Lecture 3: Body Organisation Flashcards Preview

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Flashcards in Lecture 3: Body Organisation Deck (13):
1

Name the three top functions of a protein

Structure for membranes, enzymes and hormones

2

How do cells maintain a closely regulated environment

Get a fresh supply of substrates, eliminate wastes and store/export products effectively

3

Advantages to being a single-celled organism

Small: dont require complex support, reproduction is simple and independent movement isn't necessary

4

Disadvantages to being single-celled

Ineffective if too large, insufficient surface area and internal transport over larger surfaces is more difficult

5

Advantage to being being multi-cellular

Organism can be large without large cells

6

Challenges with being multicellular

Absorption of food, oxygen, transportation within bodilfy factors, excretion, support, reproduction, communication and co-ordination between cells

7

How do multicellular organisms combat issues associated with being large and maintain a stable internal environment?

They have evolved behavioural responses and groups of specialized cells called tissues and organs

8

What organs provide a large surface area for gas exchange?

The lungs

9

What do the sacs and folded surfaces of the digestive tract enable?

Water conservation, allow entry of nutrients and excretion of waste while avoiding dehydration and contact with other organisms

10

Function of the kidneys?

Excrete nitrogenous waste, minimize water, nutrient and electrolyte loss

11

Function of the circulatory system?

Exchange with organs (kidneys and lungs) and transport between organs and cells

12

Teleology

A study based upon the theory that all natural things are desgined to fulfill a particular purpose.

13

What are the four basic tissue types in the body?

Epithelium, Connective, Muscle and Nervous