Download Assignment 2 solution

Biology for engineers and other non-biologists
Assignment 2 (Week 2) answer key
The correct option is highlighted
1. Function of a protein depends on
(a) Its structure
(b) Its external environment
(c) Its amino sequence
(d) All of the above
2. Following are the four basic biomolecules
(a) Protein, starch, fatty acid and ATP
(b) Protein, carbohydrate, lipid and nucleic acid
(c) Amino acid, fatty acid, phosphate, ribose
(d) Enzyme, fatty acid, sugars, ATP
3. Which of the following is the common feature between prokaryotes and eukaryotes?
a)
b)
c)
d)
Presence of nucleus
Presence of organelles
Presence of plasma membrane
Replication by sexual reproduction
4. Enzymes are used in which of the following industries
(a) Meat industry
(b) Plastic industry
(c) Baking industry
(d) All of the above
5. Sickle cell anemia is characterized by
(a) Sickle shaped lung cells
(b) Defective oxygen transport in blood
(c) Replacement of all glutamate residues by valine
(d) All of the above
6. Which of the following statements about Prokaryotes is true?
a)
b)
c)
d)
They do not have organelles
They reproduce sexually
They are diploids
All of the above
7. Which property of water allows insects such as mosquitoes and the water strider to ‘walk’
on water?
(a)
(b)
(c)
(d)
8.
Its ability to naturally exist in all three states of matter
High specific heat
High surface tension
Higher density of water than ice
Base pairing in DNA is as follows
(a)
(b)
(c)
(d)
Adenine – Guanine; Thymine – Cytosine
Adenine – Uracil; Thymine – Cytosine
Adenine – Thymine; Cytosine – Guanine
Adenine – Uracil; Guanine – Cytosine
9. Which of the following statements about the lipid bilayer of membrane is true
(a) It discourages the passive movement of molecules across it
(b) Forms a cell envelope
(c) Acts as an effective barrier separating the intracellular compartment from the
extracellular medium
(d) All of the above
10. Why are viruses “obligatory parasites”?
a)
b)
c)
d)
Because they can be crystallized
Because they definitely have to infect another organism to replicate
Because they are smaller than bacteria
Because they can be seen only through an electron microscope