BIOLOGY EXAM 1 STUDY
GUIDE Q & A LATEST
UPDATE 2026/2027
Nitrogen (N) is much more electronegative than hydrogen (H). Which of
the following statements about the atoms in ammonia (NH3) is correct?
Select one:
A. There are nonpolar covalent bonds between each hydrogen atom and
the nitrogen atom.
B. The nitrogen atom has a full positive charge; each hydrogen atom has a
full positive charge.
C. Each hydrogen atom has a partial positive charge; the nitrogen atom
has a partial negative charge.
D. Each hydrogen atom has a partial negative charge; the nitrogen atom
has a full positive charge.
E. The nitrogen atom has a partial positive charge; each hydrogen atom
has a partial negative charge.
C. Each hydrogen atom has a partial positive charge; the nitrogen atom has a
partial negative charge.
,(Atom 1) 1/1 H (Atom 2) 3/1 H
Which of the following best describes the relationship between the atoms
described in Figure 2.1?
Select one:
A. They are polymers.
B. They contain 1 and 3 protons, respectively.
C. They are isotopes.
D. They are compounds.
E. They each contain 1 neutron.
C. They are isotopes.
Start
Which of these is the largest molecule?
Select one:
a. Disaccharide.
b. Polysaccharide.
c. Sucrose.
d. Monosaccharide.
e. Glucose.
b. Polysaccharide.
The sequence 5'-GAAUGA'3' may be found in which of the following?
Select one:
A. DNA only
B. RNA only
C. either DNA or RNA
D. neither DNA nor RNA
B. RNA only
Which of the following correctly describes bases that pair with each other
in the DNA double helix?
Select one:
, a. thymine bonds with cytosine
b. guanine bonds with thymine
c. adenine bonds with guanine
d. cytosine bonds with guanine
d. cytosine bonds with guanine
What is the name of the functional group shown in Figure 3.2?
Select one:
aldehyde
carboxyl
ketone
carbonyl
hydroxyl
carboxyl
When placed in an aqueous solution, amphipathic molecules will orient
themselves with
Select one:
a. hydrophobic hydrocarbon chains facing the water and hydrophilic head
groups in the middle.
b. hydrophobic hydrocarbon chains in the middle and hydrophilic head
groups facing the water.
c. hydrophilic hydrocarbon chains in the middle and hydrophobic head
groups facing the water.
d. hydrophilic hydrocarbon chains facing the water and hydrophobic head
groups in the middle.
b. hydrophobic hydrocarbon chains in the middle and hydrophilic head groups
facing the water.
What type of chemical reaction is shown above?
dehydration reaction
hydrolysis reaction
GUIDE Q & A LATEST
UPDATE 2026/2027
Nitrogen (N) is much more electronegative than hydrogen (H). Which of
the following statements about the atoms in ammonia (NH3) is correct?
Select one:
A. There are nonpolar covalent bonds between each hydrogen atom and
the nitrogen atom.
B. The nitrogen atom has a full positive charge; each hydrogen atom has a
full positive charge.
C. Each hydrogen atom has a partial positive charge; the nitrogen atom
has a partial negative charge.
D. Each hydrogen atom has a partial negative charge; the nitrogen atom
has a full positive charge.
E. The nitrogen atom has a partial positive charge; each hydrogen atom
has a partial negative charge.
C. Each hydrogen atom has a partial positive charge; the nitrogen atom has a
partial negative charge.
,(Atom 1) 1/1 H (Atom 2) 3/1 H
Which of the following best describes the relationship between the atoms
described in Figure 2.1?
Select one:
A. They are polymers.
B. They contain 1 and 3 protons, respectively.
C. They are isotopes.
D. They are compounds.
E. They each contain 1 neutron.
C. They are isotopes.
Start
Which of these is the largest molecule?
Select one:
a. Disaccharide.
b. Polysaccharide.
c. Sucrose.
d. Monosaccharide.
e. Glucose.
b. Polysaccharide.
The sequence 5'-GAAUGA'3' may be found in which of the following?
Select one:
A. DNA only
B. RNA only
C. either DNA or RNA
D. neither DNA nor RNA
B. RNA only
Which of the following correctly describes bases that pair with each other
in the DNA double helix?
Select one:
, a. thymine bonds with cytosine
b. guanine bonds with thymine
c. adenine bonds with guanine
d. cytosine bonds with guanine
d. cytosine bonds with guanine
What is the name of the functional group shown in Figure 3.2?
Select one:
aldehyde
carboxyl
ketone
carbonyl
hydroxyl
carboxyl
When placed in an aqueous solution, amphipathic molecules will orient
themselves with
Select one:
a. hydrophobic hydrocarbon chains facing the water and hydrophilic head
groups in the middle.
b. hydrophobic hydrocarbon chains in the middle and hydrophilic head
groups facing the water.
c. hydrophilic hydrocarbon chains in the middle and hydrophobic head
groups facing the water.
d. hydrophilic hydrocarbon chains facing the water and hydrophobic head
groups in the middle.
b. hydrophobic hydrocarbon chains in the middle and hydrophilic head groups
facing the water.
What type of chemical reaction is shown above?
dehydration reaction
hydrolysis reaction
