WorksheetsBio II Final Practice Questions
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
A scientist conducts an experiment to test the theory that a vitamin could extend a person’s life expectancy. What is the dependent variable?
a)
the person's life-expectancy
b)
the amount of vitamin
c)
the theory
d)
the scientist
2.
When news of a scientific discovery is reported, readers must assess the credibility of the claim. In general, which statement indicates a valid and credible claim?
a)
The scientist followed strict standards of investigation and scientific methodology throughout the research.
b)
The scientist assured that the experiment was broad in scope by testing many variables in each trial.
c)
The scientist restated the hypothesis after performing the trial in order to have a more accurate hypothesis.
d)
No other scientists replicated the experiment to avoid the legal issues of patent infringement.
3.
Which of the following is a characteristic of living things?
a)
They grow and develop
b)
They respond to the environment
c)
They are made up of cells
d)
All of these
4.
What is the study of life?
a)
Biology
b)
Ecology
c)
Zoology
d)
Botany
e)
Geology
5.
Scientists share findings with other scientists by publishing their hypotheses, experimental methods, results, and analysis in peer-reviewed scientific journals. What is the importance of this step in scientific investigations?
a)
It allows researchers to share ideas and certifies that the work meets standards of the scientific community.
b)
It allows researchers to share ideas and certifies that their work is correct.
c)
It is restricted to final proven experimental results by established scientists.
d)
It is not recommended, as sharing ideas would give away the results to competitors.
e)
It helps ensure that scientists will read journals.
6.
Which property of water BEST explains how salt is able to dissolve easily in water?
a)
Water is a polar molecule.
b)
Water has a high surface tension.
c)
Water is a compound of hydrogen and oxygen.
d)
Water is a nonpolar molecule.
e)
Water has a high heat capacity and melts the salt.
7.
Human blood has a pH of 7.4. How do buffers in the blood affect the pH?
a)
Buffers prevent small amounts of acid or base from changing the pH of blood.
b)
Buffers are acids that cause the pH of blood to decrease.
c)
Buffers are bases that cause the pH of blood to increase.
d)
Buffers are catalysts that prevent chemical reactions from changing the pH of blood.
e)
All of these are correct
8.
A map of eastern North American, showing the pH of rainfall in various states, indicated that the pH of rain in New York State varied from 4.22 to 4.40. According to these figures, the most acidic rainfall in New York State has a pH of
a)
4.22
b)
4.30
c)
4.35
d)
4.40
e)
None of these are correct
9.
What allows the three atoms in a water molecule to stay together?
a)
covalent bonds formed by shared electrons between atoms
b)
covalent bonds formed by electrons that transfer between atoms
c)
ionic bonds formed by electrons that transfer between atoms
d)
hydrogen bonds formed only by the electrons of the hydrogen atoms
e)
None of these are correct
10.
A team of scientists and engineers is working together to develop a new cleaning product. The team has identified a species of bacteria that gets energy by breaking apart lipids and oils. The team wants to isolate the key substance that the bacteria use for this process, and then adapt the substance for the new cleaning product. Which macromolecule should the team try to isolate from the bacteria?
a)
a protein that specifically binds lipids or oils
b)
a lipid or oil that is unique to the bacteria
c)
a carbohydrate that is about the same size as a typical lipid or oil molecule
d)
a nucleic acid that codes for the production of a lipid or oil
e)
None of these are correct
11.
Potassium contains 20 neutrons. How many electrons does it contain?
a)
19
b)
20
c)
21
d)
39
e)
32
12.
Which organelle is involved in the process called endocytosis?
a)
vesicles
b)
ribosomes
c)
centrioles
d)
chloroplasts
13.
A microscope with a 4x objective lens and a 10x ocular lens produces a total magnification of
a)
40x
b)
14x
c)
400x
d)
4000x
14.
The packaging and distribution center of the cell is the
a)
golgi apparatus
b)
ribosomes
c)
chloroplasts
d)
cell wall
e)
flagella
15.
A cell that requires a lot of energy might contain large numbers of
a)
mitochondria
b)
ribosomes
c)
chloroplasts
d)
cell wall
e)
lysosomes
16.
Plant cells have a large membrane-bound space in which water, waste products, and nutrients can be stored.
a)
vacuoles
b)
ribosomes
c)
chromosomes
d)
cell wall
e)
lysosomes
17.
The dispersal of ink in a beaker of water is an example of
a)
diffusion
b)
osmosis
c)
active transport
d)
endocytosis
e)
pinocytosis
18.
The cell will swell when it is placed in a(n)
a)
hypotonic solution
b)
osmotic solution
c)
hypertonic solution
d)
isotonic solution
e)
cells do not swell in any solution
19.
Microscopes can be used to explore cells. Which of the following types of microscopes is used to produce a three-dimensional image of the surface of a cell?
a)
scanning electron microscope
b)
transmission electron microscope
c)
simple light microscope
d)
compound light microscope
20.
Clem is developing a model of a cell. He labels a central structure as the nucleus and writes a caption that describes how DNA is kept inside the nucleus. Which is an important condition of Clem's model?
a)
The model describes eukaryotic cells, but not prokaryotic cells.
b)
The model describes animal cells, but not plant cells.
c)
The model describes plant cells, but not animal cells.
d)
The model describes a cell of a unicellular organism, but not a multicellular organism.
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