Bio 110 Final: Chapter 2

Question 1 of 10

1

___________________________________ make(s) up the nucleus of an atom.

Select one of the following:

Protons and electrons
Protons and neutrons
DNA and RNA
Neutrons and electrons
DNA only

Explanation

Question 2 of 10

1

Living organisms are composed mainly of which atoms?

Select one of the following:

calcium, hydrogen, nitrogen, and oxygen
carbon, hydrogen, nitrogen, and oxygen
hydrogen, nitrogen, oxygen, and helium
carbon, helium, nitrogen, and oxygen
carbon, calcium, hydrogen, and oxygen

Explanation

Question 3 of 10

1

The ability of an atom to attract electrons in a bond with another atom is termed its

Select one of the following:

hydrophobicity
electronegativity
solubility
valence
both a and b

Explanation

Question 4 of 10

1

Hydrogen bonds differ from covalent bonds in that

Select one of the following:

covalent bonds can form between any type of atom, and hydrogen bonds form only between H and O.
covalent bonds involve sharing of electrons, and hydrogen bonds involve the complete transfer of electrons
covalent bonds result from equal sharing of electrons, but hydrogen bonds involve unequal sharing of electrons.
covalent bonds involve sharing of electrons between atoms, but hydrogen bonds are the result of weak attractions between a hydrogen atom of a polar molecule and an electronegative atom of another polar molecule.
covalent bonds are weak bonds that break easily, but hydrogen ions are strong links between atoms that are not easily broken.

Explanation

Question 5 of 10

1

A free radical

Select one of the following:

is a positively charged ion.
is an atom with one unpaired electron in its outer shell.
is a stable atom that is not bonded to another atom
can cause considerable cellular damage
both b and d.

Explanation

Question 6 of 10

1

Chemical reactions in living organisms

Select one of the following:

require energy to begin
usually require a catalyst to speed up the process
are usually reversible
occur in liquid environments, such as water.
all of the above

Explanation

Question 7 of 10

1

Solutes that easily dissolve in water are said to be

Select one of the following:

hydrophobic
hydrophilic
polar molecules
all of the above
b and c only

Explanation

Question 8 of 10

1

The molecular mass of glucose is about 180 g/mol. If 45g of glucose is dissolved into a final volume of 0.5L of water, what is the molarity of the solution?

Select one of the following:

0.125M
0.25M
0.5M
1.0M
2.0M

Explanation

Question 9 of 10

1

The sum of the atomic masses of all the atoms of a molecule is its

Select one of the following:

atomic weight
molarity
molecular mass
concentration
polarity

Explanation

Question 10 of 10

1

Reactions in which water is used to break apart other molecules are known as ___________________ reactions.

Select one of the following:

hydrophilic
hydrophobic
dehydration
anabolic
hydrolysis

	Created by Christina Marshall over 6 years ago

Biology Quiz on Bio 110 Final: Chapter 2, created by Christina Marshall on 12/12/2017.

Bio 110 Final: Chapter 2

Question 1 of 10

___________________________________ make(s) up the nucleus of an atom.

Select one of the following:

Explanation

Question 2 of 10

Living organisms are composed mainly of which atoms?

Select one of the following:

Explanation

Question 3 of 10

The ability of an atom to attract electrons in a bond with another atom is termed its

Select one of the following:

Explanation

Question 4 of 10

Hydrogen bonds differ from covalent bonds in that

Select one of the following:

Explanation

Question 5 of 10

A free radical

Select one of the following:

Explanation

Question 6 of 10

Chemical reactions in living organisms

Select one of the following:

Explanation

Question 7 of 10

Solutes that easily dissolve in water are said to be

Select one of the following:

Explanation

Question 8 of 10

The molecular mass of glucose is about 180 g/mol. If 45g of glucose is dissolved into a final volume of 0.5L of water, what is the molarity of the solution?

Select one of the following:

Explanation

Question 9 of 10

The sum of the atomic masses of all the atoms of a molecule is its

Select one of the following:

Explanation

Question 10 of 10

Reactions in which water is used to break apart other molecules are known as ___________________ reactions.

Select one of the following:

Explanation