What might be a result of hunting sea otters to extinction for their fur?
A) loss of killer whales
B) loss of sea urchins
C) loss of kelp beds
D) loss of barnacles
C
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Five new individuals were added to this small population in 1986 and ten more were added between 1990-1994. According to the figure above, what occurred in this population after these additions?
A) The population increased exponentially. B) The population increased in overall numbers. C) The population growth rate increased. D) The population continued to decline
In E. coli the enzyme responsible for creating unsaturated bonds from saturated ones in the fatty acids of the cell membrane is ________.
Fill in the blank(s) with the appropriate word(s).
DNA polymerases ____
a. unwind DNA b. add new nucleotides to a strand c. catalyze carbon bonding d. assemble new strands in both direction e. repairs DNA
Which molecules influence the rate of transcription?
a. RNA polymerase b. regulatory proteins c. exons d. DNA e. promoters