QUESTIONS & ACCURATE ANSWERS
RATED 100% CORRECT
which of the following helps to prevent pathogens from invading the body?
a) histamines
b)mucus
c)t-cells
d)macrophages - CORRECT ANSWER mucus, skin, secretion (first step).
A bacteria cell enters the body through a cut in the skin. Which of the following
describes the immune response that would occur next?
a) cytotoxic t-cells
b)helper t-cells are activated
c)histamines are released
d) antigens are released - CORRECT ANSWER histamines (inflammatory response)
are released
Which of the following types of cells produce antibodies?
a) T-cell
b)plasma-cells
c)memory cells
d)macrophages - CORRECT ANSWER plasma-cells (The helper T cell induces
the B cell to multiply rapidly into secretory cells called "plasma cells." These plasma
cells will then produce large amounts of an antibody that can bind the antigen.)
which of the following best describes the purpose of a vaccine?
A.)To produce extra inflammatory responses such as the release of histamines
B.)To practice passive immunity
C.)To produce antibodies in case of future infection
D.)To increase macrophage production - CORRECT ANSWER to produce antibodies
in case of future infection. (Vaccinations introduce antigens, which are weakened or
killed, to elicit an immune response.)
Which of the following parts of the male genitourinary system also transports sperm?
A. Ureter
B. Urethra
C. Uterus
D. Urinary bladder - CORRECT ANSWER urethra (In males, the urethra passes
through the penis and also carries sperm. Females have a much shorter urethra)
,Which of the following waste products from digestion does the kidney remove?
A. Nitrogen
B. Sodium chloride
C. Protein
D. Carbon - CORRECT ANSWER nitrogen nitrogenous waste from protein digestion is
toxic and must be removed because it will form ammonia.
Which of the following best describes the outcome if the kidneys stopped functioning?
A. Blood would increase its carbon dioxide concentration.
B. Blood would fill with waste and the human body would not be able to maintain
homeostasis.
C. The kidneys would fill with urine.
D. The frequency in which a human excretes urine would increase. - CORRECT
ANSWER blood would fill with waste and the human body would not be able to maintain
homeostasis.
Which of the following structures is the functional unit of the kidney?
A. Renal capillaries
B. Glomerulus
C. Nephron
D. Cortex - CORRECT ANSWER nephron (The functional unit of the kidney is the
nephron.)
In two to three sentences, explain the purpose of blood pressure in the kidney. -
CORRECT ANSWER The pressure of the blood helps the glomerulus
filter out wastes and return vital nutrients through the renal vein to the blood. Nephrons
are a system of microscopic tubes that use
various pressure levels to remove wastes and reabsorb important molecules and water.
Which of the following lists the primary parts of the heart?
A. Blood cells
B. Muscle tissue split into two chambers
C. Muscle tissue split into four chambers
D. Four ventricles - CORRECT ANSWER muscle tissue split into four chambers
Which of the following blood components is responsible for transporting oxygen?
A. Red blood cells
B. Plasma
C. Dissolved gases
D. Leukocytes - CORRECT ANSWER Red blood cells ( RBC contain hemoglobin and
transport oxygen from the lungs to the rest of the body.)
Which of the following chambers pumps blood toward the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
, D. Right ventricle - CORRECT ANSWER RV. (The right ventricle pumps the blood
toward the lungs, where it picks up oxygen and loses carbon dioxide.)
Which of the following statements best describes the function of veins?
A. Veins carry deoxygenated blood.
B. Veins carry oxygenated blood.
C. Veins carry blood back to the heart.
D. Veins carry blood away from the heart. - CORRECT ANSWER (C) Then, the
oxygenated blood
returns to the heart through veins.
In two to three sentences, describe two chambers of the heart that have thicker walls.
Why would
these chambers be thicker? - CORRECT ANSWER right and left ventricles was thick-
walled because they pump blood towards the whole body which needs more energy
then pumping blood into the heart itself.
Which of the following describes the function of the ribosome?
a. Protein synthesis
b. Energy production
c. Cell movement
d. Storage of molecules - CORRECT ANSWER protein synthesis
Because muscle cells require large amounts of energy to function correctly, which
organelles would
be prevalent in those types of cells?
a. Ribosomes
b. Mitochondria
c. Cytoskeleton
d. Cell membrane - CORRECT ANSWER mitochondria (Skeletal muscle cells contain
high numbers of MITOCHONDRIA because of the energy needed for movement.)
Which of the following organelles is responsible for storing genetic information?
a. Nucleus
b. Ribosomes
c. Cell membrane
d. Lysosomes - CORRECT ANSWER nucleus ( nucleus holds all genetic information
such as DNA, and conducts the building of ribosomes)
In the human body, which of the following organs is in a superior position to the lungs?
a. Stomach
b. Brain
c. Spleen
d. Heart - CORRECT ANSWER brain