Biology 1 - The Life Sciences » 2019 » Module 2 Exam
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Question #1
Which of the following structures are found in animal cells but are lacking in plant cells?
A.
Mitochondria
B.
Lysosomes
C.
Ribosomes
D.
plasma membrane
E.
cell wall
Question #2
Which of the following structures are found in plant cells but are lacking in animal cells?
A.
central vacuole
B.
plasma membrane
C.
mitochondria
D.
golgi apparatus
Question #3
The primary structural component of a cell membrane is
A.
a phospholipid molecule
B.
a cholesterol molecule
C.
a protein molecule
D.
a sugar molecule attached to a protein
E.
an enzyme
Question #4
The bilayer of cell membranes allows lipids and small, nonpolar molecules to pass across membranes, but prohibits the passage of ions and polar molecules.
A.
FALSE
B.
TRUE
Question #5
Cell membranes are semipermeable, as water is not allowed to pass through them freely.
A.
FALSE
B.
TRUE
Question #6
Which of the following does not apply to the cell cytoskeleton?
A.
It helps to maintain overall cell organization.
B.
It contributes to movement within the cell as well to to the cell itself.
C.
It assists in the formation of protein molecules.
D.
It is used to change the overall shape of the cell.
Question #7
Which organelle is responsible for the synthesis of lipids?
A.
The nucleus
B.
Mitochondrion
C.
Rough endoplasmic reticulum
D.
Smooth endoplasmic reticulum
Question #8
The central vacuole of plant cells stores water only.
A.
TRUE
B.
FALSE
Question #9
Tay-Sachs disease is a neurological disorder in which a defective enzyme prohibits the breakdown of phospholipids called gangliosides. Enzymes that break down molecules in a cell are typically found in which organelle?
A.
endoplasmic reticulum
B.
mitochondria
C.
cytoplasm
D.
lysosomes
E.
Golgi apparatus
Question #10
You are working on a forensics team and collect cells from a crime scene. The cells have a cell wall made of cellulose. This sample most likely came from
A.
an archaean
B.
a bacterium
C.
a fungus
D.
a plant
E.
an animal
Question #11
A ball at the top of a hill is an example of______ and a ball rolling down the hill is an example of ______.
A.
exergonic reaction; endergonic reaction
B.
potential energy; kinetic energy
C.
noncompetitive inhibition; competitive inhibition
D.
kinetic energy; potential energy
Question #12
The Second Law of Thermodynamics is also known as
A.
The Law of Conservation of Energy
B.
The Law of Ecology
C.
The Law of Entropy
D.
None of the above
Question #13
Energy changes form within biological systems, but is never created nor destroyed.
A.
TRUE
B.
FALSE
Question #14
Entropy is
A.
disorder
B.
simplicity
C.
order
D.
complexity
Question #15
Oxidation-reduction reactions
A.
reduce the amount of oxygen in the cell.
B.
transfer protons from one molecule to another.
C.
are not used by living cells.
D.
transfer electrons from one molecule to another.
Question #16
The most important aspect of an enzyme that defines its ability to function is
A.
its molecular shape
B.
its size
C.
the number of covalent bonds its has
D.
its abundance in the cell
Question #17
Reduction means a loss of electrons from an atom or molecule
A.
TRUE
B.
FALSE
Question #18
The region of an enzyme that catalyzes reactions is called
A.
a reaction site
B.
a catalyst site
C.
an active site
D.
a binding pocket
Question #19
The energy currency of cells is
A.
glucose
B.
ADP
C.
NADP
D.
ATP
E.
NaCl
Question #20
Simple diffusion
A.
does not require energy
B.
requires energy
C.
utilizes proteins to move molecules across a membrane
D.
moves molecules against a concentration gradient
Question #21
Larger items can enter cells in vesicles through a process called exocytosis.
A.
TRUE
B.
FALSE
Question #22
Active transport uses energy and a transport protein to move a substance against a concentration gradient
A.
TRUE
B.
FALSE
Question #23
If the environment surrounding a cell has a lower concentration of solute than the cell
A.
the cell will die
B.
the environment is hypertonic to the cell.
C.
the cell will not experience a net gain or loss of water.
D.
the environment is isotonic to the cell.
E.
the environment is hypotonic to the cell.
Question #24
How many of the following organelles occur in your skin cells: mitochondria, ribosomes, nucleus, lysosomes, chloroplasts, vacuole, ER
A.
7
B.
6
C.
5
D.
4
E.
3
Question #25
Prokaryotic cells differ from eukaryotic cells in that they do not possess DNA.,,
A.
False
B.
True
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