Q:

Change in focal length of eye lens is caused by

A) ciliary muscles	B) iris
C) pupil	D) retina

Answer & Explanation Answer: A) ciliary muscles

Explanation:

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Q:

Missing letters puzzle

Answer

Answer: 4

Explanation: Splitting the diagram in half horizontally and vertically, each quarter contains the alphabet written in sequence, with the relative position of this sequence rotating 1/4 turn anti-clockwise as you move clockwise around the quarters.

Workspace

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Q:

During the process of protein synthesis, each trna carries one

A) amino acid	B) nucleotide
C) fatty acid	D) nucleic acis

Answer & Explanation Answer: A) amino acid

Explanation:

During protein synthesis process, each tRNA carries one aminoacid for protein synthesis to the ribosomes.

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Q:

Is cholesterol Hydrophobic or Hydrophilic?

A) Hydrophobic	B) Hydrophilic
C) Both A & B	D) None of the above

Answer & Explanation Answer: C) Both A & B

Explanation:

Cholesterol is referred as an amphipathic molecule, that it contains its hydrophilic and hydrophobic parts.

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Q:

Which of these instruments is used to measure the wind speed?

A) Anemometer	B) Inclinometer
C) Fathometer	D) Calorimeter

Answer & Explanation Answer: A) Anemometer

Explanation:

Anemometer is the instrument that is used for measuring the speed of wind or any gas currents.

Which_of_these_instruments_is_used_to_measure_the_wind_speed1560165843.jpg image

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Q:

Which describes how mRNA is used by a cell?

A) It is used to move information to other cells.	B) It is used to check DNA for mutations.
C) It is used to replicate DNA for mitosis.	D) It is used to transfer genetic information.

Answer & Explanation Answer: D) It is used to transfer genetic information.

Explanation:

A RNA copy of a DNA gene is called as messenger RNA or mRNA. mRna is used in translation because information is translated from one language (nucleotides) into another (amino acids).

Hence, mRNA is used to transfer genetic information by a cell.

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Q:

The thyroid hormone that regulates carbohydrate metabolism is

A) Parathyroid	B) Thyroxin
C) Parathormone	D) Estrogen

Answer & Explanation Answer: B) Thyroxin

Explanation:

Thyroxin or Thyroxine is the thyroid hormone that regulates carbohydrate metabolism in the human body.

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Q:

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

Neither of the scout leaders know (A)/ how to trap wild animals (B)/ or how to prepare them for mounting (C)/ No Error (D)

A) A	B) B
C) C	D) D

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