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Chapter 25 Quiz 1
Final Practice
20
Biology
Undergraduate 2
05/10/2011

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Term
Why are STDs nearly impossible to eradicate from the population?
Definition
Infected people are often asymptomatic and all partners have to be treated simultaneously to prevent re-infection.
Term
Which event in the menstrual cycle is triggered when blood estrogen levels fall and after the uterine lining is shed?
Definition
FSH is released from the pituitary.
Term
Aside from the need to find a partner, which of the following is another major DISADVANTAGE of sexual reproduction?
Definition
Finding a mate can consume lots of energy and time.
Term
The corpus luteum:
Definition
is the initial source of progesterone during pregnancy.
Term
Prior to fertilization, the pathway traveled by sperm through the female reproductive system is:
Definition
vagina, cervix, uterus, Fallopian tube.
Term
Which of the following statements about sexually transmitted diseases is true?
Definition
STDs can be transmitted through the mouth or the anus.
Term
For which of the following reasons might a man claim a reasonable legal right to an embryo produced by fertilizing an egg with his sperm?
Definition
The embryo contains half of the man's DNA .
Term
In animals, the endoderm, mesoderm, and ectoderm are the types of:
Definition
germ layers.
Term
What structure in a sperm cell contains what might be called "a cap or bag containing digestive enzymes"?
Definition
acrosome
Term
Most of the "eggs" in the ovary are arrested as ________ in the process of oogenesis when a female reaches puberty.
Definition
primary oocytes
Term
An animal called a hydra can reproduce by growing a miniature version of itself directly from the tissues of the parent. The miniature hydra then breaks off and grows to full size. This type of reproduction is best called:
Definition
budding.
Term
Which of the following statements is true about external fertilization in most species?
Definition
All of the above are true.
Term
In which part of a sperm cell can mitochondria be found?
Definition
body
Term
Infertility of two prospective parents is defined as:
Definition
the inability to become pregnant after one year of trying.
Term
The completion of meiosis II in the oocyte of human females occurs:
Definition
after the oocyte is fertilized by a spermatazoan.
Term
The _____________ is the site of gamete production in human females.
Definition
ovary
Term
A primary function of the prostate gland is:
Definition
to produce the fluid (non-sperm) components of semen.
Term
Contraception usually involves one of three methods. What are these three?
Definition
preventing fertilization, preventing implantation, preventing ovulation
Term
In species which alternate between sexual and asexual reproduction, the trigger that switches them to sexual reproduction is often
Definition
changing environmental conditions.
Term
In the menstrual cycle of the human female, the direct response to the increase in the luteinizing hormone is:
Definition
ovulation.
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