If a pathogen penetrates the skin barrier, which immune response would occur first?

The temperature would increase at the infection site.

Mucus would be produced to prevent further infection.

Antibodies would develop to make a vaccine.

Platelets would increase the flow of blood from the wound.

Embryonic development is divided into trimesters. Each list below shows the development that normally occurs during one trimester, though the lists are not in chronological order: 1. fingernails, taste buds, swallowing, sleep cycle, toenails 2. eyelids, heart beats, makes fist, movement 3. eyes open and close, fastest weight gain Which of the following shows the lists in the correct order?

First Trimester - 2; Second Trimester - 1; Third Trimester - 3

First Trimester - 2; Second Trimester - 3; Third Trimester - 1

First Trimester - 1; Second Trimester - 3; Third Trimester - 2

First Trimester - 3; Second Trimester - 2; Third Trimester - 1

Mary feels sick for a week and decides to go to the doctor. The doctor tells her that she has a viral infection and does not prescribe antibiotics to treat her illness. Within a couple of days Mary is feeling better. Which statement best describes Mary's path to recovery?

The specific immune response produced antibodies that rid her body of the viral infection after it learned the properties of the viral molecule.

Mary was already feeling better and didn't need to go to the doctor's office.

Antibiotics produced by Mary's body stimulated her immune system to produce enough antibodies against the virus and destroy the viral infection.

The nonspecific immune response destroyed the virus through inflammation two weeks after Mary went to the doctor's office

The graph shows one factor that can affect the relative thickness (viscosity) of human blood when plasma volume is kept constant. What effect does the percentage of red blood cells have on the viscosity of blood?

Increasing the percentage of red blood cells causes blood viscosity to increase

Decreasing the percentage of red blood cells causes plasma levels to increase and blood viscosity to decrease.

Increasing the percentage of red blood cells causes blood viscosity to decrease.

Decreasing the percentage of red blood cells causes plasma levels to increase and blood viscosity to increase.

Vascular resistance is due to friction between blood and the walls of the blood vessel. Which of the following causes low vascular resistance?

cholesterol levels within normal range

Fetal health screenings have been developed to test for a variety of genetic, environmental, and pathogenic diseases. Which of the following would be a logical argument for conducting a genetic screening rather than a pathogenic screening to identify a disease or condition?

A genetically carried disease or condition, which can be treated with gene therapy, should be identified early to increase the odds of an infant's survival; whereas a mother's immunity would protect an infant from pathogens.

A genetically carried disease or condition, which is contagious, should be identified early to increase the odds of containment; whereas a pathogenically transmitted condition will confine itself to one population.

A genetically carried disease or condition, which can be treated by altering environmental factors, would have no bearing on pathogen transmission.

A genetically carried disease or condition, which can be treated with a vaccination, should be identified early to increase the odds of an infant's survival; whereas a mother's immunity would protect an infant from pathogens.

Kanamycin is an antibiotic that has been used widely to treat infections caused by a specific type of bacteria. A doctor prescribes kanamycin, but the drug is ineffective at treating the infection. What is the most likely cause of the antibiotic's decreased effectiveness?

These bacteria are the offspring of bacteria with a mutation which imparted kanamycin resistance to the population.

These bacteria are not affected by kanamycin because they do not have ribosomes.

These bacteria were outcompeted by another species in the presence of kanamycin.

These bacteria are not affected by kanamycin because they are eukaryotic cells.

According to the Centers for Disease Control and Prevention (CDC), breast cancer is the most common cancer affecting women in the United States. It makes up nearly 38 percent of the top ten types of cancer diagnosed among women. Which of the following statements regarding risk factors for breast cancer is true?

As environmental factors contributing to breast cancer are identified and changed, the overall incidence of breast cancer may decrease.

By changing environmental factors, a person can lower the probability that their child will inherit a gene linked with breast cancer.

A person must have a family history of breast cancer in order to develop the disease.

There is no chance that a person will develop breast cancer if smoking, alcohol use, and poor diet are avoided.

In the human immune system, there are physical and chemical defenses that protect against viruses, bacteria, and other pathogens. Which statement describes an event that occurs in a nonspecific immune response?

Phagocytes and macrophages engulf foreign materials.

T-lymphocytes eliminate infected body cells and tumor cells.

B-cells produce antibodies that will aid in future viral infections.

A vaccine is injected to a person to prevent the flu

Unit 9 Human Body Systems Review

Authored by LUCY MORISSET

Biology

9th - 10th Grade

NGSS covered

Used 389+ times

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20 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of the structure labeled #2?

provides a pathway for the egg to travel

gives support and nutrients to the fertilized egg

provides a site for egg implantation

produces and releases eggs

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is formed immediately after a sperm cell fertilizes an egg cell?

Zygote

fetus

embryo

baby

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cardiac output is the amount of blood pumped by the heart in one minute. Which of these will increase cardiac output?

decreased metabolic activity

increased resistance in blood vessels

increased physical activity

decreased blood volume

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which labeled structure is the cerebellum?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Many people have received the measles vaccine, which can prevent this very serious or even fatal disease. How does receiving a measles vaccine help to protect a person from getting the measles?

The vaccine inserts genes into body cells to fight the virus that causes the measles.

The vaccine adds a chemical to the body that is poisonous to the virus that causes the measles.

The vaccine causes the immune system to produce antibodies to the virus that causes the measles.

The vaccine prevents the virus that causes the measles from entering the body.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Plaque can build up along the walls of the arteries for many years, which statement describes a result of plaque building up in the arteries of an individual?

Cells receive less oxygen due to a decrease in blood flow.

The arteries become more elastic.

The heart beats slower.

An increase in the blood flow to the affected area of the body occurs.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The blockages shown at A and B would most likely interfere with the ability to do which of the following?

transport gametes

produce mature gametes

express secondary sex characteristics

eliminate waste products through the urethra

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