University of Delhi 2010-1st Year B.Sc PMCS (Physics, Mathematics, Computer Science) Prog BIOLOGY MODERN PHYSICS UNIVERSITY - Question Paper
This question paper contains 4 printed pages.]
Your Roll No ........
B.Sc. (Prog.)/B.Sc. (Hons.)/I J
BY 105 (a)-BIOLOGY (Admission of 2008 and onwards)
Time : 3 Hours Maximum Marks : 75
(Write your Roll No. on the top immediately on receipt of this question paper.)
Answer Sections A and B on separate answer-books
SECTION-A
Question No. 1 is compulsory Attempt 3 questions m all. Make diagrams wherever necessary.
1. (a) Define
|
(1) |
Prokaryotic cell |
|
(11) |
Centromere |
|
(ill) |
pH Scale |
|
(IV) |
Polysaccharides |
|
(V) |
Radioactive isotopes |
|
(VI) |
Mass Number |
|
(VII) |
Ionic bonds |
|
(vin) |
Golgi bodies |
|
(IX) |
Compound microscope |
(b) Give a brief account of the structure of Plasma*membrane. What role does it play in controlling cellular functions. 5
2. (a) How are the amino acids classified on the basis of their sick chains ? Gtve at least 3 examples. 6
(b) Comment on :
Biological role of water OR
Role of carbohydrates. 6
3. (a) Describe various kinds of covalent bonds
with suitable examples. How are covalent
bonds different from the ionic bonds 9
(b) Give one word answer:
(1) A technique used to study the molecular structure of proteins
(ii) A method employed for separation of chloroplast pigments
(ni) A method for cell fractionation
(tv) An optical instrument employed for cell study.
(v) A technique used to study the nature of the bacterial cell wall
|
(>) |
Primary and Secondary structure of |
|
proteins | |
|
(n) |
Karyoplasm and cytoplasm |
|
(hi) |
RNA and DNA |
|
(iv) |
a-D Glucose and P-D Glucose |
|
(v) |
Macro elements and Micro-eiements. |
|
(vi) |
Bacterium and yeast cell. |
|
Write short notes on any four | |
|
(0 |
Hydrogen bonds |
|
00 |
Chloroplast |
|
(ill) |
Mitosis |
|
(iv) |
Storage tissues |
|
(V) |
Starch |
|
SECTION - B | |
Attempt three questions m all, including Question No 1 which is compulsory Draw diagrams wherever necessary
L (a) Define: 4
(i) Genomics (u) Binary Fission (in) Crossing over
(iv) Probing
(b) Differentiate between *
(i) DNA & RNA
(ii) Denved and Ancestral characters
(iii) Animal and Plant cell.
(c) Expand the Abbreviations :
(i) MPF
(ii) Cdk
II. (a) How do isolating barriers help in species
formation ? 8
(b) Briefly describe replication of DNA. 4Vi
HI. (a) Describe how over production and heritable variations relate to evolution by Natural selection. 8
(b) Write a short note on cell Fractionation. 4Vi
IV. Wnte short notes on :
(i) Lysosome 6Vi
(ii) Cladogram 6
5163 4 3,000
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Attachment: |
| Earning: Approval pending. |
