Hemostasis in vertebrates includes all of the following EXCEPT
a. blood clot formation.
b. vessel constriction.
c. release of iron to aid in the clumping of platelets.
d. vessel spasms.
e. platelets releasing substances that cause them to attract each other.
C
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Which of the following is NOT synthesized from a DNA template?
A) messenger RNA B) amino acids C) tRNA D) ribosomal RNA
Which one of the following is not a direct method of disease transmission
A. Fomites B. Particles of mucus expelled from the respiratory tract C. Contact with feces D. Hand-shaking E. Intercourse
Identify the principal role of cellular respiration.
A. To convert the chemical energy of sugars into heat to maintain an elevated body temperature B. To convert kinetic energy into the chemical energy of sugars C. To convert solar energy into the chemical energy of sugars D. To convert the chemical energy of sugars into the chemical energy that fuels life's processes
Which of the following bases is not found in RNA?
A. adenine B. guanine C. thymine D. cytosine E. uracil