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Biologyonline11thCh4311A

True/False
Indicate whether the statement is true or false.
 

 1. 

Sperm are produced and mature in the testes.
 

 2. 

Testosterone is produced by the testes.
 

 3. 

The urethra is the tube that carries semen during ejaculation.
 

 4. 

Semen contains sugars to provide energy for sperm cells.
 

 5. 

An ovum is a mature egg cell.
 

 6. 

The fallopian tubes are the organs responsible for producing eggs.
 

 7. 

The uterus is a pear-shaped organ made of three muscular layers.
 

 8. 

The entrance to the uterus is known as the cervix.
 

 9. 

Luteinizing hormone (LH) causes the maturation of eggs.
 

 10. 

The ovary is the source of follicle-stimulating hormone (FSH).
 

 11. 

The lining of the uterus begins to thicken and become spongy in preparation to receive the embryo in the four or five days after an egg is released from the ovary.
 

 12. 

Fertilization usually takes place in the fallopian tubes.
 

 13. 

By the time the zygote reaches the uterus, it is a hollow ball of cells called a blastocyst.
 

 14. 

The implantation of an embryo into the uterine lining is called fertilization.
 

 15. 

Immediately after fertilization, a human embryo rapidly increases in size.
 

 16. 

In the placenta, fetal blood mixes directly with maternal blood.
 

 17. 

No treatment is necessary for syphilis, gonorrhea, and chlamydia because the body will cure these diseases naturally over a period of time.
 

 18. 

Pelvic inflammatory disease, or PID, is one of the most common causes of infertility in women.
 

 19. 

Genital herpes is a sexually transmitted disease caused by a virus.
 

 20. 

Symptoms of genital herpes include periodic outbreaks of painful blisters in the genital region and flulike aches and fever.
 

 21. 

Like HIV, herpes simplex virus can be passed from mother to fetus during pregnancy or birth.
 

 22. 

In its early stage, genital herpes can be cured by the use of antibiotics.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 23. 

Sperm and eggs are both
a.
haploid.
c.
tetraploid.
b.
diploid.
d.
None of the above
 
 
nar001-1.jpg
 

 24. 

Refer to the illustration above. Sperm are produced in
a.
A.
c.
F.
b.
E.
d.
H.
 

 25. 

Refer to the illustration above. The structure that connects the epididymis to the urethra is labeled
a.
A.
c.
I.
b.
H.
d.
B.
 

 26. 

Refer to the illustration above. The tube that carries urine during excretion and semen during ejaculation is labeled
a.
A.
c.
B.
b.
H.
d.
D.
 

 27. 

Refer to the illustration above. The scrotum is indicated by label
a.
A.
c.
G.
b.
E.
d.
H.
 

 28. 

Refer to the illustration above. The structure labeled C is the
a.
urinary bladder.
c.
prostate gland.
b.
scrotal sac.
d.
bulbourethral gland.
 

 29. 

A sperm cell consists of a tail used for locomotion, and a head that contains ____, which help(s) the sperm cell penetrate an egg cell.
a.
semen
c.
enzymes
b.
RNA
d.
mucus
 

 30. 

The midpiece of a sperm cell contains many ____, which supply sperm with the energy needed to propel themselves through the female reproductive system.
a.
nuclei
c.
tubules
b.
mitochondria
d.
heads
 

 31. 

The process by which sperm leave the male’s body is called
a.
secretion.
c.
diffusion.
b.
ejaculation.
d.
locomotion.
 

 32. 

In which of the following ways are mature human sperm and eggs similar?
a.
They both have the same number of chromosomes in their nuclei.
b.
They are both the same size.
c.
They are both equipped with a flagellum that provides motility.
d.
They are both produced after ovulation.
 
 
nar002-1.jpg
 

 33. 

Refer to the illustration above. The structure labeled C is
a.
a fallopian tube.
c.
the uterus.
b.
the urethra.
d.
a ureter.
 

 34. 

Refer to the illustration above. Fertilization usually occurs in the structure labeled
a.
A.
c.
C.
b.
F.
d.
B.
 

 35. 

Eggs are produced in the
a.
ovaries.
c.
uterus.
b.
fallopian tubes.
d.
vagina.
 

 36. 

ovary : egg production ::
a.
ovary : sperm production
b.
female reproductive system : sperm production
c.
testes : sperm production
d.
ovary : fertilization
 
 
nar003-1.jpg
 

 37. 

Refer to the illustration above. The structure labeled C is a(n)
a.
immature follicle.
c.
mature egg.
b.
follicle beginning to break down.
d.
immature egg.
 

 38. 

Refer to the illustration above. The structure labeled B is
a.
a sperm cell.
c.
an egg cell.
b.
a follicle.
d.
the cervix.
 

 39. 

Refer to the illustration above. The structure labeled A is
a.
a follicle.
c.
the uterus.
b.
an egg cell.
d.
an ovary.
 

 40. 

The entrance to the uterus is called the
a.
vagina.
c.
cervix.
b.
uterus.
d.
diaphragm.
 

 41. 

The ruptured follicle that is left in the ovary after ovulation develops into a
a.
corpus luteum.
c.
chorion.
b.
zygote.
d.
cervix.
 

 42. 

If no embryo arrives after the uterus has prepared to receive it,
a.
birth will occur later than the usual nine months.
b.
the lining of the uterus stays intact in preparation for another embryo.
c.
the lining of the uterus is expelled from the body in menstrual blood.
d.
None of the above
 

 43. 

Menopause is the time at which
a.
adult sex characteristics first appear.
c.
menstruation begins.
b.
eggs are produced.
d.
females cease to release eggs.
 

 44. 

The attachment of an embryo into the uterine wall is known as
a.
implantation.
c.
labor.
b.
development.
d.
fertilization.
 

 45. 

Cells produced by division of the fertilized egg give rise to the
a.
embryo.
c.
umbilical cord.
b.
placenta.
d.
All of the above
 

 46. 

Embryonic cells are organized into the major organ systems
a.
during the sixth month.
c.
during the second trimester.
b.
by the end of the first trimester.
d.
just before birth.
 

 47. 

The embryo is formed
a.
in the ovary.
c.
at fertilization.
b.
during the third trimester of pregnancy.
d.
when the fertilized egg divides.
 

 48. 

The structure that exchanges substances between mother and fetus is the
a.
yolk sac.
c.
placenta.
b.
fallopian tube.
d.
mature follicle.
 

 49. 

Pregnancy is often divided into three 3-month periods known as
a.
quarters.
c.
trimesters.
b.
fetal development.
d.
ovarian cycles.
 

 50. 

Drinking alcohol, smoking, or using other drugs during pregnancy can cause
a.
birth defects in babies.
c.
mental retardation.
b.
small or sick babies.
d.
All of the above
 

 51. 

Sexually transmitted diseases such as gonorrhea and chlamydia, which are caused by bacteria,
a.
are almost always incurable.
b.
are a direct result of viral infections in a fetus.
c.
can usually be treated with antibiotics.
d.
None of the above
 

 52. 

Gonorrhea can be acquired
a.
by sharing glassware and dishes with infected persons.
b.
through sexual contact with infected persons.
c.
by swimming in infected swimming pools.
d.
through poor personal hygiene habits.
 

 53. 

Pelvic inflammatory disease, or PID, is usually caused by
a.
HIV.
c.
gonorrhea or chlamydia.
b.
syphilis.
d.
All of the above
 

 54. 

gonorrhea infection in females : no symptoms ::
a.
gonorrhea infection : warts
c.
chlamydia infection: chancre
b.
syphilis infection : pus discharge
d.
genital herpes : fever blisters
 

 55. 

AIDS is caused by
a.
HPV.
c.
HSV.
b.
HIV.
d.
CMV.
 

 56. 

The most common sexually transmitted disease in the United States that is caused by bacteria is
a.
gonorrhea.
c.
syphilis.
b.
AIDS.
d.
chlamydia.
 

 57. 

Pelvic inflammatory disease (PID) is the one of the most common causes of ____ in women.
a.
embryonic developmental problems
c.
abortions
b.
prolonged labor
d.
infertility
 

Completion
Complete each statement.
 

 58. 

In the testes, sperm are produced in tubes called ____________________ ____________________.
 

 

 59. 

The testes are suspended in a sac called the ____________________.
 

 

 60. 

The immature eggs found in a female at birth are arrested in the ____________________ stage of the first meiotic division.
 

 

 61. 

The release of an egg from an ovary is called ____________________.
 

 

 62. 

The period of rapid division of an egg immediately after fertilization is called ____________________.
 

 

 63. 

Nutrients, oxygen, and wastes are transferred between the mother and embryo through the ____________________.
 

 

 64. 

Following implantation, a membrane called the ____________________ encloses the embryo.
 

 

 65. 

Syphilis usually begins with the appearance of a painless ulcer called a(n) ____________________.
 

 

 66. 

The most common bacterial STD in the United States is ____________________.
 

 

 67. 

AIDS is caused by a virus called ____________________.
 

 



 
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