How do invasive species impact ecosystems?
A. They occupy niches that other organisms traditionally occupy.
B. They are more capable of adapting to rapidly changing climates.
C. They outcompete with other organisms for limited resources
D. All of the answer choices are correct.
Answer: D
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A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n)
A) obligate aerobe. B) facultative anaerobe. C) aerotolerant anaerobe. D) microaerophile. E) obligate anaerobe.
What is the nutritional mode of most bacteria?
a. autotrophy b. heterotrophy c. chemoautotrophy d. photoheterotrophy e. chemoheterotrophy
When sea turtle eggs hatch, predators gather and mortality among the hatchlings is extremely high. Once turtles reach adult size, they can live for decades. This is an example of type ____ survivorship
Fill in the blank with the appropriate word.
Which of the following is NOT a motif structure commonly found in transcription factor proteins?
A. helix-turn-helix motif B. helix-loop-helix motif C. zinc finger motif D. arginine helix-loop-zipper motif E. leucine zipper motif