Question 1

Which is regarding the process of meiosis?

Accepted Answer

A)  Meiosis begins in a haploid state and concludes in the diploid condition.
B)  Meiosis forms haploid daughter cells from a diploid cell.
C)  Meiosis is represented by the notation: n  →\rightarrow→  2n.
D)  Most growth in the body is accomplished through meiosis.
E)  Meiosis results in identical sex cells. F) None of the above
G) B) and C)

Question 2

During embryonic development,a process called transverse folding creates the

Accepted Answer

A)  digestive and respiratory tracts.
B)  pelvic girdle and lower appendages.
C)  cylindrical trunk or torso region of the embryo.
D)  primary germ layers.
E)  neural tube.F) C) and D)
G) All of the above

Question 3

Following ovulation,how long does a secondary oocyte remain viable?

Accepted Answer

A)  For about 1-2 hours
B)  Approximately 12 hours
C)  For about 1 day
D)  Between 3-5 days
E)  For approximately 1 weekF) C) and D)
G) D) and E)

Question 4

What is the name given to substances that can cause birth defects or even death if exposure to them occurs during the embryonic period?

Accepted Answer

A)  Mutagens
B)  Antibiotics
C)  Fungicides
D)  Teratogens
E)  PesticidesF) B) and C)
G) A) and E)

Question 5

The acrosome

Accepted Answer

A)  carries the DNA.
B)  is responsible for movement of a spermatozoan.
C)  provides nourishment to the sperm.
D)  contains enzymes to break through protective layers surrounding the secondary oocyte.
E)  initiates growth of the sperm tail.F) A) and D)
G) A) and E)

Question 6

Neural crest cells give rise to

Accepted Answer

A)  melanocytes.
B)  the adrenal medulla.
C)  spinal ganglia
D)  skeletal and muscular components of the head.
E)  All of the choices are correct.F) A) and C)
G) B) and C)

Question 7

The human sex cells are called

Accepted Answer

A)  spores.
B)  genes.
C)  gonads.
D)  gametes.E) None of the above
F) All of the above

Question 8

Oogenesis is the formation of

Accepted Answer

A)  a new autosomal cell.
B)  a new somatosomal cell.
C)  a sperm.
D)  an egg.
E)  new ovaries.F) A) and E)
G) None of the above

Question 9

What would happen if capacitation did not occur?

Accepted Answer

A)  The egg (oogonium) would not mature.
B)  Ejaculation could not occur.
C)  The sperm could not reach the egg.
D)  Ovulation could not occur.
E)  Spermiogenesis would be impeded.F) C) and D)
G) C) and E)

Question 10

Although the early digestive system maintains contact with the embryonic yolk sac,it does not gain any nourishment from the sac.Instead,the yolk sac is involved with the formation of

Accepted Answer

A)  the heart and lungs.
B)  the reproductive organs.
C)  blood vessels and blood cells.
D)  bones.
E)  skeletal muscle tissue.F) A) and E)
G) B) and E)

Question 11

The implantation process begins by about day _____ following fertilization.

Accepted Answer

A)  2
B)  4
C)  7
D)  10
E)  12F) B) and C)
G) C) and D)

Question 12

The process of separating homologous chromosomes is termed

Accepted Answer

A)  replication.
B)  reduction division.
C)  nondisjunction.
D)  cleavage.
E)  differentiation.F) B) and C)
G) A) and E)

Question 13

This figure shows a cross-sectional view of the developing embryo.Which of the three primary germ layers does number 1 indicate?

Accepted Answer

A)  Ectoderm
B)  Mesoderm
C)  EndodermD) B) and C)
E) A) and C)

Question 14

The single cell resulting from fertilization is a(n)

Accepted Answer

A)  blastocyst.
B)  morula.
C)  trophoblast.
D)  embryoblast.
E)  zygote.F) C) and D)
G) B) and D)

Question 15

In the human,the diploid genetic condition occurs

Accepted Answer

A)  when the number of chromosomes equals the number of genes.
B)  when a cell has 23 pairs of chromosomes.
C)  when a cell has the (n) number of chromosomes.
D)  when a cell has 23 chromosomes.
E)  in each gamete just before fertilization.F) B) and E)
G) A) and C)

Question 16

Once implantation takes place the pre-embryo is divided into two general areas.Which of these two actually gives rise to the embryo?

Accepted Answer

A)  Trophoblast
B)  Cytotrophoblast
C)  Syncytiotrophoblast
D)  Embryoblast
E)  MorulaF) B) and C)
G) D) and E)

Question 17

From which primary germ layer is the heart derived?

Accepted Answer

A)  Ectoderm
B)  Mesoderm
C)  EndodermD) B) and C)
E) All of the above

Exam 3: Embryology

This figure shows a cross-sectional view of the developing embryo.Which of the three primary germ layers does number 1 indicate?

Correct Answer
verified

Once implantation takes place the pre-embryo is divided into two general areas.Which of these two actually gives rise to the embryo?

Correct Answer
verified

The process of separating homologous chromosomes is termed

Correct Answer
verified

In the human,the diploid genetic condition occurs

Correct Answer
verified

The human sex cells are called

Correct Answer
verified

What would happen if capacitation did not occur?

Correct Answer
verified

During embryonic development,a process called transverse folding creates the

Correct Answer
verified

The implantation process begins by about day _____ following fertilization.

Correct Answer
verified

What is the name given to substances that can cause birth defects or even death if exposure to them occurs during the embryonic period?

Correct Answer
verified

Although the early digestive system maintains contact with the embryonic yolk sac,it does not gain any nourishment from the sac.Instead,the yolk sac is involved with the formation of

Correct Answer
verified

The acrosome

Correct Answer
verified

Neural crest cells give rise to

Correct Answer
verified

The single cell resulting from fertilization is a(n)

Correct Answer
verified

Oogenesis is the formation of

Correct Answer
verified

From which primary germ layer is the heart derived?

Correct Answer
verified

Following ovulation,how long does a secondary oocyte remain viable?

Correct Answer
verified

Which is regarding the process of meiosis?

Correct Answer
verified

Exam 3: Embryology

This figure shows a cross-sectional view of the developing embryo.Which of the three primary germ layers does number 1 indicate?

Correct AnswerverifiedShow Answer

Once implantation takes place the pre-embryo is divided into two general areas.Which of these two actually gives rise to the embryo?

Correct AnswerverifiedShow Answer

The process of separating homologous chromosomes is termed

Correct AnswerverifiedShow Answer

In the human,the diploid genetic condition occurs

Correct AnswerverifiedShow Answer

The human sex cells are called

Correct AnswerverifiedShow Answer

What would happen if capacitation did not occur?

Correct AnswerverifiedShow Answer

During embryonic development,a process called transverse folding creates the

Correct AnswerverifiedShow Answer

The implantation process begins by about day _____ following fertilization.

Correct AnswerverifiedShow Answer

What is the name given to substances that can cause birth defects or even death if exposure to them occurs during the embryonic period?

Correct AnswerverifiedShow Answer

Although the early digestive system maintains contact with the embryonic yolk sac,it does not gain any nourishment from the sac.Instead,the yolk sac is involved with the formation of

Correct AnswerverifiedShow Answer

The acrosome

Correct AnswerverifiedShow Answer

Neural crest cells give rise to

Correct AnswerverifiedShow Answer

The single cell resulting from fertilization is a(n)

Correct AnswerverifiedShow Answer

Oogenesis is the formation of

Correct AnswerverifiedShow Answer

From which primary germ layer is the heart derived?

Correct AnswerverifiedShow Answer

Following ovulation,how long does a secondary oocyte remain viable?

Correct AnswerverifiedShow Answer

Which is regarding the process of meiosis?

Correct AnswerverifiedShow Answer

Correct Answer
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