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Unit 1 Scientific Investigation

Total questions: 47

Worksheet time: 47mins

Name
Class
Date
1.

When graphing your results, which variable in the experiment should go on the x-axis?

a)

Independent Variable

b)

Dependent Variable

c)

Control Variable

d)

Constant

2.

A student wants to examine whether the average height in her class differs between males and females. What kind of graph would she use to display her data?

a)

Bar Graph

b)

Line Graph

3.

1)What is the dependent variable in Jane’s experiment?

a)

Weight of algae

b)

number of crabs

c)

number of snails

4.

What is the control in Jane’s experiment??

a)

Buckets with crabs

b)

Buckets with no crabs

5.

What is the independent variable?

a)

Days in June

b)

individuals/m2

6.

How would you describe the overall trend for the ladybug population between June 12th and June 14th?

a)

Increase

b)

Decrease

c)

Stay the same

7.

Trisha was measuring the height of fertilized pea plants in her experiment every day and recording the change in height in millimeters. What instrument would be most appropriate and accurate for her to use to take these measurements?

a)

graduated cylinder

b)

metric ruler

c)

digital scale

d)

yardstick

8.

Which of the following is not a characteristic of life?

a)

requires oxygen

b)

made of cells

c)

grow and develop

d)

maintain homeostasis

9.

Which of the following is an example of a quantitative observation?

a)

The height of the chair is 60cm

b)

The chair is blue

c)

The legs of the chair are metal

d)

The chair is old

10.

Which of the following is an example of a qualitative observation?

a)

The spider has 8 legs

b)

The spider is covered in hair

c)

The spider has 2 fangs

d)

The spider is frightened

11.

A student wanted to study the effect of sugar on brain activity in mice. What would be a good control group?

a)

10 mice that receive 100mg of sugar

b)

10 mice that receive 50mg of sugar

c)

10 mice that receive 25mg of sugar

d)

10 mice that receive 0mg of sugar

12.

What is the correct level of organization from smallest to largest?

a)

cell >> atom >> tissue >> organ

b)

atom >> cell >> tissue >> organ

c)

organ >> cell >> tissue >> atom

d)

atom >> organ >> cell >> tissue

13.

Which is an example of homeostasis in humans?

a)

The pancreas maintains blood glucose level by producing insulin

b)

A bacterial infection caused a fever

c)

A spider bite causes swelling

d)

Falling down caused an ankle bone to break

14.

The variable that changes in response to what the scientist changes (what is being measured).

a)

independent

b)

dependent

15.
The diagram shows a graduated cylinder containing water.  From which position will the most accurate measure of the volume of water be made?
a)
Position 1
b)
Position 2
c)
Position 3
d)
Position 4
16.
What equipment would a scientist most likely use to measure the volume of a liquid?
a)
Graduated cylinder
b)
Triple beam balance
c)
  Ruler
d)
Electron microscope
17.
What can you infer about the temperature for E.coli bacterial growth?
a)
E. coli does not grow well at low and high temperatures.
b)
E coli will continue to grow at very high temperatures.
c)
E.coli grows best at very low temperatures
d)
E.coli grows best at very high temperatures.
18.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. The fact that we kept the light, plant, and water the same in each experiment are examples of ____________.
a)
an dependent variable
b)
an independent variable
c)
a control
d)
constants
19.
Which statement best states the importance of using control groups?
a)
Control groups allow comparison between subjects receiving a treatment and those receiving no treatment.
b)
Control groups eliminate the need for large sample sizes, reducing the number of measurements needed.
c)
Control groups eliminate the need for statistical tests and simplify calculations.
d)
Control groups provide a method by which statistical variability can be reduced.
20.
People long ago believed that maggots came from meat. In the late 1600s, Francesco Redi made the hypothesis that maggots came from flies rather than from meat. Which of these experimental designs could be used to test Redi's hypothesis?
a)
A
b)
B
c)
C
d)
D
21.
A set of concepts that offer explanations for observed patterns in nature. It has been tested and supported many times.
a)
theory
b)
law
c)
hypothesis
d)
inference
22.

Which of the following is/are properties of life?

a)

the ability to take in energy and molecules and use them (metabolism)

b)

the ability to reproduce

c)

based on a universal genetic code

d)

all of the other answers are correct.

23.

What do we call the maintenance of internal conditions of an organism within a certain boundary range?

a)

Evolution

b)

Homeostasis

c)

Photosynthesis

d)

Adaptation

24.

The basic unit of structure and function of living things is the ___________.

a)

cell

b)

DNA

c)

homeostasis

d)

protein

25.

Which of the following is NOT a characteristic of living things?

a)

grows and develops

b)

consists of more than one cell

c)

can reproduce

d)

maintains homeostasis

26.

Which step is generally first in a scientific investigation?

a)

making observations

b)

making a hypothesis

c)

performing the experiment

d)

drawing conclusions

27.
What is the volume of the ring?
a)
4.7 mL
b)
1.7 mL
c)
3 mL
d)
12.7 mL
28.

The scientific study of life.

a)

Chemistry

b)

Physics

c)

Astronomy

d)

Biology

29.
Find total magnification for:
Eyepiece = 20X 
Objective lens = 20X  
a)
20x
b)
40x
c)
200x
d)
400x
30.
When viewing the specimen, start by using the _____________ first to bring the object in to focus.  Next use the ____________ to be able to view the specimen in more detail.
a)
course adjustment knob; fine adjustment knob
b)
fine adjustment knob; course adjustment knob
c)
nosepiece; eypiece
d)
base; arm
31.
What should you wear to protect your eyes in lab?
a)
Safety Googles
b)
Glasses
c)
Sun glasses
d)
Mask
32.

Made up of more than one cell.

a)

unicellular

b)

multicellular

c)

system

d)

quaternary

33.

Made up of a single cell

a)

prezygotic

b)

monocyte

c)

unicellular

d)

multicellular

34.

Anatomical unit composed of tissue serving a common function.

a)

cell

b)

organelle

c)

organ

d)

limb

35.

Anatomical system composed of a group of organs that work together to perform a specific function.

a)

organ system

b)

cell system

c)

tissue

d)

organelle

36.
A hypothesis is a statement that-
a)
can be tested
b)
is almost always true
c)
is almost always false
d)
is the same as a theory
37.

When should you notify the teacher if something goes wrong in the lab?

a)

immediately

b)

at the end of class

c)

have your mom email the teacher later

d)

never

38.
It is hot outside. You start sweating. In this case, the hot weather is the...
a)
stimulus
b)
response
c)
cause and effect
d)
responder
39.

The combination of chemical reactions through

which an organism builds up or breaks down

materials as it carries out its life processes is called ...

a)

absorption

b)

metabolism

c)

digestion

d)

consumption

40.

A camel has eyelashes that work to keep the dust and sand out of its eyes. Which characteristic of life does this represent?

a)

All living things adapt to their environment

b)

All living things grow

c)

All living things have cells

d)

All living things use energy

41.

Which of the following is a response?

a)

a flashlight shined into the eye

b)

a rubber band popping your hand

c)

your pupils constricting when exposed to bright light

d)

blood glucose levels drop significantly

42.

Over three years, Tim's height has increased from 5'4" to 5'11". Which characteristic of life does this represent?

a)

All living things contain cells

b)

All living things maintain homeostasis

c)

All living things use energy

d)

All living things grow

43.
When a baby kitten becomes an adult cat, this is an example of...
a)
energy metabolism
b)
growth and development
c)
response to stimuli
d)
having cells
44.

__________ is the belief that life can arise from non-living things.

a)

biogenesis

b)

spontaneous generation

c)

cell theory

d)

evolution

45.

The scientists by the last name of ______________ took 2 flasks of gravy & heated them but failed to boil them long enough. When microorganisms grew he stated that spontaneous generation was supported.

a)

Redi

b)

Needham

c)

Spallanzani

d)

Pasteur

46.

This scientist came up with a method still used today for preserving our food and drink.

a)

Needham

b)

Redi

c)

Pasteur

d)

Spallanzani

47.

Why did Pasteur boil the broth in his experiment?

a)

To sterilize it

b)

To create life

c)

To warm the microbes

d)

To create bubbles

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