Select which are the primary components of LB broth?

• A) Maltose, tryptone, sodium chloride
• B) Sucrose, agar, beef extract
• C) Glucose, yeast extract, peptone
• D) Fructose, casein, potassium phosphate

Among the following methods, which technique is best suited for sterilizing oils, powders, and items intolerant to high temperatures?

• A) Ethylene oxide sterilization
• B) Autoclaving
• C) Dry heat sterilization
• D) Filtration

Name the part of microscope you have used to see magnified image during your microscope practical?

• A) Stage controls
• B) Condenser
• C) Objective lens
• D) Eyepiece lens

An instrument that is used as sterilizer to sterilize lab equipment at 121 Celsius using steam under pressure?

• A) Hot Air Oven
• B) Water Bath
• C) Autoclave
• D) Incubator

Which of the following is not a component of Luria broth (LB) nutrient-rich media?

• A) NaCl
• B) Tryptone
• C) Yeast Extract
• D) Agar

From the following given list, choose the correct order in which light passes through compound microscope.

• A) Mirror ➞ slide ➞ objective lens ➞ eyepiece
• B) Slide ➞ eyepiece ➞ objective lens ➞ mirror
• C) Mirror ➞ eyepiece ➞ objective lens ➞ slide
• D) Mirror ➞ objective lens ➞ eyepiece ➞ slide

What is the purpose of Agar in the solid media?

• A) To provide colour
• B) To enhace bacterial motility
• C) To provide nutrients
• D) Act as a solidifying agent

If the eyepiece of a microscope magnifies the image by 10, and the objective lens magnifies by 40, then what is the total magnification of the microscope?

• A) 40
• B) 400
• C) 10
• D) 100

Which sterilization method is more effective against bacterial endospores?

• A) Filtration
• B) Dry heat sterilization
• C) UV irradiation
• D) Autoclaving

What is bacterial innoculum?

• A) A substance that kills bacteria
• B) A method to detect bacterial infections
• C) Bacterial growth used to start a new culture
• D) The process of sterilizing bacterial cultures

Which factor is most critical in selecting a suitable liquid medium for bacterial growth?

• A) Nutrient components
• B) Its color
• C) Sterilization method
• D) Its texture

Select parts of a microscope that are involved to give a magnified view of a cell?

• A) Objective lens and eye piece
• B) Objective lens and condenser
• C) Objective lens and Nose piece
• D) Eyepiece and focus knob

Marburg Virus is life threatening agent. Choose a biosafety level that is more suitable to deal it with them?

• A) BSL-3
• B) BSL-4
• C) BSL-2
• D) BSL-1

Which of the following type of radiations are categorized as ionizing radiations?

• A) Radiofrequency (RF) radiation
• B) Gamma radiations
• C) Microwave
• D) Ultraviolet

Indicate instrument that is used to separate components of a microbial sample based on density?

• A) Hot Air Oven
• B) Autoclave
• C) Centrifuge
• D) Water Bath

Inoculating loop is used to transfer bacterial colony and sterilized repeatedly. Select a method which was used by you during lab for sterilization of Inoculating loop.

• A) Incineration
• B) Steam
• C) Flaming
• D) Hot air oven

Media with custard like consistency is named as?

• A) MacCkonkey agar
• B) Broth
• C) Semi-solid media
• D) Solid media

Test tube containing solidified culture medium at a slope for preparing cultures and preservation of pure cultures in the lab.Identify the type of prepared test tube is called as

• A) Agar Stab
• B) Agar Plate
• C) Agar Plate
• D) Agar Slant

Surgical scissors, scalpels and needles are preferentially sterilized using which of the following sterilization technique?

• A) Boiling
• B) Incineration
• C) Radiation
• D) Pasteurization

Select a sterilization technique that employs high-energy rays to eradicate microorganisms?

• A) Autoclaving
• B) Ionizing radiation
• C) Pasteurization
• D) Filtration