Practice Test - Miniunit Gamma
(1)
Which of these is a function of the nucleus:
a) controls reproduction
b) passes traits from one generation to another
c) controls activities within the cell
d) all of the above
e) only a and c
(2)
Double-membrane structure regulating the flow of material into and out of the nucleus.
a) nuclear membrane
b) nucleolus
c) nuclear pore
d) nucleoplasm
e) chromatin
(3)
The cell which is beginning to divide differs from the normal cell in that:
a) the nucleus appears as two
b) the chromatin appears as a fine network
c) the chromatin has been organized into chromosomes
d) the chromosomes have disappeared to form the chromatin network
e) all of the above
(4)
Which of the following statements is not true about the term "gene"?
a) located on DNA molecules
b) determine hereditary traits
c) transcribes mRNA
d) found inside the ribosomes
(6)
Which of the following statements is not true about the process mitosis?
a) occurs in both plant and animal cells
b) results in two cells being formed
c) new cells formed will have one half the number of chromosomes as the parent cell
d) involves the formation of chromosomes
(9)
Examine the figure below. Identify the red structures.
mitosis
a) centrioles being pulled to opposite poles
b) chromosomes condensing into chromatin
c) homologous chromosomes being pulled to opposite poles
d) identical sister chromatids being pulled to opposite poles
(9)
The DNA in the nucleus is in the form of chromosomes during early interphase.
a) true
b) false
Questions 8-11 Pick the correct term.
(12)
Chromosomes line up along the equator.
a) metaphase
b) telophase
c) prophase
d) anaphase
(9)
Chromosomes are pulled to opposite poles.
a) metaphase
b) telophase
c) prophase
d) anaphase
(12)
Chromosomes break apart to form chromatin.
a) metaphase
b) telophase
c) prophase
d) anaphase
(8)
Nuclear membrane and nucleoli break apart and disappear.
a) metaphase
b) telophase
c) prophase
d) anaphase
(13)
The two new cells formed after mitosis were discovered to contain 32 chromosomes each. How many chromosomes were there in the original parent cell?
a) 16
b) 32
c) 64
d) 96
(7)
Nucleoli and nuclear membrane disappear during the anaphase stage of the cell cycle.
a) true
b) false
(15)
Structure formed by the inward pinching of the animal cell membrane following mitosis:
a) cell plate
d) centriole
b) aster
e) cleavage furrow
e) cytokinesis
(16)
Which of the following does not pertain to the centriole?
a) a cylinder arrangement of nine double protein fibers 9 (2) + 0 or 9 (3) + 0
b) migrate to opposite poles
c) organizing centers for spindle fibers
d) act as poles toward which chromosomes are guided by spindle fiber
e) induces the formation of chromatin
(28)
Spermatogenesis and oogenesis represents which type of cell division?
a) meiosis
b) mitosis
17 - 20 - Pick the correct term.
(23)
Cells which contain chromosomes in pairs.
a) zygote
b) haploid
c) diploid
d) fertilization
(21)
Cell formed after the union of two haploid cells.
a) zygote
b) haploid
c) diploid
d) fertilization
(23)
Cells which contain only one of each chromosome pair.
a) zygote
b) haploid
c) diploid
d) fertilization
(19)
Haploid (Monoploid) cells are formed by mitosis.
a) true
b) false
(30)
A normal female has 46 chromosomes in her body cells. In the ovaries the oogonium undergo meiosis producing the egg cell or ovum. How many chromosomes are present in the egg cell?
a) 23
b) 46
c) 92
d) 12
e) none of these
(22)
Examine the figure below. Which of the statements below is correct.
a) The two cells at the right are diploid.
b) Sister chromatids were pulled apart to form the two cells at the right.
c) This stage prior to this stage is Metaphase I.
d) The chromosomes in the cells to the right are not present in homologous pair.
(27)
Diploid cell resulting from the sexual union of two reproductive cells:
a) gametes
b) zygote
c) heterogametes
d) isogamete
(27)
Reproductive cells which look alike so one cannot tell whether it is from a male or female organism:
a) gametes
b) zygote
c) heterogametes
d) isogamete
(28)
Which of the following cells are diploid during spermatogenesis?
a) spermatid
b) spermatognium
c) sperm
d) secondary spermatocyte
(29)
Which of the following cells is diploid?
a) ovum
b) oogonium
c) egg
d) polar body
(31)
Which of the following is not part of the male reproductive system in humans:
a) testes
b) bladder
c) penis
d) prostate
e) seminal vesicle
(32)
Which structure in the human sperm contains hydrolytic digesting enzymes?
a) tail (flagella)
b) nucleus
c) head
d) acrosome
(33)
Hormone secreted in the testes which stimulates sperm production:
a) testosterone
b) LH
c) FSH
(34)
Hormone from the pituitary stimulating growth of ovarian follicle and the release of the ovum:
a) FSH
b) LH
c) estrogen
d) progesterone
(13)
Corn cells contain 20 chromosomes. How many chromatids are present during metaphase?
a) 10
b) 20
c) 30
d) 40
(29)
The correct sequence of oogenesis is:
a) oogonium, primary oocyte, secondary oocyte, ootid egg
b) primary oocyte, secondary oocyte, oogonium ootid egg
c) oogonium, ootid, primary oocyte, secondary oocyte egg
d) ootid, oogonium, primary oocyte, secondary oocyte egg
(26)
Homologous chromosomes are attracted to one another during Prophase I of meiosis. This is called:
a) synapsis
b) tetrad
c) crossing over
d) alleles
(7)
Identify that stage of the cell cycle where DNA duplicates.
a) G-1
b) M
c) telophase
d) G-2
e) S
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Last modified October 29, 1997.