hemicellulose has alpha and beta bonds. amylose will not recognize beta bonds.

Question 8

Describe the poor utilization of carbohydrate fractions in SBM by the bird.

Answer 8

1. Contains pectins and free sugars which is a non starch polysaccharide with Beta bonds.
2. lack of 1,6 galactosidase in the body in order to utilize free sugars

Question 9

What are the structural differences between amylase and amylopectin?

Answer 9

amylase: alpha 1,4 linkages
amylopectin: alpha 1,6 linkages