Online Biotechnology Test - Biotechnology Test 8

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Total number of questions: 20.
Time allotted: 30 minutes.
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The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that

the mitochondrial matrix is hypotonic to the cellular cytoplasm

the mitochondrial matrix is hypertonic to the cellular cytoplasm

mitochondria were derived from a symbiotic bacterium

mitochondria are surrounded by a semi permeable membrane

[#]

If complex III were incorporated into an artificial lipid vesicle in order to demonstrate it's proton translocating ability in isolation, which of the following would be an appropriate electron donor?

Cytochrome c red

Cytochrome c peroxidase

Ubiquinol (UQH2)

Cytochrome c oxidase

[#]

In the Calvin cycle of C3 plants, which molecule is the acceptor of CO₂?

Erythrose-4-phosphate

Ribulose-l,5-diphosphate

Ribose-5-phosphate

Alpha-ketoglutarate

[#]

Which of the following transposable elements are not found in plants?

Tam3

All are found

[#]

Cellular totipotency is the property of

plants

animals

bacteria

all of these

[#]

Direct DNA uptake by protoplasts can be stimulated by

polyethylene glycol (PEG)

decanal

luciferin

all of these

[#]

Plant transformation vectors based on Agrobacterium can generally be divided into

two vectors

four vectors

six vectors

eight vectors

[#]

Which tropical fruit crop has been successfully engineered to be protected against a lethal virus?

Passion fruit

Papaya

Mango

Lychee

[#]

The hybrid embryo can be rescued from damage/collapse by growing it

at low temperature

at low pH

at low water activity

in artificial medium

[#]

10.

Which of the following is selectively effective against dicot weeds?

Cycloheximide

Anisomycin

Herbicidin A and B

Bialaphos

[#]

11.

In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters) will show a phenotypic ratio of

1:1:1:1

1:2:2:1

9:3:3:1

3:1:1:3

[#]

12.

The disorder in which of the following may cause "Ehlers-Danlos Syndrome"?

Dlashin protein

Collagen protein

Fibrin protein

Globulin protein

[#]

13.

How does CO₂ help in the cell metabolism during cell culture?

It participates in the de novo synthesis of purines and pyrimidines

Helps in the cells respiration

For monitoring pH of the culture

All of the above

[#]

14.

α-aminoadipate inhibits the growth if one of the following marker is present in the yeast. That is

His 3

Lys 2

Ura 3

Trp 1

[#]

15.

Which of the following is/are commonly used promoter of S. cerevisiae?

Galactokinase (GAL 1)

Alcohol dehydrogenase II (ADH 2)

Phosphoglycerate kinase (PGK)

All of the above

[#]

16.

Which part of a cell carries the information that is passed from one generation to the next?

Cell

Nucleus

Cytoplasm

Chloroplast

[#]

17.

Embryo transfer (ET) refers to the technique by which fertilized ova are collected from the reproductive tract of a genetically

superior female and transferred to the inferior

inferior female and transferred to the superior

balanced female

none of the above

[#]

18.

The number of follicles at any particular stage is governed by

the rate of entry of dormant follicles

the rate of growth of follicles

the rate of loss of follicles

all of the above

[#]

19.

Genetic change can occur only in

one way

two ways

three ways

four ways

[#]

20.

How long does it take to complete fermentation process in case of red wine?

1-3 days

3-5 days

5-7 days

7-11 days

[#]

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Online Biotechnology Test - Biotechnology Test 8

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