Download Check Your Knowledge Set 1(Download)

Q.1) Multiple choice question. Select the correct answer. If more than one
answer is correct, select the best one.
(24 marks).
1. The process of copying the genetic information from DNA to mRNA in the nucleus
is called:
A) Transduction
B) Transdormation
C) Transcription
D) Translation
2. The phenomenon of clinking one substance to another like water to cell wall is
called:
A) Polarity
B) Surface tension
C) Adhesion
D) Cohesion
3.
A)
B)
C)
D)
The transport method of neurotransmitters between nerve cells is:
Exocytosis
Passive transport
Receptor-mediated endocytosis
Active transport
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4. A dehydration reaction between Glucose and Fructose molecules leads to formation
of:
A) Maltose
B) Galactose
C) Ribose
D) Sucrose
5. The water properties which are responsible for pulling the water upward from the
roots to the leaves:
A) Cohesion and surface tension
B) Adhesion and polarity
C) Cohesion and adhesion
D) Adhesion and surface tension
6.
A)
B)
C)
D)
Cholesterol is a:
Polypeptide
Steroid
Protein
Phospholipid
7.
A)
B)
C)
D)
All of the following are hydrophobic EXCEPT:
Nonpolar compounds
Cotton
Nonionic compounds
Tryptophan
8.
A)
B)
C)
D)
One class of large biological molecules that does NOT consist of polymers is:
Carbohydrates
Nucleic Acids
Proteins
Lipids
9.
A)
B)
C)
D)
Which of the following assists in the proper folding of other proteins?
Chaperonins
Ribosomes
Mitochondria
Ribosomal RNA
10. The quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid
to the gaseous state is called:
A) Temperature of vaporization
B) Specific temperature
C) Specific heat
D) Heat of vaporization
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11. The transport method of low density lipoproteins (LDL) across the plasma
membrane of human cells is:
A) Exocytosis
B) Active transport
C) Passive transport
D) Receptor-mediated endocytosis
12. Which series of terms is in the sequence of biological organization from the simplest
to the most complex?
A) Tissue, organ system, organ, cell, organism
B) Tissue, organ, organism, population, community
C) Community, population, ecosystem, habitat, biosphere
D) Organism, ecosystem, community, population, biosphere
13.
A)
B)
C)
D)
The structural polysaccharide Chitin is found in:
Cow
Spider
Fish
All of the above
14.
A)
B)
C)
D)
Each DNA molecule has two polynucleotides that form a/an
Alpha helix
β -Pleated sheet
Double helix
Single helix
15. All cells (Prokaryotic and Eukaryotic) have basic features in common which
include:
A) Plasma membrane, DNA, nuclear envelope, and ribosomes
B) Plasma membrane, cytosol, DNA, and Golgi apparatus
C) Ribosomes, cytosol, nucleus, and DNA
D) DNA, ribosomes, cytosol, and plasma membrane
16. The integrated channel proteins within the plasma membrane transfer all of the
following substances EXCEPT :
A) Sodium ions down their concentration gradient
B) Glucose
C) Water
D) Potassium ions down their concentration gradient
17.
A)
B)
C)
D)
One of the following is NOT part of the endomembrane system:
Transport vesicles
Plasma membrane
Ribosomes
Endoplasmic reticulum and Golgi apparatus
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18.
A)
B)
C)
D)
Which of the following is TRUE about the phospholipid bilayer?
It has hydrophilic heads and hydrophobic tails
Hydrophobic ends are facing each other
It has fatty and phosphate ends
All of the above
19.
A)
B)
C)
D)
One of the following compounds does NOT dissolve in water:
Plant's Sap
Polar compounds
Lysozyme
Cellulose
20.
A)
B)
C)
D)
Hemoglobin is composed of 4 subunits. The structural level of this molecule is:
Primary protein structure
Tertiary protein structure
Secondary protein structure
Quaternary protein structure
21.
A)
B)
C)
D)
The function of flagella that are found in some bacteria is:
Protein synthesis
Enhancement of transcription
Locomotion (movement)
Insertion of foreign DNA
22.
A)
B)
C)
D)
Which of the following is NOT TRUE about saturated fats?
Stearic acid is one of their fatty acids
Have no double bonds
Usually solid at room temperature
Animal fats are mostly saturated
23.
A)
B)
C)
D)
Humans and other mammals store their fats in:
Muscle
Stomach
Pancreas
Adipose tissue
24.
A)
B)
C)
D)
One of the following acts as a "temperature buffer" for cell membranes:
Cholesterol
Integral proteins
Hydrocarbons of fatty acids
Glycolipid
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Q2: Write the name of cell component that is related to each of the
following descriptions: (9 marks)
Description
Name of the cell
component
1 Stacks of flattened membranous sacs; has polarity (cis and trans
2
3
4
5
6
7
8
9
faces)
Membranous sac of hydrolytic enzymes (in animal cells)
Contains enzymes that transfer hydrogen to oxygen, producing
hydrogen peroxide as a by-product, which is converted to water by
other enzymes
Large membrane-bounded vesicle in plants for digestion, storage,
waste disposal, water balance, cell growth, and protection
Extensive network of membrane-bound tubules and sacs, one of the
functions is detoxification of drugs and poisons
A network of fibers that organizes structures and activities in the
cell such as support, motility, and regulation
An open channel in the cell wall of a plant
A complex of proteins and DNA
Not found in plant cells and one of the ingredients is proteoglycan
Q3: Name each of the functional groups (shaded) below each figure (5
marks)
1...................... 2.....................
3.....................
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4........................
5.........................
Q4: According to the profile of a plant cell below answer the corresponding
questions (7 marks)
-Name the proteins A and B
-Which arrow(s) represent passive diffusion?
-What are the force(s) driving the movement of H+ in arrow 2?
-Which one is the cytoplasmic side: side 1 or side 2?
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Answer Key
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2.
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5.
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8.
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24.
C
C
A
D
C
B
B
D
A
D
D
B
B
C
D
B
C
D
D
D
C
B
D
A
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