Online Biotechnology Test - Biotechnology Test 10

Instruction:

This is a FREE online test. Beware of scammers who ask for money to attend this test.
Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
DO NOT refresh the page.
All the best!

1.

Enzymes that recognize and cleave specific 4 to 8 base pair sequences of DNA are

DNA ligase

helicases

restriction endonucleases

DNA gyrase

[#]

2.

The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as

laser

DNA probe

gene gun

inoculating needle

[#]

3.

Cos site of the cosmids

consists of 12 bases

helps whole genome in circularization and ligation

both (a) and (b)

contains cleavage site

[#]

4.

Cellular metabolism is an example of

equilibrium metabolism

steady-state metabolism

a series of reactions occurring under standard conditions

a series of reactions that defy the second law of thermodynamics

[#]

5.

Normally CO₂ and O₂ enter a plant by

osmosis

active transport

diffusion

evaporation

[#]

6.

In a callus culture

increasing level of cytokinin to a callus induces shoot formation and increasing level of auxin promote root formation

increasing level of auxin to a callus induces shoot formation and increasing level of cytokinin promote root formation

auxins and cytokinins are not required

only auxin is required for root and shoot formation

[#]

7.

Which of the following technology is used for micro array manufacturing?

Photolithography

Ink jetting

Contact printing

All of these

[#]

8.

An ordered array is any collection of analytical elements configured in

rows and columns

randomly

circle

none of these

[#]

9.

How many chromatids does a diploid body cell contain just prior to cell division?

23

46

69

92

[#]

10.

How many chromatids are there in a duplicated chromosome?

One

Two

Three

Four

[#]

11.

Excess CO₂ suppress cell growth and productivity by

inhibiting respiration

altering intracellular pH by diffusing across cell membrane

both (a) and (b)

altering pH of the medium

[#]

12.

Which of the following is the technique used for the embryo culture?

Organ cultures on plasma clots

Organ cultures on agar

Whole embryo cultures

All of these

[#]

13.

Fusion of karyoplast with the enucleated cell is achieved in presence of

cytochalasin B

polyethylene glycol

both (a) and (b)

alcohol

[#]

14.

Transgenic goats produce a variant of human tissue type plasminogen activator protein in

blood

urine

milk

muscles

[#]

15.

The dried malt is the source of

amylase

proteinases

both (a) and (b)

cellulase

[#]

16.

Volatile acidity is

also known as total acidity

produced by acetobacter

produced by Brettanomyces

known for producing a mousy or barnyard aroma

[#]

17.

In a hot climate, grapes lose acidity because

enough tartaric acid is not made

enough malic acid is not made

of break down of malic acid

of break down of tartaric acid

[#]

18.

Chaptalization is

adding sucrose to must

adding grape juice to must

adding sugar to wine before bottling

adding grape juice to wine before bottling

[#]

19.

In sparkling wine production, the cuvee is

the wire cage that holds the cork in place

the sugar addition just before corking

the sugar/yeast addition to the base wine

the base wine

[#]

20.

Streptomycin is produced by

S. griseus

S. griseoflavus

S. aerofaciens

S. ramosus

[#]

Current Affairs

Check out the latest current affairs questions and answers.

Interview Questions

Check out the latest interview questions and answers.

Group Discussions

Check out the latest group discussions.

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers