In what way do steroid hormones differ from
hormones derived from amino acids?
a. steroid hormones are not derived from
organic molecules
b. steroid hormones do not need a plasma
membrane receptor
c. steroid hormones use a second messenger
system
d. steroid hormones do not travel in the blood
e. more than one of these is a way in which
steroid hormones differ from amino acidderived
hormone
B
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Many of the signaling pathways used for communication between cells in complex multicellular organisms first evolved in:
A. unicellular eukaryotes. B. simple multicellular eukaryotes. C. unicellular prokaryotes. D. simple multicellular prokaryotes. E. complex multicellular prokaryotes.
Egg activation by sperm entry is associated with a sudden increase in protein synthesis. What must be true of these proteins?
A. They are from maternal mRNAs. B. They are from paternal mRNAs. C. They are small peptides. D. They are histone proteins.
Which of the following cellular structures is characteristic of amoebas?
A) pseudopodia B) microvilli C) cilia D) flagella
What type of immunity results from recovery from mumps?
A) innate immunity B) naturally acquired active immunity C) naturally acquired passive immunity D) artificially acquired active immunity E) artificially acquired passive immunity