BY 123-OW Mock Exam 1
1) In your body, your muscles need energy to contract. Which of the following
organelles would you expect to be overly present in a muscle cell?
a) Rough endoplasmic reticulum
b) Mitochondrion
c) Ribosomes
d) Golgi apparatus
e) Central vacuole
2) Which of the following would you expect to be least water-soluble?
a) Phospholipids
b) Triglyceride
c) Single amino acid
d) Potassium ion
e) Nucleic acid
3) A
a)
b)
c)
d)
e)
corresponds to
Glycosidic bond, lipids
ATP, passive transport
Microfilaments, movement
Microtubules, desmosomes
Degradation, endoplasmic reticulum
.
4) When the following molecule forms a polymer, what type of bond does it use?
a)
b)
c)
d)
e)
Glycosidic bond
Peptide bond
Phosphodiester linkage
Ester bond
None of the above
5) For a cell to receive food, it engulfs the surrounding fluid into vesicles to receive
nutrients. What is this process called?
a) Exocytosis
b) Phagocytosis
c) Receptor-mediated pinocytosis
d) Pinocytosis
e) Receptor-mediated endocytosis
6) A plant cell does all of the following except:
a) Contain a cell wall
b) Use plasmodesmata
c) Burst when placed in a hypotonic solution
d) Make glucose
e) Store nutrients in the central vacuole
7) Which of the following organelles are hypothesized to once be bacteria that were
incorporated into the cell
a) Lysosomes
b) Chloroplasts
c) Mitochondria
d) Peroxisomes
e) B and C
8) Which of the following are examples of enantiomes?
a) Ethane and Ethanol
b) R-Ibuprofen and S-Ibuprofen
c) L-glucose and D-glucose
d) Cis ethene and trans ethane
e) B and C
9) Which of the following is true about water in solution?
a) will donate a proton to an acidic solution
b) will donate a proton to a basic solution
c) will accept a proton from a basic solution
d) will completely neutralize an acid or base
e) none of the above
10) All of the following functional groups are hydrophilic except:
a) methyl
b) hydroxyl
c) phosphate
d) carboxyl
e) all of the above
11) You have applied a chemical to your windshield on your brand new expensive
car. This chemical causes water to form droplets when it hits your windshield. What
property of water is this chemical using?
a) Adhesion because the water is attracted to itself
b) Cohesion because the water is attracted to the windshield
c) Cohesion because the water is attracted to itself
d) Adhesion because the water is attracted to the windshield
e) Neither
12) Which of the following intramolecular bonds is the strongest?
a) covalent
b) valence repulsion
c) hydrogen
d) van der Waals
e) metallic
13) To form polymers, you
a) remove water
b) add water
14) What is the order from largest to smallest in atomic structure?
a) protons, atoms, compound
b) compound, protons, atom
c) protons, compound, atoms
d) compound, atoms, protons
e) atom, compound, protons
15) Which of the following numbers would you expect to be bigger?
a) mass number
b) atomic number
16) When you increase a solution by 1 pH unit, you increase the basicity by
a) a factor of 1
b) a factor of 10
c) a factor of 1/10
d) a factor of 1/100
e) no affect
17) Which of the following cannot be attributed to the properties of water?
a) cooler temperatures closer to bodies of water during the summer
b) the ability to dissolve NaCl in solution
c) ice floating on a body of water
d) Water forming droplets on a surface
e) all of the above
18) Which of the following is not a common atom in the human body?
a) O
b) C
c) N
d) K
e) P
19) Which of the following would you not expect to see in a prokaryotic cell?
a) plasma membrane
b) DNA
c) ribosomes
d) mitochondria
e) cytosol
20) Which of the following would require ATP to be used?
a) Movement of water into a cell when the cell has a lower water content than the
environment
b) Nonpolar small molecules entering the cell
c) Channel proteins carrying ions into the cell
d) Sodium being pumped out of the cell into the extracellular fluid with a greater
positive charge than within the cell.
e) Flow of glucose into an energy deprived cell
21) You have been given a compound in which you know has structural isomers.
What would be true of those isomers?
a) All would have the same properties
b) Would contain an asymmetric carbon
c) They would differ in arrangement around a double bond
d) They would have differing number of carbon but the same total elements to make
up the molecule
e) They would differ in branching
22) Which of the following would not be suspected to use channel transport?
a) hydrogen ions
b) sodium ions
c) amino acids
d) water
e) O2
23) The extracellular matrix is made up of
a) proteoglycans
b) cell walls
c) intermediate filaments
d) A and C
e) all of the above
24) Which of the following structures are unique for plant cells?
a) plasmodesmata
b) membrane proteins
c) lysosomes
d) centrioles
e) nucleolus
25) If the atomic number of an element is 8 and the mass number is 16, what are the
respective numbers of protons, neutrons, and electrons?
a) 8,16,8
b) 16,8,16
c) 8,8,8
d) 16,24,16
e) 16,16,16
26) Which of the following is not a characteristic of life?
a) Reproduction
b) Response to stimulus
c) Growth and development
d) Evolutionary adaptation
e) None of the above
27) Molecules that contain large amounts of carboxyl groups will be what in
solution.
a) Basic
b) Acidic
c) Neutral
d) Highly unreactive
e) High folding
28) If you are studying a carbohydrate, what kinds of bonds are you studying?
a) Ester linkages
b) Glycosidic linkages
c) Peptide bonds
d) Phosphoanhydride bonds
e) phosphodiester bonds
29) Which functional group is known for releasing a large amount of energy when
its bonds are broken?
a) Amino
b) Phosphate
c) Sulfhydryl
d) Hydroxyl
e) Carboxyl
30) Plants store glucose as _________, and animals store glucose as _________.
a) Starch, glycogen
b) Cellulose , starch
c) Glycogen, starch
d) Glycogen, cellulose
e) Starch, starch.
31) The secondary structure of proteins does not involve…
a) The amino acid chain.
b) Hydrogen bonding between the carboxyl and amino groups
c) alpha helices and beta sheets.
d) Hydrogen bonding between R group
e) An N-terminus and a C-terminus
32) Which cells are likely to have the most mitochondria?
a) Muscle cells in the legs of a rabbit.
b) Cells in the stem of a flower.
c) Non-dividing cells in the skin of your finger.
d) Non living cells in hair.
e) Bacteria cells growing on an agar plate.
33) Sodium and Lithium are two different elements, yet they react very similarly.
What is the best explanation for this.
a) They have the same number of electron shells.
b) They have similar atomic numbers.
c) They form isotopes with the same atomic mass.
d) They have the same number of outer shell electrons.
e) They have the same number of total electrons.
34) Ionic bonds are…
a) Shared electrons between two atoms of equal electronegativity.
b) Weak bonds that help stabilize protein structure.
c) Sharing electrons between two atoms of unequal electronegativity.
d) Attractions between ions of opposite charge.
e) none of the above
35) What causes the partial positive and partial negative charges of the water
molecule?
a) The high electronegativity of the Hydrogen atoms.
b) The high electronegativity of the Oxygen atoms.
c) The high electronegativity of the Water molecule.
d) The low electronegativity of the Oxygen atom.
e) Equal electronegativities of Oxygen and Hydrogen.
36) Which functional groups are in all amino acids? 6.
a) Carboxyl
b) Carbonyl
c) Amino
d) Both A and C
e) Both B and C
37) When you ingest certain large molecules, the cells lining the digestive tract take
them in. How are they most likely taken in?
a) Exocytosis
b) Endocytosis
c) Osmosis
d) Active Transport
e) Passive Transport
38) Can a prokaryote produce its own proteins?
a) It can because it contains DNA and ribosomes.
b) It can because the golgi apparatus of prokaryotes can perform the function of the
endoplasmic reticulum and assemble the proteins.
c) It can because dehydration reactions occur freely in the cytoplasm of the cell.
d) It can’t because there is no endoplasmic reticulum to produce the proteins.
e) It can’t because there is no evolutionary need for such small cells to have their
own proteins.
39) What type of molecule would most likely participate in simple diffusion?
a) Water
b) Large nonpolar molecules
c) Small nonpolar molecules
d) Large polar molecules
e) Small polar molecules
40) Molecules that repel contact with water are known as…
a) Hydrophobic
b) Hydrophillic
c) Hydrolytic
d) Hydrogenic
e) None of the above