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Review of the Nature of Life
Review of the Nature of Life
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Review of Chapters 1 and 2 in #Miller & Levine Biology
Flashcards
38 cards
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Practice quiz
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Questions
38
Answers
1
During a controlled experiment, a scientist isolates and tests
a single variable.
as many variables as she wants.
no more than three variables.
a control group.
2
When sugar is dissolved in water, sugar is the
solute.
solvent.
3
Which side of the water molecule has a slightly positive charge?
The O side
The H side
Both the H and O sides
4
Which of the following is NOT a function of proteins?
move substances into or out of cells
control the rate of reactions
store and transmit hereditary information
form important cellular structures
5
The factor that is varied in a controlled experiment is called the _____ variable.
control
dependent
hypothesis
independent
6
Biology is the study of
planet Earth.
plants and animals only.
the universe.
living things.
7
Which question would scientists NOT attempt to answer?
How can a certain disease be controlled?
Do angels exist?
What killed the dinosaurs?
What effect do high-power lines have on people?
8
Which of the following is NOT a characteristic of enzymes?
They are always proteins.
They are very specific.
They are not changed by the reactions they catalyze.
They are found only in living things.
9
What type of ion forms when an atom loses electrons?
negative
positive
neutral
10
What type of bond can one water molecule form with another water molecule?
hydrogen bond
ionic bond
covalent bond
11
The work of scientists usually begins with
sharing results.
careful observations.
drawing conclusions.
creating experiments.
12
If an atom contains 6 protons, 7 neutrons, and 6 electrons, its mass number is
13.
19.
6.
7.
13
Atoms share electrons in a(n)
covalent bond
nuclear bond.
ionic bond.
hydrogen bond.
14
The energy needed to get a reaction started is the
electrical energy.
activation energy.
chemical energy.
mechanical energy.
15
Which statement is NOT true of the water molecule?
It is neutral.
It can bond to other water molecules.
It is polar.
It is made up of ions.
16
Science is best described as a
collection of people's opinions.
way of knowing.
set of facts.
list of rules.
17
What are found in the space surrounding the nucleus of an atom?
electrons
neutrons
protons
18
Which of the following is NOT a lipid?
fat
oil
wax
DNA
19
Isotopes are atoms of the same element that differ in their number of
electrons.
neutrons.
protons.
20
If a scientist accepts a new idea only if it is supported by evidence, then he is showing
open-mindedness.
creativity.
skepticism.
curiosity.
21
In chemical reactions, atoms are
created.
destroyed.
rearranged.
22
In the chemical reaction 2H
2
+ O
2
---> 2H
2
O, what is/are the reactants?
2H2 and O2
2H2O
only O2
2H2, O2, and 2H2O
23
What are the smallest objects that biologists study?
cells
body organs
molecules
organisms
24
The process by which organisms keep their internal conditions fairly constant is called
variation.
evolution.
homeostasis.
metabolism.
25
Which pH value would indicate the strongest acid?
12
8
5
2
26
A solution that has more OH- ions than H+ ions is a(n)
acid.
base.
27
Which of the following is NOT a carbohydrate?
starch
table sugar
cellulose
corn oil
28
A proposed explanation for a scientific observation that can be tested by experimentation is
a theory.
a conclusion.
a variable.
a hypothesis.
29
What makes up a molecule of water?
1 atom of H and 1 atom of O
2 atoms of H and 1 atom of O
2 atoms of H and 2 atoms of O
1 atom of H and 2 atoms of O
30
Bonus question: Which is the most common isotope of carbon?
carbon-13
carbon-14
carbon-12
carbon-6
31
Which of the following is NOT a characteristic of all living things?
ability to reproduce
growth and development
require air to breathe
maintain a stable internal environment
32
Which statement is true?
A solution is a special type of mixture.
A mixture is a special type of solution.
33
What type of electron is available to form bonds?
The electrons closest to the nucleus
The electrons farthest from the nucleus (valence electrons)
34
Which is NOT a reason why carbon is such as special element?
Carbon can bond to other elements such as H, O, N, and P.
Carbon readily forms ionic bonds.
Carbon can bond to itself and form different structures.
Carbon has 4 valence electrons.
35
How many covalent bonds can carbon form?
2
4
1
8
36
Which statement is true about catalysts?
Catalysts slow down the rate of chemical reactions.
Catalysts lower the activation energy of a chemical reaction
Catalysts are used up during a chemical reaction.
All catalysts are enzymes.
37
Which of the following is a polymer?
protein
amino acid
fatty acid
simple sugar
38
A theory
is a problem to be solved.
is the opening statement of an experiment.
may be revised or replaced.
is always true.
