Question

1 of 45

Hormones regulate __________.

growth

reproduction

water balance

metabolism

all of the above

Question

2 of 45

The function of the sphincter at the downstream end of the stomach is to __________.

retain acid chime in the stomach until pepsin digestion is complete

release bile into the duodenum when chime is present

release pancreatic secretions into the duodenum when chime is present

release bile and pancreatic secretions into the duodenum when chime is present

release acid chime into the duodenum in periodic squirts

Question

3 of 45

Which of the following best describes the relationship of insulin to glucagon?

They work together to prepare the body to deal with stress.

Insulin stimulates the pancreas to secrete glucagon.

High levels of insulin inhibit pancreatic secretion of glucagon.

They are antagonistic hormones.

Insulin is a steroid hormone; glucagon is a protein hormone.

Question

4 of 45

Maintaining the volume and composition of body fluids is the direct responsibility of which of the following systems?

integumentary

immune

digestive

urinary

respiratory

Question

5 of 45

In vitro fertilization __________.

can be used to select the sex of an embryo

permits the screening of embryos for genetic defects

can use eggs that have been frozen

all of the above

none of the above

Question

6 of 45

Antibodies __________.

are shaped like the letter B

are generalists in that any antibody can bind to any antigen

consist of three polypeptide chains

assist in destroying particular antigens

All of the above are true

Question

7 of 45

Which of the following is one of the body’s first lines of defense against infection?

a group of nonspecific antibodies

several nonspecific amino acid toxins

several nonspecific obstacles such as skin and mucous membranes

increased production of certain hormones and changes in the blood circulation

an increasing in the breathing rate

Question

8 of 45

A vasectomy __________.

prevents the production of sperm in the testes

prevents the production of semen

prevents the movement of sperm into the urethra

prevents a man from having an erection

is an effective method to prevent the transmission of sexually transmitted diseases

Question

9 of 45

The appendix, bone marrow, thymus, and spleen are all parts of the ______ system.

immune

circulatory

excretory

renal

digestive

Question

10 of 45

Which type of tissue forms a communication and coordination system within the body?

nervous

blood

epithelial

connective

muscle

Question

11 of 45

Why do diseases involving widespread infection usually result in a fever?

The rapid multiplication of the invading microorganisms results in extra heat production.

The inflammatory and immune responses result in extra heat production.

The invading microorganisms trick the brain’s temperature control center into raising the temperature so they can grow better.

The brain’s temperature control center responds to inflammation by creating a hot environment unfavorable to microorganisms.

Fevers insure that you will stay in bed longer so that your body can recover from the illness.

Question

12 of 45

When the wall of the stomach fails to protect itself from erosion by gastric juice, the result is __________.

heartburn

reverse peristalsis

a duodenal ulcer

nausea

a gastric ulcer

Question

13 of 45

Most of the oxygen in the blood is transported by __________.

platelets

plasma

platelets

hemoglobin

serotonin

Question

14 of 45

What is the main function of connective tissue?

support

movement

protection

response to stimuli

covering

Question

15 of 45

Which of the following organs is NOT in the abdominal cavity?

stomach

liver

intestine

appendix

heart

Question

16 of 45

Temperature regulation, hormone distribution, and exchanging nutrients and wastes with the interstitial fluid are all functions of the __ system.

respiratory

digestive

immune

circulatory

nervous

Question

17 of 45

Most nutrient absorption occurs in which part of the digestive system?

stomach

liver

pancreas

small intestine

large intestine

Question

18 of 45

What are the four fundamental types of body tissues?

connective, cardiac, nervous, and adipose tissue.

connective, epithelial, nervous, and muscle tissue.

epithelial, hormonal, cellular, and bone tissue.

epitheli    al, glandular, muscle, and nervous tissue.

connective, neurons, muscle, and cartilage tissue.

Question

19 of 45

Homeostasis _______________.

is the maintenance of a constant internal state

only comes into play when you are ill

is a pathological condition

is the maintenance of a relatively stable internal environment

is the way the internal environment influences the external environment

Question

20 of 45

When you cut yourself, the damaged cells immediately release which of the following chemical alarm signals?

interferon

complement

histamine

pyrogens

anti-interferon

Question

21 of 45

The four stages of food processing are, in order:

ingestion, absorption, elimination, digestion

ingestion, elimination, digestion, absorption

ingestion, digestion, absorption, elimination

digestion, absorption, ingestion, elimination

elimination, absorption, digestion, ingestion

Question

22 of 45

All veins carry __________.

blood toward the heart

interstitial fluid

blood away from the heart

oxygen-rich blood

oxygen-poor blood

Question

23 of 45

Once an action potential is triggered, the first major chemical change is __________.

a reversal of the membrane polarity, with the interior of the cell becoming positive

a reversal of the membrane polarity, with the interior of the cell becoming negative

an increase in the negative charge inside the neuron

an increase in the positive charge inside the neuron

propagation of an impulse

Question

24 of 45

White blood cells play a particularly important role in __________.

carrying oxygen

carrying carbon dioxide

blood clotting

hemoglobin transport

fighting infections

Question

25 of 45

Which one of the following types of tissue stores fat in the body?

blood

cartilage

bone

adipose

fibrous connective tissue

Question

26 of 45

The basic structural and functional part of the kidney is the __________.

Bowman’s capsule

nephron

glomerulus

urinary bladder

ascending aorta

Question

27 of 45

Why are human testes located in an external sac rather than in the abdominal cavity?

to shorten the distance that semen must travel during ejaculation

to shorten the distance that sperm must swim during insemination

so the testes can be kept at a constant temperature

so the testes can be kept cooler than the body’s interior

so the testes can enlarge at sexual maturity

Question

28 of 45

In a human male reproductive system:

a circumcision removes a portion of the scrotum.

the vas deferens conducts sperm between the testis and epididymis.

the sperm travel through the urethra during ejaculation.

sperm mature in the prostate gland.

sperm are produced in the bladder and released through the scrotum.

Question

29 of 45

In the human respiratory system, gas exchange occurs across the cells of the _____.

diaphragm

trachea

bronchi

pharynx

alveoli

Question

30 of 45

The correct term to describe the production of the human sperm is __________.

spermogenerator

oogenesis

spermatogenesis

sperm-production

gametogeneric

Question

31 of 45

Outnumbering neurons by up to 50 to 1, which cells protect, insulate, and reinforce neurons?

sensory cells

motor cells

axon cells

satellite cells

supporting cells

Question

32 of 45

Trace the path of a red blood cell in a circuit that takes it from the capillary bed of the right kidney to the capillary bed of the left kidney.

capillary bed of right kidney….venules….veins….right atrium….right ventricle….pulmonary arteries….capillaries of lungs….pulmonary veins….left atrium….left ventricle….aorta….arteries….arterioles…. capillary bed of left kidney

capillary bed of right kidney….venules….veins….right atrium….right ventricle…. pulmonary veins….capillaries of lungs….pulmonary arteries….left atrium….left ventricle…..aorta….arteries….arterioles….capillary bed of left kidney

capillary bed of right kidney….venules….v eins…..left atrium….left ventricle…. pulmonary arteries….capillaries of lungs….pulmonary veins….right atrium…. right ventricle….aorta….arteries…..arterioles….capillary bed of left kidney

capillary bed of right kidney….arterioles….arteries….aorta….right atrium….right ventricle….pulmonary arteries….capillaries of lungs….pulmonary veins….left atrium ….left ventricle….veins….venules….capillary bed of left kidney

capillary bed of right kidney….venules….veins….left atrium….left ventricle…. pulmonary veins….capillaries of lungs….pulmonary arteries….right atrium…. right ventricle….aorta….arteries….arterioles….capillary bed of left kidney

Question

33 of 45

A vaccine contains __________.

a killed pathogen

weakened pathogen

non-infective fragments of a pathogen

all of the above may be used in a vaccine

Vaccines only contain genetically-modified virus particles

Question

34 of 45

Which of the following organs of the digestive system is different from the other four because it does NOT produce any secretions that aid in the digestive process?

stomach

liver

esophagus

pancreas

Important secretions are released by all of the above organs.

Question

35 of 45

Which of the following is NOT a true statement about the human female?

She produces all the eggs that she ever will before she is born.

She will normally produce more gametes than her male counterpart.

It is possible that more than one egg will be released at ovulation.

The process of meiosis may take 30 to 50 years to complete.

The ovary is the primary reproductive organ.

Question

36 of 45

What are the two main divisions of the skeletal system?

cranial and axial

vertebral and appendicular

appendicular and axial

axial and articular

articular and cranial

Question

37 of 45

What moves the human egg through the oviduct?

the beating of the egg’s cilia

the beating of the egg’s flagella

rhythmic contractions of the oviduct

rhythmic contractions of the uterus

the beating of cilia in the oviduct

Question

38 of 45

When you examine fluid that you have drawn from a blood vessel, you find that it is relatively high in carbon dioxide and waste products. Assuming that the fluid comes from a healthy individuaBiol 101 – DNA and Principles of Inheritance quiz,Biology,$25.00,

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