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Biology 104 Exam 1 Practice Test 100% solved
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Biology 104 Exam 1 Practice Test
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Biology 104: Exam 1 Practice Test1. In a water molecule (H2O), the oxygen atom: - Answer -B) carries a partial negative
charge
2. Which domains of life include prokaryotic cells? - Answer -B) Bacteria and Archaea
4. What is a hydrogen bond? - Answer -B) An attraction between partial positive and
negative charges
5. Thepromoterofagenedetermines: - Answer -B) where transcription will begin
7. Of the structures listed below, what is the smallest structure that has all the properties
of life? - Answer -C) Cell
9. The overall three-dimensional shape of a single polypeptide chain is called its: -
Answer -D) tertiary structure
10. What parts of a nucleotide can form a phosphodiester bond with one another? -
Answer -C) The 5' phosphate group and the 3' hydroxyl group
11. When a pre-mRNA molecule is spliced to produce a mature mRNA molecule, the
sequences that are spliced together and retained in the mature mRNA are called: -
Answer -D) exons
12.An atom is most stable (and least chemically reactive) when: - Answer -D) its
valence shell is full
13. The coding (nontemplate) strand of a portion of a gene has the sequence 5'-
AAGCGTGTTGC-3'. What is the sequence of the mRNA molecule that will be produced
based on the information in this DNA molecule? - Answer -C) 5'-AAGCGUGUUGC-3'
14. Which of the following statements about the phospholipid bilayer is INCORRECT? -
Answer -D) The addition of saturated fatty acids to a phospholipid bilayer will increase
its fluidity.
15. When a gene sequence from a bacterial cell is placed into a eukaryotic cell, the
eukaryotic cell can synthesize the correct protein encoded by gene. However, if a
eukaryotic gene is placed into a bacterial cell, the bacterial cell cannot use the
information to synthesize the correct protein. Why is a bacterial cell unable to
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