If the complex protein assemblage of the prokaryotic flagellum arose by the same general processes as those of the complex eyes of molluscs (such as squids and octopi), then _____
A) natural selection cannot account for the rise of the prokaryotic flagellum
B) ancestral versions of this protein assemblage were either less functional or had different functions than modern prokaryotic flagella
C) neither eyes nor flagella could have arisen by evolution because both are too complex to have evolved
D) the need for more complex structure must have driven evolution
B
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The equation C6H12O6 + 6O2 6CO2 + 6H2O represents the process of ____
Fill in the blank with the appropriate word.
Which feature of Archaea is shared with Eukarya but not with Bacteria?
a. the sequestration of DNA into a nucleus b. the common occurrence of introns c. the chemical structure of the cell walls d. the plasma membrane structure e. a genome comprised of a single, circular molecule of DNA
Which of the following is a unique characteristic of oysters and mussels?
a. secreting nacre around foreign particles b. having tusk shells buried in the sand c. using beak-like jaws to catch prey d. living inside multi-chambered shells
You are the lucky student of a wacky professor who develops a time machine. He asks if you will test it with him. You get in and there is an immediate glitch–the date readout fails so that when you land you are not sure what era you are in
Your professor begins to panic, but you see something that tells you are in the Cenozoic era. Which of the following could it be? A) a rabbit eating a daisy B) a water lily floating in a pond C) masses of green ferns with dragonflies hovering above them D) a bee pollinating a flower