1.2

Question 1

Define magnification:

Answer 1

The number of times an image is enlarged

Question 2

Define resolution:

Answer 2

The ability to distinguish between two separate points

Question 3

Outline why electron microscopes have a much higher resolution than light microscopes

Answer 3

Beams of electrons have a much shorter wavelength than light, so electron microscopes have a much higher resolution

Question 4

True or False - prokaryotes are compartmentalised?

Answer 4

False, they don’t have any membrane bound organelles

Question 5

True or false - eukaryotes are compartmentalised?

Answer 5

True

Question 6

Describe the structure and function of organelles within exocrine gland cells of the pancreas

Answer 6

Function: it manufactures & secrets digestive enzymes
RER: synthesises proteins that help with digestion
Golgi: turns vesicles into secretory vesicle
Vesicles: transport digestive enzyme
Mitochondria: creates ATP to carry out chemical reactions to help vesicles move

Question 7

Outline how prokaryotes divide by binary fission

Answer 7

The cell elongates and DNA elongates
Cell wall & plasma membrane divides
Cross wall forms completely around each DNA copy
The 2 cells separate

Question 8

Draw the ultrastructure of prokaryotic cells based on electron micrographs

Answer 8

…

Question 9

Draw the ultrastructure of eukaryotic cells based on electron micrographs

Answer 9

…

Question 10

State 3 differences between animal & plant cells

Answer 10

Plant: 
Have cell wall
Have chloroplasts
Have centrioles
Have large permanent vacuoles

Animal:
Have no cell wall
Have no chloroplasts
Have no centrioles
Have small temporary vacuoles