Q. Which type of algae is known for producing harmful algal blooms?
-
A.
Green algae
-
B.
Red algae
-
C.
Blue-green algae
-
D.
Brown algae
Solution
Blue-green algae, or cyanobacteria, are known for producing harmful algal blooms.
Correct Answer:
C
— Blue-green algae
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Q. Which type of antibody is associated with blood group antigens?
-
A.
IgG
-
B.
IgM
-
C.
IgA
-
D.
IgE
Solution
IgM antibodies are associated with blood group antigens and can cause agglutination in mismatched blood transfusions.
Correct Answer:
B
— IgM
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Q. Which type of antibody is most abundant in the bloodstream?
-
A.
IgA
-
B.
IgM
-
C.
IgG
-
D.
IgE
Solution
IgG is the most abundant antibody in the bloodstream, playing a crucial role in the body's defense against infections.
Correct Answer:
C
— IgG
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Q. Which type of antibody is produced first during an initial immune response?
-
A.
IgG
-
B.
IgA
-
C.
IgM
-
D.
IgE
Solution
IgM is the first antibody produced in response to an infection, providing early defense before IgG levels rise.
Correct Answer:
C
— IgM
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Q. Which type of antigen is recognized by T cells?
-
A.
Exogenous antigens
-
B.
Endogenous antigens
-
C.
Both exogenous and endogenous antigens
-
D.
None of the above
Solution
T cells can recognize both exogenous and endogenous antigens.
Correct Answer:
C
— Both exogenous and endogenous antigens
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Q. Which type of bacteria is typically comma-shaped?
-
A.
Cocci
-
B.
Bacilli
-
C.
Vibrio
-
D.
Spirilla
Solution
Vibrio bacteria are typically comma-shaped.
Correct Answer:
C
— Vibrio
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Q. Which type of bacteriophage is known for integrating its DNA into the host genome?
-
A.
Lytic phage
-
B.
Temperate phage
-
C.
Virulent phage
-
D.
Bacteriocin
Solution
Temperate phages can integrate their DNA into the host genome, entering a lysogenic cycle.
Correct Answer:
B
— Temperate phage
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Q. Which type of beer is typically lower in calories?
-
A.
Lager
-
B.
Stout
-
C.
Pale Ale
-
D.
Light beer
Solution
Light beer is typically lower in calories compared to regular beers.
Correct Answer:
D
— Light beer
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Q. Which type of beer typically has a higher alcohol content?
-
A.
Lager
-
B.
Pale Ale
-
C.
Stout
-
D.
Barleywine
Solution
Barleywine typically has a higher alcohol content compared to other types of beer.
Correct Answer:
D
— Barleywine
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Q. Which type of biosensor is primarily used for detecting pathogens?
-
A.
Optical biosensor
-
B.
Electrochemical biosensor
-
C.
Immunosensor
-
D.
Thermal biosensor
Solution
Immunosensors are specifically designed to detect pathogens by utilizing antibodies that bind to the target microorganisms.
Correct Answer:
C
— Immunosensor
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Q. Which type of bond is primarily responsible for maintaining the tertiary structure of proteins?
-
A.
Hydrogen bonds
-
B.
Ionic bonds
-
C.
Disulfide bridges
-
D.
All of the above
Solution
Tertiary structure is stabilized by hydrogen bonds, ionic bonds, and disulfide bridges.
Correct Answer:
D
— All of the above
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Q. Which type of bond is primarily responsible for the interaction between proteins and nucleic acids?
-
A.
Ionic bonds
-
B.
Hydrogen bonds
-
C.
Covalent bonds
-
D.
Van der Waals forces
Solution
Hydrogen bonds are crucial for the specific interactions between proteins and nucleic acids, allowing for the recognition of specific sequences.
Correct Answer:
B
— Hydrogen bonds
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Q. Which type of bond is primarily responsible for the secondary structure of proteins?
-
A.
Ionic bonds
-
B.
Hydrogen bonds
-
C.
Disulfide bonds
-
D.
Peptide bonds
Solution
Hydrogen bonds are primarily responsible for the formation of the secondary structure of proteins, such as alpha helices and beta sheets.
Correct Answer:
B
— Hydrogen bonds
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Q. Which type of cell culture involves the growth of cells from a single cell type?
-
A.
Primary culture
-
B.
Secondary culture
-
C.
Clonal culture
-
D.
Mixed culture
Solution
Clonal culture refers to the growth of cells derived from a single cell, ensuring uniformity in the cell population.
Correct Answer:
C
— Clonal culture
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Q. Which type of cell culture is best for studying the interactions between different cell types?
-
A.
Primary culture
-
B.
Clonal culture
-
C.
Mixed culture
-
D.
Suspension culture
Solution
Mixed culture allows for the study of interactions between different cell types, providing insights into cellular communication.
Correct Answer:
C
— Mixed culture
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Q. Which type of cell culture is typically used for the production of monoclonal antibodies?
-
A.
Primary culture
-
B.
Suspension culture
-
C.
Adherent culture
-
D.
3D culture
Solution
Suspension culture is commonly used for the production of monoclonal antibodies as it allows for high-density cell growth.
Correct Answer:
B
— Suspension culture
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Q. Which type of chromatography uses a solid stationary phase and a liquid mobile phase?
-
A.
Gas chromatography
-
B.
Liquid chromatography
-
C.
Thin-layer chromatography
-
D.
High-performance liquid chromatography
Solution
Liquid chromatography uses a solid stationary phase and a liquid mobile phase for separation.
Correct Answer:
B
— Liquid chromatography
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Q. Which type of cloning vector is derived from bacteriophages?
-
A.
Cosmids
-
B.
Bacterial artificial chromosomes
-
C.
Yeast artificial chromosomes
-
D.
Plasmids
Solution
Cosmids are a type of cloning vector that is derived from bacteriophages.
Correct Answer:
A
— Cosmids
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Q. Which type of connective tissue is characterized by a gel-like matrix and is found at the ends of long bones?
-
A.
Fibrocartilage
-
B.
Elastic cartilage
-
C.
Hyaline cartilage
-
D.
Loose connective tissue
Solution
Hyaline cartilage has a gel-like matrix and provides smooth surfaces for joint movement at the ends of long bones.
Correct Answer:
C
— Hyaline cartilage
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Q. Which type of connective tissue is primarily responsible for energy storage?
-
A.
Cartilage
-
B.
Adipose tissue
-
C.
Bone
-
D.
Blood
Solution
Adipose tissue is specialized for energy storage, as it contains adipocytes that store fat.
Correct Answer:
B
— Adipose tissue
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Q. Which type of detector is commonly used in HPLC?
-
A.
Mass spectrometer
-
B.
UV-Vis spectrophotometer
-
C.
Fluorescence detector
-
D.
All of the above
Solution
All of the above detectors can be used in HPLC, with UV-Vis spectrophotometers being the most common.
Correct Answer:
D
— All of the above
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Q. Which type of DNA repair mechanism is used to fix thymine dimers caused by UV light?
-
A.
Base excision repair
-
B.
Nucleotide excision repair
-
C.
Mismatch repair
-
D.
Homologous recombination
Solution
Nucleotide excision repair is the mechanism that removes thymine dimers caused by UV light.
Correct Answer:
B
— Nucleotide excision repair
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Q. Which type of enzyme regulation involves the end product of a metabolic pathway inhibiting an earlier step?
-
A.
Allosteric regulation
-
B.
Feedback inhibition
-
C.
Covalent modification
-
D.
Proteolytic activation
Solution
Feedback inhibition is a regulatory mechanism where the end product inhibits an earlier step in the pathway.
Correct Answer:
B
— Feedback inhibition
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Q. Which type of epithelium is best suited for areas subject to abrasion, such as the skin?
-
A.
Simple cuboidal epithelium
-
B.
Stratified squamous epithelium
-
C.
Simple columnar epithelium
-
D.
Transitional epithelium
Solution
Stratified squamous epithelium is designed to protect underlying tissues in areas subject to abrasion, such as the skin.
Correct Answer:
B
— Stratified squamous epithelium
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Q. Which type of fermentation occurs in muscle cells during intense exercise?
-
A.
Alcoholic fermentation
-
B.
Lactic acid fermentation
-
C.
Acetic acid fermentation
-
D.
Butyric acid fermentation
Solution
Lactic acid fermentation occurs in muscle cells during intense exercise when oxygen levels are low.
Correct Answer:
B
— Lactic acid fermentation
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Q. Which type of fermentation reactor allows for continuous input and output?
-
A.
Batch reactor
-
B.
Fed-batch reactor
-
C.
Continuous stirred-tank reactor
-
D.
Plug flow reactor
Solution
Continuous stirred-tank reactors (CSTR) allow for continuous input and output, maintaining a steady state of operation.
Correct Answer:
C
— Continuous stirred-tank reactor
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Q. Which type of filtration uses a membrane to separate contaminants from water?
-
A.
Sand filtration
-
B.
Activated carbon filtration
-
C.
Microfiltration
-
D.
Chlorination
Solution
Microfiltration uses a membrane to separate contaminants from water.
Correct Answer:
C
— Microfiltration
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Q. Which type of fish is known to have the highest mercury levels?
-
A.
Salmon
-
B.
Tuna
-
C.
Trout
-
D.
Sardines
Solution
Tuna, especially larger species like bluefin, tend to accumulate higher levels of mercury.
Correct Answer:
B
— Tuna
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Q. Which type of fish is often recommended for pregnant women due to its low mercury content?
-
A.
Swordfish
-
B.
Salmon
-
C.
Shark
-
D.
Mackerel
Solution
Salmon is often recommended for pregnant women as it is low in mercury and high in omega-3 fatty acids.
Correct Answer:
B
— Salmon
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Q. Which type of gel is commonly used for DNA electrophoresis?
-
A.
Agarose gel
-
B.
Polyacrylamide gel
-
C.
Cellulose acetate
-
D.
Starch gel
Solution
Agarose gel is commonly used for DNA electrophoresis due to its suitable pore size for separating DNA fragments.
Correct Answer:
A
— Agarose gel
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