A composite organism consisting of a fungus
with either a cyanobacterium or green alga as a
partner is called a
a. mycorrhiza.
b. rust.
c. lichen.
d. mycelium.
e. chytrid.
C
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Some viruses consist only of a protein coat surrounding a nucleic acid core. If you wanted to radioactively label the nucleic acids separately from the protein, you would use radioactive _____
A) sulfur B) carbon C) nitrogen D) phosphorus
The cecum is
a. the first part of the large intestine. b. connects to the rectum. c. between the stomach and the small intestine. d. a producer of enzymes for digestion in the small intestine. e. more than one of these
The cellular binding of IgE during an allergic reaction causes the release of which chemicals?
a. heparin and bradykinin b. prostaglandins and histamine c. histamine and serotonin d. prostaglandins and bradykinin e. serotonin and prostaglandins
Relaying a message from a membrane receptor to a molecule that performs a specific function within a cell occurs when
A) a signaling molecule binds to a protein that extends to the outside of the cell. B) a protein receptor on the interior of the membrane becomes bound by a signaling molecule. C) the extracellular matrix is moved to the inside of the cell. D) glycoproteins are recognized by other cells.