Question 1

During puberty, the secretion of GnRH causes the secretion of ________, which in turn stimulate(s) the production of sex hormones.

Accepted Answer

A)  LH and FSH 
B)  oxytocin and prolactin 
C)  insulin 
D)  growth hormone 
E)  oxytocin and growth hormone 
A)  LH and FSH 
B)  oxytocin and prolactin 
C)  insulin 
D)  growth hormone 
E)  oxytocin and growth hormone

Question 2

Mesoderm gives rise to

Accepted Answer

A)  ectoderm 
B)  epidermis and dermis 
C)  muscle and connective tissues 
D)  the nervous system 
E)  liver and pancreas 
A)  ectoderm 
B)  epidermis and dermis 
C)  muscle and connective tissues 
D)  the nervous system 
E)  liver and pancreas

Question 3

For fertilization to occur in humans, the sperm cells have a long journey to complete before reaching an egg. If a sperm reaches an egg, fertilization is still not complete. What events must happen for fertilization to be complete?

Accepted Answer

Once a sperm reaches an egg, the sperm m

Question 4

If an embryo implants in an organ other than the uterus, the pregnancy is said to be ________.

Accepted Answer

The answer of If an embryo implants in an organ...

Question 5

In the prenatal diagnostic technique amniocentesis,

Accepted Answer

A)  a needle is inserted into the umbilical cord to collect fetal blood for screening 
B)  a thin, flexible tube connected to a needle is inserted through the vagina and into the uterus to collect a tissue sample 
C)  fetal blood is collected directly from the chorionic villi near the cervix 
D)  a needle is inserted through the abdominal wall to collect amniotic fluid containing fetal cells 
E)  the procedure cannot be performed after the fifteenth week of gestation 
A)  a needle is inserted into the umbilical cord to collect fetal blood for screening 
B)  a thin, flexible tube connected to a needle is inserted through the vagina and into the uterus to collect a tissue sample 
C)  fetal blood is collected directly from the chorionic villi near the cervix 
D)  a needle is inserted through the abdominal wall to collect amniotic fluid containing fetal cells 
E)  the procedure cannot be performed after the fifteenth week of gestation

Question 6

If you have ever had a chance to witness a child birth, then you know it is an amazing event. However, even after the baby has been removed from the mother, her work is not complete in terms of labor. Why?

Accepted Answer

Child birth has three distinct stages, w

Question 7

Most sperm cells die in the vagina when entering the female's body because

Accepted Answer

A)  the sperm cannot pass through the mucus 
B)  the female's reproductive tract is protected by digestive enzymes 
C)  of the low pH of the vagina 
D)  the sperm cells have not yet been activated to swim 
E)  macrophages from the female's immune system destroy all non-self cells 
A)  the sperm cannot pass through the mucus 
B)  the female's reproductive tract is protected by digestive enzymes 
C)  of the low pH of the vagina 
D)  the sperm cells have not yet been activated to swim 
E)  macrophages from the female's immune system destroy all non-self cells

Question 8

While normally one secondary oocyte ruptures from an ovarian follicle at ovulation, what will be the result if two are released and both are fertilized?

Accepted Answer

A)  identical twins 
B)  single birth because only one secondary oocyte can be fertilized 
C)  single birth because even though both may be fertilized, only one will be able to complete development 
D)  fraternal twins 
A)  identical twins 
B)  single birth because only one secondary oocyte can be fertilized 
C)  single birth because even though both may be fertilized, only one will be able to complete development 
D)  fraternal twins

Question 9

With the exception of cancer cells, most cells divide approximately ________ times before they stop reproducing.

Accepted Answer

A)  2-4 
B)  10-12 
C)  20-25 
D)  50-90 
E)  100-200 
A)  2-4 
B)  10-12 
C)  20-25 
D)  50-90 
E)  100-200

Question 10

Which organ system is not functional until birth and must become fully functional immediately?

Accepted Answer

A)  excretory system (kidneys) 
B)  respiratory system 
C)  cardiovascular system 
D)  muscular system 
E)  skeletal system 
A)  excretory system (kidneys) 
B)  respiratory system 
C)  cardiovascular system 
D)  muscular system 
E)  skeletal system

Question 11

The cell formed by the union of egg and sperm during fertilization is the ________.

Accepted Answer

The answer of The cell formed by the union of...

Question 12

Fertilization is completed when the sperm nucleus fuses with the ________.

Accepted Answer

The answer of Fertilization is completed when the sperm nucleus...

During puberty, the secretion of GnRH causes the secretion of ________, which in turn stimulate(s) the production of sex hormones.

Mesoderm gives rise to

For fertilization to occur in humans, the sperm cells have a long journey to complete before reaching an egg. If a sperm reaches an egg, fertilization is still not complete. What events must happen for fertilization to be complete?

If an embryo implants in an organ other than the uterus, the pregnancy is said to be ________.

In the prenatal diagnostic technique amniocentesis,

If you have ever had a chance to witness a child birth, then you know it is an amazing event. However, even after the baby has been removed from the mother, her work is not complete in terms of labor. Why?

Most sperm cells die in the vagina when entering the female's body because

While normally one secondary oocyte ruptures from an ovarian follicle at ovulation, what will be the result if two are released and both are fertilized?

With the exception of cancer cells, most cells divide approximately ________ times before they stop reproducing.

Which organ system is not functional until birth and must become fully functional immediately?

The cell formed by the union of egg and sperm during fertilization is the ________.

Fertilization is completed when the sperm nucleus fuses with the ________.

Human Biology, Science, and Society

The Chemistry of Living Things

Structure and Function of Cells

From Cells to Organ Systems

The Skeletal System

The Muscular System

Blood

Heart and Blood Vessels

The Immune System and Mechanisms of Defense

The Respiratory System: Exchange of Gases

The Nervous System: Integration and Control

Sensory Mechanisms

The Endocrine System

The Digestive System and Nutrition

The Urinary System

Reproductive Systems

Cell Reproduction and Differentiation

Cancer: Uncontrolled Cell Division and Differentiation

Genetics and Inheritance

DNA Technology and Genetic Engineering

Evolution and the Origins of Life

Ecosystems and Populations

Human Impacts, Biodiversity, and Environmental Issues

Filters

Exam 21: Development and Aging

During puberty, the secretion of GnRH causes the secretion of ________, which in turn stimulate(s) the production of sex hormones.

Mesoderm gives rise to

For fertilization to occur in humans, the sperm cells have a long journey to complete before reaching an egg. If a sperm reaches an egg, fertilization is still not complete. What events must happen for fertilization to be complete?

If an embryo implants in an organ other than the uterus, the pregnancy is said to be ________.

In the prenatal diagnostic technique amniocentesis,

If you have ever had a chance to witness a child birth, then you know it is an amazing event. However, even after the baby has been removed from the mother, her work is not complete in terms of labor. Why?

Most sperm cells die in the vagina when entering the female's body because

While normally one secondary oocyte ruptures from an ovarian follicle at ovulation, what will be the result if two are released and both are fertilized?

With the exception of cancer cells, most cells divide approximately ________ times before they stop reproducing.

Which organ system is not functional until birth and must become fully functional immediately?

The cell formed by the union of egg and sperm during fertilization is the ________.

Fertilization is completed when the sperm nucleus fuses with the ________.

Human Biology, Science, and Society

The Chemistry of Living Things

Structure and Function of Cells

From Cells to Organ Systems

The Skeletal System

The Muscular System

Blood

Heart and Blood Vessels

The Immune System and Mechanisms of Defense

The Respiratory System: Exchange of Gases

The Nervous System: Integration and Control

Sensory Mechanisms

The Endocrine System

The Digestive System and Nutrition

The Urinary System

Reproductive Systems

Cell Reproduction and Differentiation

Cancer: Uncontrolled Cell Division and Differentiation

Genetics and Inheritance

DNA Technology and Genetic Engineering

Evolution and the Origins of Life

Ecosystems and Populations

Human Impacts, Biodiversity, and Environmental Issues

Filters