which statement provides the best description of the interphase portion of the cell cycle?
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Bio Quiz 1
16cards Biology
Introduction To Biology
Nucleoli are present during _____
interphase
Cytokinesis often, but not always, accompanies _____
telophase
Chromosomes become visible during _____.
prophase
Centromeres divide and sister chromatids become full-fledged chromosomes during _____.
anaphase
Spindle fibers attach to kinetochores during __
prometaphase
During prophase a homologous pair of chromosomes consists of _____.
two chromosomes and four chromatids
During _____ both the contents of the nucleus and the cytoplasm are divided.
the mitotic phase
During _____ the cell grows and replicates both its organelles and its chromosomes
interphase
Which of the following is true of kinetochores?
They are sites at which microtubules attach to chromosomes.
In some organisms, such as certain fungi and algae, cells undergo the cell cycle repeatedly without subsequently undergoing cytokinesis. What would result from this?
large cells containing many nuclei
Which of the following correctly matches a phase of the cell cycle with its description?
G1: follows cell division
Which of the following is found in binary fission but not in mitosis?
Duplicated chromosomes attach to the plasma membrane.
Cytochalasin B is a chemical that disrupts microfilament formation. How would this interfere with cell division?
cleavage
If a eukaryotic cell is in the G1 phase of the cell cycle, which statement about the cell’s chromosomes must be correct?
Each chromosome is made of a complex of DNA and associated proteins.
Which statement provides the best description of the interphase portion of the cell cycle?
During interphase, a cell is metabolically active.
The cell cycle control systems of cancer cells differ from those of normal cells. Select the best explanation for this fact.
Genetic changes alter the function of the cancer cell’s protein products.
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BIOLOGY: Campbell's Chapter 12: Cell Cycle Flashcards
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small body single color chromosomes same to produce
without, lack of, not
self both, double
Click card to see definition 👆
micro- -some(or soma-) haplo- chrom- ploid homo-(or homeo-) -gen- a-(or an-) auto- diplo-
Click again to see term 👆
one between moving thread many two before cell end
segment, body section
Click card to see definition 👆
uni- inter- kin-(or kinet-) mito multi- bi- pro- -cyte(or cyto) telo- -mere
Click again to see term 👆
1/42 Created by sidney_jipp
Terms in this set (42)
small body single color chromosomes same to produce
without, lack of, not
self both, double micro- -some(or soma-) haplo- chrom- ploid homo-(or homeo-) -gen- a-(or an-) auto- diplo- one between moving thread many two before cell end
segment, body section
uni- inter- kin-(or kinet-) mito multi- bi- pro- -cyte(or cyto) telo- -mere
During _____ both the contents of the nucleus and the cytoplasm are divided.
G2 S mitosis G1 the mitotic phase the mitotic phase
During _____ the cell grows and replicates both its organelles and its chromosomes.
cytokinesis G1 S interphase mitosis interphase
Nucleoli are present during _____.
prophase anaphase prometaphase metaphase interphase interphase
Cytokinesis often, but not always, accompanies _____.
anaphase telophase prometaphase metaphase interphase telophase
Chromosomes become visible during _____.
metaphase prophase prometaphase anaphase interphase prophase
Centromeres divide and sister chromatids become full-fledged chromosomes during _____.
anaphase interphase prometaphase metaphase telophase anaphase
Spindle fibers attach to kinetochores during _____.
telophase anaphase prometaphase interphase metaphase prometaphase
During prophase a pair of chromosomes consists of _____.
four chromosomes and two chromatids
two chromosomes and four chromatids
two chromosomes and two chromatids
one chromosome and four chromatids
one chromosome and two chromatids
two chromosomes and four chromatids
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Chapter 12
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Chapter 12- The Cell Cycle A & B Flashcards
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Which of the following statements are true of cytokinesis in plant cells? Select the two that apply.
Vesicles from the Golgi apparatus move along microtubules, coalesce at the plane of cell division, and form a cell plate.
The cell plate consists of the plasma membrane and cell wall that will eventually separate the two daughter cells.
Nucleoli are present during _____.
interphase
Cytokinesis often, but not always, accompanies _____.
telophase
Chromosomes become visible during _____.
Prophase
Centromeres divide and sister chromatids become full-fledged chromosomes during _____.
anaphase note: During anaphase, sister chromatids separate and daughter chromosomes migrate to opposite poles.
Spindle fibers attach to kinetochores during _____.
prometaphase
Click on the art to see an animation. This animation illustrates the events of _____.
anaphase
Click on the art to see an animation. This animation illustrates the events of _____.
cytokinesis as it occurs in animal cells
During prophase a homologous pair of chromosomes consists of _____.
two chromosomes and four chromatids
Which of these phases encompasses all of the stages of mitosis?
E
During _____ both the contents of the nucleus and the cytoplasm are divided.
the mitotic phase
During _____ the cell grows and replicates both its organelles and its chromosomes.
interphase
Why do some species employ both mitosis and meiosis, whereas other species use only mitosis?
They need both if they are producing animal gametes.
A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. How many chromatids does it contain?
92
Why is it difficult to observe individual chromosomes with a light microscope during interphase?
They have uncoiled to form long, thin strands.
Starting with a fertilized egg (zygote), a series of five cell divisions would produce an early embryo with how many cells?
32
Which of the following is true of kinetochores?
They are sites at which microtubules attach to chromosomes.
Which of the following correctly matches a phase of the cell cycle with its description?
G1: follows cell division
In some organisms, such as certain fungi and algae, cells undergo the cell cycle repeatedly without subsequently undergoing cytokinesis. What would result from this?
large cells containing many nuclei
Which of the following is found in binary fission but not in mitosis?
Duplicated chromosomes attach to the plasma membrane.
Cytochalasin B is a chemical that disrupts microfilament formation. How would this interfere with cell division?
cleavage
Through a microscope, you can see a cell plate beginning to develop across the middle of a cell and nuclei forming on either side of the cell plate. This cell is most likely
a plant cell in the process of cytokinesis.
Which of these is NOT a carcinogen?
UV light fat testosterone cigarette smoke
all of the above are carcinogens
_____ is a carcinogen that promotes colon cancer.
fat
Which of the following is a function of the S phase in the cell cycle?
The synthesis of sister chromatids
The copying of chromosomes occurs during which of the following phases of the cell cycle?
S phase
For the first several divisions of early frog embryos, cells proceed directly from the M phase to the S phase and back to M without gaps. Which of the following is likely to be true about dividing cells in early frog embryos?
The cells get smaller with each generation.
True or false? The M phase is characterized by the replication and division of a cell's chromosomes.
False
If an organism normally has 34 chromosomes, how many molecules of DNA should there be in the G1 phase of the cell cycle?
34
Which of the following events would cause the cell cycle to arrest?
Poor nutrient conditions
Cells will usually divide if they receive the proper signal at a checkpoint in which phase of the cell cycle?
G1
Which of the following is true of benign tumors, but not malignant tumors?
They remain confined to their original site
Prior to this new technique, how were mice given cancerous tumors?
The tumors were implanted under the skin.
You are an oncologist. A patient presents with advanced prostate cancer and you follow standard protocol. What do you do?
The patient is treated with chemical castration.
You are an endocrinologist studying new treatments for prostate cancer. You have a patient with an unusually large level of dihydrotestosterone. Which of the following is true?
Your patient's cancer has become resistant to the standard treatment.
Which of the following is true regarding prostate cancer cells?
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