National Standard Examination in Biology (NSEB) Solved Paper 2016 Part-2

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Q: 10. Two initial stages (I and II) of conjugation between Bacteria ‘A’ and ‘B’ are

Image F-Plasmid Bacteria Transferred from A and B

F-Plasmid Bacteria Transferred from a and B

Image F-Plasmid Bacteria Transferred from A and B

Which of the events will follow?

(A) Both strands of F plasmid will be transferred from A to B with A becoming F negative and B becoming F positive

(B) Only one strand of F plasmid will be transferred from A to B complementary strands will be synthesized making both cells F-positive

(C) genomic DNA will be transferred from A to B and remains F-Positive while B remains F-negative

(D) Both genomic DNA and plasmid will transferred from A to B. Consequently, cell A dies

Answer: (B)

Q: 11. If one arginine has molecular weight of 174 Daltons, then what be the molecular weight (Daltons) of a linear polymer of 30 arginine’s

(A) 5760

(B) 5220

(C) 4698

(D) 4680

Answer: (C)

Q: 12. A few cells and associated entities are listed. Which of them represents the correct ascending order of the size relative to each other?

(A) Mitochondrion < Paramecium < Human < Erythrocyte < E. coli

(B) Protein < Virus < Mitochondrion < Paramecium

(C) Chloroplast < Protein < Human sperm < frog egg

(D) Nucleus < Protein < Paramecium < Chloroplast

Answer: (A)

Q: 13. In the accompanying relative concentration of concentration of certain ions in water and in cytosol of the green alga Nitella has shown, If 5 represents Which of the numbered bars in the figure represent respectively

Graph of Accompanying Relative Concentration of water and cytosol

Accompanying Relative Concentration of Water and Cytosol

Graph of Accompanying Relative Concentration of water and cytosol

(A) 2, 3, 4 & 1

(B) 1, 2, 3 & 4

(C) 3, 2, 1 & 4

(D) 3, 4, 1 & 2

Answer: (D)

Q: 14 The chemical transformations occurring in glycolysis can be summarized as follows

If NAD + is not available, the pathway will be blocked at the reaction represented by

Q 14 Image of Glycolysis Process

Glycolysis Process

Q 14 Image of Glycolysis Process

(A) 2

(B) 3

(C) 4

(D) 5

Answer:(B)

Q: 15. In the accompanying diagram a single set of chromosomes is found in

(i). Germinal cell

(ii). Spermatogonium

(iii). Primary spermatocyte

(iv). Secondary Spermatocyte

(v). Spermatid

(A)

(B)

(C)

(D)

Answer: (C)

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