Based on the pollen to ovule ratios, which statement appears to be true?
a. Species A probably distributes its pollen via the wind.
b. Species B probably distributes its pollen via the wind.
c. The pollen from species B is probably distributed by animals.
d. Both species probably distribute their pollen via the same method
B
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In the cell cycle, controlled degradation of regulatory proteins occurs via the
A) P450 - protease pathway. B) cyclin proteolysis pathway. C) ubiquitin-proteosome pathway. D) kinase inhibition pathway. E) none of the above
A substage condenser is used to focus light onto the specimen, which increases the resolution of a light microscope.
Answer the following statement true (T) or false (F)
Of the following statements, which does not correlate a type of RNA with its function?
A. Ribosomal RNA is part of the ribosome. B. Transfer RNA functions to carry amino acids to the ribosome. C. Ribosomal RNA functions as a catalyst to bind amino acids into proteins. D. Messenger RNA carries the code used to make a protein. E. Complementary RNA reorders the amino acids to insure their correct sequence.
Which one of the following incorrectly pairs a vertebrate group with its major evolutionary innovation?
A. Amphibians-paired lateral fins B. Placoderms-jaws C. Dinosaurs-bipedalism D. Sharks-teeth E. Ostracoderms-cartilaginous endoskeleton