MBIO 3401 Lab Exam 1 Questions & Answers (Grade A+).docx

MBIO 3401 Lab Exam 1 Questions &
Answers (Grade A+)
Ubiquity -
correct answer ✅occurs everywhere


Microbes -
correct answer ✅-cause disease in plants and animals


-be used to produce antibiotics and other pharmaceuticals


-can be used to produce a wide range of food products


-can be used in industry


-important in nutrient cycling


Which plates are incubated agar side up/down? -
correct answer ✅lid up: PDA


lid down: TSA, BHI - condensation

,MBIO 3401 Lab Exam 1 Questions &
Answers (Grade A+)
Magnification -
correct answer ✅size of the object under the microscope


Objectives -
correct answer ✅lenses closest to the specimen on the
microscope slide


Resolution -
correct answer ✅distance between two objects


Contrast -
correct answer ✅light difference between two objectives


What is the difference between a compound and dissecting scope?
-
correct answer ✅-compound: used to view much smaller objects
(100-1000X)


-dissecting: used to view larger specimen; has no objectives (10-
200X)

, MBIO 3401 Lab Exam 1 Questions &
Answers (Grade A+)
Parfocal -
correct answer ✅once the low-power objective has been focused
sharply on the specimen, the high-dry an oil immersion objectives
will also be approximately in focus after they are rotated into place


Know how to label parts of a microscope. **Page 10-11 -
correct answer ✅-condenser diaphragm: adjusts the amount of
light entering the microscope


-stage


-oculars (eyepiece)


-revolving nosepiece


-objectives


-slide holder


-diaphragm lever