________ inhibitors bind reversibly at the active site of an enzyme
Fill in the blank with correct word.
Answer: Competitive
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Species - as opposed to individuals or populations - are considered the ultimate evolutionary unit because (select all correct choices)
A. new mutations can potentially spread within a species, but not beyond it. B. species can become extinct. C. species give rise to other species. D. changes in gene frequencies over time can only be observed within species, not within populations. E. none of these
Muscle that is not striated and is involuntary is ____
a. cardiac only b. skeletal only c. smooth only d. both cardiac and skeletal e. both cardiac and smooth
Which of the following traits does the fossil above
share with modern birds? a. long,clawed fingers on each forelimb b. teeth c. feathers d. a long bony tail e. all of the above
How many years ago did the earliest primates arise?
a. ˜200 million years ago b. ˜125 million years ago c. ˜56 million years ago d. ˜22 million years ago e. ˜12.5 million years ago