1.1 - Introduction to cells

Question 0

Emergent properties are properties that occur in what type of organism?

Answer 0

Multicellular organisms

Question 1

What properties are caused by the interaction between component parts of a complex structure?

Answer 1

Emergent properties

Question 2

What are the functions of life?

Answer 2

Metabolism
Reproduction

Nutrition
Homeostasis
Response
Excretion
Growth

Question 3

All functions of life are performed by a single cell in which organisms?

Answer 3

Unicellular organisms

Question 4

The expression of some genes and not others refers to what?

Answer 4

Cell differentiation

Question 5

Cell differentiation allows the development of which types of cells?

Answer 5

Specialised cells

Question 6

What are the main uses of stem cells?

Answer 6

Embryonic development and therapeutic uses

Question 7

What types of stem cells be obtained?

Answer 7

Embryonic stem cells, cord blood stem cells, and adult stem cells (usually born the bone marrow)

Question 8

What does cell theory state?

Answer 8

All living organisms are composed of cells; the cell is the basic unit of life; cells arise from pre-existing cells

Question 9

What is the key factor in cell size limitation?

Answer 9

Surface area to volume ratio

Question 10

Why does surface area to volume ratio limit cell size?

Answer 10

Small surface area causes problems for transport across the cell membrane. Therefore, if the ratio is too small = substances don’t enter the cell as quickly as required and waste products accumulate; cells may overheat as metabolism would produce heat faster than it is lost over the cell’s surface

Question 11

As cell size increases, what happens to the surface area to volume ratio?

Answer 11

The surface area to volume ratio decreases