Medical Science

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Q. What is the significance of methicillin-resistant Staphylococcus aureus (MRSA)?
  • A. It is more virulent
  • B. It is resistant to multiple antibiotics
  • C. It causes more skin infections
  • D. It is easier to treat
Q. What is the significance of passaging in cell culture?
  • A. To increase the number of cells
  • B. To decrease the cell density
  • C. To change the medium
  • D. To freeze the cells
Q. What is the significance of pH in plant tissue culture media?
  • A. Affects nutrient availability
  • B. Influences color of the medium
  • C. Determines the solidifying agent
  • D. Regulates temperature
Q. What is the significance of plasmids in bacterial gene transfer?
  • A. They are essential for binary fission
  • B. They can carry antibiotic resistance genes
  • C. They are only found in pathogenic bacteria
  • D. They do not participate in gene transfer
Q. What is the significance of soil pH in microbiology?
  • A. It affects microbial diversity
  • B. It determines soil texture
  • C. It influences water retention
  • D. It has no effect on microbes
Q. What is the significance of structure-activity relationship (SAR) in drug synthesis?
  • A. It helps in predicting drug interactions
  • B. It aids in optimizing drug potency
  • C. It determines the drug's market price
  • D. It is irrelevant to drug design
Q. What is the significance of the 'gene of interest' in recombinant DNA technology?
  • A. It is the DNA sequence that is cloned
  • B. It is the vector used for cloning
  • C. It is the enzyme used for cutting DNA
  • D. It is the host organism
Q. What is the significance of the 'maximum specific growth rate' in fermentation?
  • A. Indicates the fastest growth rate
  • B. Determines substrate concentration
  • C. Measures product yield
  • D. Indicates fermentation duration
Q. What is the significance of the 'passage number' in cell culture?
  • A. It indicates the age of the cells
  • B. It refers to the number of times cells have been subcultured
  • C. It measures cell viability
  • D. It determines the growth rate of the cells
Q. What is the significance of the 'tail' structure in bacteriophages?
  • A. It helps in replication
  • B. It aids in attachment to host bacteria
  • C. It protects the genetic material
  • D. It is used for energy production
Q. What is the significance of the affinity of an antibody for its antigen?
  • A. It determines the speed of the immune response
  • B. It affects the strength of the binding interaction
  • C. It influences the type of immune cells activated
  • D. It has no clinical significance
Q. What is the significance of the annealing temperature in PCR?
  • A. It determines the speed of DNA synthesis
  • B. It affects the specificity of primer binding
  • C. It controls the amount of DNA produced
  • D. It is irrelevant to the PCR process
Q. What is the significance of the AUG codon in translation?
  • A. It signals the end of translation
  • B. It codes for the amino acid methionine and initiates translation
  • C. It is a stop codon
  • D. It is involved in mRNA splicing
Q. What is the significance of the CRISPR-Cas9 technology in plant genetics?
  • A. It allows for the cloning of plants
  • B. It enables precise gene editing
  • C. It increases plant growth rate
  • D. It enhances photosynthetic efficiency
Q. What is the significance of the equilibrium constant (K) in thermodynamics?
  • A. It indicates the speed of a reaction
  • B. It determines the direction of a reaction
  • C. It reflects the ratio of products to reactants at equilibrium
  • D. It measures the energy change of a reaction
Q. What is the significance of the lac operon in E. coli?
  • A. It regulates amino acid synthesis
  • B. It controls lactose metabolism
  • C. It is involved in DNA repair
  • D. It facilitates cell division
Q. What is the significance of the nitrogen cycle in ecosystems?
  • A. It helps in energy transfer
  • B. It recycles nutrients
  • C. It increases carbon dioxide levels
  • D. It reduces soil acidity
Q. What is the significance of the polymerase chain reaction (PCR) in recombinant DNA technology?
  • A. It cuts DNA into fragments
  • B. It amplifies specific DNA sequences
  • C. It joins DNA fragments
  • D. It sequences DNA
Q. What is the significance of the protein p53 in relation to DNA?
  • A. It promotes DNA replication
  • B. It acts as a tumor suppressor by regulating the cell cycle
  • C. It synthesizes RNA
  • D. It repairs DNA damage
Q. What is the significance of the start codon?
  • A. It signals the end of translation
  • B. It codes for a stop signal
  • C. It initiates protein synthesis
  • D. It regulates gene expression
Q. What is the significance of tumor grading?
  • A. Determines the tumor's size
  • B. Predicts the tumor's behavior and prognosis
  • C. Identifies the tumor's location
  • D. Measures the patient's response to treatment
Q. What is the significance of using a buffer during protein purification?
  • A. To increase protein solubility
  • B. To maintain pH and ionic strength
  • C. To enhance protein activity
  • D. To precipitate unwanted proteins
Q. What is the significance of viral load in HIV treatment?
  • A. Indicates the presence of antibodies
  • B. Measures the number of viral particles in the blood
  • C. Determines the immune response
  • D. Indicates the effectiveness of antibiotics
Q. What is the structure of an antibody?
  • A. Single polypeptide chain
  • B. Two heavy and two light chains
  • C. Three heavy chains
  • D. Four light chains
Q. What is the structure of DNA commonly described as?
  • A. Single helix
  • B. Double helix
  • C. Triple helix
  • D. Linear strand
Q. What is the sugar component of RNA?
  • A. Deoxyribose
  • B. Ribose
  • C. Glucose
  • D. Fructose
Q. What is the term for animals that have had their genome altered by the transfer of a gene from another species?
  • A. Cloned animals
  • B. Transgenic animals
  • C. Hybrid animals
  • D. Genetically modified organisms
Q. What is the term for bacteria that can grow in the absence of oxygen?
  • A. Aerobes
  • B. Anaerobes
  • C. Facultative anaerobes
  • D. Microaerophiles
Q. What is the term for bacteria that thrive in high salt concentrations?
  • A. Mesophiles
  • B. Halophiles
  • C. Psychrophiles
  • D. Thermophiles
Q. What is the term for the ability of antibodies to bind specifically to antigens?
  • A. Affinity
  • B. Specificity
  • C. Cross-reactivity
  • D. Neutralization
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