Questions

Q:

Origins of genetic variation

A) intragenic recombination B) mutation
C) reticulation D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection. Polyploidy is an example of chromosomal mutation.

 

Mutations are changes in the DNA. A single mutation can have a large effect.

1) mutation - an alteration in DNA sequence, various types

2) intragenic recombination - results in entirely new associations of genes not present in either parental genome.


Two forms of intragenic recombination:

a) crossing over
b) independent assortment
3) reticulation – acquisition of genetic material from unrelated or relatively unrelated sources (e.g., hybrid species, horizontal gene transfer).

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

3 3141
Q:

How many amino acids are found in living organisms?

A) 1500 B) 3000
C) 20 D) 4
 
Answer & Explanation Answer: C) 20

Explanation:

Amino acids are a crucial, yet basic unit of protein, and they contain an amino group and a carboxylic group. They play an extensive role in gene expression processes.

 

Amino acids become proteins when 50 or more are bonded together in a chain. All the millions of different proteins in living things are formed by the bonding of only 20 amino acids.

 

Eight of these amino acids are essential and cannot be produced by the body.

They are:

• Leucine

• Isoleucine

• Lysine

• Threonine

• Methionine

• Phenylalanine

• Valine

• Tryptophan

•  Histidine is an amino acid that is categorized as semi-essential since the human body doesn't always need it to properly function

 

Nonessential amino acids are produced by the human body either from essential amino acids or from normal protein breakdowns. Nonessential amino acids include:

• Asparagine

• Alanine

• Arginine

• Aspartic acid

• Cysteine

• Glutamic acid

• Glutamine

• Proline

• Glycine

• Tyrosine

• Serine.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

6 3141
Q:

Which among the following is NOT a function of RBI? 

A) Serve as debt manager to other banks B) To work as monetary authority and implement its Monetary Policy
C) Serve as banker to central and state governments D) To serve as issuer of bank notes
 
Answer & Explanation Answer: A) Serve as debt manager to other banks

Explanation:

Serve as debt manager to other banks is not a function of RBI Bank.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Economy
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

5 3140
Q:

Makaibari is the costliest variety of what?

A) Coffee B) Pepper
C) Tea D) Water
 
Answer & Explanation Answer: C) Tea

Explanation:

Makaibari is the world's first tea factory and was established in 1859 in Darjeeling, West Bengal. 

 

It is most expensive tea in India which costs around 1.12 lakhs for 1 kg of tea.

 

Hence, Makaibari is the costliest variety of Tea.

Report Error

View Answer Report Error Discuss

6 3140
Q:

Name the mountain that seperates France and Spain

A) Alps B) Pyrenees
C) Jura D) Vosges
 
Answer & Explanation Answer: B) Pyrenees

Explanation:

Pyrenees, a chief mountain in Europe, forms a part of the great mountain across Europe and Asia.

Report Error

View Answer Report Error Discuss

Filed Under: World Geography

0 3140
Q:

What will happen if an object is dropped from a height and there is no air resistance?

A) It will fall with a constant speed and acceleration B) Its acceleration will increase
C) Both speed and acceleration will increase D) Its speed will increase
 
Answer & Explanation Answer: D) Its speed will increase

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT

0 3139
Q:

The technique of DNA fingerprinting in human was developed for first time by _________

A) Lalji Singh B) Alec Jeffreys
C) R. Ericson D) J. Black
 
Answer & Explanation Answer: B) Alec Jeffreys

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

6 3139
Q:

Is deposition endothermic or exothermic?

A) Endothermic B) Exothermic
C) Both A & B D) Can't be determined
 
Answer & Explanation Answer: B) Exothermic

Explanation:

In thermodynamics, deposition is a phase transition in which gases are directly transformed to solids without converting to liquids first.

 

For example, watervapour is directly changed to ice without first becoming to liquid water. In this process, heat is released making the process exothermic process.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

1 3137