Bio 202 First Exam Questions With Complete Solutions
____ phase of interphase is when dna dupliation takes place
Correct Answers s phase
________ bonds between nitrogenous bases Correct Answers
hydrogen
__________ removes the rna primers and fills in the gaps with
dna nucleotides Correct Answers dna polymerase 1
a chromosome is composed of ____ complexed with ______
and many ________ are found along the length of a single
chromosome Correct Answers DNA, protiens, genes
a sequence repeated in tandem over and over is a gene sequence
that codes for a protien (t/f)? Correct Answers false, the
majority of repetitive dna serves no known fucntion
after replication, the new daughter dnas are __________ to each
other Correct Answers identical
ames test Correct Answers test if a chemical can cause a
reversion mutation in his- bacteria
A second messenger is used in the binding of lipid soluble
hormones Correct Answers false
Antagonist's experience transduction. Correct Answers false
,Beta cells secrete glucagon to help increase glucose levels
Correct Answers false
Catecholamines are released by what portion of the adrenal
gland? Correct Answers Adrenal medulla
Cells only respond to a cell signal if they have a specific
receptor Correct Answers true
Cortisol inhibits its own production when the body is facing
chronic stress Correct Answers true
Does autocrine signaling include a target cell? Correct Answers
false
How are hormones broken down Correct Answers By receptors
By surrounding tissues
Hypophysiotropic hormone target cells in the pituitary gland
both posterior and anterior Correct Answers false
If the body senses low thyroid hormone in the blood what is the
first hormone used in the negative feedback loop? Correct
Answers Thyrotropin-releasing hormone
Insulin lowers blood sugar in which of the following ways
Correct Answers Through the opening of cells
Removes glucose from the blood
Inhibits gluconeogenesis
, Negative feedback is a process in which the end product of a
process in turn reduces the stimulus of that same process
Correct Answers true
Protein hormones have the shortest half life. Correct Answers
false
The anterior pituitary releases GHRH which stimulates bone and
muscle growth which then sends a signal to the hypothalamus to
release GHIH Correct Answers true
The catecholamines have what kinds of effects on the body?
Correct Answers Vasoconstriction
Vasodilation
The endocrine system differs from the nervous system in which
of the following ways Correct Answers Secretes hormones
Travels via the bloodstream
Controls most of the body
The release of cortisol response to what kind of stress? Correct
Answers Long term stress such as starvation
The term "hypophysis" refers to the hypothalamus Correct
Answers false
The upregulation and increased production of growth hormone
inhibiting hormone is part of the negative feedback loop
mentioned above Correct Answers true
____ phase of interphase is when dna dupliation takes place
Correct Answers s phase
________ bonds between nitrogenous bases Correct Answers
hydrogen
__________ removes the rna primers and fills in the gaps with
dna nucleotides Correct Answers dna polymerase 1
a chromosome is composed of ____ complexed with ______
and many ________ are found along the length of a single
chromosome Correct Answers DNA, protiens, genes
a sequence repeated in tandem over and over is a gene sequence
that codes for a protien (t/f)? Correct Answers false, the
majority of repetitive dna serves no known fucntion
after replication, the new daughter dnas are __________ to each
other Correct Answers identical
ames test Correct Answers test if a chemical can cause a
reversion mutation in his- bacteria
A second messenger is used in the binding of lipid soluble
hormones Correct Answers false
Antagonist's experience transduction. Correct Answers false
,Beta cells secrete glucagon to help increase glucose levels
Correct Answers false
Catecholamines are released by what portion of the adrenal
gland? Correct Answers Adrenal medulla
Cells only respond to a cell signal if they have a specific
receptor Correct Answers true
Cortisol inhibits its own production when the body is facing
chronic stress Correct Answers true
Does autocrine signaling include a target cell? Correct Answers
false
How are hormones broken down Correct Answers By receptors
By surrounding tissues
Hypophysiotropic hormone target cells in the pituitary gland
both posterior and anterior Correct Answers false
If the body senses low thyroid hormone in the blood what is the
first hormone used in the negative feedback loop? Correct
Answers Thyrotropin-releasing hormone
Insulin lowers blood sugar in which of the following ways
Correct Answers Through the opening of cells
Removes glucose from the blood
Inhibits gluconeogenesis
, Negative feedback is a process in which the end product of a
process in turn reduces the stimulus of that same process
Correct Answers true
Protein hormones have the shortest half life. Correct Answers
false
The anterior pituitary releases GHRH which stimulates bone and
muscle growth which then sends a signal to the hypothalamus to
release GHIH Correct Answers true
The catecholamines have what kinds of effects on the body?
Correct Answers Vasoconstriction
Vasodilation
The endocrine system differs from the nervous system in which
of the following ways Correct Answers Secretes hormones
Travels via the bloodstream
Controls most of the body
The release of cortisol response to what kind of stress? Correct
Answers Long term stress such as starvation
The term "hypophysis" refers to the hypothalamus Correct
Answers false
The upregulation and increased production of growth hormone
inhibiting hormone is part of the negative feedback loop
mentioned above Correct Answers true
