Maharashtra Animal and Fishery Sciences University 2009 B.Sc Biochemistry C.s.ezoology for preliminary - Question Paper

Q1. Which of the subsequent are the characteristics of prokaryotes ?
(a) Single chromosome made upofnucleic acid complexed with histone and 70 S ribosome comprisedof30 S and 50 S.(b) Single chromosome made upofnaked nucleic acid and 70 S ribosome comprisedof30 Sand 50 S.(c) Single chromosome made upofnucleic acid complexed with histone and 80 S ribosome comprisedof40 S and 50 S.(d) Single chromosome made upofnaked nucleic acid and 80 S ribosome comprised 30 Sand 50 S. 

Q2. The amountofDNA in G1 phaseofcell cycle is ?
(a) identical as obtained in G2 phase
(b) Half the amount obtained in G2 phase
(c) Double the amount obtained in G2 phase
(d) 4 times the amount obtained in G2 phase 

Q3. Consider the subsequent statements: ?
I. Friedrich Miescher 1st isolated nucleic acids from pus cells.
2. Hershey and Chase showed through experiment that genetic material was DNA and not protein.
3. Meselson and Stahl proved the semi-conservative replication of DNA.
Which of the statements provided above are correct?(
a) one and two (b) two and 3(c) one and three (d) 1,2 and 3 

Q4. The nucleolar organiser is located on the chromosome in the region of ?
(a) Primary constriction
(b) Secondary constriction(c) Kinetochore
(d) Telomere

5. During cell-cycle, the duration of which ofthe subsequent phases is the shortest?
(a) Mitosis
(b) G. phase

Q6. Prions are disease causing agents composed of(a) DNA and protein.
(b) DNA
(c) RNA
(d) Protein 

Q7. Consider the subsequent statements:
I. In the lampbrush chromosomes of am phibian oocytes, the loops are engaged in the transcription.2. In polytene chromosomes, the puffs are the sites of m RNA formation.
Which of the statements provided above is/are correct?(a) I only (b) two only(c) Both I and two (d) Neither I nor 2 

Q8. Which 1 among the subsequent has the largest number of chromosomes?
(a) Cat
(c) Man
(b) Chicken
(d) Rat 

Q9. Consider the subsequent statements regarding a DNA segment 1000 base pair long:
1. It measures 3400 A.
2. It has 10 complete turns. .3. It has 100 nucleotides.
4. The RNA synthesized from it carries 1000 nucleotides.
Which of the statements provided above are correct?
(a) I and two (b) three and 4(c) I and four (d) 1, three and 4 

Q10. Which kinds of specialized sequences are carried at both ends of line archromosomes for faithful DNA replication, aging and maintaining polarity?
(a) Satellites
(b) Telomeres
(c) Organisers
(d) Repetitive sequences 

Earning:   Approval pending.