The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession.
A. opportunistic
B. secondary
C. species-rich
D. primary
Answer: D
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Sarin gas is an inhibitor of an enzyme that functions in the neuromuscular junction to break down acetylcholine. What is the most likely description of how a person would die after inhaling this poisonous gas?
A. suffocation via paralysis, or a block in stimulation, of the respiratory muscles B. epileptic convulsions caused by disorganized electrical activity in the brain C. by a heart attack D. suffocation via tetanus, or constant stimulation, of the respiratory muscles E. paralysis of skeletal muscles Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the effect of inhibition of acetylcholinesterase? What other information is related to the question? Choose Answer · Given what you now know, what information is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The ____ gland is associated with biological clocks or biorhythms
a. pineal b. parathyroid c. hypothalamus d. pituitary e. thymus
You want to calculate the relative water content of a sapling. You measure the fresh weight to be 11.95g, the turgid weight to be 12.5g, and the dry weight to be 11.5g. What is the RWC of this plant, and is it likely to live or die?
A. 100%; live B. 55%; live C. 45%; die D. 45%; live E. 55%; die
Are "mind reading vs. manipulation" and "costly signaling" mutually exclusive explanations for the evolution of honest signals?
a. Yes, subtle unintentional cues are, by definition, not costly signals. b. No, once a subtle cue becomes a "handle," it could be selected to become a costly signal. c. Yes, by deceiving the receiver with a certain cue, the sender avoids the costs of producing a costly honest signal. d. No, both are cases of antagonistic coevolution.