Environmental Chemistry Section 1.4

Question 1

Define Passive Transportation

Answer 1

Movement of molecules that does not require an input of energy

Question 2

Define Diffusion

Answer 2

The natural movement of molecules from an area of HIGH concentration to LOW concentration

Question 3

Define Osmosis

Answer 3

The movement of water molecules across a membrane due to a concentration gradient (HIGH to LOW)

Question 4

Define Active Transport

Answer 4

Energy is used to move molecules against the concentration gradient from LOW to HIGH concentration

Question 5

Define Ingestion

Answer 5

Breakdown of food particles for absortion

Question 6

Define Mechanical and Chemical breakdown

Answer 6

Mechanical: Physical breakdown of food (Chewing)
Chemical: Enzymes breakdown food into smaller particles

Question 7

Define Hydrolysis

Answer 7

The addition of WATER breaks down large food particles into it’s smaller form

Question 8

Define Substrate

Answer 8

The material on which an organism lives on

Question 9

Define Ingestion and Digestion

Answer 9

Ingestion- The process of taking food into are bodies
Digestion- The breakdown of food ( Chemical and Mechanical)