Diffusion, enzymatic degradation, and uptake by cells are all ways to
a) remove a neurotransmitter
b) stop a spatial summation
c) continue a temporal summation
d) inhibit a presynaptic potential
e) excite a presynaptic potential
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Question 2) A charged amino acid tends to decrease a protein's solubility in water.
Indicate whether this statement is true or false.
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Question 3) When a hormone is present in excessive levels, the number of target-cell receptors may decrease. This is called
a) receptor recognition.
b) sensory adaptation.
c) paracrine regulation.
d) up-regulation.
e) down-regulation.
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Question 4) Which gender shows the coccyx pointed inferiorly?
a) Females
b) Males
c) Both genders
d) The coccyx does not point inferiorly in either gender
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Question 5) A protein consists of
A. an amine group, a carboxyl group, and an R group.
B. more than 200 amino acids.
C. between 3 and 20 amino acids.
D. a C-terminal, several nucleic acids, and an N-terminal
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Question 6) In which type of synovial joint does a rounded or pointed surface on one bone articulate with a ring formed partly by another bone and partly by a ligament?
a) Pivot joint
b) Planar joint
c) Hinge joint
d) Ball-and-socket joint
e) Saddle joint
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Question 7) Describe the factors that lead to muscle fatigue.
What will be an ideal response
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Question 8) Which statement accurately describes amino acids?
A. There are twenty varieties, with each type having a different R group. B. There are twenty varieties, with each type having a different C-terminal end. C. There are over 200 varieties, with each type having a different R group. D. There are over 200 varieties, with each type having a different C-terminal end.
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Question 9) Which fingerlike projections found in the dural venous sinuses reabsorb cerebrospinal fluid?
a) Choroid plexuses
b) Microvilli
c) Arachnoid villi
d) Dural villi
e) Lemnisci
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Question 10) When dehydration synthesis occurs between two amino acids, a covalent bond called a _________ bond forms between them.
Fill in the blank with correct word.
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