Maintaining Life: Necessary Functions

Question 1

boundaries separate inside from outside

Answer 1

Maintaining Boundaries

Question 2

locomotion and movement of substances

Answer 2

Movement

Question 3

• ability to sense changes and react

- nerve cells are highly irritable and can communicate rapidly w/ each other

Answer 3

Responsiveness (irritability)

Question 4

• breakdown and absorption of nutrients

Answer 4

Digestion

Question 5

Digestion

mouth churning food into smaller pieces and have it placed in smaller forms

Answer 5

Mechanical

Question 6

Digestion

body converting food into nutrients

Answer 6

Chemical

Question 7

Metabolism

Answer 7

chem reactions within body

Question 8

Metabolism

Complex molecules to smaller ones

Answer 8

Catabolism

Question 9

Metabolism

smaller ones to larger molecules

Answer 9

Anabolism

Question 10

• eliminates wastes (excreta) via METABOLIC REACTIONS

- wastes may be removes through urine, feces, or sweat

Answer 10

Excretion

Question 11

• Occurs on:
  
  • Cellular Level
    
    • new cells are used for growth and repair
  • Organismal Level
    
    • reproductive system handles the task

Answer 11

Reproduction

Question 12

• increases cell or body size
• growth occurrence
  
  • cell constructing activities must occur at a faster rate than cell destroying ones

Answer 12

Growth