Download PTU B.Sc -MLS 1st Semester 2019 May 48046 ESSENTIAL BIOLOGY Question Paper

Download PTU (I. K. Gujral Punjab Technical University) B-Sc MLS (B.Sc. Medical Laboratory Sciences) 1st Semester 2019 May 48046 ESSENTIAL BIOLOGY Question Paper.

1 | M-48046 (S2)-652
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(MLS) (2013 to 2017) (Sem.?1)
ESSENTIAL BIOLOGY
Subject Code : BMLS-101
M.Code : 48046
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
Q1 Answer all of them :
a) What is central dogma?
b) What is a genotype?
c) What is co dominance?
d) What is the power house of the cell? Explain.
e) What are abiotic and biotic component of ecosystem?
f) Name various cytoskeletal proteins.
g) What are malphigian tubules?
h) What is food web?
i) Differentiate purine and pyrimidine.
j) What is binomial nomenclature?
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1 | M-48046 (S2)-652
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(MLS) (2013 to 2017) (Sem.?1)
ESSENTIAL BIOLOGY
Subject Code : BMLS-101
M.Code : 48046
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
Q1 Answer all of them :
a) What is central dogma?
b) What is a genotype?
c) What is co dominance?
d) What is the power house of the cell? Explain.
e) What are abiotic and biotic component of ecosystem?
f) Name various cytoskeletal proteins.
g) What are malphigian tubules?
h) What is food web?
i) Differentiate purine and pyrimidine.
j) What is binomial nomenclature?
2 | M-48046 (S2)-652
SECTION-B
2. Differentiate prokaryotic vs eukaryotic cells.
3. What is Miller-Urey experiment? Explain its significance.
4. Explain fluid mosaic model of plasma membrane.
5. Discuss various layers of atmosphere.
6. What is nitrogen fixation? Discuss nitrogen cycle.

SECTION-C
7. ?DNA as a genetic material?. Discuss.
8. Discuss various stages of meiosis.
9. What are various systems of classification of living organism? Explain their merits and
demerits.









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page of Answer Sheet will lead to UMC against the Student.

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