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Culture Media

Quiz on Culture Media 1

You will get 5 points for each right answer.

1 / 10

1. Temperature required for pasteurization is

A. Above 150oC

B. 110oC

C. Below 100oC

2 / 10

2. Elek’s gel diffusion test is used for the detection of

A. Tetani toxin

B. Cholera toxin

C. Diophtheria toxin

3 / 10

3. A culture medium the exact composition of which is not known was called as

A. Simple

B. Complex

C. Defined

4 / 10

4. Thermal death time is

A. Time required to kill all cells at a given temperature

B. Temperature that kills all cells in a given time

C. Time and temperature needed to kill all cells

5 / 10

5. The technique used to avoid all microorganisms is accomplished by

A. Sterlization

B. Disinfection

C. Surgical sterilization

6 / 10

6. The method in which the cells are frozen dehydrated is called

A. Lypophilization

B. Pasteurization

C. Dessication

7 / 10

7. Peptone water medium is an example for

A. Synthetic medium

B. Semisynthetic medium

C. Differential medium

8 / 10

8. Which of the following is a neutral stain?

A. Picric acid

B. Gmiemsa

C. Neutral red

D. Malachite green

9 / 10

9. Lysol is a

A. Sterilent

B. Antiseptic

C. Disinfectant

D. Antifungal agent

10 / 10

A. EMB agar

B. EMR-Vp medium

C. Endo agar

D. Lactose broth

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Right Answer, you got 5 points

Your score is

The average score is 43%

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Culture Media

Quiz on Culture Media 2

1 / 10

1. Algae are rich in

A. Carbohydrates

B. Proteins

C. All of these

2 / 10

2. The bacterial culture prepared by pure culture method is

A. Suspension

B. Inoculum

C. Dilution

3 / 10

3. Temperature in pasteurization is

A. 68.2oC

B. 35.7o C

C. 62.8o C

4 / 10

4. Autoclaving is carried at

A. Atmospheric pressure

B. 120oC

C. Dry heat

5 / 10

5. Treponema pallidum can be best indentified using

A. Bright field microscope

B. Fluorescence microscope

C. Dark field microscope

6 / 10

6. Separation of a single bacterial colony is called

A. Isolation

B. Separation

C. Pure culturing

7 / 10

7. Which of the following is ionizing radiation?

A. U.V. rays

B. IR

C. γ-rays

8 / 10

8. Which of the following induces dimerisation of thymine?

A. X-rays

B. U.V. rays

C. None of these

9 / 10

9. When food material are preserved at a temperature just above freezing temperature, the process is called.

A. Chilling

B. Freezing

C. Pasteurisation

10 / 10

10. Which of the following method of sterilization has no effect on spores?

A. Drying

B. Autoclave

C. None of these

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Culture Media

Quiz on Microorganisms

1 / 6

1. Which type of microscope is especially useful for viewing thick structures such as biofilms?

A. A Scanning Electron Microscopes

B. A Confocal Scanning Laser Microscope

C. A Transmission Electron Microscope

2 / 6

2. Which would be the best choice for viewing internal structures of a living protist such as a Paramecium?

A. A Brightfield Microscope Without A Stain

B. A Brightfield Microscope With A Stain

C. A Darkfield Microscope

3 / 6

3. Who is the probable inventor of the compound microscope?

A. Zaccharias Janssen

B. Antonie Van Leeuwenhoek

C. Robert Hooke

4 / 6

4. Who was the first to describe “cells” in dead cork tissue?

A. Who was the first to describe “cells” in dead cork tissue?

B. Antonie Van Leeuwenhoek

C. Zaccharias Janssen

5 / 6

5. You place a specimen under the microscope and notice that parts of the specimen begin to emit light immediately. These materials can be described as _____________.

A. Fluorescent

B. Transparent

C. Phosphorescent

6 / 6

6. Which of the following has the highest energy?

A. Light With A Long Wavelength

B. Light With An Intermediate Wavelength

C. Light With A Short Wavelength

Your score is

The average score is 29%

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