Question 1

A penis becomes erect because of ____.

Accepted Answer

A) muscle contractions 
B) blood flow into spongy tissue 
C) hydrostatic pressure 
D) osmosis 
E) abdominal wall contractions 
A) muscle contractions 
B) blood flow into spongy tissue 
C) hydrostatic pressure 
D) osmosis 
E) abdominal wall contractions

Question 2

What are somites?

Accepted Answer

A) neural tissue that gives rise to the cranial nerves 
B) neural tissue that give rise to the peripheral nerves 
C) neural tissue that gives rise to the two hemispheres of the brain 
D) mesoderm tissue that gives rise to the bones and skeletal muscles of the trunk 
E) mesoderm tissue that gives rise to the smooth muscles of the heart and lungs 
A) neural tissue that gives rise to the cranial nerves 
B) neural tissue that give rise to the peripheral nerves 
C) neural tissue that gives rise to the two hemispheres of the brain 
D) mesoderm tissue that gives rise to the bones and skeletal muscles of the trunk 
E) mesoderm tissue that gives rise to the smooth muscles of the heart and lungs

Question 3

Why is more than one sperm needed for fertilization to occur, when only one sperm actually penetrates the egg?

Accepted Answer

A) the sperm work together to lower the acidity in the uterus for survival 
B) the sperm work together reduce drag as they swim up the oviduct 
C) the sperm work together to surround the egg prior to fertilization 
D) the sperm work together to break down the egg's protein layer 
E) the sperm work together to break down the cap on the sperm's head 
A) the sperm work together to lower the acidity in the uterus for survival 
B) the sperm work together reduce drag as they swim up the oviduct 
C) the sperm work together to surround the egg prior to fertilization 
D) the sperm work together to break down the egg's protein layer 
E) the sperm work together to break down the cap on the sperm's head

Question 4

Which structure is responsible for keeping the fetus from slipping out of the uterus prematurely?

Accepted Answer

A) cervix 
B) vagina 
C) endometrium 
D) placenta 
E) umbilical cord 
A) cervix 
B) vagina 
C) endometrium 
D) placenta 
E) umbilical cord

Question 5

Protein digesting enzymes are released from the sperm head when it binds to the ____.

Accepted Answer

A) secondary oocyte plasma membrane 
B) follicle cells 
C) corpus luteum 
D) secondary oocyte protein layer 
E) egg nucleus 
A) secondary oocyte plasma membrane 
B) follicle cells 
C) corpus luteum 
D) secondary oocyte protein layer 
E) egg nucleus

Question 6

In humans, the fluid immediately surrounding the embryo is contained in the _____.

Accepted Answer

A) allantois 
B) placenta 
C) chorion 
D) amnion 
E) yolk sac 
A) allantois 
B) placenta 
C) chorion 
D) amnion 
E) yolk sac

Question 7

A fully functional corpus luteum secretes ____.

Accepted Answer

A) LH and FSH 
B) estrogens and progesterone 
C) GnRH and estrogens 
D) estrogens and FSH 
E) progesterone and LH 
A) LH and FSH 
B) estrogens and progesterone 
C) GnRH and estrogens 
D) estrogens and FSH 
E) progesterone and LH

Question 8

The first child conceived using IVF was born in ____.

Accepted Answer

A) 1958 
B) 1968 
C) 1978 
D) 1988 
E) 1998 
A) 1958 
B) 1968 
C) 1978 
D) 1988 
E) 1998

Question 9

Sperm use ____ for their energy source.

Accepted Answer

A) fructose 
B) glucose 
C) ions 
D) proteins 
E) prostate gland secretions 
A) fructose 
B) glucose 
C) ions 
D) proteins 
E) prostate gland secretions

Question 10

Women with polycystic ovarian syndrome have difficulty conceiving because ____.

Accepted Answer

A) they don't produce enough oocytes 
B) the oocytes they produced cannot mature 
C) they ovulate infrequently 
D) the uterus is filled with mucus that impedes implantation 
E) the oviducts are scarred 
A) they don't produce enough oocytes 
B) the oocytes they produced cannot mature 
C) they ovulate infrequently 
D) the uterus is filled with mucus that impedes implantation 
E) the oviducts are scarred

Question 11

Mammals nourish their embryos by means of a ____.

Accepted Answer

A) placenta 
B) uterus 
C) yolk sac 
D) blastocyst 
E) amnion 
A) placenta 
B) uterus 
C) yolk sac 
D) blastocyst 
E) amnion

Question 12

Inside the penis, there are ____ cylinders of spongy tissue.

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 13

Which structure becomes part of the placenta?

Accepted Answer

A) chorion 
B) amnion 
C) blastocoel 
D) yolk sac 
E) allantois 
A) chorion 
B) amnion 
C) blastocoel 
D) yolk sac 
E) allantois

Question 14

Which of the listed contraceptive methods is the most effective?

Accepted Answer

A) withdrawal 
B) diaphragm 
C) condoms 
D) douching 
E) rhythm method 
A) withdrawal 
B) diaphragm 
C) condoms 
D) douching 
E) rhythm method

Question 15

Fertilization in humans occurs in the ____.

Accepted Answer

A) ovary 
B) uterus 
C) vagina 
D) oviduct 
E) follicle 
A) ovary 
B) uterus 
C) vagina 
D) oviduct 
E) follicle

Question 16

Menstrual flow results in the discharge of ____.

Accepted Answer

A) the follicle 
B) the corpus luteum 
C) the lining of the uterus 
D) surface cells from the vagina 
E) blood from the blood vessels on the outer surface of the uterus 
A) the follicle 
B) the corpus luteum 
C) the lining of the uterus 
D) surface cells from the vagina 
E) blood from the blood vessels on the outer surface of the uterus

Question 17

Which hormone prepares the reproductive tract for pregnancy?

Accepted Answer

A) estrogen 
B) luteinizing hormone 
C) oxytocin 
D) progesterone 
E) prolactin 
A) estrogen 
B) luteinizing hormone 
C) oxytocin 
D) progesterone 
E) prolactin

Question 18

After gastrulation, the next event in human embryo formation is ____.

Accepted Answer

A) formation of the bones 
B) formation of the neural tube 
C) the initiation of the heart beat 
D) formation of the pharyngeal arches 
E) apoptosis between fingers and toes 
A) formation of the bones 
B) formation of the neural tube 
C) the initiation of the heart beat 
D) formation of the pharyngeal arches 
E) apoptosis between fingers and toes

Question 19

During a vasectomy, which structure is cut?

Accepted Answer

A) epididymis 
B) prostate 
C) seminiferous tubules 
D) seminal vesicles 
E) vas deferens 
A) epididymis 
B) prostate 
C) seminiferous tubules 
D) seminal vesicles 
E) vas deferens

Question 20

Typically, one sperm fertilizes an oocyte because ____.

Accepted Answer

A) an acid solution is released that kills all other sperm 
B) special organelles within the oocyte eject more than one sperm 
C) changes occur to the oocyte's protein coat that prevent further penetration 
D) follicle cellular space is only wide enough for one sperm 
E) usually only one sperm arrives at the oocyte 
A) an acid solution is released that kills all other sperm 
B) special organelles within the oocyte eject more than one sperm 
C) changes occur to the oocyte's protein coat that prevent further penetration 
D) follicle cellular space is only wide enough for one sperm 
E) usually only one sperm arrives at the oocyte

Exam 26: Reproduction and Development

A penis becomes erect because of ____.

What are somites?

Why is more than one sperm needed for fertilization to occur, when only one sperm actually penetrates the egg?

Which structure is responsible for keeping the fetus from slipping out of the uterus prematurely?

Protein digesting enzymes are released from the sperm head when it binds to the ____.

In humans, the fluid immediately surrounding the embryo is contained in the _____.

A fully functional corpus luteum secretes ____.

The first child conceived using IVF was born in ____.

Sperm use ____ for their energy source.

Women with polycystic ovarian syndrome have difficulty conceiving because ____.

Mammals nourish their embryos by means of a ____.

Inside the penis, there are ____ cylinders of spongy tissue.

Which structure becomes part of the placenta?

Which of the listed contraceptive methods is the most effective?

Fertilization in humans occurs in the ____.

Menstrual flow results in the discharge of ____.

Which hormone prepares the reproductive tract for pregnancy?

After gastrulation, the next event in human embryo formation is ____.

During a vasectomy, which structure is cut?

Typically, one sperm fertilizes an oocyte because ____.

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Plant Form and Function

Plant Reproduction and Development

Filters