Each question in this quiz is timed.
What is the function of the Nucleus?
Control of the cell
To manufacture ATP
To modify amino acid chains
To induce enzyme activity
What is meant by the term: Magnification?
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
What is meant by the term: Resolution?
How much smaller an image appears when compared with the original object
What is the equation for calculating Magnification?
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.
Optical microscopes are , easy to use, and, pieces of equipment. They enable specimens to be viewed.
What is the wavelength of an Electron microscope?
0.004nm
0.004µm
0.02nm
0.002µm
The type of image displayed from a Transmission electron microscope is
2D
3D
The type of image displayed from a Scanning electron microscope is
Transmission Electron microscopes produce a grey-scale image
Scanning Electron microscopes produce a grey-scale image
To prepare a slide you dehydrate stain crush hydrate( dehydrate, stain, crush, hydrate ) the specimen, embed them in iodine methylblue eosin wax( iodine, methylblue, eosin, wax ), and, section split separate slice( section, split, separate, slice ) them.
What does acetic orcein stain? What colour would you expect?
Cytoplasm: red
Lipids: red
Cellulose: yellow
DNA and chromosomes: red
What is meant by the term 'differential staining'?
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.
The Golgi apparatus is a modifying unit
Mitochondria are 2-10 µm long
What is the function of the Chloroplast?
The site of protein synthesis
To manufacture water molecules; keeping plant cells hydrated
The site of photosynthesis
To give plants green pigments
What is the function of the vacuole?
To maintain turgidity.
To hydrate the cell in low water concentrations
To stimulate catabolic reactions
To trap pathogenic substances
Hydrolytic enzymes digest foreign matter
Prokaryotic cells contain hoops loops rings branches( hoops, loops, rings, branches ) of naked DNA. They also contain whip-like projections called flagella microvili undulipodia cillia( flagella, microvili, undulipodia, cillia ), as well as pili.
How do Prokaryotic cells divide?
Mitosis
Meiosis
Binary fission
Cytokinesis