BSC2011L USF Lab Midterm Questions and Answers with Verified Solutions | Latest Update

BSC2011L USF Lab Midterm Questions and Answers with Verified
Solutions | Latest Update


QUESTION
What are the two ways microscopes can be classified?

Answer:
light or electron

QUESTION
Light microscopes use what to focus and magnify light rays?

Answer:
lenses

QUESTION
What kind of subjects are dissecting microscopes (a type of light microscope) used for viewing?

Answer:
Study objects in 3D at low magnifications; view small organisms/parts of organisms

QUESTION
What type of subjects are compound microscopes used for viewing?

Answer:
look at very small organisms or thin sections of larger organisms or organs at higher
magnification

QUESTION
What are the two types of electron microscopes?

Answer:
Scanning and transmission

QUESTION
What view does a transmission electron microscope give?

Answer:
view parts or cross-sections of an organisms

QUESTION
What view does a scanning microscope give>

Answer:
gives images of the surface of an object

, QUESTION
What happens to the field of view while adjusting the iris diaphragm?

Answer:
The amount of light either lessens or becomes greater on the sample. Closing the diaphragm cuts
the light and can make it easier to see the outline of the sample.

QUESTION
What are the two types of prokaryotes?

Answer:
Archaea and Bacteria

QUESTION
What does the domain Eukarya contain?

Answer:
protists, fungi, plants, and animals

QUESTION
What are the cell walls of bacteria composed of?

Answer:
peptidoglycan

QUESTION
What are the two types of bacteria?

Answer:
Gram Negative: thin peptidoglycan layer with an outer membrane Gram Positive: thick
peptidoglycan later with no outer membrane

QUESTION
What are the major types of bacterial cell shapes?

Answer:
coccus, coccobacilus, vibrio, bacillus, spirillum, spirochete

QUESTION
Describe cyanobacteria

Answer:
photosynthetic (autotrophs), contain chlorophyll a, phycocyanin, and phycoerythrin