BIO LAB EXAM 1 FINAL ADVANCED(2025/2026) | ACTUAL EXAM
QUESTIONS WITH DETAILED ANSWERS AND PRACTICE EXAM |
LATEST UPDATED AND VERIFIED FOR GUARANTEED PA
When you do a statistical test, what hypothesis are you actually testing (to accept or reject)?
1) results are considered significant
2) null hypothesis is rejected
What are the 9 steps of the scientific method?
1) make observations
2) form a hypothesis
3) make predictions
4) define variables
5) define experimental treatments
6) formalize test procedures
7) perform experiment and collect data
8) analyze data
9) repeat the process using more refined experiment
The movement of molecules in wanted from a higher concentration to a lower concentration
Diffusion
Light Source
built into the base with a lens that focuses light onto the lower condenser lens or may be a separate light
focused onto the condenser lens by a mirror
1 millimeter = ______ micrometers
4000
condenser
a system of lenses that focuses light on the object
Diaphragm
a mechanism built into the condenser that adjusts the amount of light that strikes the object. It can be
opened or closed using the lever on the side of the condenser to increase or decrease the amount of light
striking the
objective lenses
mounted on a revolving nosepiece or turret
most new microscopes are ______.
parfocal
when an object is in focus with one lens, the lenses can be changed without completely losing focus
, magnification
the lens closest to the specimen produces the _______
scanning
another word for the 4x magnification is ______ objective
low-power
another word for the 10x magnification is ______ objective
high-power
another word for the 40x magnification is ______ objective
oil immersion
another word for the 100x magnification is the _______ objective
resolving power
a second lens within the objective is responsible for determining the microscope's _______.
resolving power
the ability to reveal detail and distinguish two closely spaced objects as being two rather than one
Ocular lens (eyepiece)
The lens looked through that usually magnifies objects to 10 times their size
Body tube
In some cases, can be rotated, making it easier for someone else to view the specimen without moving
the entire microscope
Monocular
A microscope with one ocular
Binocular
A microscope with two oculars
Mechanical system
Includes the mechanical stage, coarse adjustment knob, fine adjustment knob, base, and arm
Mechanical stage
Holds the slide. It has adjustment knobs that move the slide in the horizontal plane, either side to side or
toward and away from you
Coarse adjustment knob
The stage can be moved vertically by turning the _____
Fine adjustment knob
The smaller knob inside the coarse adjustment knob that makes slight changes for precision focusing at a
high power
QUESTIONS WITH DETAILED ANSWERS AND PRACTICE EXAM |
LATEST UPDATED AND VERIFIED FOR GUARANTEED PA
When you do a statistical test, what hypothesis are you actually testing (to accept or reject)?
1) results are considered significant
2) null hypothesis is rejected
What are the 9 steps of the scientific method?
1) make observations
2) form a hypothesis
3) make predictions
4) define variables
5) define experimental treatments
6) formalize test procedures
7) perform experiment and collect data
8) analyze data
9) repeat the process using more refined experiment
The movement of molecules in wanted from a higher concentration to a lower concentration
Diffusion
Light Source
built into the base with a lens that focuses light onto the lower condenser lens or may be a separate light
focused onto the condenser lens by a mirror
1 millimeter = ______ micrometers
4000
condenser
a system of lenses that focuses light on the object
Diaphragm
a mechanism built into the condenser that adjusts the amount of light that strikes the object. It can be
opened or closed using the lever on the side of the condenser to increase or decrease the amount of light
striking the
objective lenses
mounted on a revolving nosepiece or turret
most new microscopes are ______.
parfocal
when an object is in focus with one lens, the lenses can be changed without completely losing focus
, magnification
the lens closest to the specimen produces the _______
scanning
another word for the 4x magnification is ______ objective
low-power
another word for the 10x magnification is ______ objective
high-power
another word for the 40x magnification is ______ objective
oil immersion
another word for the 100x magnification is the _______ objective
resolving power
a second lens within the objective is responsible for determining the microscope's _______.
resolving power
the ability to reveal detail and distinguish two closely spaced objects as being two rather than one
Ocular lens (eyepiece)
The lens looked through that usually magnifies objects to 10 times their size
Body tube
In some cases, can be rotated, making it easier for someone else to view the specimen without moving
the entire microscope
Monocular
A microscope with one ocular
Binocular
A microscope with two oculars
Mechanical system
Includes the mechanical stage, coarse adjustment knob, fine adjustment knob, base, and arm
Mechanical stage
Holds the slide. It has adjustment knobs that move the slide in the horizontal plane, either side to side or
toward and away from you
Coarse adjustment knob
The stage can be moved vertically by turning the _____
Fine adjustment knob
The smaller knob inside the coarse adjustment knob that makes slight changes for precision focusing at a
high power
