An example of a plant disease caused by a basiodiomycete is:
a. chestnut blight.
b. Dutch elm disease.
c. verticillium wilt on potatoes.
d. wheat rust.
e. ergot of rye.
D
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The sea squirts and lancelets have an inner chamber that expels water. This chamber is called the
(a) intestine. (b) bladder. (c) atrium. (d) nephridium.
A researcher is studying eukaryotic cells that shows an abnormal pattern of surface glycosylation. The researcher determines that these cells have normal levels of glycolipids and integral membrane proteins with O-linked glycosylation. The researcher discovers that there are no N-linked glycosylated proteins on the cell surface and unusually high levels of glycosylated in the ER membrane. What is a reasonable hypothesis to explain this observation?
A. The cell is defective in synthesizing of carbohydrates B. The cell is defective in assembling carbohydrate trees C. The cell has a defective oligosaccharide transferase D. The cell has a defect in its protein sorting pathway E. The cell has a defect in its ER localization signal
The urogenital system refers to the
a. urinary and reproductive systems. b. urinary and excretory systems. c. reproductive system. d. external genitalia.
All of the following were likely present on the primitive Earth during the evolution of self replicating molecules EXCEPT
A. amino acids and nucleotides B. nitrogen C. simple carbohydrates D. freestanding liquid water E. an O2 rich atmosphere