Question 1
Question
What is the function of the Nucleus?
 
Question 2
Question
What is meant by the term: Magnification? 
 
Answer
- 
How much bigger an image appears when compared with the original object. 
- 
The ability to distinguish between 2 points clearly. 
- 
The magnifying power of the objective lens. 
- 
How much smaller an image appears when compared to the original object 
 
Question 3
Question
What is meant by the term: Resolution?
 
Answer
- 
How much bigger an image appears when compared with the original object. 
- 
The magnifying power of the objective lens. 
- 
The ability to distinguish between 2 points clearly. 
- 
How much smaller an image appears when compared with the original object 
 
Question 4
Question
What is the equation for calculating Magnification?
 
Answer
- 
Total magnification = Image size / Magnification. 
- 
Total magnification = Magnifying power of the objective lens x eyepiece lens. 
- 
Total magnification = Image size x Magnification. 
- 
There is no calculation. 
 
Question 5
Question
Optical microscopes are [blank_start]cheap[blank_end], easy to use, and, [blank_start]portable[blank_end] pieces of equipment. They enable [blank_start]live[blank_end] specimens to be viewed.
 
Question 6
Question
What is the wavelength of an Electron microscope?
 
Answer
- 
0.004nm 
- 
0.004µm 
- 
0.02nm 
- 
0.002µm 
 
Question 7
Question
The type of image displayed from a Transmission electron microscope is
 
Question 8
Question
The type of image displayed from a Scanning electron microscope is 
 
Question 9
Question
Transmission Electron microscopes produce a grey-scale image
 
Question 10
Question
Scanning Electron microscopes produce a grey-scale image
 
Question 11
Question
To prepare a slide you [blank_start]dehydrate[blank_end] the specimen, embed them in [blank_start]wax[blank_end], and, [blank_start]section[blank_end] them.
 
Answer
- 
dehydrate 
- 
stain 
- 
crush 
- 
iodine 
- 
methylblue 
- 
eosin 
- 
wax 
- 
section 
- 
split 
- 
separate 
- 
slice 
- 
hydrate 
 
Question 12
Question
What does acetic orcein stain? What colour would you expect?
 
Answer
- 
Cytoplasm: red 
- 
Lipids: red 
- 
Cellulose: yellow 
- 
DNA and chromosomes: red 
 
Question 13
Question
What is meant by the term 'differential staining'?
 
Answer
- 
Staining each structure in isolation to view structures individually. 
- 
Staining each structure differently to identify each structure. 
- 
Using a variety of stains upon the same component. 
- 
Using only one type of staining. 
 
Question 14
Question
The Golgi apparatus is a modifying unit
 
Question 15
Question
Mitochondria are 2-10 µm long
 
Question 16
Question
What is the function of the Chloroplast?
 
Answer
- 
The site of protein synthesis 
- 
To manufacture water molecules; keeping plant cells hydrated 
- 
The site of photosynthesis 
- 
To give plants green pigments 
 
Question 17
Question
What is the function of the vacuole?
 
Answer
- 
To maintain turgidity. 
- 
To hydrate the cell in low water concentrations 
- 
To stimulate catabolic reactions 
- 
To trap pathogenic substances 
 
Question 18
Question
Hydrolytic enzymes digest foreign matter
 
Question 19
Question
Prokaryotic cells contain [blank_start]loops[blank_end] of naked DNA. They also contain whip-like projections called [blank_start]flagella[blank_end], as well as pili.
 
Answer
- 
hoops 
- 
loops 
- 
rings 
- 
branches 
- 
flagella 
- 
microvili 
- 
undulipodia 
- 
cillia 
 
Question 20
Question
How do Prokaryotic cells divide? 
 
Answer
- 
Mitosis 
- 
Meiosis 
- 
Binary fission 
- 
Cytokinesis