BIO 110 EXAM 1 PRACTICE TEST QUESTIONS AND ANSWERS | COMPLETE
INTRODUCTORY BIOLOGY EXAM 1 STUDY GUIDE 2026/2027
What would be the net electrical charge of an atom with 4 protons, 5 neutrons, and 5 electrons? - ANS
✔✔A. 0
B. -1
C. +1
D. +4
E. -4
Two atoms are bonded together but not sharing electrons. What type of bond(s) could be holding the
atoms together? - ANS ✔✔A. A covalent bond.
B. A hydrogen bond.
C. An ionic bond.
D. It could be A or B
E. It could be B or C
Consider the following electronegativity values:
Boron (B) = 1.8
Carbon (C) = 2.5
Chlorine (CL) = 3.2
Selenium (Se) = 2.6
Which of the following covalent bonds is the most polar? - ANS ✔✔A. C-Se2
B. C-CL
C. B-CL
D. Se-CL
E. More information is needed.
If the covalent bonds in a water molecule were nonpolar, what form would water likely take at room
temperature? - ANS ✔✔A. a solid
B. It would remain a liquid.
C. a gas
D. More information is needed.
Concerning the hydrolysis of macromolecules, which of the following is true? - ANS ✔✔A. Water is used
as a reactant.
B. Water is generated as a product.
C. Water is both a reactant and a product in hydrolysis reactions.
D. Hydrolysis reactions are used to build macromolecules.
E. Both A and D are true.
Refer to the figure above. What best describes this monomer: - ANS ✔✔A. An amino acid.
B. A monosaccharide.
C. A lipid.
D. An RNA nucleotide.
E. A DNA nucleotide.
INTRODUCTORY BIOLOGY EXAM 1 STUDY GUIDE 2026/2027
What would be the net electrical charge of an atom with 4 protons, 5 neutrons, and 5 electrons? - ANS
✔✔A. 0
B. -1
C. +1
D. +4
E. -4
Two atoms are bonded together but not sharing electrons. What type of bond(s) could be holding the
atoms together? - ANS ✔✔A. A covalent bond.
B. A hydrogen bond.
C. An ionic bond.
D. It could be A or B
E. It could be B or C
Consider the following electronegativity values:
Boron (B) = 1.8
Carbon (C) = 2.5
Chlorine (CL) = 3.2
Selenium (Se) = 2.6
Which of the following covalent bonds is the most polar? - ANS ✔✔A. C-Se2
B. C-CL
C. B-CL
D. Se-CL
E. More information is needed.
If the covalent bonds in a water molecule were nonpolar, what form would water likely take at room
temperature? - ANS ✔✔A. a solid
B. It would remain a liquid.
C. a gas
D. More information is needed.
Concerning the hydrolysis of macromolecules, which of the following is true? - ANS ✔✔A. Water is used
as a reactant.
B. Water is generated as a product.
C. Water is both a reactant and a product in hydrolysis reactions.
D. Hydrolysis reactions are used to build macromolecules.
E. Both A and D are true.
Refer to the figure above. What best describes this monomer: - ANS ✔✔A. An amino acid.
B. A monosaccharide.
C. A lipid.
D. An RNA nucleotide.
E. A DNA nucleotide.
