Download Chapter 8: Cellular Transport and the Cell Cycle

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Chapter 8: Stem Cells and the Cell Cycle
1.
Which of these body cells needs to carry out mitosis at the highest rate?
a. Liver
c. Nerve
b. Skin
d. Bone
2. By the end of prophase, each of the following has occurred except:
a. Tighter coiling of the chromosomes
d. Lining up of chromosomes along the
b. Breaking down of the nuclear envelope
middle.
c. Disappearing of the nucleus
3. The longest phase of the cell cycle is _____.
a. Prophase
b. Interphase
c. Metaphase
d. Mitosis
4. A chromatid is attached to a spindle fiber by the _____.
a. Nucleus
b. Deep furrow
c. Centromere
d. Centriole
5. The causes of cancer may include which of the following?
a. Environmental influences
b. UV radiation
c. Viruses
d. All of the above
6. The phase of mitosis in which sister chromatids separate from each other is _____.
a. Prophase
c. Anaphase
b. Metaphase
d. Telophase
7. The phase of mitosis in which the nucleus disappears and chromatins shorten to chromosomes is _____.
a. Prophase
c. Anaphase
b. Metaphase
d. Telophase
8. The phase in which the cell starts to divide into two cells and those cells start acting independently of one
another is _____.
a. Prophase
c. Anaphase
b. Metaphase
d. Telophase
9. The phase where sister chromatids line up along the middle of the cell is _____.
a. Prophase
c. Anaphase
b. Metaphase
d. Telophase
10. Using figure 1, order the pictures from prophase to Telophase.
a. A, D, C, B
b. D, B, A, C
c. C, B, D, A
d. B, C, A, D
11. Using figure 1 and looking at picture C, what is the structure that pointer is pointing at?
a. Cell wall
c. Cell plate
b. Cleavage furrow
d. Plasma membrane
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12. Using figure 1 and looking at picture D, what is the structure that the pointer is pointing at?
a. Nucleus
c. Sister chromatids
b. Spindle fibers
d. Centromere
13. The uncontrolled division of cells is _____.
a. Mitosis
b. Normal
c. Cancer
d. Easy to correct
14. Cells duplicate their DNA during _____.
a. Metaphase
b. Prophase
c. Interphase
d. Telophase
15. A stem cell is _____.
a. A cell that has the ability to be any
type of cell it wants to be.
b. A normal cell found all over our
bodies.
c. Found only in the brain.
d. An imaginary cell.
16. Stem cells are found in a fetus six weeks or less and in adult bone marrow.
a. True
b. False
17. All cells have the ability to go through mitosis.
a. True
18. All cells go through mitosis at the same rate.
a. True
19. The nucleus is not visible during metaphase and anaphase.
a. True
b. False
b. False
b. False
20. In mitosis, the two double copies of the DNA attached to the spindle fibers are known as:
a. Nucleoli
c. Sister chromatids
b. Centrioles
d. Centromeres
21. The two copies of each chromosome that are the same size, same shape, and carry genes for the same
traits are called ___________________________ chromosomes.
A. maternal
C. heterozygous
B. paternal
D. homologous
22. Bacteria reproduce using ______________________.
A. mitosis
B. meiosis
C. binary fission
D. binary duplication
23. If a normal cell has 20 chromosomes, how many chromosomes will be present after mitosis has occurred?
a. 10
c. 30
b. 20
d. 40
24. If a normal cell has 20 chromosomes, how many chromosomes will be present after replication?
a. 10
c. 30
b. 20
d. 40
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25. In the Onion Root Tip lab, which area of the root tip was undergoing Mitosis at a greater rate?
a. The center of the onion root.
b. The tip of the onion root.
26-32 MATCHING: Match the vocab word with its definition:
_______ The log-shaped structures that appear next to the nucleus
during prophase to pull the chromosomes apart
A. CHROMATID
B. CENTRIOLE
C. CENTROMERE
D. CENTROSOME
E. SPINDLE
F. CHROMATIN
G. CHROMOSOME
_______ Framework of microtubules to which chromosomes attach
during cell division which guides them to the poles
_______ Constricted area in the middle of a chromosome that
that holds the two chromatids together
_______ DNA in the nucleus of a NON-dividing cell
______ Region where centrioles are located that helps organize the spindle
______ One of two identical arms that make up a chromosome
______ DNA in the nucleus of a DIVIDING cell
33-39 MATCH THE PHASE WITH WHAT HAPPENS:
You CAN use them more than once
S
G1
G2
G0
Mitosis (M)
Cytokinesis (C)
_______ Cells leave the cell cycle and stop dividing
_______ Division of chromosomes happens
_______ Division of cytoplasm happens
_______ Cell makes the molecules and organelles needed for cell division
_______ Made up of telophase, anaphase, prophase, metaphase
_______ Cell is reading the DNA code and “doing its job”
_______ Cell makes a copy of its DNA
40. Why does an animal cell form a cleavage furrow during cytokinesis while a plant cell forms a cell plate?
41. Why are scientists so eager to do research using embryonic stem cells rather than other types of less
controversial stem cells?
42. Name at least 3 specific diseases/disorders stem cells could potentially help cure.
43. Why are embryonic stem cells so controversial? Give 2 reasons.
44. Why is it best for cells to be small?
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Diagrams:
Figure 1