BIO 351 Module 2 Test Meiosis and Fertilization 2026 |
Most Tested Questions & Verified Answers | Latest Update |
Graded A+
1. Describe the role of the placenta in mammalian embryonic development
compared to structures in avian embryos.
The placenta is responsible for hormone production in mammals, while
avian embryos do not have hormonal regulation.
The placenta is involved in gas exchange in mammals, while avian
embryos use lungs for respiration.
The placenta provides nutrients and waste exchange for the
mammalian embryo, while avian embryos rely on the yolk for
nourishment.
The placenta serves as a protective barrier in mammals, whereas avian
embryos are protected by the eggshell.
2. Metaphase 2 block is released after
hybridization
sperm egg fusion
spermatid formation
Spermatogonium formation
3. Describe the significance of synapsis in the process of meiosis.
Synapsis is a stage in the development of sperm cells.
Synapsis allows homologous chromosomes to pair and exchange
genetic material, which increases genetic diversity.
Synapsis is the formation of the placenta during embryogenesis.
Synapsis is the process of fertilization that occurs in the ovaries.
,4. If a mutation affects the development of the placenta in a mammalian
embryo, what potential consequences could arise during pregnancy?
Impaired nutrient and waste exchange
Increased yolk absorption
Improved embryonic protection
Enhanced gas exchange
5. During a menstrual cycle, a midcycle surge of from the triggers
ovulation
LH; pituitary
estrogen; follicle cell
FHS; pituitary
progesterone; egg
6. Describe the role of protamines in the context of spermatozoa nuclei and
transcription.
Protamines are involved in the fertilization process.
Histones are retained in spermatozoa nuclei to facilitate transcription.
Protamines enhance transcription in spermatozoa nuclei.
Protamines replace histones in spermatozoa nuclei, leading to
transcriptional silence.
7. If a drug were to inhibit the release of the metaphase II block in oocytes,
what would be the most immediate effect on fertilization?
Fertilization would be unsuccessful.
Spermatogenesis would be enhanced.
, Embryonic development would proceed normally.
Oocytes would complete meiosis without fertilization.
8. The oogonia undergo division and are arrested in until
puberty
meiotic, prophase I
meiotic, metaphase II
meiosis, metaphase II
meiosis, prophase I
9. When an egg is fertilized, the male haploid genome enters, and maternal
pronuclei interact. What is the term for this process?
Synapse
Fusion
Syngamy
Meiosis
10. In the graph are the results of an experiment in which beads were coated in
bindin proteins (ERB1) from different species of sea urchins and mixed with
sperm. What do these data suggest?
, Bindin binds to eggs
Bindin is species specific
Beads bind equally as well as bindin to sperm
Bindin is not species specific
11. What is the name of the process that leads to the formation of the mesoderm
and endoderm during embryonic development?
cleavage
gastrulation
fertilization
neuralation
12. If a patient has a condition that prevents the secretion of GnRH, what would
be the expected outcome on their reproductive health?
Enhanced production of estrogen and progesterone.
Inhibition of folliculogenesis and potential infertility.
Increased folliculogenesis and enhanced fertility.
Most Tested Questions & Verified Answers | Latest Update |
Graded A+
1. Describe the role of the placenta in mammalian embryonic development
compared to structures in avian embryos.
The placenta is responsible for hormone production in mammals, while
avian embryos do not have hormonal regulation.
The placenta is involved in gas exchange in mammals, while avian
embryos use lungs for respiration.
The placenta provides nutrients and waste exchange for the
mammalian embryo, while avian embryos rely on the yolk for
nourishment.
The placenta serves as a protective barrier in mammals, whereas avian
embryos are protected by the eggshell.
2. Metaphase 2 block is released after
hybridization
sperm egg fusion
spermatid formation
Spermatogonium formation
3. Describe the significance of synapsis in the process of meiosis.
Synapsis is a stage in the development of sperm cells.
Synapsis allows homologous chromosomes to pair and exchange
genetic material, which increases genetic diversity.
Synapsis is the formation of the placenta during embryogenesis.
Synapsis is the process of fertilization that occurs in the ovaries.
,4. If a mutation affects the development of the placenta in a mammalian
embryo, what potential consequences could arise during pregnancy?
Impaired nutrient and waste exchange
Increased yolk absorption
Improved embryonic protection
Enhanced gas exchange
5. During a menstrual cycle, a midcycle surge of from the triggers
ovulation
LH; pituitary
estrogen; follicle cell
FHS; pituitary
progesterone; egg
6. Describe the role of protamines in the context of spermatozoa nuclei and
transcription.
Protamines are involved in the fertilization process.
Histones are retained in spermatozoa nuclei to facilitate transcription.
Protamines enhance transcription in spermatozoa nuclei.
Protamines replace histones in spermatozoa nuclei, leading to
transcriptional silence.
7. If a drug were to inhibit the release of the metaphase II block in oocytes,
what would be the most immediate effect on fertilization?
Fertilization would be unsuccessful.
Spermatogenesis would be enhanced.
, Embryonic development would proceed normally.
Oocytes would complete meiosis without fertilization.
8. The oogonia undergo division and are arrested in until
puberty
meiotic, prophase I
meiotic, metaphase II
meiosis, metaphase II
meiosis, prophase I
9. When an egg is fertilized, the male haploid genome enters, and maternal
pronuclei interact. What is the term for this process?
Synapse
Fusion
Syngamy
Meiosis
10. In the graph are the results of an experiment in which beads were coated in
bindin proteins (ERB1) from different species of sea urchins and mixed with
sperm. What do these data suggest?
, Bindin binds to eggs
Bindin is species specific
Beads bind equally as well as bindin to sperm
Bindin is not species specific
11. What is the name of the process that leads to the formation of the mesoderm
and endoderm during embryonic development?
cleavage
gastrulation
fertilization
neuralation
12. If a patient has a condition that prevents the secretion of GnRH, what would
be the expected outcome on their reproductive health?
Enhanced production of estrogen and progesterone.
Inhibition of folliculogenesis and potential infertility.
Increased folliculogenesis and enhanced fertility.
