BIO 172 UH MANOA EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST 2025
ALREADY GRADED A+
Which of the following is not a role of blood in humans?
A) transport nutrients
B) transport carbon dioxide
C) transport disease-fighting agent
D) transport hormones
E) serves as a reservoir for urine - ANSWERS-E) serves as a reservoir for urine
What is the role of pre-capillary sphincters?
,A) increase blood pressure in capillaries
B) direct blood away from areas where it is not needed
C) ensure that aggregated clumps of red blood cells cannot enter capillaries
D) help conserve angular momentum
E) prevent venous blood from mixing with blood from arteries - ANSWERS-B)
direct blood away from areas where it is not needed
Antigens are...
A) produced by antigen-presenting cells (APC's)
B) produced by B-cells
C) produced by antibodies
D) foreign molecules that initiate an immune response - ANSWERS-D) foreign
molecules that initiate an immune response
Which type of cell produces histamine, an important contributor to allergic
responses and inflammation?
A) T-cells
B)neutrophils
C)mast cells
D) natural killer cells - ANSWERS-C) mast cells
,Major histocompatibility class (MHC) I molecules
A) are released into blood plasma and bind invading pathogens there, causing
their cells to rupture
B) are released into blood plasma and bind invading pathogens there, causing
them to form clumps that are more easily discovered by natural killer cells
C) are located on surfaces of cells and display fragments of proteins from
pathogens, helping to initiate an immune response against the pathogen
D)are most commonly expressed by red blood cells where they are responsible
for incompatibility among different blood types
E) cause allergic responses as well as initiating fever when they cross the blood-
brain barrier and bind to the hypothalamus - ANSWERS-C) are located on
surfaces of cells and display fragments of proteins from pathogens, helping to
initiate an immune response against the pathogen
Which immune cell type releases perforin and granzyme in response to contact
with a cell presenting a detected antigen fragment (bound to MHC I molecules)
on the surface of the contacted cell?
A) B-cell
B) mast cell
C) antigen presenting cells (APC)
D) macrophage
, Which is true about animal evolutionary history?
A) the Cambrian explosion led to the appearance of the Ediacaran biota
B) the Cambrian explosion occurred around 100 MYA
C) several extant phyla first appear in the fossil record from the Cambrian
period
D) many fossils dating from the Cambrian explosion represent species that
survive today
E) the Cambrian explosion was caused by a rapid increase in Earth's atmospheric
nitrogen - ANSWERS-C) Several extant phyla first appear in the fossil record
from the Cambrian Period
Ediacaran Period - ANSWERS-before Cambrian period, about 635-543 MYA
Cambrian Explosion/Period - ANSWERS-the most rapid evolution of new animal
phyla and animal diversity in Earth's history about 542-488 MYA
Which of the following is not typical of most animals?
A) Specialized tissues
B) a stage of development called gastrulation
C) possession of hox genes
D) alternation of generations between diploid and haploid lifestages
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST 2025
ALREADY GRADED A+
Which of the following is not a role of blood in humans?
A) transport nutrients
B) transport carbon dioxide
C) transport disease-fighting agent
D) transport hormones
E) serves as a reservoir for urine - ANSWERS-E) serves as a reservoir for urine
What is the role of pre-capillary sphincters?
,A) increase blood pressure in capillaries
B) direct blood away from areas where it is not needed
C) ensure that aggregated clumps of red blood cells cannot enter capillaries
D) help conserve angular momentum
E) prevent venous blood from mixing with blood from arteries - ANSWERS-B)
direct blood away from areas where it is not needed
Antigens are...
A) produced by antigen-presenting cells (APC's)
B) produced by B-cells
C) produced by antibodies
D) foreign molecules that initiate an immune response - ANSWERS-D) foreign
molecules that initiate an immune response
Which type of cell produces histamine, an important contributor to allergic
responses and inflammation?
A) T-cells
B)neutrophils
C)mast cells
D) natural killer cells - ANSWERS-C) mast cells
,Major histocompatibility class (MHC) I molecules
A) are released into blood plasma and bind invading pathogens there, causing
their cells to rupture
B) are released into blood plasma and bind invading pathogens there, causing
them to form clumps that are more easily discovered by natural killer cells
C) are located on surfaces of cells and display fragments of proteins from
pathogens, helping to initiate an immune response against the pathogen
D)are most commonly expressed by red blood cells where they are responsible
for incompatibility among different blood types
E) cause allergic responses as well as initiating fever when they cross the blood-
brain barrier and bind to the hypothalamus - ANSWERS-C) are located on
surfaces of cells and display fragments of proteins from pathogens, helping to
initiate an immune response against the pathogen
Which immune cell type releases perforin and granzyme in response to contact
with a cell presenting a detected antigen fragment (bound to MHC I molecules)
on the surface of the contacted cell?
A) B-cell
B) mast cell
C) antigen presenting cells (APC)
D) macrophage
, Which is true about animal evolutionary history?
A) the Cambrian explosion led to the appearance of the Ediacaran biota
B) the Cambrian explosion occurred around 100 MYA
C) several extant phyla first appear in the fossil record from the Cambrian
period
D) many fossils dating from the Cambrian explosion represent species that
survive today
E) the Cambrian explosion was caused by a rapid increase in Earth's atmospheric
nitrogen - ANSWERS-C) Several extant phyla first appear in the fossil record
from the Cambrian Period
Ediacaran Period - ANSWERS-before Cambrian period, about 635-543 MYA
Cambrian Explosion/Period - ANSWERS-the most rapid evolution of new animal
phyla and animal diversity in Earth's history about 542-488 MYA
Which of the following is not typical of most animals?
A) Specialized tissues
B) a stage of development called gastrulation
C) possession of hox genes
D) alternation of generations between diploid and haploid lifestages
