Riphah International College
(WAH CANTT CAMPUS)
Test-4 (10-04-2023)
Subject Name: Biology
Max Marks: 50
Group:
Time Allowed: 2 hour
Student Name:
Student ID:
SECTION-A(MCQS)
Q No.1: Choose the correct answer:
1.
Which class of molecule is the major component of cell membrane.
a) Phospholipid b)
2.
c) enzyme
d) isoenzyme
b)
mitochondria
c)
cell membrane
d) cell DNA
b) Photolysis
c) Substrate phosphorylation
d) Photophosphorylation
b) Blasto pore-anus
c)
Schizocoelom
d) Annelids
b) Lophotrichous
c) Amphitrichous
d) Peritrichous
c)
Flagella
d) Both pili and flagella
b) Arthropoda
c)
Porifera
d) Mollusca
b) Jawless fish
c)
Ray finned
d) Bony fishes with lungs
b) Pili
Sponges belong to the phylum
a) Aschelminthes
10.
b) holoenzyme
Conjugation is facilitated by
a) Capsule
9.
d) All of them
A bacterium with flagella all around is
a) Monotrichous
8.
b) Contains double bonds c) Contains an acid group
Which of these does not pertain to a protostome?
a) Spiral cleavage
7.
d) Triglyceride
ATP synthesis during light reaction is
a) Oxidation
6.
Wax
Many enzymes are secreted in an inactive form to protect
a) cell proteins
5.
c)
Combination of apoenzyme and coenzyme produces.
a) prosthetic group
4.
Cellulose
A fatty acid is unsaturated if it
a) Contains hydrogen
3.
(10marks)
Amphibians arose from
a) Cartilaginous fish
SECTION-B(Short Questions)
Q No.2: Attempt any eight questions:
(24 marks)
i.
ii.
iii.
iv.
v.
vi.
vii.
Why water is regarded as universal solvent?
Describe (a) globular proteins (b) fibrous protein.
To what life style is bilateral symmetry an adaptation?
List any four harmful roles of insects
What are enzyme inhibitors? Name the molecules which act as enzyme inhibitors.
What is the importance of G3P?
Classify bacteria on the basis of methods of obtaining energy and carbon.
viii.
Name any five diseases caused by bacteria in man
ix.
x.
.
Name the four criteria for animal classification.
Classify animals on the basis of presence and absence of tissue.
SECTION-C (Long Questions)
Note: Attempt any TWO question:
(16 marks)
Q No. 3 (a): What is photosynthesis? Explain the role of light in photosynthesis.
(5)
(b): Describe the structure of chlorophyll.
(3)
Q No. 4 (a): Write the empirical formula of monosaccharides and classify them.
(b): How the properties of water make it the cradle of life?
(5)
(3)
Q No. 5 (a): Differentiate between pseudocoelomates, acoelomates and coelomates. Classify coelomates into
protostomes and deuterostomes.
(5)
(b): Differentiate the diploblastic and triploblastic levels of organization
GooD LucK
(3)