Digestion And Metbolism

Question 1

What is metabolism?

Answer 1

The sum of all the chemical reactions that take place in the body.

Question 2

Is glucose the only fuel that can be used for cellular respiration?

Answer 2

No organic molecules such as:

Protein, fats, sucrose, & other disaccharides & starch can be used

Question 3

What does nutrition involve?

Answer 3

• Food being taken in, taken apart and taken up by an organism
• animals must consume food for energy
• animals must balance consumption, storage and food use.

Question 4

Food processing

IDEA**e and a swapped

Answer 4

•Ingestion:
act of eating food(voluntary)

•Digestion:
Breaking down food into smaller molecules that can be absorbed.
-mechanical=breaks food into smaller pieces.(increases surface area)
-chemical=processes digested materials into usable forms using enzymes

•Absorption:
Cells take up small molecules
Small molecules move into blood

•Egestion: releases undigested material

Question 5

Digestive compartments

Answer 5

•intercellularly:
Food vacuoles

1. Food is engulfed through phagocytosis
2. Food molecules fuse with lysosomes containing hydrolytic enzymes
3. Digestion occurs

•extracellularly:
Allows bigger molecules to be digested via organelles that are continuous with outside.

Question 6

Chylomicrons

Answer 6

Water soluble globules that transport triglycerides to the blood through lymphatic system.

Question 7

Lacteal

Answer 7

A vessel found at the core of each villus.

Part of lymphatic system

Question 8

Cecum

Answer 8

Ferments ingested material

*hence herbivores have larger cecum

Question 9

Appendix

Answer 9

Immunity