Job Roles

Q:

Which discovery is attributed to Phoebus Levene?

A) identification of ribose and deoxyribose B) recognition of RNA as DNA’s messenger
C) extraction and observation of DNA D) construction of an accurate DNA model
 
Answer & Explanation Answer: A) identification of ribose and deoxyribose

Explanation:

Phoebus Levene was an organic chemist in the early 1900's. He is perhaps best known for his incorrect tetranucleotide hypothesis of DNA. He is who studied the structure and function of nucleic acids.

 

The discovery of Identification of Ribose and Deoxyribose is attributed to Phoebus Levene.

Report Error

View Answer Report Error Discuss

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

1 1627
Q:

CD-ROM is a semiconductor memory.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

"CD-ROM is a semiconductor memory" is a FALSE statement.


 


Compact Disc-Read-Only Memory, a type of optical disk capable of storing large amounts of data -- up to 1GB, although the most common size is 650MB (megabytes). A single CD-ROM has the storage capacity of 700 floppy disks, enough memory to store about 300,000 textpages.


 


Semiconductor memory is a type of semiconductor device tasked with storing data. There are two electronic data storage mediums that we can utilize, magnetic or optical.


 


Magnetic storage:


* Stores data in magnetic form.


* Affected by magnetic fields.


* Has high storage capacity.


* Doesn't use a laser to read/write data.


* Magnetic storage devices are; Hard disk , Floppy disk, Magnetic tape etc.


 


Optical storage:


* Stores data optically, uses laser to read/write.


* Not affected by magnetic fields.


* Has less storage than a hard disk.


* Data accessing is high, compared to a floppy disc.


* Optical storage devices are; CD-ROM,CD-R, CD-RW, DVD etc.


 


There is also volatile memory. This is memory that loses its data once power is cut off, while non-volatile memory retains data even without power.

Report Error

View Answer Workspace Report Error Discuss

Subject: Computer
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

65 23512
Q:

Whose teachings did the pilgrims follow?

Answer

The pilgrims follow John Calvin's teachings.

Report Error

View answer Workspace Report Error Discuss

Subject: Indian Culture Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

27 2074
Q:

Main street high school has 10 members on its football team and 14 members on its science club. 5 members at the school belong to both the football and science teams. How many students belong to only science club team or football team?

A) 9 B) 14
C) 24 D) 21
 
Answer & Explanation Answer: A) 9

Explanation:

Given that,

Members in football team = n(f) = 10

Members in science club = n(s) = 14

Members in both football team and science club = n(f ^ s) = 5

 

Then, Members in only football team = n(F) = 10 - 5 = 5

Members in only science team = n(S) = 14 - 5 = 9

football_science_teams1533013879.jpg image

 

Hence, members in only football or science team = n(FUS) = n(F) + n(S) - n(f^s) 

= 9 + 5 - 5

= 9.

 

Hence, many students belong to only science club team or football team = 9.

Report Error

View Answer Report Error Discuss

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

60 10444
Q:

Ketchup stored in a tin can may lead to chemical contamination.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The given statement is True.


Ketchup is acidic, having a pH of 3.9. The acidic component, acetic acid, will react with the metal tin. This reaction will result in a metal acetate that will contaminate the ketchup.


 


Hence, The acetic acid in the ketchup will react with the metal tin, forming a metal acetate that will pass into the ketchup which leads to its contamination.

Report Error

View Answer Workspace Report Error Discuss

Subject: Chemistry
Exam Prep: AIEEE , Bank Exams , GATE
Job Role: Analyst , Bank Clerk , Bank PO

2 2743
Q:

Who propounded 'Deen-E-Llahi'?

A) Jahangir B) Akbar
C) Shah Jahan D) Humayun
 
Answer & Explanation Answer: B) Akbar

Explanation:

Mughal emperor, Abu'l-Fath Jalal ud-din Muhammad Akbar popularly known as Akbar propounded a syncretic religion called 'Din-i-ilahi' which literally means that "Religion of God".

akbar1533011882.jpg image

His intention in propounding this religion is to merge the best elements of the religions of his empire, and thereby reconcile the differences that divided his subjects.

Report Error

View Answer Report Error Discuss

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

4 1695
Q:

Most of the oxygen transported by the blood is

A) bound to hemoglobin B) dissolved in plasma
C) dissolved in water D) in ionic form as solute in plasma
 
Answer & Explanation Answer: A) bound to hemoglobin

Explanation:

Oxygen is transported throughout the body via hemoglobin in the red blood cells. Hence, most of the oxygen transported by the blood is bounded to hemoglobin.

Report Error

View Answer Report Error Discuss

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

4 1650
Q:

206 B in a B?

Answer

206 Bones in the Human Body.

Report Error

View answer Workspace Report Error Discuss

Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

271 71643