Question 1

Which of the following behaviors is not specialized to help an animal find a mate?

Accepted Answer

A) bees carrying pollen between flowers 
B) the flashing lights of fireflies 
C) fragrant chemicals released by female moths 
D) the chirping sound of a male cricket 
A) bees carrying pollen between flowers 
B) the flashing lights of fireflies 
C) fragrant chemicals released by female moths 
D) the chirping sound of a male cricket A

Question 2

In human females, primary oocytes do not develop into mature eggs

Accepted Answer

A) unless they are fertilized. 
B) until they reach the uterus. 
C) until the first trimester. 
D) until puberty. 
A) unless they are fertilized. 
B) until they reach the uterus. 
C) until the first trimester. 
D) until puberty. D

Question 3

The teen birthrate can be reduced by incorporating both abstinence and ____________________ in sex education programs.

Accepted Answer

contraception

Question 4

The shape of the beak of a hummingbird (very long and thin)and that of a finch (short and fat)is controlled by the same set of genes. Which of the following could account for the differences between these two bird beaks?

Accepted Answer

A) Apoptosis occurs in the beak of the finch, but not in the beak of the hummingbird. 
B) Although development is controlled by the same genes, the genes produce different proteins and those proteins cause development to occur in different ways. 
C) The hummingbird retains stem cells for a longer period of time during development than does the finch. 
D) The genes involved in determining beak shape stay on for different lengths of time in each bird. 
A) Apoptosis occurs in the beak of the finch, but not in the beak of the hummingbird. 
B) Although development is controlled by the same genes, the genes produce different proteins and those proteins cause development to occur in different ways. 
C) The hummingbird retains stem cells for a longer period of time during development than does the finch. 
D) The genes involved in determining beak shape stay on for different lengths of time in each bird.

Question 5

The graph below shows the rate of cell division in a developing frog embryo.  
Why does the rate of growth decrease dramatically after the point indicated by the arrow?

Accepted Answer

A) At this point, development switches from rapid cell growth to cell differentiation and migration. 
B) The arrow indicates when the embryo begins to run out of its internal food source and must find another source to continue developing. 
C) This is when fertilization occurs. Before this point, the single-celled egg was growing quickly as it stored food. After this point, growth slows for the more deliberate process of development. 
D) At the time indicated by the arrow, the trophoblast separates from the inner cell mass and the two tissues begin to divide at different and slower rates. 
A) At this point, development switches from rapid cell growth to cell differentiation and migration. 
B) The arrow indicates when the embryo begins to run out of its internal food source and must find another source to continue developing. 
C) This is when fertilization occurs. Before this point, the single-celled egg was growing quickly as it stored food. After this point, growth slows for the more deliberate process of development. 
D) At the time indicated by the arrow, the trophoblast separates from the inner cell mass and the two tissues begin to divide at different and slower rates.

Question 6

Land animals are more likely to undergo fertilization outside their bodies because gametes require dry environments in order to fuse and develop.

Accepted Answer

A) True 
 B)False

Question 7

Organisms that have both functional testes and functional ovaries are known as ____________________.

Accepted Answer

The answer of Organisms that have both functional testes and...

Question 8

The three layers of cells in a human embryo are ectoderm, endoderm, and ____________________.

Accepted Answer

The answer of The three layers of cells in a...

Question 9

Women who wish to have children after age 40 have a greater risk of conceiving a child with a birth defect because their egg quality will be poorer.

Accepted Answer

A) True 
 B)False

Question 10

Genes are generally switched on or off by the presence of proteins called ____________________.

Accepted Answer

The answer of Genes are generally switched on or off...

Question 11

The mitochondria in your cells are a mix of the mitochondria found in your father's sperm and your mother's egg cell because the contents of the sperm cytoplasm are dumped into the egg cell during fertilization.

Accepted Answer

A) True 
 B)False

Question 12

Abstinence-only sex education methods have been proven effective at reducing teen birthrates.

Accepted Answer

A) True 
 B)False

Question 13

In fruit flies, morphogens

Accepted Answer

A) are composed of nucleic acids. 
B) switch genes on and off. 
C) are receptor proteins. 
D) exist only in the eggs. 
A) are composed of nucleic acids. 
B) switch genes on and off. 
C) are receptor proteins. 
D) exist only in the eggs.

Question 14

The body retains stems cells after embryonic development is complete because

Accepted Answer

A) stem cells give rise to gametes throughout the life of a mature male. 
B) stem cells are responsible for the production of the various cells in our blood, which can be easily lost as a result of injury. 
C) in many tissues, cells must be regenerated and replaced as they wear out. 
D) all of the above 
A) stem cells give rise to gametes throughout the life of a mature male. 
B) stem cells are responsible for the production of the various cells in our blood, which can be easily lost as a result of injury. 
C) in many tissues, cells must be regenerated and replaced as they wear out. 
D) all of the above

Question 15

Which of the following structures are commonly manipulated for sterilization?

Accepted Answer

A) structure A 
B) structure B 
C) structure C 
D) structure D 
A) structure A 
B) structure B 
C) structure C 
D) structure D

Question 16

Animal species in which the offspring tend to move away from their parents to live in slightly different habitats are likely to benefit from

Accepted Answer

A) asexual reproduction. 
B) sexual reproduction. 
C) providing DNA for transformation. 
D) a gametophyte generation. 
A) asexual reproduction. 
B) sexual reproduction. 
C) providing DNA for transformation. 
D) a gametophyte generation.

Question 17

In the last few weeks of pregnancy, the level of estrogen in a woman's blood rises. This causes

Accepted Answer

A) the fetus to develop more rapidly. 
B) the amount of prostaglandin secreted by the placenta to decrease. 
C) the muscles of the uterus to become more sensitive to the hormone oxytocin. 
D) even more estrogen to be released from the pituitary. 
A) the fetus to develop more rapidly. 
B) the amount of prostaglandin secreted by the placenta to decrease. 
C) the muscles of the uterus to become more sensitive to the hormone oxytocin. 
D) even more estrogen to be released from the pituitary.

Question 18

Which of the following statements about hermaphrodites is true?

Accepted Answer

A) Hermaphrodites can mate with every individual of the same species that they encounter. 
B) Hermaphrodites can generally fertilize their own eggs. 
C) Hermaphrodites have either testes or ovaries. 
D) Few animal phyla include hermaphroditic species. 
A) Hermaphrodites can mate with every individual of the same species that they encounter. 
B) Hermaphrodites can generally fertilize their own eggs. 
C) Hermaphrodites have either testes or ovaries. 
D) Few animal phyla include hermaphroditic species.

Question 19

Different versions of the protein hemoglobin are found in a baby's blood cells at different stages of development. Changes in the hemoglobin type present are most likely the result of

Accepted Answer

A) what genes are transcribed. 
B) whether or not the transcribed mRNA can leave the nucleus. 
C) how translated RNA is cut up. 
D) how mRNA is distributed in the red blood cells. 
A) what genes are transcribed. 
B) whether or not the transcribed mRNA can leave the nucleus. 
C) how translated RNA is cut up. 
D) how mRNA is distributed in the red blood cells.

Question 20

During labor more and more oxytocin is produced due to ____________________ feedback.

Accepted Answer

The answer of During labor more and more oxytocin is...

Exam 33: Reproduction and Development

Which of the following behaviors is not specialized to help an animal find a mate?

In human females, primary oocytes do not develop into mature eggs

The teen birthrate can be reduced by incorporating both abstinence and ____________________ in sex education programs.

The shape of the beak of a hummingbird (very long and thin)and that of a finch (short and fat)is controlled by the same set of genes. Which of the following could account for the differences between these two bird beaks?

The graph below shows the rate of cell division in a developing frog embryo. Why does the rate of growth decrease dramatically after the point indicated by the arrow?

Land animals are more likely to undergo fertilization outside their bodies because gametes require dry environments in order to fuse and develop.

Organisms that have both functional testes and functional ovaries are known as ____________________.

The three layers of cells in a human embryo are ectoderm, endoderm, and ____________________.

Women who wish to have children after age 40 have a greater risk of conceiving a child with a birth defect because their egg quality will be poorer.

Genes are generally switched on or off by the presence of proteins called ____________________.

The mitochondria in your cells are a mix of the mitochondria found in your father's sperm and your mother's egg cell because the contents of the sperm cytoplasm are dumped into the egg cell during fertilization.

Abstinence-only sex education methods have been proven effective at reducing teen birthrates.

In fruit flies, morphogens

The body retains stems cells after embryonic development is complete because

Which of the following structures are commonly manipulated for sterilization?

Animal species in which the offspring tend to move away from their parents to live in slightly different habitats are likely to benefit from

In the last few weeks of pregnancy, the level of estrogen in a woman's blood rises. This causes

Which of the following statements about hermaphrodites is true?

Different versions of the protein hemoglobin are found in a baby's blood cells at different stages of development. Changes in the hemoglobin type present are most likely the result of

During labor more and more oxytocin is produced due to ____________________ feedback.

The Nature of Science and the Characteristics of Life

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Stem Cells, Cancer, and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

Dna and Genes

From Gene to Protein

Dna Technology

How Evolution Works

Evolution of Populations

Speciation and the Origins of Biological Diversity

The Evolutionary History of Life

The Biosphere

Growth of Populations

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons, Muscles, and Movement

Defenses Against Disease

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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