Download Name Class Date Section: Regulation In the space provided, write

Name ______________________________ Class ___________________ Date __________________
Section: Regulation
In the space provided, write the letter of the description that best matches
each term.
_____ 1. cancer
a. a group of diseases caused by uncontrolled cell growth
_____ 2. tumor
b. a mass of cells that grow very fast and that lack a function
In the space provided, write the letter of the term or phrase that best answers
each question.
_____ 3. What causes healthy cells in a dish to stop dividing?
a. contact with other cells
c. Both (a) and (b)
b. contact with the side of the dish
d. Neither (a) nor (b)
_____ 4. Which are not types of signals cells use to regulate cell growth?
a. protein signals from within the cell
b. carbohydrate signals from within the cell
c. protein signals from nearby cells
d. signals related to the environment around the cell
_____ 5. What is a checkpoint in the cell cycle?
a. a feedback signal that can trigger or delay the cell cycle
b. a feedback signal that is sent to surrounding cells
c. an environmental signal that is sent to surrounding cells
d. an environmental signal that relates to cells growing in dishes
_____ 6. Which of these is not a main checkpoint in the cell cycle?
a. G1 checkpoint
b. G2 checkpoint
c. mitosis checkpoint
d. cytokinesis checkpoint
_____ 7. When does the cell check for any mistakes in the copied DNA?
a. G1 checkpoint
b. G2 checkpoint
c. mitosis checkpoint
d. cytokinesis checkpoint
_____ 8. Which kind of tumor has cells that spread to other parts of the body?
a. malignant tumor
c. Both (a) and (b)
b. benign tumor
d. Neither (a) nor (b)
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
28
Cell Growth and Division
Name ______________________________ Class ___________________ Date __________________
Section: Reproduction
In the space provided, write the letter of the term or phrase that best completes
each statement or best answers each question.
_____ 1. An advantage of sexual reproduction is that
a. many offspring are produced in a short time.
b. it increases genetic diversity.
c. production of gametes requires energy.
d. organisms remain stable in a changing environment.
_____ 2. Which of the following is not a type of asexual reproduction?
a. budding
c. binary fission
b. fragmentation
d. alternation of generations
_____ 3. Asexual reproduction results in
a. genetic diversity.
b. zygotes.
c. fertilization.
d. genetically identical offspring.
In the space provided, write the letter of the description that best matches each term.
_____ 4. fertilization
_____ 5. diploid
_____ 6. homologous
_____ 7. asexual reproduction
_____ 8. sexual reproduction
_____ 9. haploid
a. produces offspring having traits like
those of both parents, but not exactly
like either parent
b. produces identical offspring
c. having one set of chromosomes
d. having two sets of chromosomes
e. produces a diploid zygote
f. chromosomes have similar structure
and kinds of genes
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
29
Cell Growth and Division
Name ______________________________ Class ___________________ Date __________________
Section: Meiosis
In the space provided, write the letter of the term or phrase that best completes
each statement or best answers each question.
_____ 1. Crossing-over occurs during
a. prophase II.
b. fertilization.
c. prophase I.
d. metaphase II.
_____ 4. DNA replication occurs
a. after telophase I.
b. prior to prophase I.
c. in both meiosis I and meiosis II.
d. when the chromosomes align at the cell’s equator.
In the space provided, write the letter of the description that best matches each term.
_____ 6. meiosis
_____ 7. prophase I
_____ 8. crossing-over
_____ 9. telophase II
a. chromosomes become visible
c. results in four haploid cells
d. halves the number of chromosomes
e. results in exchange of chromatid portions
between homologous chromosomes
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
30
Cell Growth and Division