Q. What is the term for the breakdown of body tissues after death?
-
A.
Autolysis
-
B.
Putrefaction
-
C.
Decomposition
-
D.
Necrosis
Solution
Putrefaction is the process of decay or rotting in a body, primarily due to bacterial action.
Correct Answer:
B
— Putrefaction
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Q. What is the term for the flow of fluid in layers, with no disruption between them?
-
A.
Turbulent flow
-
B.
Laminar flow
-
C.
Transitional flow
-
D.
Creeping flow
Solution
Laminar flow is characterized by fluid moving in parallel layers with minimal disruption between them.
Correct Answer:
B
— Laminar flow
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Q. What is the term for the fraction of an administered dose of unchanged drug that reaches the systemic circulation?
-
A.
Bioavailability
-
B.
Volume of distribution
-
C.
Clearance
-
D.
Half-life
Solution
Bioavailability refers to the fraction of an administered dose of unchanged drug that reaches the systemic circulation.
Correct Answer:
A
— Bioavailability
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Q. What is the term for the maximum rate of an enzyme-catalyzed reaction?
-
A.
Vmax
-
B.
Km
-
C.
Turnover number
-
D.
Michaelis constant
Solution
Vmax is the maximum rate of an enzyme-catalyzed reaction when the enzyme is saturated with substrate.
Correct Answer:
A
— Vmax
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Q. What is the term for the process by which bacteriophages transfer genetic material between bacteria?
-
A.
Transduction
-
B.
Transformation
-
C.
Conjugation
-
D.
Replication
Solution
Transduction is the process by which bacteriophages transfer genetic material between bacteria.
Correct Answer:
A
— Transduction
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Q. What is the term for the process by which the three germ layers are formed?
-
A.
Gastrulation
-
B.
Neurulation
-
C.
Organogenesis
-
D.
Fertilization
Solution
Gastrulation is the process that forms the three germ layers: ectoderm, mesoderm, and endoderm.
Correct Answer:
A
— Gastrulation
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Q. What is the term for the process of creating genetically modified animals?
-
A.
Cloning
-
B.
Transgenesis
-
C.
Selective breeding
-
D.
Hybridization
Solution
Transgenesis is the process of introducing foreign DNA into an animal's genome to create genetically modified organisms.
Correct Answer:
B
— Transgenesis
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Q. What is the term for the process of growing plant cells in a controlled environment?
-
A.
Hydroponics
-
B.
Tissue culture
-
C.
Aeroponics
-
D.
Xenobiotics
Solution
Tissue culture is the process of growing plant cells in a controlled environment.
Correct Answer:
B
— Tissue culture
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Q. What is the term for the region of an antibody that binds to an antigen?
-
A.
Constant region
-
B.
Variable region
-
C.
Fab region
-
D.
Fc region
Solution
The variable region of an antibody is responsible for binding to specific antigens.
Correct Answer:
B
— Variable region
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Q. What is the term for the region on the enzyme where the substrate binds?
-
A.
Active site
-
B.
Allosteric site
-
C.
Binding site
-
D.
Catalytic site
Solution
The active site is the region on the enzyme where the substrate binds and the reaction occurs.
Correct Answer:
A
— Active site
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Q. What is the term for the specific region on an antigen that is recognized by an antibody?
-
A.
Epitope
-
B.
Paratope
-
C.
Antibody site
-
D.
Antigenic determinant
Solution
The specific region on an antigen that is recognized by an antibody is called an epitope.
Correct Answer:
A
— Epitope
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Q. What is the term for the specific region on an enzyme where the substrate binds?
-
A.
Active site
-
B.
Allosteric site
-
C.
Binding pocket
-
D.
Catalytic center
Solution
The active site is the specific region on an enzyme where the substrate binds and the reaction occurs.
Correct Answer:
A
— Active site
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Q. What is the term for the symbiotic relationship between algae and fungi?
-
A.
Mycorrhiza
-
B.
Lichen
-
C.
Endophyte
-
D.
Biofilm
Solution
Lichen is the term for the symbiotic relationship between algae and fungi.
Correct Answer:
B
— Lichen
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Q. What is the term for the symbiotic relationship between corals and certain microbes?
-
A.
Mutualism
-
B.
Commensalism
-
C.
Parasitism
-
D.
Predation
Solution
The relationship between corals and zooxanthellae (a type of algae) is a mutualistic symbiosis, where both organisms benefit.
Correct Answer:
A
— Mutualism
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Q. What is the term for the transfer of genetic material from one bacterium to another via a pilus?
-
A.
Transformation
-
B.
Transduction
-
C.
Conjugation
-
D.
Replication
Solution
Conjugation is the transfer of genetic material through a pilus between bacteria.
Correct Answer:
C
— Conjugation
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Q. What is the tertiary structure of a protein?
-
A.
The overall 3D shape of a single polypeptide chain
-
B.
The sequence of amino acids
-
C.
The arrangement of multiple polypeptide chains
-
D.
The interaction of the protein with other molecules
Solution
The tertiary structure of a protein refers to the overall three-dimensional shape formed by the folding of a single polypeptide chain.
Correct Answer:
A
— The overall 3D shape of a single polypeptide chain
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Q. What is the therapeutic use of statins?
-
A.
Hypertension
-
B.
Hyperlipidemia
-
C.
Diabetes
-
D.
Asthma
Solution
Statins are primarily used to lower cholesterol levels in patients with hyperlipidemia.
Correct Answer:
B
— Hyperlipidemia
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Q. What is the threshold potential for initiating an action potential in most neurons?
-
A.
-70 mV
-
B.
-55 mV
-
C.
0 mV
-
D.
+30 mV
Solution
The threshold potential for initiating an action potential is typically around -55 mV.
Correct Answer:
B
— -55 mV
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Q. What is the typical alcohol content of fermented beverages produced through ethanol fermentation?
-
A.
1-5%
-
B.
5-15%
-
C.
15-25%
-
D.
25-40%
Solution
The typical alcohol content of fermented beverages produced through ethanol fermentation ranges from 5-15%.
Correct Answer:
B
— 5-15%
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Q. What is the typical appearance of a yeast colony on agar?
-
A.
Fluffy and aerial
-
B.
Smooth and creamy
-
C.
Dry and powdery
-
D.
Woolly and dense
Solution
Yeast colonies typically appear smooth and creamy on agar plates.
Correct Answer:
B
— Smooth and creamy
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Q. What is the typical appearance of Pseudomonas aeruginosa on culture media?
-
A.
Yellow colonies
-
B.
Green colonies with a fruity odor
-
C.
White colonies
-
D.
Red colonies
Solution
Pseudomonas aeruginosa typically appears as green colonies on culture media and has a characteristic fruity odor.
Correct Answer:
B
— Green colonies with a fruity odor
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Q. What is the typical charge of DNA molecules during gel electrophoresis?
-
A.
Positive
-
B.
Negative
-
C.
Neutral
-
D.
Variable
Solution
DNA molecules have a negative charge due to their phosphate backbone, causing them to migrate towards the positive electrode.
Correct Answer:
B
— Negative
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Q. What is the typical concentration of acetic acid in household vinegar?
-
A.
5-20%
-
B.
1-3%
-
C.
30-50%
-
D.
50-70%
Solution
Household vinegar typically contains 5-20% acetic acid.
Correct Answer:
A
— 5-20%
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Q. What is the typical length range of peptides?
-
A.
2 to 10 amino acids
-
B.
10 to 50 amino acids
-
C.
50 to 100 amino acids
-
D.
Over 100 amino acids
Solution
Peptides typically consist of 2 to 50 amino acids, while proteins are generally larger.
Correct Answer:
B
— 10 to 50 amino acids
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Q. What is the typical mobile phase used in gas chromatography?
-
A.
Liquid solvent
-
B.
Gas
-
C.
Solid adsorbent
-
D.
Aqueous solution
Solution
The mobile phase in gas chromatography is typically a gas, often helium or nitrogen.
Correct Answer:
B
— Gas
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Q. What is the typical number of cycles in a standard PCR protocol?
-
A.
5-10 cycles
-
B.
15-30 cycles
-
C.
25-40 cycles
-
D.
50-100 cycles
Solution
A standard PCR protocol typically involves 25-40 cycles to achieve sufficient amplification.
Correct Answer:
C
— 25-40 cycles
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Q. What is the typical oxygen requirement for Actinomyces species?
-
A.
Obligate aerobes
-
B.
Facultative anaerobes
-
C.
Obligate anaerobes
-
D.
Microaerophilic
Solution
Actinomyces species are facultative anaerobes, meaning they can grow in both the presence and absence of oxygen.
Correct Answer:
B
— Facultative anaerobes
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Q. What is the typical pH range for animal cell culture media?
-
A.
4.0 - 5.0
-
B.
6.5 - 7.5
-
C.
8.0 - 9.0
-
D.
10.0 - 11.0
Solution
The typical pH range for animal cell culture media is 6.5 to 7.5, which is optimal for cell growth and function.
Correct Answer:
B
— 6.5 - 7.5
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Q. What is the typical pressure range for HPLC systems?
-
A.
0-10 psi
-
B.
10-100 psi
-
C.
100-5000 psi
-
D.
5000-10000 psi
Solution
The typical pressure range for HPLC systems is 100-5000 psi, which is necessary for efficient separation.
Correct Answer:
C
— 100-5000 psi
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Q. What is the typical range of chemical shifts for protons in organic compounds?
-
A.
0-5 ppm
-
B.
0-10 ppm
-
C.
0-15 ppm
-
D.
0-20 ppm
Solution
Protons in organic compounds typically exhibit chemical shifts in the range of 0-12 ppm.
Correct Answer:
B
— 0-10 ppm
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