PAPER BIOLOGY FIRST YEAR, MARKS: 50
TIME: 1:30 H CHAPTER: 1, 2, 3,4,5,6
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Q#1.PLEASE SELECT THE RIGHT ONE
- 1. Which
of the following is not an attribute of the population :
a) Population density b) gene flow c) gene structure d) gene frequency
- 2. The
branch of biology that deals with the ancestral history of the living organism are
called as a) palaeontology b) heredity c) zoogeography d) evolution
- 3. Percentage
of lipids in a mammalian cell is
a)2% b)3% c)4% d)0.25%
- 4. The
three kingdoms of life are:
a) bacteria, archaea and eukarya b) virus, bacteria and eukarya c) prokaryotes, unicellular eukaryotes
and multicellular eukaryotes d) based on
DNA
- 5. Term
vaccination was discovered by
a)
Edward Jenner b) Louis pasture c) Emil Fischer d) Robert Koshland
- 6. In
a cell the rate of an enzyme-catalyzed reaction may be increased by
a) Covalent
modification of an enzyme protein b)
increasing the concentration of a rate-limiting substrate c) increasing the concentration of the
enzyme protein d)raising the temperature of the cell
- 7. Cells
without nucleoli die because they do not possess:
a) centriole and are unable to
undergo cell division b) lysosomes and
are unable to destroy worn-out organelles c) mitochondria and are unable to
obtain energy d) ribosomes and are
unable to synthesize protein
- 8. How
do mitochondria differ from chloroplast:
a)
ATP is synthesized only in the mitochondria b)
DNA is found only in chloroplast c)
membrane-bound enzymes are found on in mitochondria d) NADP is found only in chloroplast
- 9. What
is the function of smooth endoplasmic reticulum?
a) Aerobic
respiration b) intracellular digestion c) synthesis of steroids d) transport of protein
- 10. A
virion is a
a)
virus b) viral
protein c) viral gene d) venom
- 11. Hyphomicrobium is
________________shaped bacteria:
a) Spherical b) comma shape c)
spiral d) cubical
- 12. Common
waste material stored in bacteria in the form of granules and storage bodies
are
a) alcohol, fat, phosphate b) glycogen, Sulphur, fat, phosphate c) alcohol, lactic acid d) lactic acid, alcohol, acetic acid
Q#2: Short questions
I) how
does law differ from a theory?
ii) Write
a short note on cloning
iii) What
is the general formula for an amino acid?
iv) What
do know about conjugated molecules explain with an example
v) How
does an enzyme accelerate the metabolic reaction?
vi) What
are a competitor and non-competitor enzymes?
vii) What
will happen if a chromosome loses its centromere?
viii) Is
there any similarity between bacterial and plant cell wall?
ix) What
do you know about prions and viroid?
x) What
are the modifications of Margulis and Schwartz in five kingdom classification?
XI) Do
any other microbial group besides bacteria have prokaryotic cells?
xii) What
is unique about the structure of bacterium ribosome?
Q NO.3 Long Questions (14 marks)
A) Write
a note on Koch’s postulates and flagella and pili (3)
B) Write
a note on infection cycle of HIV (3)
C) State
cell theory and discuss its emergence (3)
D)
Write a short note on amino acid (3)
E) Write
down the names of periods and eras in geological time scale (2)
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