Sawaal

 Biology Questions

Popular Latest Rated
Q:

The artificial kidney is a

A) transplant B) machine
C) another's kidney D) other kidney from same body
 
Answer & Explanation Answer: B) machine

Explanation:

The artificial kidney is the dialysis machine. Blood from the body is fed into the machine which removes nitrogenous wastes like urea and returns the blood back to the body.People with renal failure have to use this machine.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

11 3631
Q:

The process of forming urine begins in the

 

A) embryo B) ureter
C) nephrons D) urethra
 
Answer & Explanation Answer: C) nephrons

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: Bank Exams

0 3627
Q:

The enzyme that is necessary to bring about clotting of blood is 

A) peptidase B) amylase
C) lipase D) thrombokinase
 
Answer & Explanation Answer: D) thrombokinase

Explanation:

The clotting of blood is a chain reaction initiated by the enzyme thrombokinase produced by the platelets. This causes prothrombin to be converted into thrombin in the presence of Ca++ion.

Thrombin combines with fibrinogen  to produce fibrin threads which entangles the corpuscles to form the clot.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , GATE

8 3624
Q:

In a bisexual flower if androcium and gynoecium mature at different time the phenomeon is known as _________

A) Dichogamy B) Herpogamy
C) Haterogamy monogamy D) None of these
 
Answer & Explanation Answer: A) Dichogamy

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

10 3622
Q:

Hepatitis virus destroys the cells and may cause the disease

A) Jaundice B) Malaria
C) Typhoid D) Elephantiasis
 
Answer & Explanation Answer: A) Jaundice

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

7 3609
Q:

A tetrad is made up of

A) four homologous pairs of chromosomes B) two homologous chromosomes, each consisting of two chromatids
C) four non-homologous chromosomes D) two homologous pairs of chromosomes
 
Answer & Explanation Answer: B) two homologous chromosomes, each consisting of two chromatids

Explanation:

A tetrad is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.

 

A_tetrad_is_made_up_of1562827273.jpg image

Report Error

View Answer Report Error Discuss

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

5 3592
Q:

Which of the following statements about ddntps is true?

A) They have a hydrogen at the 3’ carbon of the sugar. B) DNA polymerase can add a new dNTP to a 3’ ddNTP.
C) They have a free 3’-hydroxyl group on the ribose sugar. D) They have an oxygen at the 2’ carbon of the ribose sugar.
 
Answer & Explanation Answer: A) They have a hydrogen at the 3’ carbon of the sugar.

Explanation:

ddNTPs - Dideoxynucleotides and abbreviated as ddNTPs.

 

They are chain-elongating inhibitors of DNA polymerase, used in the Sanger method for DNA sequencing.

 

They have a hydrogen at the 3’ carbon of the ribose sugar.

Report Error

View Answer Report Error Discuss

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

3 3591
Q:

The normal blood pressure in human beings is

A) 80/120 B) 120/80
C) 80/110 D) 110/90
 
Answer & Explanation Answer: B) 120/80

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

8 3573