You feel discomfort and possibly pain when the dentist drills a hole in your tooth because the:a
heat of the drilling process is felt by the gum tissue.
b. pulp cavity contains nerves.
c. tooth decay has invaded the pulp cavity.
d. dentist is applying too much pressure to the drill.
e. decay has affected the dentin.
b
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Small RNAs that regulate translation by binding to the leader region of mRNAs are called antisense RNAs.
Answer the following statement true (T) or false (F)
Which of the following statements about kingdom Animalia is FALSE?
a. All adult animals are motile. b. All animals are eukaryotes. c. All adult animals are multicellular. d. Animal cells lack cell walls. e. All animals are heterotrophs.
Which of the following act as pain-signaling molecules?
a. substance P b. morphine c. endorphins d. histamine and prostaglandins e. dopamine
An ecological relationship between organisms of different species that are in direct contact can best be described as _____.
A.) symbiotic B.) parasitic C.) taxis D.) mutualistic E.) commensal