BIOLOGY 109- -FINAL STUDY GUIDE
REVIEW EXAM #3 QUESTIONS AND
ANSWERS
Negative pressure breathing in humans relies on the following - ANSWER-
contraction of the rib muscles and diaphragm. Concerted change in the volume of
the thoracic cavity and lungs.
Which of the following innate responses is unique to vertebrates? - ANSWER-
Natural killer cells, the inflammatory response.
Natural killer cells target diseased cells that no longer express____ on their surface.
- ANSWER-Class 1 MHC protein.
Antigen receptors on a single lymphocyte (B or T cell) recognize - ANSWER-The
same epitope
The B cell antigen receptor - ANSWER-Consists of two identical light chains and two
identical heavy chains, has a constant (C) region and a variable (V) region, binds to
an intact antigen, whether the antigen is free or on the surface of a pathogen, has a
transmembrane region that anchors it to the plasma membrane.
Which of the following is not a property of the acquired immune system? - ANSWER-
Rapid rate of response.
Differences in ______ stimulate rejection of tissue grafts and organ transplants. -
ANSWER-MHC molecules
This nitrogenous waste product can be excreted as a semisolid paste with very little
water loss. - ANSWER-Uric Acid
Intake of a large volume of water would lead to a decrease in the secretion of this
hormone. - ANSWER-ADH
This segment of the nephron has ion channels but no water channels and hence is
impermmeable to water. - ANSWER-Ascending loop of Henle
Which of the following is not a step common to most excretory systems that produce
urine? - ANSWER-Ingestion
Which of the following structures can be found in the renal medulla? - ANSWER-
Loop of Henle
Homeostasis of blood pressure and volume by RAAS utilizes a negative feedback
loop. The sensor for this negative feedback loop, the _____, is located in the kidney.
- ANSWER-Juxtaglomerular Apparatus (JGA)
REVIEW EXAM #3 QUESTIONS AND
ANSWERS
Negative pressure breathing in humans relies on the following - ANSWER-
contraction of the rib muscles and diaphragm. Concerted change in the volume of
the thoracic cavity and lungs.
Which of the following innate responses is unique to vertebrates? - ANSWER-
Natural killer cells, the inflammatory response.
Natural killer cells target diseased cells that no longer express____ on their surface.
- ANSWER-Class 1 MHC protein.
Antigen receptors on a single lymphocyte (B or T cell) recognize - ANSWER-The
same epitope
The B cell antigen receptor - ANSWER-Consists of two identical light chains and two
identical heavy chains, has a constant (C) region and a variable (V) region, binds to
an intact antigen, whether the antigen is free or on the surface of a pathogen, has a
transmembrane region that anchors it to the plasma membrane.
Which of the following is not a property of the acquired immune system? - ANSWER-
Rapid rate of response.
Differences in ______ stimulate rejection of tissue grafts and organ transplants. -
ANSWER-MHC molecules
This nitrogenous waste product can be excreted as a semisolid paste with very little
water loss. - ANSWER-Uric Acid
Intake of a large volume of water would lead to a decrease in the secretion of this
hormone. - ANSWER-ADH
This segment of the nephron has ion channels but no water channels and hence is
impermmeable to water. - ANSWER-Ascending loop of Henle
Which of the following is not a step common to most excretory systems that produce
urine? - ANSWER-Ingestion
Which of the following structures can be found in the renal medulla? - ANSWER-
Loop of Henle
Homeostasis of blood pressure and volume by RAAS utilizes a negative feedback
loop. The sensor for this negative feedback loop, the _____, is located in the kidney.
- ANSWER-Juxtaglomerular Apparatus (JGA)
