?
What is the key activity of panel II in the accompanying figure?
A. The enzyme is consumed as the products form.
B. The substrate leaves the active site.
C. The conversion of substrates to products occurs.
D. The product leaves the enzyme.
E. The product decomposes to the reactants.
Answer: C
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Which of the following is/are true with regard to water movement in osmosis?
A) hypotonic ? hypertonic B) hypertonic ? hypotonic C) isotonic ? hypotonic D) hypertonic ? isotonic E) both choices C and D
Imagine that a population of deer living on an island without any predators was threatened with overpopulation, until wolves were imported
After a couple of years, there were fewer deer, but their average running speed and the length of their legs had increased. What process accounts for the change? A) Natural selection B) Changes due to chance alone C) Inheritance of acquired characteristics D) Genetic impossibility E) Unfavorable mutations
The number of species inhabiting an ecosystem is referred to as ________.
Fill in the blank(s) with the appropriate word(s).
An organ is composed of:
A) a group of cells. B) multiple organisms. C) identical cells and tissues. D) various types of tissues.