BIOL 1P91 Final UPDATED Exam Questions and CORRECT Answers
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Course
BIOL 1P91
Institution
BIOL 1P91
BIOL 1P91 Final UPDATED Exam
Questions and CORRECT Answers
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 foll...
BIOL 1P91 Final UPDATED Exam
Questions and CORRECT Answers
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)
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