Form, Function & Homeostasis

Question 1

What is functional biology?

Answer 1

How an organism works

Question 2

Is diffusion faster with a higher or lower SA : V ratio?

Answer 2

Higher

Question 3

Do small organisms have a high or low SA : V ratio?

Answer 3

High

Question 4

How do large animals diffuse?

Answer 4

Highly folded surfaces, circulatory system and interstitial fluid

Question 5

What are the 4 types of animal tissue?

Answer 5

1. Connective
2. Epithelial
3. Muscle
4. Nervous

Question 6

Which two systems coordinate homeostasis?

Answer 6

Nervous and endocrine

Question 7

Explain the difference between regulators and conformers

Answer 7

Regulators: Constantly regulate their internal temp to stay at a certain range
Conformers: Propotional to external temp

Question 8

Explain the difference between ectothermy and endothermy

Answer 8

Ectothermy: Tolerate temp fluctuations
Endothermy: Maintain their internal temp within a narrow range

Question 9

Explain the difference between poikilotherms and homeotherms

Answer 9

Poikilotherms: variable body temp
Homeotherms: constant body temp

Question 10

How do animals balance heat loss and gain?

Answer 10

• Insulation
• Circulatory adaptions (vasodilation/constriction)
• Cooling via evaporation
• Behaviour
• Adjusting metabolic heat loss