BIO 251 FINAL EXAM WITH
COMPLETE SOLUTIONS
in tubuloglomerular feedback, an increase in glomerular filtration rate
(GFR) would increase the (blank), thereby stimulating the release of
messenger molecules from the tubule cells that causes (blank) -
CORRECT ANSWER- volume of tubular fluid : constriction the afferent
arteriole
in the kidney, glucose is reabsorbed in the proximal convoluted tubules
(PCT) by what type of transporter in the membrane of the tubule cells?
- CORRECT ANSWER- sodium-linked secondary active transporter
what hormone increases sodium reabsorption in the distal convoluted
tubule (DCT) of the kidney? - CORRECT ANSWER- aldosterone
what is the force that allows water to be reabsorbed out of the collecting
ducts in the kidney? - CORRECT ANSWER- water leaving the
collecting ducts by osmosis due to the medullary osmotic gradient in the
kidney
at high concentrations of anti-diuretic hormone (ADH, vasopressin), the
extent of water reabsorption in the collecting ducts is (blank), causing
urine output to (blank) - CORRECT ANSWER- high : decrease
tissues in the body are classified into which of the following four types?
- CORRECT ANSWER- nervous, muscle, epithelial, and connective
which of the following accurately represents the order of complexity for
the body, from least to most complex? - CORRECT ANSWER- cells,
tissues, organs and organ systems
, which of the following compartments contain most of the water found in
the human body? - CORRECT ANSWER- intracellular fluid
referring to a membrane as "selectively permeable" describes its ability
to... - CORRECT ANSWER- allow the movement of certain
molecules across the membrane but restrict the movement of other
molecules
which of the following statements about homeostasis is false? -
CORRECT ANSWER- the primary mechanism to maintain
homeostasis is positive feedback
the body fluid compartment with a high potassium concentration is... -
CORRECT ANSWER- intracellular fluid
extracellular fluid is composed of... - CORRECT ANSWER- both the
interstitial fluid and plasma
direct communication between cells in contact with one another is
accomplished through... - CORRECT ANSWER- gap junctions
which type of chemical messenger is released into the bloodstream by
an endocrine gland where it can affect target cells throughout the body?
- CORRECT ANSWER- hormone
in most homeostasis mechanisms, a (blank) detects a change in a
regulated variable and sends that information to an (blank) which relays
signals to an (blank) usually a muscle or a gland - CORRECT
ANSWER- sensor; integrating center; effector
ion channels are examples of what type of membrane protein? -
CORRECT ANSWER- transmembrane protein
which of the following is not a type of integral membrane protein? -
CORRECT ANSWER- an intracellular receptor for a messenger
when molecules are passively transported across a membrane, the
direction of their movement is dictated by the molecule's tendency to
COMPLETE SOLUTIONS
in tubuloglomerular feedback, an increase in glomerular filtration rate
(GFR) would increase the (blank), thereby stimulating the release of
messenger molecules from the tubule cells that causes (blank) -
CORRECT ANSWER- volume of tubular fluid : constriction the afferent
arteriole
in the kidney, glucose is reabsorbed in the proximal convoluted tubules
(PCT) by what type of transporter in the membrane of the tubule cells?
- CORRECT ANSWER- sodium-linked secondary active transporter
what hormone increases sodium reabsorption in the distal convoluted
tubule (DCT) of the kidney? - CORRECT ANSWER- aldosterone
what is the force that allows water to be reabsorbed out of the collecting
ducts in the kidney? - CORRECT ANSWER- water leaving the
collecting ducts by osmosis due to the medullary osmotic gradient in the
kidney
at high concentrations of anti-diuretic hormone (ADH, vasopressin), the
extent of water reabsorption in the collecting ducts is (blank), causing
urine output to (blank) - CORRECT ANSWER- high : decrease
tissues in the body are classified into which of the following four types?
- CORRECT ANSWER- nervous, muscle, epithelial, and connective
which of the following accurately represents the order of complexity for
the body, from least to most complex? - CORRECT ANSWER- cells,
tissues, organs and organ systems
, which of the following compartments contain most of the water found in
the human body? - CORRECT ANSWER- intracellular fluid
referring to a membrane as "selectively permeable" describes its ability
to... - CORRECT ANSWER- allow the movement of certain
molecules across the membrane but restrict the movement of other
molecules
which of the following statements about homeostasis is false? -
CORRECT ANSWER- the primary mechanism to maintain
homeostasis is positive feedback
the body fluid compartment with a high potassium concentration is... -
CORRECT ANSWER- intracellular fluid
extracellular fluid is composed of... - CORRECT ANSWER- both the
interstitial fluid and plasma
direct communication between cells in contact with one another is
accomplished through... - CORRECT ANSWER- gap junctions
which type of chemical messenger is released into the bloodstream by
an endocrine gland where it can affect target cells throughout the body?
- CORRECT ANSWER- hormone
in most homeostasis mechanisms, a (blank) detects a change in a
regulated variable and sends that information to an (blank) which relays
signals to an (blank) usually a muscle or a gland - CORRECT
ANSWER- sensor; integrating center; effector
ion channels are examples of what type of membrane protein? -
CORRECT ANSWER- transmembrane protein
which of the following is not a type of integral membrane protein? -
CORRECT ANSWER- an intracellular receptor for a messenger
when molecules are passively transported across a membrane, the
direction of their movement is dictated by the molecule's tendency to
