Which pathogens require a host cell because they aren't able to make proteins on their own?
A) blue-green algae
B) bacteria
C) protozoans
D) viruses
D
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Adenylyl cyclase is to cAMP as ________ is to IP3.
A. protein kinase A B. protein kinase C C. calmodulin D. Raf1 E. phospholipase C
Mammals that have and care for only a few offspring are likely to exhibit a:
a. type I survivorship curve. b. type II survivorship curve. c. type III survivorship curve. d. type IV survivorship curve.
Which Archaea have the ability to carry out a form of the Calvin cycle, capturing sunlight with bacteriorhodopsin?
a. extreme thermophiles b. extreme halophiles c. Nanoarchaeota d. Korarchaeota e. Euryarchaeota
What do type A positive and AB negative blood have in common?
A. anti-B antibodies and Rh antigens B. A antigens C. A and B antigens D. A antigens, anti-B antibodies E. A antigens and Rh antigens, anti-B antibodies