Lecture 1

Question 1

Describe prokaryotes

Answer 1

1. No nucleus
2. 2 groups - Archaea and Bacteria
3. No organelles as such
4. No membrane bound organelles
5. Diverse

Question 2

Describe eukaryotes

Answer 2

1. True nucleus
2. Membrane bound organelles
3. Mitochondria

Question 3

What is the central dogma of molecular biology

Answer 3

That DNA is transcribed into RNA and that the RNA is translated into protein

Question 4

What are the four key macromolecules?

Answer 4

Sugars, Fatty acids, Amino acids and Nucleotides

Question 5

What is special about mammalian cells

Answer 5

They are compartmentalised due to the presence of plasma membranes

Question 6

What is the plasma membrane?

Answer 6

Selective, semi permeable barrier that maintains the correct concentration of key molecules inside the cell

Question 7

List a few organelles with a single membrane

Answer 7

ER and Golgi apparatus

Question 8

List a couple of organelles with a double membrane

Answer 8

Nucleus and mitochondria

Question 9

What is the inside of a cell like?

Answer 9

Its like a viscous goo

Question 10

How does movement occur in the cell?

Answer 10

A cytoskeleton allows this

Question 11

What is homeostasis

Answer 11

The property of a system, especially in a living organism to regulate its internal environment so as to maintain a stable, constant condition

Question 12

What is apoptosis

Answer 12

Programmed cell death in multicellular animals