BIO 110 Exam 1 Practice Test Questions with Accurate Answers

BIO 110 Exam 1 Practice Test
Questions with Accurate Answers

What would be the net electrical charge of an atom with 4 protons, 5 neutrons, and 5
electrons? - ANSWERSA. 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? - ANSWERSA. 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? - ANSWERSA. 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? - ANSWERSA. 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? -
ANSWERSA. 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.