Biology Test

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Biology Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

What will happen if HCl is not secreted in the stomach?

A

There will be no digestion of nucleic acids.

B

There will be no digestion of carbohydrates.

C

There will be no digestion of proteins.

D

There will be no digestion of starch.
Question 2
1 / -0

Which of the following is a frequently used fluorescent pattern acquired by employing quinacrine for staining chromosomes?

A

Q-banding

B

R-banding

C

G-banding

D

T-banding
Question 3
1 / -0

Krebs cycle starts with the formation of a 6-carbon molecule by chemical reaction between

A

malic acid and acetyl coenzyme A

B

succinic acid and acetyl coenzyme A

C

fumaric acid and pyruvic acid

D

oxaloacetic acid and acetyl coenzyme A
Question 4
1 / -0

Cocaine alkaloid is obtained from

A

Erythroxylon coca

B

Thea chinensis

C

Coffea arabica

D

Theobroma cacao
Question 5
1 / -0

The translocation of organic solutes in sieve tube members is supported by

A

root pressure and transpiration pull

B

P-proteins

C

mass flow involving a carrier and ATP

D

cytoplasmic streaming
Question 6
1 / -0

In which of the following flowers is wind used as an agent of pollination?

A

Coconut

B

Vallisneria

C

Bottlebrush

D

Salvia
Question 7
1 / -0

Protein synthesis in an animal cell occurs

A

only in the ribosomes present in cytosol

B

in ribosomes present in cytoplasm as well as in mitochondria

C

in ribosomes present in the nucleolus as well as in cytoplasm

D

only in ribosomes attached to the nuclear envelope and endoplasmic reticulum
Question 8
1 / -0

What is the increase in number of chromosomes without the division of the nucleus called?

A

Aneuploidy

B

Endoploidy

C

Endoplasma

D

Free nuclear division
Question 9
1 / -0

RNA interference works by which of the following ways?

A

Using RNA polymerase inhibitors to block transcription of specific genes

B

Using short double-stranded RNA molecules that cause degradation of an mRNA molecule

C

Using antisense RNA molecules to block the translation of mRNA molecules

D

Using modified tRNA molecules to block translation
Question 10
1 / -0

Which of the following is not a characteristic of an expression vector?

A

It has two different origins of replication.

B

It is a plasmid.

C

It possesses a selection marker for host cells containing the vector.

D

It is designed for protein expression in cells.

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Biology Test - 25

Result

Biology Test - 25

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SHARING IS CARING

Question 1

There will be no digestion of nucleic acids.

There will be no digestion of carbohydrates.

There will be no digestion of proteins.

There will be no digestion of starch.

Question 2

Q-banding

R-banding

G-banding

T-banding

Question 3

malic acid and acetyl coenzyme A

succinic acid and acetyl coenzyme A

fumaric acid and pyruvic acid

oxaloacetic acid and acetyl coenzyme A

Question 4

Erythroxylon coca

Thea chinensis

Coffea arabica

Theobroma cacao

Question 5

root pressure and transpiration pull

P-proteins

mass flow involving a carrier and ATP

cytoplasmic streaming

Question 6

Coconut

Vallisneria

Bottlebrush

Salvia

Question 7

only in the ribosomes present in cytosol

in ribosomes present in cytoplasm as well as in mitochondria

in ribosomes present in the nucleolus as well as in cytoplasm

only in ribosomes attached to the nuclear envelope and endoplasmic reticulum

Question 8

Aneuploidy

Endoploidy

Endoplasma

Free nuclear division

Question 9

Using RNA polymerase inhibitors to block transcription of specific genes

Using short double-stranded RNA molecules that cause degradation of an mRNA molecule

Using antisense RNA molecules to block the translation of mRNA molecules

Using modified tRNA molecules to block translation

Question 10

It has two different origins of replication.

It is a plasmid.

It possesses a selection marker for host cells containing the vector.

It is designed for protein expression in cells.

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