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WorksheetsGENH Chp. 2 Review
Total questions: 50
Worksheet time: 27mins
Name
Class
Date
1.
There is a balance between cell division and meiosis.
a)
true
b)
false
2.
Unspecialized cells are called:
a)
necrotic cells.
b)
apoptotic cells.
c)
cytokinins.
d)
caspases.
e)
stem cells.
3.
Archaea and Bacteria are groups of organisms that are:
a)
eukaryotes.
b)
prokaryotes.
4.
Prokaryotic cells have:
a)
no membrane.
b)
no DNA.
c)
no gene sequencing.
d)
no nucleus.
e)
None of the answers are correct.
5.
Proteins that facilitate biochemical reactions:
a)
nucleic acids.
b)
enzymes.
c)
cytokinins.
d)
peroxisomes.
e)
caspases.
6.
Molecules that store and transmit genetic information:
a)
nucleic acids.
b)
enzymes
c)
cytokinins
d)
peroxisomes
e)
caspases.
7.
Molecules that form the basis of hormones, provide insulation, and store energy:
a)
lipids.
b)
proteins.
c)
carbohydrates.
d)
nucleic acids.
e)
enzymes.
8.
Molecules that participate in blood clotting, nerve transmission, and muscle contraction:
a)
lipids.
b)
proteins.
c)
carbohydrates.
d)
nucleic acids.
e)
enzymes.
9.
The term for the two-layer thick plasma membrane:
a)
cell membrane.
b)
phospholipids layer.
c)
phospholipids bilayer.
d)
cell envelope.
e)
none of these.
10.
Act as two-way door that allow water solutions to pass through the hydrophobic layer of the plasma membrane:
a)
transport proteins
b)
carrier proteins
c)
ligands
d)
receptors
11.
Proteins in the plasma membrane that determine which materials will pass through or not:
a)
transport proteins
b)
carrier proteins
c)
ligands
d)
receptors
12.
Bonding molecules on the plasma membrane:
a)
transport proteins
b)
carrier proteins
c)
ligands
d)
receptors
13.
Molecules extending from the plasma membrane that hold other molecules outside the cell:
a)
transport proteins
b)
carrier proteins
c)
ligands
d)
receptors
14.
The phosphate ends of a phospholipid are:
a)
hydrophilic.
b)
hydrophobic.
15.
The cytoskeleton can change during a cell's lifespan:
a)
true
b)
false
16.
The most narrow of the components of the cytoskeleton:
a)
microtubules.
b)
microfilaments.
c)
intermediate filaments.
17.
Components of the cytoskeleton that anchor cells together:
a)
microtubules.
b)
microfilaments.
c)
intermediate filaments.
18.
Components of the cytoskeleton that are abundant in skin cells and other actively dividing cells:
a)
microtubules.
b)
microfilaments.
c)
intermediate filaments.
19.
Body cells:
a)
gametes
b)
somatic cells
20.
Cell self-destruction:
a)
apoptosis
b)
necrosis
c)
mitosis
d)
cellular adhesion
e)
signal transduction
21.
Sequencing of interactions among proteins that join cells:
a)
apoptosis
b)
necrosis
c)
mitosis
d)
cellular adhesion
e)
signal transduction
22.
A genetically controlled process in which the plasma membrane conveys a message from a stimulus to the interior of the cell:
a)
apoptosis
b)
necrosis
c)
mitosis
d)
cellular adhesion
e)
signal transduction
23.
Death to a cell by disease or an injury:
a)
apoptosis
b)
necrosis
c)
mitosis
d)
cellular adhesion
e)
signal transduction
24.
Tips of the chromosome:
a)
centrioles
b)
centromeres
c)
telomeres
25.
Cell division:
a)
apoptosis
b)
necrosis
c)
mitosis
d)
cellular adhesion
e)
signal transduction
26.
Mitosis and apoptosis do not need to be synchronized. A. Ture B.
a)
true
b)
false
27.
During apoptosis, the organelle that is destroyed first is the:
a)
nucleus.
b)
mitochondria.
c)
plasma membrane.
d)
nucleolus.
e)
ER.
28.
Apoptosis takes approximately:
a)
12-24 hours.
b)
20-30 minutes.
c)
an hour.
29.
Bulges of a dying cell:
a)
caspases
b)
cytokinins
c)
cyclins
d)
blebs
30.
During the cell cycle, ___________ ensure proper division and mitotic events are occurring in the correct sequence.
a)
cyclins
b)
CDKs
c)
checkpoints
d)
telomeres
31.
Most cells divide 40-60 times.
a)
true
b)
false
32.
Chromosomes lengthen with each cell division.
a)
true
b)
false
33.
The cell cycle is a series of events a cell undergoes as it prepares to
a)
divide.
b)
die.
c)
adhere to another cell.
d)
pass along a signal.
34.
DNA replicates during the _____ phase of the cell cycle.
a)
G1
b)
G2
c)
G3
d)
S
35.
The order of events in the cell cycle is
a)
S to G1 to G2 to mitosis.
b)
Mitosis to G1 to G2 to S.
c)
G1 to G2 to S to mitosis.
d)
G1 to S to G2 to mitosis.
36.
Chromosomes coil tightly around chromosomal proteins and condense during
a)
prophase.
b)
metaphase.
c)
anaphase.
d)
telophase.
37.
Cells contain twice the normal number of independent chromosomes briefly during
a)
prophase.
b)
metaphase.
c)
anaphase.
d)
telophase.
38.
During S phase, replicated chromosomes are joined at their
a)
centrosomes.
b)
centromeres.
c)
middlemeres.
d)
telomeres.
39.
The part of a chromosome that shortens with each cell division, functioning as a "clock," is the
a)
centromere.
b)
centrosome.
c)
centriole.
d)
telomere.
40.
Factors that control how often a cell divides include
a)
telomere lengths, hormonal signals, crowding, and growth factors.
b)
which chromosomes are active and which are not.
c)
the activity level of the person, diet, and environmental exposures.
d)
where chromosomes are located within the nucleus.
41.
During apoptosis, caspases
a)
activate enzymes that cut DNA into same-sized pieces.
b)
cause mitochondria to replicate their DNA.
c)
alter the cell surface so that viruses can more easily enter.
d)
remove introns from DNA.
42.
Apoptosis is a form of
a)
programmed cell death that is a normal part of development.
b)
programmed cell division that is a normal part of development.
c)
cellular duplication.
d)
cellular adhesion.
43.
Based on the composition of the plasma membrane, how do you predict a protein with one section of hydrophobic amino acids and one section of hydrophilic amino acids would be situated in the membrane?
a)
The hydrophobic portion of the protein could embed in the membrane, and the hydrophilic portion could extend into the cell.
b)
Both the hydrophobic and hydrophilic portions of the protein could embed in the membrane.
c)
This protein could not be found in the membrane.
d)
The hydrophilic portion of the protein could embed in the membrane, and the hydrophobic portion could extend into the cell.
44.
You are working in a lab and you make a version of the survivin protein that is "always on" and always present throughout the cell cycle. What do you predict the outcome will be?
a)
The cells carrying this protein will all immediately undergo apoptosis.
b)
The cells carrying this protein will continue to go through the cell cycle over and over.
c)
The cells will exit the cell cycle and enter G0.
d)
The cells will continue to go through the cell cycle until they reach the DNA damage checkpoint, and then the cycle will be halted.
45.
A cell lacking which type of proteins would be most likely to activate the spindle assembly checkpoint in mitosis?
a)
Tubulin
b)
Actin
c)
The various protein dimers found in intermediate filaments
d)
Gigaxonin
46.
If a cell was lacking centrosomes, what would be the result in the cell cycle?
a)
The cell would likely stop the cell cycle at the spindle assembly checkpoint.
b)
The cell would likely stop the cell cycle at the apoptosis checkpoint.
c)
The cell would likely stop the cell cycle at the DNA damage checkpoint.
d)
The cell would enter G0.
47.
If "death receptors" on the cell membrane were unable to bind to their signaling molecules, what would be the result?
a)
Apoptosis would occur immediately.
b)
Apoptosis would be unable to occur.
c)
Telomeres would shorten very quickly.
d)
Telomeres would be extended.
48.
Brefeldin A is a drug that prevents vesicle formation and transport between the rough ER and the Golgi apparatus. In the lab, you treat cells with brefeldin A. Which result do you expect?
a)
All proteins will be processed incorrectly.
b)
Secreted proteins will be processed incorrectly.
c)
Cytoplasmic proteins will be processed incorrectly.
d)
All proteins in the cell will be degraded.
49.
Select the area of the chart that represents CELL DIVISION (mitosis and cytokinesis)
A
B
50.
Which section of the cell cycle could be labeled as interphase?
A
B
C
D
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