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 Biology Questions

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Q:

Dysfunctional behaviors are maladaptive which means that they

A) are medicated B) interfere with everyday life
C) cause of stress D) all of the above
 
Answer & Explanation Answer: B) interfere with everyday life

Explanation:

Dysfunctional behaviors are maladaptive which means that they interfere with everyday life.

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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:

Which occurs during transcription?

A) Proteins are produced B) Ribosomes produces
C) DNA information is copied to RNA D) All of the above
 
Answer & Explanation Answer: C) DNA information is copied to RNA

Explanation:

Transcription is the process of copying the genetic material or information that is the DNA to messenger RNA (mRNA.

 

transcription_translation1531736868.jpg image

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Q:

The first formed primary xylem elements are called ___________.

A) Metaxylem B) Protoxylem
C) Xylem fibres D) Xylem parenchyma
 
Answer & Explanation Answer: B) Protoxylem

Explanation:
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Q:

Which one of the following functions is not carried out by smooth endoplasmic reticulum?

A) Transport of materials B) Synthesis of lipid
C) Synthesis of protein D) Synthesis of steroid hormone
 
Answer & Explanation Answer: C) Synthesis of protein

Explanation:

Smooth Endoplasmic Reticulumdoes not contain ribosomes on its surface for which it is regarded as smooth. So, proteins cannotbe synthesised by SER provided protein synthesis is the primary task of ribosomes.

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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:

Oxygen crosses a plasma membrane by

A) Osmosis B) Evaporation
C) Concatenation D) Diffusion
 
Answer & Explanation Answer: A) Osmosis

Explanation:

Oxygen crosses a plasma membrane by Osmosis.

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Q:

Marasmus usually is associated with a deficiency of

A) Vitamins B) Calories
C) Proteins D) Fats
 
Answer & Explanation Answer: B) Calories

Explanation:

Marasmus usually is associated with a deficiency of Calories.

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