Which pertains to DNA but not to RNA?
A. Contains adenine
B. Contains uracil
C. Contains nucleotides
D. Contains thymine
E. Contains ribose
Answer: D
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The pistil of a flower is best described as:
A. a structure to defend against insects B. a single carpel or group of fused carpels C. a place where pollen is produced D. a grouping of filaments E. a place for sperm to be produced
In animal skeletal muscles, red muscle fibers ____
a. have an abundance of myoglobin b. are mainly anaerobic c. have few mitochondria d. are good for short bursts of activity e. make ATP by lactate fermentation
What represents the most basic level of chemical organization?
a. cell b. atom c. tissue d. molecule e. organism
Innate immunity is a defense system that becomes fully functional after it has undergone a period of exposure to various pathogens.
Answer the following statement true (T) or false (F)