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Question
1 of 30 3.33/ 3.33 Points
This
figure shows the cell cycle. What does “D” represent?
A.Cytokinesis
B.M
C.G2
D.G1
E.Mitosis
Question
2 of 30 3.33/ 3.33 Points
During
which stage do homologous chromosomes move away from each other?
A.Metaphase
I
B.Prophase
C.Anaphase
I
D.Metaphase
II
E.Anaphase
II
Question
3 of 30 3.33/ 3.33 Points
In
the cell cycle the “S” stands for:
A.Sister
B.Synapsis
C.Synthesis
D.Somatic
E.Sexual
Question
4 of 30 3.33/ 3.33 Points
In
plants, cytokinesis occurs with the formation of:
A.A
cleavage furrow in the cell wall
B.A
cleavage furrow in the nuclear membrane
C.Asters
and centrioles
D.
A cell plate
E.A
cleavage furrow in the cytoplasm
Question
5 of 30 0.0/ 3.33 Points
Molecules
which stimulate or inhibit cell division are referred to as:
A.Checkpoint
molecules
B.Contact
molecules
C.Signaling
molecules
D.Control
molecules
E.Transduction
molecules
Question
6 of 30 0.0/ 3.33 Points
If
you were a biologist studying how an RNA virus such as HIV can attack and
infect a human cell which contains DNA, you would be studying which of the
following enzymes?
A.RNA
transcriptase
B.Reverse
transcriptase
C.DNA
transcriptase
D.DNA
polymerase
E.RNA
polymerase
Question
7 of 30 0.0/ 3.33 Points
Based
on the work of Thomas Cech and Sidney Altman, why is RNA thought to have been
the first type of genetic material?
A.RNA
is made of nucleotides.
B.RNA
is single stranded and more simple than DNA.
C.RNA
contains uracil which was abundant in the early atmosphere.
D.RNA
can be both a substrate and an enzyme.
E.RNA
can be converted into DNA.
Question
8 of 30 0.0/ 3.33 Points
If
you were studying different diseases which are caused by viruses, which of the
following would you not be interested in studying?
A.Polio
B.AIDS
C.Smallpox
D.Cervical
cancer
E.Chlamydia
Question
9 of 30 3.33/ 3.33 Points
If
you were studying archaea which are found in an anaerobic environment such as
the mud found in swamps, you would be studying which of the following?
A.Methanogens
B.Halophiles
C.Thermoacidophiles
D.Cyanophiles
E.Lichens
Question
10 of 30 3.33/ 3.33 Points
When
a bacteriophage carries portions of bacterial DNA from one cell to another,
this is known as
A.endospore
formation.
B.binary
fission.
C.transduction.
D.conjugation.
E.transformation.
Question
11 of 30 0.0/ 3.33 Points
Which
of the following is characterized by chloroplasts containing pyrenoids?
A.Giardia
B.Euglena
C.Amoeb
a
D.Trichomonas
E.Trypanosoma
Question
12 of 30 0.0/ 3.33 Points
A
biologist is studying a multinucleated, cytoplasmic mass of cells which creeps
along, phagocytiizing plant material as it moves. Based on this information you
would conclude that he or she is studying which of the following?
A.Radiolarians
B.Water
molds
C.Plasmodial
slime molds
D.Amoeboids
E.Cellular
slime molds
Question
13 of 30 0.0/ 3.33 Points
Which
of the following terms would not be associated with the trypanosomes?
A.Heterotrophic
B.Unicellular
C.Autotrophic
D.Parasite
E.Flagella
Question
14 of 30 3.33/ 3.33 Points
A
biologist is studying protists that have a calcium carbonate shell with holes
so pseudopods can extend outward. Based on this information you would conclude
that he or she is studying which of the following?
A.Radiolarians
B.Diatoms
C.Foraminiferans
D.Apicomplexans
E.Amoeboids
Question
15 of 30 3.33/ 3.33 Points
Which
of the following is a sexually transmitted disease?
A.Giardia
B.Euglena
C.Trypanosoma
D.Paramecium
E.Trichchomonas
Question
16 of 30 3.33/ 3.33 Points
This
figure shows the alternation of generations. What does “a” represent?
A.Haploid
B.Sporophyte
C.Meiosis
D.Fertilization
E.Mitosis
Question
17 of 30 3.33/ 3.33 Points
Why
do some plants feed on insects and other small animals?
A.To
obtain water
B.To
obtain glucose
C.To
obtain carbohydrates
D.To
obtain oxygen
E.To
obtain nitrogen
Question
18 of 30 3.33/ 3.33 Points
Sphagnum
is a type of ________ that has nonliving cells that can absorb moisture and can
be used in gardening.
A.angiosperm
B.algae
C.moss
D.fern
E.gymnosperm
Question
19 of 30 3.33/ 3.33 Points
Which
part of the seed provides nourishment for the embryo?
A.The
endosperm
B.The
egg sac
C.The
seed coat
D.The
anther
E.The
ovary
Question
20 of 30 3.33/ 3.33 Points
In
the moss life cycle, the ______ generation is dominant.
A.Diploid
gametophyte
B.Haploid
gametophyte
C.Diploid
sporophyte
D.Triploid
sporophyte
E.Haploid
sporophyte
Question
21 of 30 3.33/ 3.33 Points
Calculating
the mitotic index gives a quantitative description of which of the following?
A.The
percentage of cells undergoing cytokinesis
B.The
percentage of cells in prophase
C.The
percentage of cells in interphase (i.e., resting phase)
D.The
percentage of dividing cells
Question
22 of 30 0.0/ 3.33 Points
To
calculate the mitotic index, you
A.add
up the number of cells in prophase, metaphase, anaphase and telophase and
divide that number by the total number of cells. Then multiply by 100.
B.add
up the number of cells in interphase and divide by the number of cells in all
the other phases of the cell cycle
C.subtract
the number of cells in the phases of mitosis from the number in interphase and
multiply by 100
D.calculate
the ration of cell in metaphase to those in prophase and then multiply by 100
Question
23 of 30 0.0/ 3.33 Points
Which
of the following does not occur during interphase?
A.DNA
replication
B.DNA
synthesis
C.Cell
division
D.None
of the above
Question
24 of 30 0.0/ 3.33 Points
Which
of the following does not occur during interphase?
A.DNA
is duplicated
B.Cell
is growing
C.Chromosomes
are visible
D.Organelles
and cell parts are made
Question
25 of 30 0.0/ 3.33 Points
In
mitosis the nuclear membrane disappears in ________ and reappears in
___________.
A.Metaphase,
prophase
B.Telophase,
anaphase
C.Anaphase,
metaphase
D.Prophase,
telophase
Question
26 of 30 0.0/ 3.33 Points
For
both normal and cancerous tissue the most prevalent phase of the cell cycle
was:
A.Interphase
B.Telophase
C.Prophase
D.Metaphase
Question
27 of 30 3.33/ 3.33 Points
Cancerous
cells are said to have a cell cycle that is “deregulated,” or different than a
normal cell cycle. What is the most evident sign of this deregulation?
A.Cancerous
cells divide more slowly than normal cells
B.Cancerous
cells spend more time in interphase
C.Cancerous
cells divide at the same rate as normal cells
D.Cancerous
cells divide more often