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VCU Biology 101 Exam 1 Practice set #1 Questions and Answers
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VCU Biology 101 Exam 1 Practice set #1 Questions and Answers
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VCU Biology 101 Exam 1 Practice set #1Questions and Answers
Which of the following statements best describes the nature of a scientific hypothesis? -
Answer-c. A hypothesis is a tentative explanation that can be tested, usually through
experimentation.
A theory, as defined in scientific discourse, is: - Answer-d. a set of principles, supported
by evidence, that explains some aspect of nature.
Pasteur's experiments on spontaneous generation made correct use of a variable in that
Pasteur: - Answer-d. held all conditions constant in each test except one.
Which of the following characteristics are true of all scientific claims? - Answer-a. They
are capable of negation through further scientific inquiry, d. They stand or fall solely on
the basis of evidence, e. They are regarded as provisional pending the addition of new
evidence.
Evolution is a central, unifying theme in biology because: - Answer-c. the enormously
diverse forms of life on Earth have all been shaped by it.
Biologists generally define life in terms of a group of characteristics possessed by living
things. Which of the following is not a characteristic of living things? - Answer-e. All
living things are composed of more than one cell.
Carbon is an element with an atomic number of 6. Based on this information, which of
the following statements is true? - Answer-b. Carbon cannot be broken down into
simpler component substances, d. Each carbon atom will always have 6 protons.
Neon has an atomic number of 10 and thus has eight electrons in its second energy
level. Thus neon: - Answer-b. has a filled outer shell, c. has no tendency to form
covalent bonds.
Oxygen and hydrogen differ in their electronegativity. Thus: - Answer-a. They can share
electrons, but unequally.
A molecule that does not have a net of electrical charge at one end as opposed to the
other is: - Answer-d. a non-polar molecule.
You add sugar to your coffee, and the sugar dissolves. Thus the coffee is the ________
and the sugar is the ________. - Answer-b. solvent; solute.
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