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Life, 4/e

Ricki Lewis, University of New York at Albany
Mariëlle Hoefnagels, University of Oklahoma
Douglas Gaffin, University of Oklahoma
Bruce Parker, Utah Valley State College

Human Reproduction and Development

Chapter Quiz


1	True or false. Scientists now support the idea of preformation.
		A)	True
		B)	False


2	What part of a developing newt embryo is a vital trigger in embryonic development?
		A)	yolk sac
		B)	dorsal lip
		C)	embryonicdisk
		D)	trophoblast


3	Why is the cloned sheep, Dolly, already considered old?
		A)	her gender plays a role
		B)	X inactivation
		C)	telomere shortening
		D)	All of these are correct.


4	True or false. Generally speaking, once a cell has become specialized, developmental genes are turned off.
		A)	True
		B)	False


5	What is the first stage of development?
		A)	ovulation
		B)	fertilization
		C)	implantation
		D)	specialization


6	Genes that, when mutated, lead to organisms with body parts in the wrong places are called _________.
		A)	homeopathic
		B)	morphogenes
		C)	somatic
		D)	homeotic


7	Where are sperm cells stored in the human male until they mature?
		A)	seminiferous tubules
		B)	rete testes
		C)	epididymis
		D)	vas deferens


8	What gland does not contribute to seminal fluid?
		A)	pineal gland
		B)	prostate gland
		C)	bulbourethral glands
		D)	seminal vesicles


9	The uterine lining is called the _____________.
		A)	labia majora
		B)	cervix
		C)	endometrium
		D)	myometrium


10	Ovulation in human females is triggered by ________________.
		A)	presence of sperm cells in the reproductive tract
		B)	midcycle surge of LH
		C)	degeneration of corpus luteum
		D)	increasing levels of estrogen


11	What hormone is the basis for human pregnancy tests?
		A)	estrogen
		B)	progesterone
		C)	prostaglandins
		D)	human chorionic gonadotropin


12	When is the embryonic stage of human development?
		A)	fertilization to one month
		B)	two to eight weeks
		C)	eight weeks to six months
		D)	first trimester


13	True or false. A process called capacitation activates sperm inside a woman so the sperm may enter the oocyte.
		A)	True
		B)	False


14	True or false. The oocyte is encased in a layer of cells, called the zona pellucida, at ovulation.
		A)	True
		B)	False


15	What birth control method has a high success rate of protecting against both pregnancy and sexually transmitted disease?
		A)	birth control pill
		B)	hormonal implants
		C)	rhythm method
		D)	condom and spermicide


16	What embryonic stage has three distinct germ layers?
		A)	morula
		B)	blastocyst
		C)	gastrula
		D)	None of these is correct.


17	What structure in the developing embryo gives rise to the notochord?
		A)	primitive streak
		B)	allantois
		C)	mesoderm cells
		D)	trophoblast


18	When does the cartilage skeleton appear in the embryo?
		A)	1-2 weeks
		B)	7-8 weeks
		C)	2-3 months
		D)	last trimester


19	What extraembryonic membrane gives rise to the arteries and vein of the umbilical cord?
		A)	yolk sac
		B)	amnion
		C)	chorion
		D)	allantois


20	Why do premature infants often have difficulty breathing?
		A)	too small to have effective breathing muscles
		B)	they lack sufficient hemoglobin
		C)	respiratory system is one of the last to mature
		D)	the brain has not learned to control breathing


21	Choose the trait that is not typical of passive aging.
		A)	degeneration of connective tissue elastin
		B)	increased acuity of senses
		C)	accumulation of DNA errors
		D)	lipid breakdown


22	True or false. Differences that enable females to outlive males may begin very early in development.
		A)	True
		B)	False

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