MCQ Bank
Gram staining is a staining technique used to classify bacteria based on differences in their which of the following feature?
- A) Size of the cell
- B) Shape of nucleoid
- C) Cell Wall
- D) Number of plasmid
Which of the following is the secondary stain used in Gram staining?
- A) Crystal violet
- B) Iodine
- C) Gimsa
- D) Safranin
Which of the following is responsible for adjusting the focus of the specimen in a compound microscope?
- A) Diaphragm
- B) Coarse knob
- C) Nosepiece
- D) Stage
What is the purpose of the condenser in a compound microscope?
- A) Produce light to illuminate the specimen
- B) Adjust the focus of the image
- C) Hold the specimen in place
- D) Control the intensity of light
Which of the following represents the cellular component that is responsible for lipid synthesis in an animal cell?
- A) Smooth endoplasmic reticulum
- B) Ribosome
- C) Rough endoplasmic reticulum
- D) Golgi apparatus
Which of the following option describe all categories of organisms that belong to eukaryotic domain?
- A) Archaea, protozoa, plants and animals
- B) Protozoa, plants, and animals
- C) Fungi, protozoa, plants, and animals
- D) Fungi, plants, and animals
Which of the following structures is responsible for the movement of a prokaryotic cell?
- A) Flagella
- B) Lysosome
- C) Nucleus
- D) Cytoplasm
What is the function of ribosomes in a prokaryotic cell?
- A) Waste elimination
- B) Energy production
- C) Cell movement
- D) Protein synthesis
In addition to nucleus, which of the following cellular organelle/s in an animal cell contains DNA?
- A) Mitochondria only
- B) Chloroplast and mitochondria
- C) Ribosome only
- D) Ribosome and mitochondra
Which cellular components is responsible for maintaining the shape and structure of animal cells?
- A) Golgi apparatus
- B) Endoplasmic reticulum
- C) Vacuole
- D) Cytoskeleton
Which of the following is function of the endoplasmic reticulum in animal cells?
- A) Storing genetic material
- B) Recycling cellular components
- C) Energy generation
- D) Modifying proteins
Which of the following stain is used to observe the capsule around bacteria?
- A) Fuelgen stain
- B) Methlene blue
- C) Indian ink
- D) Malachite green
What is the function of the stage in a compound microscope?
- A) Magnify the image of the specimen
- B) Adjust the focus of the specimen
- C) Hold the specimen in place
- D) Provide light to illuminate the specimen
In eukaryotic cells ribosomes are present freely in cytoplasm as well as bound to which of the following cellular component?
- A) Rough endoplasmic reticulum
- B) Nucleus
- C) Peroxisome
- D) Smooth endoplasmic reticulum
Which of the following stain is used to observe the endospore?
- A) Indian Ink
- B) Malachite green
- C) Methylene blue
- D) Giemsa stain
What is the function of the cytoskeleton in eukaryotic cells?
- A) Controlling cell division
- B) Sending signals from one part of the cell to another
- C) Breaking down waste materials
- D) Providing physical support to organelles
Gram staining is an important technique used in the identification and classification of which of the following group of organism?
- A) Bacteria
- B) Microorganisms
- C) Prokaryotes
- D) Fungi
Which component of a compound microscope is closest to the specimen being observed?
- A) Coarse adjustment knob
- B) Illuminator
- C) Eyepiece
- D) Objective lens
Which of the following truely represents function of nucleolus in cell?
- A) Maintaining shape of nucleus
- B) Detoxifying harmful substances
- C) Maintaining nuclear membrane integrity
- D) Synthesizing ribosomal RNA
What color will Gram-positive bacteria appear after the completion of the Gram staining process?
- A) Pink
- B) Blue
- C) Purple
- D) Yellow