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BIOLOGY 117 FINAL WITH 83 QUESTIONS & ANSWERS 2024 ( A+ GRADED 100% VERIFIED)
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BIOLOGY 117 FINAL WITH 83 QUESTIONS & ANSWERS 2024 ( A+ GRADED 100% VERIFIED)
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BIOLOGY 117 FINAL WITH 83 QUESTIONS & ANSWERS 2024( A+ GRADED 100% VERIFIED)
1. You and a friend are discussing the periodic table. When considering an element
that has 8 neutrons your friend immediately says it must be oxygen.
You disagree because....
a. Neutrons do not carry any charge.
b. Oxygen always has 10 neutrons.
c. It is the electrons that give an element its identity.
d. The identity of an element is defined by its number of protons and not its
neutrons.
e. Neutrons have to be the same number as the electrons.: d. The identity of an
element is defined by its number of protons and not its neutrons.
2. A friend of yours calls to say that his car would not start this morning. He asks
for your help. You say that you think the battery must be dead. If so, then jump-
starting the car from a good battery will solve the problem. In doing so, you are
________.
a. testing a theory for why the car will not start
b. comparing multiple hypotheses for why the car will not start
c. stating a hypothesis and using that hypothesis to make a testable prediction
d. making observations to inspire a theory for why the car will not start: c. stating a
hypothesis and using that hypothesis to make a testable prediction
3. Individual water molecules are made up of hydrogen and oxygen atoms bonded
covalently. We describe these covalent bonds as polar because a. the oxygen atom
donates an electron to each of the hydrogen atoms
b. the oxygen atom forms hybrid orbitals that distribute electrons unequally
around the oxygen nucleus
c. the electrons shared between the oxygen and hydrogen atoms spend more
time around the oxygen atom nucleus than around the hydrogen atom nucleus d.
one of the hydrogen atoms donates an electron to the oxygen atom
e. the oxygen atom has two pairs of electrons in its valence shell that are not
neutralized by hydrogen atoms: c. the electrons shared between the oxygen and
hydrogen atoms spend more time around the oxygen atom nucleus than around the
hydrogen atom nucleus
4. When carrying out a controlled experiment, it is important to:
a. All of these choices are correct.
b. change only one variable at a time.
,c. change multiple variables at once to see the full effect of the variables.
d. subject different groups to different conditions.: b. change only one variable at a
time.
5. The first cells were most similar to:
a. multicellular forms.
b. eukaryotes.
c. viruses.
d. None of these choices are correct.
e. prokaryotes.: e. prokaryotes.
6. Consider the two elements sodium (Na) and magnesium (Mg), which occupy the
same row in the periodic table of elements. Sodium and magnesium atoms have:
a. the same atomic number.
b. the same atomic masses.
c. None of the choices is correct
d. different atomic masses and the same number of electrons in their outer-most
orbitals.: c. None of the choices is correct
7. Covalent bonds involve two atoms sharing electrons between them whereas
noncovalent bonds involves one atom "stealing" the electrons from another atom.
This characteristic of noncovalent bonds makes them important to life because
a. They are weak in a cellular environment, so they can be made, broken, and
reformed easily.
b. They are strong in a cellular environment that holds atoms together tightly.
c. None of the other answer options is correct.
d. They can only occur in: a. They are weak in a cellular environment, so they can be
made, broken, and reformed easily.
8. Imagine walking through a tropical rainforest. You notice that there are
different types of trees, birds, insects, and a plethora of other living things. A few
weeks later you are taking a walk through the desert and notice that the trees,
birds, insects, and many other living things are different than those you saw in the
rainforest. Which of the statements best explains the differences between each of
these ecological systems?
a. Organisms that evolved in the rainforest found it easier to live in that eco-logical
system, so they have not spread out to evolve adaptations necessary to live in the
desert.
b. All of these choices are correct.
, c. The manner in which organisms interact with each other and their physical
environment shapes the diversity found in an ecological system.
d. Organisms in each ecological system are there by chance, and their pres-ence in
different ecological systems does not have a biological explanation.: c. The manner
in which organisms interact with each other and their physical environment shapes the
diversity found in an ecological system.
9. Which order accurately reflects the process of science as described in your
textbook?
a. Observation ’ question ’ hypothesis formulation ’ experiment ’ prove or dis-prove
hypothesis
b. Observation ’ experiment ’ hypothesis formulation ’ support or refute hypoth-esis
c. None of the choices is correct
d. Observation ’ question ’ hypothesis formulation ’ experiment ’ support or refute
hypothesis
e. Observation ’ hypothesis formulation ’ question ’ experiment ’ prediction: d.
Observation ’ question ’ hypothesis formulation ’ experiment ’ support or refute
hypothesis
10. The atomic mass of an element allows inferences about which of the following?
a. the number of protons plus neutrons in the element
b. the number of neutrons in the element
c. the number of protons plus electrons in the element
d. the number of protons in the element: a. the number of protons plus neutrons in the
element
11. Some viruses consist only of a protein coat surrounding a nucleic acid core. If
you wanted to radioactively label (tag) only the nucleic acids and not the protein,
you would use _____. a. radioactive phosphorus
b. radioactive nitrogen
c. radioactive carbon
d. radioactive sulfur: a. radioactive phosphorus
12. Suppose you discovered a new amino acid. Its R-group contains only
hydrogen and carbon atoms. Predict the behavior of this amino acid. a It is
both polar and hydrophilic. b. It is polar.
c. It is hydrophilic.
d. It is hydrophobic.: d. It is hydrophobic.
13. Which of the following graphs correctly illustrates the effects of fatty acid
saturation on membrane fluidity? (More saturated and less saturated refer to the
fatty acids in the phospholipids that make up the membrane). a. Graph C
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