Question 1

Which one of the following statements is true?

Accepted Answer

A)  Natural family planning is one of the most reliable forms of birth control. 
B)  Morning-after pills are about 25% effective at preventing pregnancy. 
C)  Tubal ligation prevents ovulation. 
D)  A vasectomy involves removing a section of each vas deferens. 
A)  Natural family planning is one of the most reliable forms of birth control. 
B)  Morning-after pills are about 25% effective at preventing pregnancy. 
C)  Tubal ligation prevents ovulation. 
D)  A vasectomy involves removing a section of each vas deferens.

Question 2

The lifeline between the embryo and the placenta ______.

Accepted Answer

A)  is derived from the yolk sac 
B)  is derived from the amnion 
C)  is called the chorion 
D)  is called the umbilical cord 
A)  is derived from the yolk sac 
B)  is derived from the amnion 
C)  is called the chorion 
D)  is called the umbilical cord

Question 3

Which of the following is an aspect of asexual reproduction that is sometimes disadvantageous?

Accepted Answer

A)  It allows animals that do not move around to produce offspring without finding mates. 
B)  It allows an animal to produce many offspring quickly. 
C)  It saves the time and energy of gamete production. 
D)  It produces genetically uniform populations. 
A)  It allows animals that do not move around to produce offspring without finding mates. 
B)  It allows an animal to produce many offspring quickly. 
C)  It saves the time and energy of gamete production. 
D)  It produces genetically uniform populations.

Question 4

Which of the following results from cleavage?

Accepted Answer

A)  formation of the nervous system 
B)  formation of the notochord 
C)  more cells 
D)  segmentation 
A)  formation of the nervous system 
B)  formation of the notochord 
C)  more cells 
D)  segmentation

Question 5

The figure shows male reproductive anatomy.In a human male reproductive system ______.

Accepted Answer

A)  sperm mature in the urethra 
B)  the vas deferens conducts sperm between the testis and epididymis 
C)  the sperm travel through the urethra during ejaculation 
D)  sperm mature in the prostate gland 
A)  sperm mature in the urethra 
B)  the vas deferens conducts sperm between the testis and epididymis 
C)  the sperm travel through the urethra during ejaculation 
D)  sperm mature in the prostate gland

Question 6

Which one of the following STDs is not caused by a virus?

Accepted Answer

A)  AIDS 
B)  chlamydia 
C)  genital warts 
D)  genital herpes 
A)  AIDS 
B)  chlamydia 
C)  genital warts 
D)  genital herpes

Question 7

The figure shows oogenesis.What is the function of the polar bodies that are produced during oogenesis? They are a mechanism that allows for ______.

Accepted Answer

A)  the shedding of excess cytoplasm during the production of a haploid ovum 
B)  the shedding of excess genetic material during the production of a haploid ovum 
C)  the shedding of excess mitochondria during the production of a haploid ovum 
D)  streamlining of the ovum so as to facilitate the penetration of an ovum by a sperm 
A)  the shedding of excess cytoplasm during the production of a haploid ovum 
B)  the shedding of excess genetic material during the production of a haploid ovum 
C)  the shedding of excess mitochondria during the production of a haploid ovum 
D)  streamlining of the ovum so as to facilitate the penetration of an ovum by a sperm

Question 8

What is gestation?

Accepted Answer

A)  conception 
B)  fertilization 
C)  development 
D)  pregnancy 
A)  conception 
B)  fertilization 
C)  development 
D)  pregnancy

Question 9

Bill suffers from a low sperm count.After meeting with his physician,he tells his wife that there might be a simple solution.Bill's physician suggests that he might raise his sperm count by ______.

Accepted Answer

A)  drinking more orange juice 
B)  wearing boxer shorts 
C)  having sex more often 
D)  riding a bicycle 
A)  drinking more orange juice 
B)  wearing boxer shorts 
C)  having sex more often 
D)  riding a bicycle

Question 10

In a human female reproductive system,the ______.

Accepted Answer

A)  hymen partly covers the cervical opening 
B)  vagina secretes hormones that help maintain the uterine lining 
C)  labia minora are a pair of thick, fatty ridges that protect the entire genital region 
D)  outer features are collectively called the vulva 
A)  hymen partly covers the cervical opening 
B)  vagina secretes hormones that help maintain the uterine lining 
C)  labia minora are a pair of thick, fatty ridges that protect the entire genital region 
D)  outer features are collectively called the vulva

Question 11

The animal in the accompanying figure illustrates ______.

Accepted Answer

A)  fission 
B)  regeneration 
C)  budding 
D)  none of the above 
A)  fission 
B)  regeneration 
C)  budding 
D)  none of the above

Question 12

The yolk sac of humans ______.

Accepted Answer

A)  stores nutrients to support the developing embryo 
B)  produces blood cells and gamete-forming cells 
C)  secretes HCG 
D)  absorbs nutrients from, and releases waste to, the mother's blood 
A)  stores nutrients to support the developing embryo 
B)  produces blood cells and gamete-forming cells 
C)  secretes HCG 
D)  absorbs nutrients from, and releases waste to, the mother's blood

Question 13

Which of the following substances stimulates contractions in uterine smooth muscle during labor?

Accepted Answer

A)  progesterone 
B)  estrogen 
C)  oxytocin 
D)  prolactin 
A)  progesterone 
B)  estrogen 
C)  oxytocin 
D)  prolactin

Question 14

A sperm cell's acrosome ______.

Accepted Answer

A)  contains the sperm's nucleus and is the part of the sperm that enters the egg during fertilization 
B)  fuses with the plasma membrane of the egg cell 
C)  contains enzymes that are released when the sperm encounters an egg and dissolves a hole in the jellylike matrix that surrounds the egg 
D)  contains the sperm's mitochondria 
A)  contains the sperm's nucleus and is the part of the sperm that enters the egg during fertilization 
B)  fuses with the plasma membrane of the egg cell 
C)  contains enzymes that are released when the sperm encounters an egg and dissolves a hole in the jellylike matrix that surrounds the egg 
D)  contains the sperm's mitochondria

Question 15

When a chemical signal from a group of embryonic cells causes a different,nearby group of cells to embark on a particular developmental course (say,differentiating into a leg),the interaction between the two groups of cells is called ______.

Accepted Answer

A)  induction 
B)  coordinated differentiation 
C)  programmed cell death 
D)  potentiation 
A)  induction 
B)  coordinated differentiation 
C)  programmed cell death 
D)  potentiation

Question 16

Which of the following correctly lists the three stages of labor,in the proper order?

Accepted Answer

A)  dilation, expulsion, delivery of the placenta 
B)  dilation, crowning, expulsion 
C)  contractions, dilation, expulsion 
D)  contractions, dilation, crowning 
A)  dilation, expulsion, delivery of the placenta 
B)  dilation, crowning, expulsion 
C)  contractions, dilation, expulsion 
D)  contractions, dilation, crowning

Question 17

Where in a woman's reproductive tract does fertilization most often take place?

Accepted Answer

A)  in the ovary 
B)  in the upper part of the oviduct 
C)  in the lower part of the oviduct 
D)  in the uterus 
A)  in the ovary 
B)  in the upper part of the oviduct 
C)  in the lower part of the oviduct 
D)  in the uterus

Question 18

Asexual reproduction

Accepted Answer

A)  creates individuals with unique combinations of genes. 
B)  generates enormous genetic variation. 
C)  is an effective way for animals to expand their population quickly and exploit an available environment. 
D)  provides greater adaptability to changing environments. 
A)  creates individuals with unique combinations of genes. 
B)  generates enormous genetic variation. 
C)  is an effective way for animals to expand their population quickly and exploit an available environment. 
D)  provides greater adaptability to changing environments.

Question 19

Which of the following processes dominates the third trimester of human development?

Accepted Answer

A)  formation of internal organs 
B)  formation of external features such as arms and legs 
C)  growth 
D)  organ formation 
A)  formation of internal organs 
B)  formation of external features such as arms and legs 
C)  growth 
D)  organ formation

Question 20

What would happen if an embryo failed to secrete HCG?

Accepted Answer

A)  The maternal elements of the placenta would fail to develop. 
B)  The fetal elements of the placenta would fail to develop. 
C)  Neural tube formation would not occur, and the embryo would not have a brain. 
D)  The embryo would be aborted. 
A)  The maternal elements of the placenta would fail to develop. 
B)  The fetal elements of the placenta would fail to develop. 
C)  Neural tube formation would not occur, and the embryo would not have a brain. 
D)  The embryo would be aborted.

Exam 26: Reproduction and Development

Which one of the following statements is true?

The lifeline between the embryo and the placenta ______.

Which of the following is an aspect of asexual reproduction that is sometimes disadvantageous?

Which of the following results from cleavage?

The figure shows male reproductive anatomy.In a human male reproductive system ______.

Which one of the following STDs is not caused by a virus?

The figure shows oogenesis.What is the function of the polar bodies that are produced during oogenesis? They are a mechanism that allows for ______.

What is gestation?

Bill suffers from a low sperm count.After meeting with his physician,he tells his wife that there might be a simple solution.Bill's physician suggests that he might raise his sperm count by ______.

In a human female reproductive system,the ______.

The animal in the accompanying figure illustrates ______.

The yolk sac of humans ______.

Which of the following substances stimulates contractions in uterine smooth muscle during labor?

A sperm cell's acrosome ______.

When a chemical signal from a group of embryonic cells causes a different,nearby group of cells to embark on a particular developmental course (say,differentiating into a leg),the interaction between the two groups of cells is called ______.

Which of the following correctly lists the three stages of labor,in the proper order?

Where in a woman's reproductive tract does fertilization most often take place?

Asexual reproduction

Which of the following processes dominates the third trimester of human development?

What would happen if an embryo failed to secrete HCG?

Introduction- Biology Today

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy from Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells from Cells

Patterns of Inheritance

The Structure and Function of DNA

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

Plants, Fungi, and the Move onto Land

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Body's Defenses

Hormones

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

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