Which of the following statements about plant toxins against herbivores is false?
A. The toxin may be kept in a membrane-bound structure to keep it from harming the plant.
B. The toxin may not be toxic unless it is metabolized in the intestine of a herbivore.
C. The toxin may have also have a bad taste.
D. Even a little bit of the toxin will be deadly.
E. Some toxins can over stimulate particular physiological processes.
D. Even a little bit of the toxin will be deadly.
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This part of the brain coordinates motor
activity for moving limbs and maintaining posture. This part of the brain is the
a. cerebrum. b. cerebellum. c. medulla oblongata. d. pons. e. hypothalamus
Which of the following techniques reveals
differences in the number of tandem repeats among individuals?
a. PCR b. DNA amplification c. DNA hybridization d. DNA profiling e. DNA probe analysis
Which of the following statements is false?
a. Lizards are a very small component of the present-day reptiles. b. Lizards gave rise to the snakes. c. Some lizards are herbivorous. d. Some lizards can break off their tails when grabbed by predators. e. Some lizards startle potential predators by displaying a throat fan.
Which organelle increases in size, causing plant cells to elongate?
a. chloroplast b. mitochondrion c. nucleus d. ribosome e. vacuole