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Human Physiology Unit 1 Exam Review C
Test Description: BIOL G225
Instructions: Answer all questions to get your test result.
1) pre-mRNA is processed to form 'mature' mRNA by cutting out the non-coding ____ and splicing the ____ together
A
codons, anti-codons
B
exons, introns
C
anti-codons, codons
D
introns, exons
2) translation occurs in
A
the rough endoplasmic reticulum
B
mitochondria
C
the golgi
D
the cytoplasm
3) each 3 base codon in an mRNA molecule codes for a specific
A
exon
B
lipopolysaccharide
C
intron
D
amino acid
4) _____ RNA brings the amino acids to the ribosome during translation
A
transfer
B
messenger
C
nuclear
D
ribosomal
5) which of the following is NOT true of a catalyst?
A
it is not consumed in the reaction
B
it lowers the activation energy
C
it changes the reaction equilibrium to favor the product
D
it increases the reaction rate
6) the substrate binds to the ____ of the enzyme
A
conjugate site
B
active site
C
allosteric site
D
reactive site
7) which of the following are NOT true about enzymes?
A
all of the rest are not true
B
very few enzymes require cofactors
C
most enzymes are not sensitive to changes in pH
D
as temperature increases from 25C to 37C, enzyme activity decreases
8) digestive enzymes are typically produced in a(n) ______ form, known as a ____
A
inactive, zymogen
B
inorganic, protozyme
C
active, pepsinogen
D
reactive, cataligen
9) negative feedback type regulation of a metabolic pathway by its final product is called
A
RNA interference
B
end-product inhibition
C
antangonistic inhibition
D
allosteric inhibition
10) metal ions commonly seen in vitamins are often
A
components of electolyte balance
B
enzyme cofactors
C
antagonistic effectors
D
polypeptide subunits
11) the flow of energy in living systems is
A
thermodynamics
B
entropy
C
bioenergetics
D
vitadynamics
12) a calorie is a measure of ____, specifically the amount of it required to raise 1 gram of ___ by 1 _____
A
heat, water, degree centigrade
B
biodynamic potential, cells, milivolt/minute
C
how good food tastes, flavor, umami unit
D
energy, a substance, degree kelvin
13) the capital 'C' dietary Calorie is actually _____ science lab calories
A
10
B
1/1000
C
1000
D
100
14) the energy used by cells is in the form of
A
chemiosmotic gradients
B
ionic potentials
C
chemcial bonds
D
thermal gradients
15) the universal 'energy carrier' of the cell is, a ____
A
triglyceride, lipid
B
ATP, amino acid
C
Glucose, carbohydrate
D
ATP, nucleic acid
16) in an oxidation reaction, the thing being oxidized
A
has the lower energy level
B
loses electrons
C
gains electrons
D
is simultaneously reduced
17) in living things, ______ reactions break down molecules, while ______ reactions build more complex molecules
A
endergonic, exergonic
B
catabolic, anabolic
C
chemical, biological
D
aerobic, anaerobic
18) organic reactions that require an input of energy are said to be ____, while those that release energy are _____
A
catabolic, anabolic
B
enthalpic, entropic
C
aerobic, anaerobic
D
endergonic, exergonic
19) fats are not an energy source for
A
the liver
B
the brain
C
the heart
D
resting skeletal muscle
20) glycogenolysis, the ____ of _____, is the opposite of ______
A
formation, glycogen, glyconeolysis
B
breakdown, glycogen; glycogenesis
C
addition, fatty acids to glycerol, delipification
D
bane, physiology students, an easy word like 'pancreas'
*select an answer for all questions
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