Which of the following is not a receptor tyrosine kinase?
A) EGF
B) PDGF
C) TGF
D) FGF
D) FGF
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A partly enclosed body of water where fresh water from a river or rivers mixes with seawater is referred to as a(n)
____. a. upper littoral b. midlittoral c. lower littoral d. estuary e. upwellings
Which of the following characteristics is not associated with cardiac muscle?
A) intercalated discs B) electrical coupling by gap junctions C) involuntary nervous control D) fusion of cardiomyocytes into large multinucleated myofibers E) striations
Which of the following pairs of molecules can be held together by a hydrogen bond?
A) one polar molecule and one nonpolar molecule B) two negative ions C) two nonpolar molecules D) two polar molecules
A codon of mRNA consists of three bases that code for an amino acid
Indicate whether the statement is true or false