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BIO-111 Lab Exam #1

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

If the ocular lens of a microscope is 10x and the total magnification is 600x, what is the magnification of the objective lens?

a)

6,000x

b)

600x

c)

60x

d)

6x

2.

If many investigators working independently can validate a tentative explanation by arriving at the same conclusions, the explanation becomes a:

a)

Law

b)

Hypothesis

c)

Theory

d)

Principle

3.
What stage of Mitosis is this: 
a)
Prophase
b)
Anaphase
c)
Metaphase
d)
Telophase
4.

What type of pipette is this?

a)

Micropipette

b)

Transfer pipette

c)

Volumetric Pipettes

5.

What type of pipette is this?

a)

Micropipette

b)

Transfer pipette

c)

Volumetric Pipettes

6.

Why is it important to set the correct measurement on the pipette?

a)

Helps Monty to figure out how to hold the pipette

b)

Helps to give an accurate measurement and to prevent breakage of pipettes

c)

Helps to give an accurate measurement and to break the pipettes

d)

Helps to give an inaccurate measurement of the liquid and brake the micropipettes.

7.

Mason is working in a chemistry lab. He is using a micropipettor to prepare a solution. If he pushes to the second stop to fill the micropipettor, he will get ____________

a)

the correct amount of solution

b)

too much solution

c)

too little solution

d)

either too much or too little solution

8.

Keep your work area ___________ at the end of the lab.

a)

messy

b)

dirty

c)

neat and clean

d)

disorganized

9.
What phase of Mitosis is this?
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
10.
What phase of Mitosis is this?
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
11.
Half a chromosome is called what?
a)
Chromatid
b)
Centrioles
c)
Nucleic Acid
d)
Cheese
12.
What phase of Mitosis is this?
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
13.

This laboratory procedure is known as

a)

CLONING

b)

gel electrophoresis

c)

chromatography

d)

use of a dichotomous key

14.

A student performed a gel electrophoresis experiment. The results are represented in the diagram

below. Compared to the fragments at the top of the gel, the fragments at the lower end are

a)

larger, and move slower

b)

larger, and move faster

c)

smaller, and move faster

d)

smaller, and move slower

15.

In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

a)

convert the DNA into gel

b)

cut the DNA into fragments

c)

change the color of the DNA

d)

produce longer sections of DNA

16.
Based on these results whose blood was found in the blood stain at the crime scene?
a)
Bob
b)
Sue
c)
John
d)
Lisa
17.
Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?
a)
DNA is negatively charged so attracted to the positive end of the unit
b)
DNA is positively charged to attracted to the negative end of the unit
c)
the agarose gel in negatively charged
d)
the agarose gel is positively charged
18.
DNA fingerprinting works because
a)
Most genes are dominant
b)
All organisms contain RNA
c)
The most important genes are different among most people
d)
No two people, except identical twins, have exactly the same DNA 
19.
In gel electrophoresis, the largest DNA fragment will appear
a)
closest to the starting wells
b)
farthest from the starting wells
c)
three quarters away from the starting wells
d)
it depends on how many fragments there are
20.

Once DNA has been extracted from the nucleus of a cell, it is exposed to ______ ______ that act like biochemical scissors to cut the DNA.

a)

restriction enzymes

b)

gel agarose

c)

clotting factors

d)

electric shock

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