The plant hormone involved in aging and ripening of fruit is _____
A) auxin
B) ethylene
C) florigen
D) abscisic acid
E) gibberellin
Answer: B
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The Euryarchaeota includes all
A. known thermophilic extreme acidophiles. B. the bacteria. C. known methanogens. D. green sulfur bacteria.
A chromosome has broken, and a piece of one chromosome is translocated to a non-homologous chromosome. This is an example of what type of chromosomal alteration?
A) paracentric inversion B) dicentric bridge C) unbalanced translocation D) Robertsonian translocation E) inversion loop
Which term refers to the voltage across a membrane?
a. membrane electrochemical gradient b. membrane potential c. membrane chemical gradient d. membrane turgor pressure
Habitat fragmentation can reduce biodiversity by ____.
A. withdrawing an essential resource from native species B. sterilizing for pollution control C. eliminating vast tracts of forests D. introducing more native species into a habitat E. decreasing human use of natural resources