BSC 116 CH 46 HW EXAM QUESTIONS AND
ANSWERS 100% VERIFIED
True or false? Humans form gametes by a process called gametogenesis.
-True
-False - ANSWER True (Humans form gametes by gametogenesis)
What role do germ cells play in gametogenesis?
-They produce gametes
-They produce cells that divide by mitosis to form gametes.
-They produce cells that divide by mitosis and then undergo meiosis to form gametes.
They produce cells that undergo meiosis and develop into gametes - ANSWER They
produce cells that divide by mitosis and then undergo meiosis to form gametes (The
cells produced by mitosis then undergo meiosis to form gametes.)
What products are formed when a diploid cell undergoes meiosis?
-4 haploid cells
-4 diploid cells
-2 diploid cells
-2 haploid cells - ANSWER 4 haploid cells (Four haploid cells are formed when a diploid
cell undergoes meiosis.)
Which of the following statements about oogenesis in humans is true?
-Oogonia can reproduce mitotically within an adult female ovary to produce more
oogonia, which differentiate into primary oocytes
-The ooctye released from the ovary during ovulation is fully mature.
-Oogenesis takes place within the oviduct
-Beginning at puberty, a primary oocyte completes its first meiotic division to form a
secondary oocyte and a polar body approximately every month.
1Beginning at puberty, a primary oocyte completes its first meiotic division to form a
secondary oocyte and a polar body approximately every month. (This secondary oocyte
is released into the oviduct during ovulation and then begins meiosis II, which is not
complete unless the oocyte is fertilized by a sperm cell.) - ANSWER
, Which diploid cells are produced by an embryonic germ cell?
- Spermatid
-Ovum
-Spermatogonia
-Polar body - ANSWER Spermatogonia (Spermatogonia are male diploid cells that are
produced by embryonic germ cells.)
True or false? The production of sperm begins at puberty when spermatogonia undergo
meiosis I to form primary spermatocytes, which then undergo meiosis II to form
secondary spermatocytes. These secondary spermatocytes go on to form spermatids,
which mature into sperm cells.
-True
-False - ANSWER False (Spermatogonia divide by mitosis and differentiate into primary
spermatocytes. Starting at puberty, hormones stimulate the primary spermatocytes to
undergo meiosis I to form secondary spermatocytes, which then undergo meiosis II to
form spermatids.)
How does spermatogenesis differ from oogenesis?
-Diploid cells give rise to four functional gametes in spermatogenesis
-Gametes are produced by meiosis in spermatogenesis.
-Production of the cells that will mature into gametes is complete by birth in
spermatogenesis
-Gamete maturation occurs after fertilization in spermatogenesis - ANSWER Diploid
cells give rise to four functional gametes in spermatogenesis (Spermatogenesis results
in the production of four sperm cells, whereas oogenesis only produces one ovum.)
A fertilized egg usually implants itself and develops in the _____.
-Uterus
-Ovary
-Oviduct
-Abdominal cavity
-None of these - ANSWER Uterus (The uterus is the usual site of the implantation and
development of the fertilized egg)
A rapid increase in the _____ level stimulates ovulation.
ANSWERS 100% VERIFIED
True or false? Humans form gametes by a process called gametogenesis.
-True
-False - ANSWER True (Humans form gametes by gametogenesis)
What role do germ cells play in gametogenesis?
-They produce gametes
-They produce cells that divide by mitosis to form gametes.
-They produce cells that divide by mitosis and then undergo meiosis to form gametes.
They produce cells that undergo meiosis and develop into gametes - ANSWER They
produce cells that divide by mitosis and then undergo meiosis to form gametes (The
cells produced by mitosis then undergo meiosis to form gametes.)
What products are formed when a diploid cell undergoes meiosis?
-4 haploid cells
-4 diploid cells
-2 diploid cells
-2 haploid cells - ANSWER 4 haploid cells (Four haploid cells are formed when a diploid
cell undergoes meiosis.)
Which of the following statements about oogenesis in humans is true?
-Oogonia can reproduce mitotically within an adult female ovary to produce more
oogonia, which differentiate into primary oocytes
-The ooctye released from the ovary during ovulation is fully mature.
-Oogenesis takes place within the oviduct
-Beginning at puberty, a primary oocyte completes its first meiotic division to form a
secondary oocyte and a polar body approximately every month.
1Beginning at puberty, a primary oocyte completes its first meiotic division to form a
secondary oocyte and a polar body approximately every month. (This secondary oocyte
is released into the oviduct during ovulation and then begins meiosis II, which is not
complete unless the oocyte is fertilized by a sperm cell.) - ANSWER
, Which diploid cells are produced by an embryonic germ cell?
- Spermatid
-Ovum
-Spermatogonia
-Polar body - ANSWER Spermatogonia (Spermatogonia are male diploid cells that are
produced by embryonic germ cells.)
True or false? The production of sperm begins at puberty when spermatogonia undergo
meiosis I to form primary spermatocytes, which then undergo meiosis II to form
secondary spermatocytes. These secondary spermatocytes go on to form spermatids,
which mature into sperm cells.
-True
-False - ANSWER False (Spermatogonia divide by mitosis and differentiate into primary
spermatocytes. Starting at puberty, hormones stimulate the primary spermatocytes to
undergo meiosis I to form secondary spermatocytes, which then undergo meiosis II to
form spermatids.)
How does spermatogenesis differ from oogenesis?
-Diploid cells give rise to four functional gametes in spermatogenesis
-Gametes are produced by meiosis in spermatogenesis.
-Production of the cells that will mature into gametes is complete by birth in
spermatogenesis
-Gamete maturation occurs after fertilization in spermatogenesis - ANSWER Diploid
cells give rise to four functional gametes in spermatogenesis (Spermatogenesis results
in the production of four sperm cells, whereas oogenesis only produces one ovum.)
A fertilized egg usually implants itself and develops in the _____.
-Uterus
-Ovary
-Oviduct
-Abdominal cavity
-None of these - ANSWER Uterus (The uterus is the usual site of the implantation and
development of the fertilized egg)
A rapid increase in the _____ level stimulates ovulation.
