University of Delhi 2008 B.Sc General (Prog.)/(Hons.)/1 [ University] - Question Paper

B.Sc. (Prog.)/B.Sc. (Hons.)/1

BY 105 (a)-BIOLOGY
Maximum Marks: 75
ans part A and B on separate answer-books.
part A
ans 3 ques. in all including ques. No.1 which is compulsory.
1. (A) Match the following: [Marks-8]
(1) Plasma membrane Proteins
(2) Tertiary structure Fatty acids
(3) Prokaryotes Cellulose
(4) Lipids Mitosis
(5) Nucleotides Nucleoid
(6) Pri.Cell wall Mitochondria
(7) Cisternae DNA
(8) Prophase Singer and Nicholson

(B) Comment on: [Marks-6]
(1) Radioactive isotopes;
(2) Svedberg’s unit;
(3) Resolution;
(4) Disulphide bonds;
(5) Micelle;
(6) Chromosomes.

2. (A) Is water important for life? elaborate the physical and chemical properties of water that make it essential? [Marks-6]
(B) define the role of C, H, and O in plant life. [Marks-6]

3. Write short note on any four: [Marks-12]
(a) Amylopectin;
(b) Amino acids;
(c) Compound microscope;
(d) Polypeptides;
(e) Cell cycle.

4. Differentiate ranging from any four: [Marks-12]
(a) Saturated and Unsaturated fatty acids;
(b) Prokaryotes and Eukaryotes;
(c) Metaphase and Anaphase;
(d) R.E.R and S.E.R;
(e) Alpha-D, glucose and Beta-D, glucose.
5. (A) provide 1 word answer: [Marks-4]
(a) An organelle concerned with secretion;
(b) An optical instrument used to study cell ultra structure;
(c) A cell without internal membranous system
(d) A process concerned with partition of 2 daughter nuclei.

(B) Draw the diagrams of any 2 of following: [Marks-8]
(a) An electron micrograph of bacteria cell;
(b) An electron micrograph of chloroplast;
(c) Electron micrograph of mitochondria;
(d) A cell at Metaphase-II stage of meiosis.


part B
ans 3 ques. in all including ques. No.1 which is compulsory. Draw diagram where necessary.
1. (A) Define: [Marks-4]
(1) Bioinformatics;
(2) Synapses;
(3) Cardiogram;
(4) Cell fractionation.
(B) Differentiate between: [Marks-6]
(1) Mitosis and Meiosis;
(2) Homology and Analogy;
(3) Allopatry and Sympatry.
(C) Expand the following: [Marks-2]
(1) ATP;
(2) DNA.

2. (A) define the structural and functional distinction ranging from rough endoplasmic reticulum and smooth endoplasmic reticulum.[Marks-8]
(B) Draw a neat labelled diagram of cell cycle. (No description is required) [Marks-4*1/2]

3. (A) discuss biological species concept and its limitations.[Marks-8]
(B) define briefly the methodologies used to study genes and gene activities [Marks-4*1/2]

4. Write short notes on following:
(A) Light microscope; [Marks-6*1/2]
(B) Translation of RNA. [Marks-6]

Earning:   Approval pending.