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Introductory Biology 1010
Dr. K. S. Dulai
Introductory Biology - Autumn 2007 Exam 1
Answer ALL 50 questions by marking your answers on your scantron. Take your time and understand each
question before you answer. Good Luck! Please keep this document when finished. Just return your
scantron to me. As you leave I will check to see that you are enrolled in this class. To save on paper, the format
is squeezed together in some places.
FIRST NAME______________________________
LAST NAME__________________________________
Q1
What is biology? Select your answer from those below.
a.
The study of humans
b.
The study of life
c.
The study of atoms
d.
The study of natural forces
e.
The study of stars
Q2
The fundamental units of life are
a.
Atoms
b.
Proteins
c.
Viruses
d.
e.
Cells
Humans
Life requires which of the following?
a.
Energy
b.
Rest
c.
Love
d.
e.
Peace
Predators
Q3
Q4
What is scientific theory?
a.
A hypothesis supported by a great deal of evidence which stands the test of time, often
tested and never rejected.
b.
A good educated guess
c.
A hunch
d.
An idea
e.
None of the above
Q5
If one believes in evolution then one,
a.
Must reject religion out right
b.
Must also accept religion
c.
May also be religious
d.
Must be a communist
e.
None of the above
Q6
How many elements are known? NOT GRADED
a.
Less than 5
b.
More than 5 but less than 50
c.
More than 50 but less than 100
d.
More than 100 but less than 1000
e.
None of the above
Q7
How many covalent bonds can hydrogen form?
a.
1
b.
2
c.
3
d.
e.
4
5
How many covalent bonds can oxygen form?
a.
1
b.
2
c.
3
d.
e.
4
5
Q8
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Introductory Biology 1010
Q9
Dr. K. S. Dulai
How many covalent bonds can carbon form?
a.
1
b.
2
c.
3
d.
e.
4
5
Q10
If ice were more dense than water which of the following would be true?
a.
Rain would fall upwards
b.
The oceans would be frozen solid except for a few metres near the surface
c.
There would be no clouds
d.
You would be cold all the time because you would have ice bold blood
e.
None of the above
Q11
The pH scale has the following range
a.
1 - 14
b.
0 – 12
c.
1–7
d.
0 – 14
e.
1 – 12
Q12
Which of the following is a carboxyl group?
a.
NH3+
b.
OH
c.
PO4
d.
SH
e.
None of the above
Q13
During condensation reactions what happens?
a.
Water is formed from the formation of covalent bonds
b.
Water is used to break chemical bonds
c.
Water is formed from the breaking of chemical bonds
d.
Water is consumed from the formation of covalent bonds
Q14
Simple sugars are known as
a.
Monosaccharides
b.
Amino acids
c.
Fats
d.
Proteins
e.
None of the above
Q15
Which of the following is a disaccharide?
a.
Sucrose
b.
Glucose
c.
Fructose
d.
Cellulose
e.
Glycogen
Q16
Animal cells use which of the following as their preferred storage molecule?
a.
Cellulose
b.
Starch
c.
Glucose
d.
Glycogen
e.
None of the above
Q17
Which of the following are not lipids?
a.
Fats
b.
Phospholipids
c.
Waxes
d.
Sterols
e.
None of the above
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Introductory Biology 1010
Dr. K. S. Dulai
Q18
The main propose of waxes is to
a.
Supply a shiny surface
b.
Provide a store of lipid
c.
Act as insulation
d.
Act as a means of water-proofing
e.
None of the above
Q19
There are how many different amino acids which make proteins?
a.
19
b.
20
c.
22
d.
18
e.
21
Q20
Amino acids are not classified as: NOT GRADED
a.
Non-polar
b.
Uncharged, polar
c.
Positively charged, polar
d.
Charged Non-polar
e.
Negatively charged, polar
Q21
The properties of proteins are determined by;(select the best answer)
a.
The sequence of amino acids
b.
The interaction of local domains of the polypeptide chain
c.
The formation of hydrogen bonds
d.
The formation of ionic bonds
e.
All of the above
Q22
A glycoprotein consists of a protein coupled to;
a.
A glycogen molecule
b.
Saccharides
c.
Lipids
d.
Sterols
e.
None of the above
Q23
Nucleoside structure consists of the following components;
a.
Sugar, phosphate and a base
b.
Sugar, saccharide and carbohydrate
c.
Sugar, fat and a protein
d.
Sugar, DNA and a phosphate
e.
None of the above
Q24
Which of the following is not a base abbreviation used in DNA?
a.
A
b.
C
c.
G
d.
T
e.
None of the above
Why is there a limit on the size of cells?
a.
Above a certain size, material cannot be moved in or out of cell fast enough
b.
The bigger a cell is, the less surface area there is per unit volume
c.
Surface-to-volume ratio is too low
d.
All of the above
Q25
Q26
Who gets credit for seeing the first cells under a microscope?
a.
Antony van Leeuwenhoek
b.
Robert Brown
c.
Robert Hooke
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d.
e.
Sir Isaac Newton
None of the above
Introductory Biology 1010
Q27
Q28
Dr. K. S. Dulai
The limit of a light microscope is about
a.
1 metre
b.
500 mm
c.
200 nm
d.
e.
300 km
None of the above
A cell membrane is a mosaic of,
a.
Phospholipids
b.
Glycolipids
c.
Sterols
d.
e.
Proteins
All the above
Q29
Membrane proteins can function as,
a.
Adhesion proteins
b.
Communication proteins
c.
Receptor proteins
d.
Recognition proteins
e.
All the above
Q30
Which is not true of prokaryotic cells?
a.
They have a large nucleus
b.
They lack organelles
c.
They are some of the smallest living cells
d.
Their DNA is not enclosed in a membrane
e.
All the above
Q31
Which of the following are not eukaryotes?
a.
Protistans
b.
Plants
c.
Bacteria
d.
Animals
e.
Fungi
Q32
Which of the following is not an endomembrane?
a.
Endoplasmic reticulum
b.
Plasma membrane
c.
Golgi bodies
d.
Vesicles
e.
None of the above
Q33
Which fact is not true about central vacuoles? NOT GRADED
a.
It is a fluid-filled organelle
b.
Stores amino acids, sugars, wastes
c.
In mature cell, central vacuole takes up 50-90 percent of cell interior
d.
As cell grows, expansion of vacuole as a result of fluid pressure forces cell wall to
expand
e.
All the above
Q34
Which is not true of mitochondria? NOT GRADED
a.
ATP-producing powerhouses
b.
Single-membrane system
c.
Carry out the most efficient energy-releasing reactions
d.
These reactions require oxygen
e.
All the above
Q35
Which of the following is present in a plant cell but absent in an animal cell?
a.
Nucleus
c.
Mitochondria
b.
Chloroplast
d.
Ribosomes
e.
None of the above
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Introductory Biology 1010
Dr. K. S. Dulai
Q36
The cell wall is not present in which of the following? NOT GRADED
a.
Some fungi
b.
Plants
c.
Bacteria
d.
Protistans
e.
None of the above
Q37
Which statement is true with respect to REDOX reactions and electrons?
a.
Reduction Is Gain, Oxidation Is Loss
b.
Reduction Is Loss, Oxidation Is Gain
c.
None of the above
d.
All of the above
Q38
Which statement is false?
a.
Enzymes do not make anything happen that could not happen on its own. They just
make it happen much faster.
b.
The enzyme is the same after the reaction as it was before the reaction - it remains
unchanged
c.
An enzyme usually works for the forward but not the reverse reactions.
d.
Each type of enzyme is specific - it recognizes and binds to only certain substrates.
e.
None of the above
Q39
Which factor effect enzyme activity?
a.
Temperature
b.
pH
c.
Salt concentration
d.
e.
All the above
None of the above
Q40
Which feature of feedback inhibition is correct? NOT GRADED
a.
A substrate can inhibit the production of the product
b.
A product of a different pathway can inhibit the production of product in another
pathway
c.
It generally involves enzymes
d.
A substrate of one pathway can inhibit the generation of product by a different pathway
e.
None of the above
Q41
The pH of the human stomach is around,
a. 0
b. 2
c. 5
Q42
What is not an example of diffusion?
a. A stink bomb
b. The smelling of perfume
c. The spread of an dye in a solution
d. A filling of a beaker with ball bearings
e. None of the above
Q43
Which factors do not effect diffusion?
a. Steepness of concentration gradient
b. Molecular size
c. Temperature
d. None of the above
Q44
Which of these does not require energy expenditure?
a. Active transport
b. Passive transport
c. Endosytosis
d. Exocytosis
e. None of the above
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d. 8
e. 12
Introductory Biology 1010
Dr. K. S. Dulai
Q45
Which of these substances cannot cross the plasma membrane via simple diffusion?
a. Hydrogen ion
b. Oxygen
c. Carbon dioxide
d. Water
e. None of the above
Q46
Osmosis involves the movement of what substance?
a. Hydrogen
b. Sodium
c. Carbon dioxide
d. Sugar
e. None of the above
Q47
If one places an animal cell into pure water, what will happen eventually?
a. The cell will burst
b. The cell will shrivel up
c. Nothing
d. None of the above
Q48
Which of the following is wrong about photosynthesis?
a. Carbon dioxide is needed
b. Water is needed
c. Light is needed
d. Photopigments are necessary
e. None of the above
Q49
Which of the following has the lowest energy?
a. X-rays
b. Green light
c. Microwaves
d. Gamma radiation
e. Blue light
Q50
Organisms which have to get their carbon from eating others are called?
a. Phototrophs
b. Autophototrophs
c. Megatrophs
d. Heterotrophs
e. None of the above
THE EXAM IS FINISHED. SHOULD YOU HAVE TIME PLEASE REVIEW YOUR ANSWERS. (NOTE:
ANSWERS TO SOME OF THE LATTER QUESTIONS MAY HELP YOU DEDUCE THE ANSWERS TO OTHER
QUESTIONS.
THANK YOU!
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