Free Printable Lab Exam 1

1.

What is the meaning of the following sign?

a)

Biohazard

b)

Use gas mask

c)

High voltage

d)

Poison

e)

Flammable

2.

Which of the following will you use in case any chemical gets in your eye or on your face?

a)

Microscope

b)

Incubator

c)

Eye wash station

d)

Biosafety cabinet

e)

Fire extinguisher

3.

All broken glass pieces should go into the:

a)

Biohazard bin

b)

Glass disposal box

c)

Trash can

d)

Incubator

e)

Recycling bin

4.

If I have to pipette out 5 µL amount of liquid, then I should use:

a)

Dropper

b)

Capillary

c)

Pipette

d)

Straw

e)

Micropipette

5.

If I need to keep my solution at a fix temperature of 37℃, then I will use:

a)

Incubator

b)

Safety cabinet

c)

Triple beam balance

d)

Oven

e)

Refrigerator

6.

Which of the following is the right way to work with chemicals in a lab?

a)

Drop in on your palm to see the color and texture of chemicals

b)

Waft liquid if you do not know what it is

c)

Drop it on your table to see the properties of the chemicals

d)

Directly smell chemicals from the bottle

e)

Taste chemicals to identify them

7.

I should:

a)

Not do any of the above activities mentioned

b)

Not eat in the lab

c)

Not horseplay in the lab

d)

Not apply cosmetics in the lab

e)

Not touch my contact lenses in the lab

8.

When I need to make a boiling water bath, I will use___

a)

Hot plate

b)

Safety cabinet

c)

Incubator

9.

Which of the following is a TRUE statement:

a)

Biosafety cabinet is used for working with dangerous chemicals

b)

Chemical fume hood can be used for working with harmful bacteria and viruses

c)

Biosafety cabinet has no HEPA filter

d)

Chemical fume hood is the most important to have in working with infectious microorganisms

e)

Biosafety cabinet does not exhaust air outside the building without decontamination

10.

Identify this equipment:

a)

Prepared slides

b)

Micropipette

c)

Microscope

d)

Beaker

e)

Pipette

11.

Of the following, which country uses the metric system of measurement?

a)

USA

b)

Burma

c)

Canada

d)

Liberia

e)

Myanmar

12.

Which of the following does not belong to the group?

a)

Degree celcius

b)

Liter

c)

Meter

d)

Gram

e)

Pound

13.

Convert: 1 m=____cm

a)

100

b)

1000

c)

10

d)

0.01

e)

.001

14.

Convert: 3µL=_____L

a)

3000000

b)

3000

c)

0.000003

d)

0.0000003

e)

0.003

15.

Convert: 5.9 g=____kg

a)

0.0059

b)

59000

c)

590000

d)

5900

e)

0.00059

16.

Convert: 37℃=____℉

a)

99

b)

120

c)

98.6

d)

100

e)

98.4

17.

What is the most common way to measure mass in a biology lab?

a)

Vernier calipers

b)

Micropipette

c)

Triple beam balance

d)

Thermometer

e)

Metric ruler

18.

If the temperature in Thailand is 50 ℃, what would you pack for this trip?

a)

Summery clothes

b)

Warm winter clothes

19.

Which of the following temperatures are NOT biologically important?

a)

212℉

b)

98.6℉

c)

0℉

d)

37℃

e)

100℃

20.

If you have to measure 10.00 mL of liquid, what will you use of the following that will give you a very precise measurement?

a)

Measuring cylinder of 25 mL

b)

Erlenmeyer flask of 25 mL

c)

Beaker of 100 mL

d)

Measuring cylinder of 20 mL

e)

Plastic pipette

21.

To measure liquid of volume 5.2 mL, you will use ___for precision

a)

Serological pipette

b)

Erlenmeyer flask

c)

Measuring cylinder

d)

Plastic pipette

e)

Dropper

22.

Convert: 111.57 g=_____mg

a)

0.11157

b)

111570

c)

1.1157

d)

11.157

e)

11157

23.

Body temperature is____, water boils at ____ and water freezes at ____

a)

98.6℉, 212℃, 32℃

b)

98.6℉, 212℉, 32℉

c)

37℃, 100℉, 0℃

d)

37℃, 100℃, 0℉

e)

98.6℃, 212℉, 32℉

24.

If the width of the block is 5 cm, length is 4 cm, and height is 2 cm, then the volume of the block is:

a)

20 cu.cm

b)

11 cm3

c)

40 cu.cm

d)

40 cm

e)

11 cu.cm

25.

If substance A dissolves in water and substance B dissolves in oil, then which of the following is true:

a)

A is hydrophobic and B is hydrophobic

b)

A is non-polar and B is polar

c)

A is hydrophilic and B is hydrophilic

d)

A is hydrophilic and B is hydrophobic

e)

A is non-polar and B is non-polar

26.

If salt and sugar dissolve in water and paraffin wax does not dissolve in water, then which of the following best describe the substances:

a)

Salt is hydrophobic, sugar is hydrophobic, and was is polar

b)

Salt is polar, sugar is hydrophilic, and wax is non-polar

c)

Salt is polar, sugar is non-polar, and wax is hydrophobic

d)

Salt is non-polar, sugar is non-polar, and wax is non-polar

e)

Salt is polar, sugar is polar, and wax is hydrophilic

27.

When you read the level of water in any measuring equipment, the level of water is:

a)

In a straight line due to polarity

b)

In a ‘n’ shape due to covalent bond

c)

In a ‘u’ shape due to hydrogen bond

28.

While reading the level of any liquid, especially water, always read as per following:

a)

Read the lower meniscus

b)

Read the straight line that is given by the water level

c)

Read the upper meniscus

d)

Read first the upper, then the lower, and then subtract the two to get the volume

29.

If your height is 165 cm, then your height in feet is 5’4’ and your height in meters is____

a)

16500

b)

540

c)

1.65

d)

16.5

e)

1650

30.

Convert: 450 mg=_____g

a)

0.450

b)

4500

c)

0.0450

d)

45

e)

450000

31.

Place these in the correct order:

a)

Prediction, observation, hypothesis, result

b)

Hypothesis, prediction, experiment, result

c)

Hypothesis, experiment, result, conclusion

d)

Observation, hypothesis, prediction, question

e)

Observation, question, prediction, hypothesis

32.

If you do not get the desired results to your observation, then what do you go back and change?

a)

Hypothesis

b)

Question

c)

Experiment

d)

Graphs

e)

Prediction

33.

There are 3 flowering plants in similar 3 pots and each of these are getting equal amount of water and sunlight. The first plant gets .01% of dishwashing liquid while the other two do not. The scientist wants to see which plant grows the tallest and flowers the most. Which of the following is a true statement?

a)

The dependent variable is plant growth and number of flowers; independent variable is dishwashing liquid

b)

The dependent variables are water and sunlight; dependent variable is plant growth and number of flowers

c)

The independent variable is plant growth and number of flowers; dependent variable is dishwashing liquid

d)

The constant variable is dishwashing liquid; independent variable is dishwashing liquid

e)

The independent variables are water and sunlight; dependent variable is dishwashing liquid

34.

“Exercising causes weight loss.” Which of the following statements is NOT true?

a)

Constant variable is diet, age, type of exercise

b)

Independent variable is exercising

c)

Dependent variable is weight loss

d)

Dependent variable is exercising and independent variable is time and type of exercising

35.

Which of the following is not a constant variable in the observation “exercising causes weight loss”

a)

Food type

b)

Time of exercise

c)

Age of participant

d)

Weight loss

e)

Type of exercise

36.

While testing for proteins in a biochemical reaction, the absence of protein gives blue color (tube A) and the presence of protein gives a violet color (tube B). Which of the following is true?

a)

Both A and B are negative controls as they are just test results

b)

Both A and B are positive controls as they are used in my experiment

c)

Tube A is a positive control while B is a negative control

d)

Tube A is a negative control while B is a positive control

37.

While working on the graph which of the following is a true statement?

a)

X axis shows independent variable while Y axis shows constant variable

b)

Both X and Y axes show independent variables and as constant variables are constant, they need not be shown on a graph

c)

X axis shows dependent variable while X axis shows independent variable

d)

X axis shows independent variable while Y axis shows dependent variable

e)

X axis shows control variable while Y axis shows dependent variable

38.

If you are studying the 10 students in a class for their favorite food: pizza, sandwich, burger, hotdog, then which graph will you use to represent your data?

a)

Line

b)

Bar

c)

Both line and pie

d)

Both bar and line

e)

Pie

39.

You are studying two machines for their efficiency in running time. In machine 1 you use crude gasoline as the fuel, and in machine 2 you use Kerosene. The running time results are as follows: Machine 1: 24 hours and Machine 2: 37 hours. Which of the following graph will you use to represent your data?

a)

Line

b)

Pie

c)

Both bar and line

d)

Bar

e)

Both bar and pie

40.

You are testing a hypothesis that salamanders disappeared from a flowerbed because an invasive ant species drove them away. To test this hypothesis you make 40 flowerbeds with the same number of salamanders in each bed. You then place the invasive ants into 20 flowerbeds, and leave the other 20 beds ant free. After a month, you count the number of salamanders in each flowerbed. What is the independent variable in this experiment?

a)

ants

b)

flowerbeds

c)

health of plants

d)

salamanders

41.

You are testing a hypothesis that salamanders disappeared from a flowerbed because an invasive ant species drove them away. To test this hypothesis you make 40 flowerbeds with the same number of salamanders in each bed. You then place the invasive ants into 20 flowerbeds, and leave the other 20 beds ant free. After a month, you count the number of salamanders in each flowerbed. What is the dependent variable in this experiment?

a)

salamanders

b)

ants

c)

health of plants

d)

flowerbeds

42.

You are testing a hypothesis that salamanders disappeared from a flowerbed because an invasive ant species drove them away. To test this hypothesis you make 40 flowerbeds with the same number of salamanders in each bed. You then place the invasive ants into 20 flowerbeds, and leave the other 20 beds ant free. After a month, you count the number of salamanders in each flowerbed. Which graph will you use to represent your data results?

a)

pie

b)

bar

c)

line

43.

The weight of a child was studies over a period of 6 years. The result found (weight in Kgs) is as follows: Age 1: 7, Age 2: 10, Age 3: 12, Age 4: 16, Age 5: 25. Which of the following graph will you draw to represent your data?

a)

bar

b)

pie

c)

line

44.

“The car will not start”. In this observation, which of the following will NOT be the hypothesis?

a)

We may have to check the engine

b)

May be it needs gas

c)

If I jump start, then my car should start

d)

The battery may be dead

e)

I think that it needs oil change

45.

“The incidence of colon cancer is much lower among Japanese populations living in Japan than among Caucasian populations in the United States. The incidence of colon cancer among Japanese living in the U.S. is similar to that of Caucasians living in the U.S.” Which of the following is a good hypothesis for this observation?

a)

Japanese people have higher rates of cancer when living in the U.S. than when they are living in Japan.

b)

The Caucasian populations living in the U.S. and in Japan eat unhealthy food and hence the rate of cancer is high in this population.

c)

Diet differences between those living in in the U.S. and those living in Japan cause the differences in the rate of colon cancer.

46.

Observation: If you make ice cubes from warm water the cubes freeze faster than if you made them from cold water. Which of the following is the independent variable?

a)

Water type

b)

Time to freeze

c)

Ice cube tray

d)

room temperature

47.

Observation: If you make ice cubes from warm water the cubes freeze faster than if you made them from cold water. Which of the following is the dependent variable?

a)

Temperature

b)

Time to freeze

c)

Ice cube tray

d)

Water type

48.

Observation: If you make ice cubes from warm water the cubes freeze faster than if you made them from cold water. Which of the following graph will you draw to represent your data?

a)

Bar

b)

Pie

c)

Line

49.

Which of the following should you include in your graph?

a)

Legend

b)

An appropriate title

c)

Labeled axis

d)

All the above

e)

Data points

50.

If in your experiment you are keeping all the guinea pigs in the same sized environment, same temperature, providing similar calorie of food, same amount of water, and same amount of exposure to sunlight. Then these variables are considered as:

a)

Dependent

b)

Constant

c)

Independent

d)

Treatment

e)

Cannot figure out as these are environmental factors

51.

What is albumin?

a)

Starch

b)

Reducing sugar

c)

Protein

d)

Lipid

e)

Polysaccharide

52.

For what does potassium-iodine test?

a)

Starch

b)

Lipids

c)

Nucleic acid

d)

Protein

e)

Reducing sugar

53.

Which test needs to be placed in a boiling water bath? Test for__

a)

Protein

b)

Glucose

c)

Starch

d)

Lipids

e)

Nucleic acid

54.

Through covalent bonding, two molecules combine to form a large molecule along with a water molecule, an example of:

a)

Ionization

b)

Hydrolysis

c)

Rehydration

d)

Hydrogenesis

e)

Dehydration

55.

What does Biuret reagent test?

a)

Polysaccharides

b)

Starch

c)

Glucose and Fructose

d)

Lipids

e)

Protein

56.

What does Benedict’s reagent test?

a)

Starch

b)

Polysaccharides

c)

Lipids

d)

Glucose and Fructose

e)

Protein

57.

Which organic compound is composed of amino acids?

a)

Proteins

b)

Starch

c)

Nucleic acids

d)

Lipids

e)

DNA

58.

The bonds that link the amino acids together is called as:

a)

Peptide bond

b)

Hydrogen bond

c)

Ionic bond

59.

Maltose is made up of:

a)

Glucose and glucose

b)

Polysaccharide chain of glucose molecules linked together

c)

Glucose and fructose

d)

Glucose and galactose

60.

The basic unit of lipids is:

a)

Glucose

b)

Simple sugars

c)

Amino acids

d)

Nucleotides

e)

Fatty acids

61.

The structure of glucose has ____carbons and ____oxygen atoms

a)

6 and 6

b)

12 and 6

c)

6 and 12

d)

3 and 6

e)

6 and 16

62.

Which of the following does NOT belong to the group:

a)

Starch

b)

Glucose

c)

Chitin

d)

Cellulose

e)

Glycogen

63.

Lipids are made up of mainly which two atoms?

a)

C and O

b)

N and C

c)

C and H

d)

Na, N, and C

e)

Cl and H

64.

The negative control for Benedict’s reagent shows ___ color, while positive control shows ___ color

a)

Violet and blue

b)

Blue and violet

c)

Bluish-black and blue

d)

Blue and orange/red

e)

Orange and bluish-black

65.

The negative control for Iodine’s reagent shows ___ color, while positive control shows ___ color

a)

Blue and violet

b)

Orange and bluish-black

c)

Bluish-black and blue

d)

Blue and orange/red

e)

Violet and blue

66.

Which of the following test is used for lipids?

a)

Brown paper

b)

Lugol’s

c)

Biuret

d)

Potassium Iodide

e)

Benedict’s

67.

Which of the following is a best example of proteins and will give a positive test to Biuret?

a)

Albumin

b)

Tomato juice

c)

Glucose

d)

Potatoes

e)

Oil

68.

Which two chemicals make up Biuret reagent?

a)

Copper-sulfate and sodium-hydroxide

b)

Copper-sulfate and glucose

c)

Glucose and sodium-hydroxide

d)

Potassium-iodide and sodium-hydroxide

e)

Water and sodium hydroxide

69.

Which of the following will give a strong and emphatic positive reaction for the presence of reducing sugars?

a)

Tomato juice and starch

b)

Potatoes and tomato juice

c)

Vegetable oil and starch

d)

Starch and glucose

e)

Tomato juice and glucose

70.

Which of the following will clearly give a positive reaction for the presence of starch?

a)

Water

b)

Potatoes

c)

Apple juice

d)

Vegetable oil

e)

Albumin

71.

What is the ratio of C:H:O in glucose

a)

3:4:2

b)

2:1:2

c)

1:3:1

d)

1:2:1

e)

2:1:1

72.

Which of the following will give a positive reaction to blot test on brown paper?

a)

Polysaccharide

b)

Starch

c)

Protein

d)

Lipids

e)

Reducing sugar

73.

If the objective magnification of a lens is 4X and the ocular magnification is 150X, then what is the total magnification?

a)

154X

b)

400X

c)

190X

d)

600X

e)

110X

74.

Identify the structure on the microscope that helps in contrast and helps to adjust the light level every time the magnification is changed.

a)

Rheostat

b)

Course adjustment knob

c)

Condenser

d)

Iris diaphragm

e)

Mechanical stage control knobs

75.

Which of the following terms describes that once the objective has been focused, then you can rotate to any next higher objective and the image will stay in coarse objective focus. You may just need to adjust the fine focus for a clear vision.

a)

Parcentral

b)

Parfocal

c)

Field of view

d)

Working distance

e)

Resolution

76.

Which of the following does not belong to the group?

a)

Animals

b)

Plants

c)

Fungi

d)

Protists

e)

Archaebacteria

77.

Which of the following does not belong to the group?

a)

DNA

b)

Nucleus

c)

Ribosomes

d)

Cytoplasm

e)

Cell Membrane

78.

Identify the cell structure

a)

Cell membrane

b)

Central vacuole

c)

Chloroplast

d)

Chlorophyll

e)

Nucleus

79.

Identify the cell structure

a)

Cell wall

b)

Chloroplast

c)

Cell membrane

d)

Golgi apparatus

e)

Central vacuole

80.

Identify the cell structure

a)

Nucleus

b)

DNA

c)

Nucleolus

d)

Mitochondria

e)

Golgi apparatus

81.

Identify the cell structure

a)

Nucleolus

b)

Mitochondria

c)

RER

d)

SER

e)

Golgi apparatus

82.

Identify the structure

a)

SER

b)

Vacuoles

c)

RER

d)

Nucleolus

e)

Mitochondria

83.

Identify the structure

a)

Mitochondria

b)

Nucleolus

c)

RER

d)

SER

e)

Vacuoles

84.

An amoeba belongs to kingdom ______ and it engulfs its food using ______ by the process called as ____

a)

Protista, pseudopodia, phagocytosis

b)

Fungi, central vacuole, phagocytosis

c)

Fungi, contractile vacuole, phagocytosis

d)

Protista, pseudopodia, plasmolysis

e)

Protista, heterocyst, plasmolysis

85.

When you place the elodea leaf in a ____ solution, the cell membrane shrinks the entire content of the inside of the cell. This process is called as ____

a)

1%. plasmolysis

b)

1%. pseudopodia

c)

10%. plasmolysis

d)

0.1%. plasmolysis

e)

0.1%. pseudopodia

86.

Why does the entire cell of elodea plant leaf not shrink? It is because it has presence of:

a)

Nucleus

b)

Cell wall

c)

Mitochondria

d)

Central vacuole

e)

Cell membrane

87.

Which of the following structures are found in an animal cell?

a)

Centriole and chloroplast

b)

Cell membrane and centriole

c)

Central vacuole and cell membrane

d)

Chloroplast and centriole

e)

Centriole and cell wall

88.

Identify the structure:

a)

Golgi apparatus

b)

RER

c)

SER

d)

Centriole

e)

Vesicle

89.

Identify the structure:

a)

RER

b)

Vesicle

c)

SER

d)

Golgi apparatus

e)

Centriole

90.

Identify the structure:

a)

Central vacuole

b)

Nucleus

c)

Mitochondria

d)

Plasmodesmata

e)

Chloroplast

91.

Identify the structure:

a)

Cell membrane

b)

Nucleus

c)

Chloroplast

d)

Plasmodesmata

e)

Mitochondria

92.

Which of the following does not belong to the group?

a)

Central vacuole

b)

Cell membrane

c)

Contractive vacuole

d)

Nucleus

e)

Pseudopodia

93.

Identify the structure:

a)

Pili

b)

Capsule

c)

Cell wall

d)

Cell membrane

e)

Flagella

94.

Identify the structure:

a)

Cell wall

b)

Flagella

c)

Capsule

d)

Cell membrane

e)

Pili

95.

Nitrogen fixing enzyme is found in structures called as____

a)

Plasmodesmata

b)

Vacuoles

c)

Chloroplasts

d)

Vesicles

e)

Heterocysts

96.

Cyanobacteria is a type of___

a)

Pathogenic bacteria

b)

Archaebacteria

c)

Photosynthetic bacteria

d)

Heterotrophic fungi

e)

Photosynthetic protist

97.

In a pathogenic bacteria, ____is used for movement

a)

Flagella

b)

Pili

c)

Peptidoglycan

d)

Pseudopodia

e)

Capsule

98.

In a pathogenic bacteria, ___ is used for sticking to host cells

a)

Peptidoglycan

b)

Flagella

c)

Pseudopodia

d)

Pili

e)

Capsule

99.

_____ can be used for expelling out excess water and to maintain water balance in the cell. These are clear vesicles that serve a role in excretion in certain protist cells

a)

Vesicles

b)

Central vacuole

c)

Contractile vacuole

d)

Centrioles

e)

Centrosome

100.

Which of the following is not found in a bacterial cell?

a)

Ribosomes

b)

Cell wall

c)

Cytoplasm

d)

Nucleus

e)

DNA

101.

If the total magnification of a microscope is 1000X and the ocular magnification is 10X, then the objective magnification of the lens used is:

a)

100X

b)

10X

c)

990X

d)

1010X

e)

500X

Lab Exam 1

Total questions: 101

Worksheet time: 2hrs 33mins

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