BIO 111 Actual Exam Questions and Answers | 2026 Update | 100% Correct.

BIO 111 Actual Exam Questions and Answers |
2026 Update | 100% Correct.
which component of an atom has the smallest mass?



a. electron

B. isomer

C.proton

D.neutron

E.electron

electron

In a DNA strand, successive nucleotides are linked by:

a. base stacking.

b. 2'-5' phosphodiester bonds.

c. hydrogen bonds.

d. peptide bonds.

e. 3'-5' phosphodiester bonds.

e. 3'-5' phosphodiester bonds.

5. Which of these choices contributes to the measurement referred to as atomic mass?

a. electrons and neutrons

b. protons, electrons, and neutrons

c. neutrons only

, d. protons and electrons

e. protons and neutrons

e. protons and neutrons

Two elements within the same group:

a. have the same number of shells.

b. have different numbers of electrons in their outermost shell.

c. occupy the same column on the periodic table of elements but have different numbers of

electrons in their outermost shell.

d. occupy the same row on the periodic table of elements.

e. occupy the same column on the periodic table and have the same number of electrons in

their outermost shell.

e. occupy the same column on the periodic table and have the same number of electrons in their

outermost shell.

A pair of shared valence electrons is referred to as a(n):

a. ionic bond.

b. hydrophobic effect.

c. van der Waals interaction.

d. covalent bond.

e. hydrogen bond.

d. covalent bond.

In the sequence 5'-AGGCCT-3', an available phosphate group would be found at the

nucleotide labeled "A."