Question Question 1 Which of the following is not true regarding the circulatory system? Answer

19 Jun Question Question 1 Which of the following is not true regarding the circulatory system? Answer

Question
Question 1
Which of the following is not true regarding the circulatory system?
Answer

This system ensures that waste products are removed from all tissues of the body.

This system is made up of the blood vessels, heart, and blood.

The circulatory system has an important role in the exchange of gases in the lungs.

During fetal development, the circulatory system develops from the lymphatic system.

This system carries excess water and salts to the urinary system.
1 points

Question 2
Which of the following sources of scientific information is the most technical?
Answer

general interest news magazines

newspapers

nonfictional books

peer-reviewed journals

science magazines
1 points

Question 3
A farmer wants to improve crop yield in his fields by testing the effectiveness of a new pesticide available on the market. Which of the following is the best control for this experiment?
Answer

a higher concentration of new pesticide used on the control field than the experimental field

more shade on the control field than the experimental field

less new pesticide used on the control field than the experimental field

more water on the control field than the experimental field

no new pesticide used on the control field; new pesticide used only on the experimental field
1 points

Question 4
Which of the following is considered to be important in protecting individuals from chemicals?
Answer

Type of chemicals they are exposed to

The potential levels of exposure

The toxicity of the chemicals

All of the above
1 points

Question 5
Hormones are specific to particular tissues because
Answer

they will only interact with target cells at a synapse.

they are released next to target tissues, so they cannot interact with other cells.

target tissues display the appropriate receptor for a particular hormone.

they can only be released following depolarization of the target cell.

all of the above
1 points

Question 6
An advantage of the systems-based approach is the recognition that studies relevant to environmental change and infectious disease are embedded within a wider web of interactions.
Answer
True

False

1 points

Question 7
Common side effects associated with chemotherapy are due to:
Answer

fevers induced by the chemicals.

death of cancer cells and their subsequent removal from the body.

change in blood pH caused by the chemicals.

death of normal cells caused by the chemicals.

destruction of RNA in most normal cells.
1 points

Question 8
The Internet has been used as a rapid means to obtain information, including scientific ideas, but generally is less reliable tha print media because
Answer

at present, the Internet is less regulated than broadcast and print media.

anyone can post “scientific” information, regardless of whether the information is misleading or not true.

individuals and/or groups maiy post information to promote their own personal interests rather than ideas that have been tested through the scientific process.

All of the above are correct.

skepticism.
1 points

Question 9
A mass of rapidly dividing cells that have potentially lost the ability to regulate cell division is
Answer

a neoplasm

angiogenesis

dysplasia

hyperplasia

keratosis
1 points

Question 10
Most surveillance systems are passive and disease specific.
Answer
True

False

1 points

Question 11
The type of muscle responsible for involuntary contractions of the stomach is_____muscle.
Answer

smooth

cardiac

intercalated

striated

skeletal
1 points

Question 12
Which of the following defines sub-chronic toxicity correctly?
Answer

Effects of single dose/multiple dose exposures during a 24 hr period.

Effects of multiple dose exposures during a 14 day period.

Effects of multiple dose exposures during a 90 day period.

Effects of multiple dose exposures during more than 90 days.
1 points

Question 13
Which of the following is not a symptom of asthma?
Answer

tightness in the chest

coughing while exercising

wheezing

choking

shortness of breath
1 points

Question 14
Which of the following is a true statement?
Answer

Molecules are considered to be the smallest unit capable of exhibiting all the characteristics of life.

Cells arise spontaneously from nonliving chemical elements.

All living things are made up of at least one cell.

Cells are incapable of maintaining homeostasis because they are too small.

Organisms composed of many cells are unicellular.
1 points

Question 15
In order for a hormone to cause a response, it must first bind to an appropriate receptor on its target cell.
Answer
True

False

1 points

Question 16
A student needs information from the National Institutes of Health, a government agency. Which of the following endings should he or she look for in the address?
Answer

edu

com

gov

nih

org
1 points

Question 17
Uptake of blood glucose by liver cells is stimulated by
Answer

ADH

prolactin

parathyroid hormone

glucagon

insulin
1 points

Question 18
Carbohydrates are characterized by
Answer

being composed of carbon, hydrogen, and nitrogen.

releasing energy when their peptide bonds are broken.

being indigestible by most organisms.

possessing a carbon backbone that is hydrated.
1 points

Question 19