Which plant is best adapted to prevent an embolism in their xylem tubes?
A) a banana plant in a very warm climate
B) a spruce tree with narrow, tapering tracheids
C) a maple tree with wide, perforated vessel elements
D) a cattail in a marsh
B
Biology & Microbiology
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__________ are proteins, Y-shaped antigen receptors made only by __________ cells. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
The largest vessel in the body is the ____
a. carotid artery b. superior vena cava c. femoral artery d. ascending aorta e. coronary artery
Biology & Microbiology
Cell proliferation in culture is normally limited by
A) cytophagy. B) quorum sensing. C) contact inhibition. D) competition. E) nutrient limitation.
Biology & Microbiology
How might a virus pick up a human oncogene?
a. Specialized transduction b. Transformation c. Reverse transcription d. Biosynthesis e. Viral conversion
Biology & Microbiology