Session 1 (Basic Cell Structure)

Question 1

What is euchromatin?

Answer 1

Light matter seen in nucleus

Expressed genes

Question 2

What is heterchromatin?

Answer 2

The dark matter in a nucleus

Genes not expressed, wrapped up in solenoid form

Question 3

Limit of resolution is directly proportional to what?

Answer 3

Wavelength

Question 4

What does amphipathic mean?

Answer 4

Both hydrophilic and hydrophobic

Question 5

What is the cells coat called?

Answer 5

Glycocalyx

Question 6

What are the functions of the cell membrane? (4)

Answer 6

Selective permeability
Endo/exocytsis
Signal transduction
Intracellular adhesion and recognition

Question 7

What does the Golgi apparatus do? (4)

Answer 7

Modifies, sorts, concentrates and packages proteins

Question 8

What are the two types of secretion?

Answer 8

Constitutive and regulated

Question 9

What do lysosomes contain?

Answer 9

Hydrolytic enzymes

Question 10

What do lysosomes have that protects their plasmalemma?

Answer 10

A layer of glycocalyx

Question 11

What do peroxisomes do? How?

Answer 11

Detoxification by oxidising toxic compounds

Question 12

What makes up the cytoskeleton? (4)

Answer 12

Actin filaments
Intermediate filaments
Keratin filaments
Microtubules