Cellular Growth
Mitosis
Cell Cycle Regulation
Cancer
Random
100
Together, the G1 phase, S phase, and G2 phase are called ____________________.
interphase
100
True or false, The structure on a chromosome where sister chromatids attach is the centromere.
true
100
True or false, The cell cycle is divided into interphase and mitosis.
false, and cytokinesis
100
What is a tumor? a. an accumulation of cyclins b. a mass of cancer cells c. the rapidly dividing cells found at the site of a wound d. a defective p53 gene
b. a mass of cancer cells
100
Starting with one cell that underwent six divisions, how many cells would result a) 13 b) 32 c) 48 d) 64
d) 64
200
Cells spend most of their time in which phase? a. interphase c. cytokinesis b. prophase d. anaphase
interphase
200
During what phase, does the nuclear envelope start to disappear?
prophase
200
What happens during apoptosis, give an example used in class
programmed cell death, webbed finger skin disappears before birth
200
What are the substances and agents called that are known to cause cancer?
carcinogens
200
Which of the following occurs in telophase? a. chromosomes condense, nuclear envelope disappears, and spindle fibers form b. chromosomes line up c. chromosomes move to opposite poles d. chromosomes uncondenses back into chromatin cellular membrane begins to form
d.) chromosomes "relax"
300
A cells volume increases, what happens to the proportional amount of the surface area? a.) increases b.) decreases c.) stays the same d.) reaches its limit
b.) decreases
300
This figure illustrates which stage of mitosis? a. anaphase c. prophase b. metaphase d. telophase
metaphase
300
What are the two signaling molecules that help regulate normal cell cycle?
Cyclins (proteins) and Cyclin-dependent kinases (CDKs/ enzymes) bind together to monitor the cycle for errors. Act as cycle checkpoints (stop or start)
300
What is the difference between malignant and benign tumors?
answers vary
300
What are stem cells?
Stem cells are unspecialized cells that can develop into specialized cells under the right conditions.
400
What is the difference between mitosis and the cell cycle
cell cycle has interphase and cytokinesis
400
List the order of the four stages of Mitosis in the correct order.
Prophase, Metaphase, Anaphase, Telophase
400
Cancer cells can reproduce rapidly because they a. are smaller than normal cells. b. bypass interphase. c. undergo mitosis faster d. spend less time in interphase
d.) spend less time in interphase
400
How do cancer cells differ from normal cells?
Cancer cells do not respond to the signals that control the growth of normal cells. As a result, cancer cells form tumors and can spread throughout the body.
400
What is the difference between chromatin, chromatids, and chromosomes
Chromatin is uncondensed DNA, chromosomes are condensed DNA and chromatids are duplicated chromosomes that occur during mitosis
500
The main events of the cell cycle are labeled A, B, C, and D in Figure 10-2. Name these events. Then, briefly state what happens during each event. diagram on smartboard
A—G1 phase, cell growth; B—S phase, DNA replication; C—G2 phase, preparation for mitosis; D—M phase, cell division (mitosis and cytokinesis)
500
Plant cells produce a ________________, between the two forming nuclei during telophase. a. chromatids b. centrioles c. cell plate d. cytokinesis
c. cell plate
500
Cells A and F of Figure 9-6 show an early and a late stage of the same phase of mitosis. What phase is it?
prophase
500
How does cancer form?
Mutations to DNA that affects the sequencing and expression of genes
500
It is often said that normal cells change into cancerous cells frequently in our bodies. Which of the following explanations accounts for the relative rarity of cancer? a. The cancerous cells die on their own. b. The DNA repair system fixes the mutation that causes cancer. c. The cancer cells grow only very slowly at first. d. The cancerous cells are normally crowded out by normal cell growth.
b. The DNA repair system fixes the mutation that causes cancer.
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