2026 WITH QUESTIONS AND WELL-
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ACTUAL EXAM 2026 [BRAND NEW]
Which of the following is the most abundant element in the human body?
A) nitrogen
B) carbon
C) oxygen
D) phosphorous
E) none of the above - ANSWER- B) carbon
Which of the major types of biomolecules is never found in a polymeric form?
A) amino acids
B) carbohydrates
C) nucleotides
D) lipids
E) none of the above - ANSWER- D) lipids
,Which of the following biopolymers is correctly paired with the bond that forms
between the monomers?
A) protein: ester bond
B) polysaccharide: glycosidic bond
C) DNA: phosphate bond
D) RNA: phosphate bondE)all of the above - ANSWER- B) polysaccharide:
glycosidic bond
Which of the biopolymers is correctly paired with its major function?
A) protein: information encoding
B) nucleic acids: energy storage
C) lipids: information encoding
D) polysaccharide: energy storage
E) none of the above - ANSWER- D) polysaccharide: energy storage
The similarity of one organism to another (for example a bacteria versus a human)
is most easily done by comparing which biopolymer?
A) nucleic acids
B) polysaccharides
C) proteins
D) lipids
E) all of the above - ANSWER- A) nucleic acids
In a water molecule, hydrogens are partially ; oxygens are partially .
A) negative; negative
,B) negative; positive
C) positive; positive
D) positive; negative
E) none of the above - ANSWER- D) positive; negative
At any given moment, a single water molecule participates in strong
hydrogen bond(s). The role played by the water molecule is best characterized as
.
A) two ; one H-bond donor, one H-bond acceptor
B) two ; two H-bond donor
C) two ; two H-bond acceptor
D) one; H-bond donor
E) one; H-bond acceptor - ANSWER- A) two ; one H-bond donor, one H-bond
acceptor
In a hydrogen bond between a water molecule and another biomolecule, .
A) a hydrogen ion on the water molecule forms an ionic bond with a hydride ion
on the other molecule
B) the hydrogen bond will typically form between a hydrogen atom and either a
nitrogen, sulfur, or oxygen atom
C) the partial charge on a hydrogen of the water interacts with the partial charge on
a hydrogen of the other molecule
D) a hydrogen on the water molecule forms a covalent bond to an oxygen or
nitrogen atom on the other molecule
E) the hydrogen atom is located between an oxygen atom of the water and a carbon
atom of the other molecule - ANSWER- B) the hydrogen bond will typically form
between a hydrogen atom and either a nitrogen, sulfur, or oxygen atom
, The strongest non-covalent interactions are .
A) van der Waals interactions
B) London dispersion forces
C) hydrogen bonds
D) dipole-dipole interactions
E) ionic interactions - ANSWER- E) ionic interactions
Due to the formation of hydrogen bonds, is highly soluble in water.
A) carbon dioxide
B) sodium chloride
C) methanol
D) octane
cholesterol - ANSWER- C) methanol
Which of the following molecules would be prevented from readily crossing a lipid
bilayer?
A) glucose
B) sodium ions
C) potassium ions
D) water
E) all of the above - ANSWER- E) all of the above
In an aqueous solution, if the [OH-] is 3.0×10-5M, what is the [H+]?
A) 7.0×10^-9
B) 7.0×10^-2
C) 3.3×10^-3
D) 3.3×10^-10
E) none of the above - ANSWER- D) 3.3×10^-10
Which of the following would be the strongest acid?