BIOL 1P91 Final Exam All Questions
and Verified Answers 2023/2024 Latest
Version (Brock University)
What are the 3 general components that make up an atom? Correct Answer
Protons
Neutrons
Electrons
The sum of the atomic number and the number of neutrons is: Correct Answer A
(the atomic numb...
BIOL 1P91 Final Exam All Questions
and Verified Answers 2023/2024 Latest
Version (Brock University)
What are the 3 general components that make up an atom? Correct Answer
Protons
Neutrons
Electrons
The sum of the atomic number and the number of neutrons is: Correct Answer A
(the atomic number)
Mass Number
Which of the following is/ are a polar bond?
A) O-H bond in water *
B) C-O in CO2
C) N-N in N2
D) all of the above
E) two of the above Correct Answer A) O-H bond in water
A substance dissolvable in oil is said to be: Correct Answer Hydrophobic
- since oil is hydrophobic, it will dissolve hydrophobic substances
- like dissolves like
Amphipathic molecules have two different properties:
When dissolved in water, they form: Correct Answer Amphipathic molecules have
hydrophobic and hydrophilic properties and in water they form micelles.
A pH of 2 is ________ than a pH of 6 Correct Answer 10,000 times more acidic
-more acidic the lower you go
Which of the following macromolecules is the most hydrophobic?
A) Lipids
B) Proteins
C) Carbohydrates
D) Nucleic Acids
E) All of the above
F) 2 of the above Correct Answer Lipids are the most hydrophobic
- water hating
What is the following reaction?
R1-OH + H-R2 --> R1-R2 + H20
A) Hydrolysis
B) Condensation
C) Dehydration
D) Decomposition
E) All of the above
, F) 2 of the above Correct Answer Two of the above:
Hydrolysis and Condensation
- they both lose a water to combine molecules
What are the 4 molecules in all living organisms Correct Answer Hydrogen
Oxygen
Nitrogen
Carbon
Which macromolecule contains a sulphydryl functional group?
A) Fatty acids
B) Carbohydrates
C) Steroids
D) Amino acid Correct Answer Amino Acids
- this is a -SH group that is specifically found in cysteine
What kind of bonds connect sugar monomers Correct Answer Glycosidic bonds
How do plants store energy? Correct Answer Starch
- starch is for plants
- glycogen is for animals
Which protein structure involves the formation of a 3D shape due to R-group
interactions? Correct Answer Tertiary
What are the three types of movement across a membrane? Correct Answer -
Diffusion (passive transport down the concentration gradient)
- Facilitated Transport ( movement down a concentration gradient using a protein)
-Active Transport (movement against the concentration gradient without the input of
energy and the aid of a protein)
The protein that moves lipids from the outer leaflet to the inner leaflet of the
membrane Correct Answer Flippase
- Scramblase (Random)
- Flippase (Out to in)
-Floppase (In to out)
What type of proteins span the liquid membrane? Correct Answer
Transmembrane Proteins
If a red blood cell is thrown into a hypertonic solution what would happen? Correct
Answer The cell will shrivel
What are the three types of transport proteins? Correct Answer - Uniporter (single
molecule)
- Symporter/ Coporter (2 or more molecules in the same direction)
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