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- Question
Which nitrogenous base is not found in dna?
Options- A. Uracil
- B. Thymine
- C. Cytosine
- D. Guanine
- Correct Answer
- Uracil
ExplanationA nitrogenous base, or nitrogen-containing base, is an organic molecule with a nitrogen atom that has the chemical properties of a base. The main biological function of a nitrogenous base is to bond nucleic acids together. A nitrogenous base owes its basic properties to the lone pair of electrons of a nitrogen atom.
In DNA, four bases have been found. They are
1. Adenine (A),
2. Guanine (G),
3. Cytosine (C) and
4. Thymine (T).
The first three of these bases are found in RNA also but the fourth which is Uracil (U) is absent in it.
RNA contains cytosine and uracil as pyrimidine bases while DNA has cytosine and thymine.
- 1. The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
Options- A. an addition reaction
- B. a condensation reaction
- C. an oxidation reaction
- D. an elimination reaction Discuss
- 2. Which of the following is not an isotope of hydrogen?
Options- A. Tritium
- B. Deuterium
- C. Protium
- D. Yttrium Discuss
- 3. The IBM PC-XT was the first to include a hard drive. What was the capacity of this disk?
Options- A. 20 MB
- B. 1.44 MB
- C. 10 MB
- D. 750 KB Discuss
- 4. The great Victoria Desert is located in
Options- A. Canada
- B. West Africa
- C. Australia
- D. North America Discuss
- 5. Nuclear fission is caused by the impact of
Options- A. neutron
- B. proton
- C. deuteron
- D. electron Discuss
- 6. Which of the following is a warm current?
Options- A. Benguela current
- B. Labrador current
- C. Kurosiwo current
- D. South Pacific current Discuss
- 7. In which year did Ajay Jadeja make his ODI debut?
Options- A. 1996
- B. 1985
- C. 1992
- D. 1991 Discuss
- 8. 'The Gathering Storm' is written by
Options- A. Winston Churchill
- B. George Washington
- C. Voltaire
- D. Romain Rolland Discuss
- 9. Which of the following countries is not a member of a SAARC
Options- A. Sri Lanka
- B. Myanmar
- C. Maldives
- D. Bhutan Discuss
- 10. Each year World Red Cross and Red Crescent Day is celebrated on
Options- A. May 8
- B. May 18
- C. June 8
- D. June 18 Discuss
More questions
Correct Answer: a condensation reaction
Correct Answer: Yttrium
Explanation:
http://en.wikipedia.org/wiki/Isotopes_of_hydrogen
Correct Answer: 10 MB
Explanation:
The original IBM PC used 5.25-inch floppy disks to store its operating system and programs. IBM referred to the new hard disk as a Fixed Disk. Today, even a the operating system wont fit on a 10 MB disk.
Correct Answer: Australia
Correct Answer: neutron
Correct Answer: Kurosiwo current
Correct Answer: 1992
Explanation:
That match was between India and Sri Lanka.
Correct Answer: Winston Churchill
Correct Answer: Myanmar
Correct Answer: May 8
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