The tunic of tunicates is composed of:
a. a cellulose-like substance.
b. chitin.
c. silica.
d. calcium carbonate.
e. starch.
A
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Identify the exergonic reaction in the list below
a. burning wood for a campfire b. folding laundry c. building a tower out of blocks d. synthesizing a protein e. storing the third slice of pie in the form of fat
Which of the following statements best describes the gametes of most animals?
a. A sperm is large and motile; an egg is small and nonmotile. b. A sperm is small and nonmotile; an egg is large and motile. c. A sperm is large and nonmotile; an egg is small and motile. d. A sperm is small and motile; an egg is large and nonmotile. e. The sperm and egg are about the same size, but only the sperm is motile.
The __________ generation is dominant in mosses, as it can live independently
a. haploid sporophyte b. haploid gametophyte c. diploid sporophyte d. diploid gametophyte e. triploid sporophyte
Which step is not involved with constructing a representative sample?
A. Collect the sample by randomly sampling from each stratum (defined by your pre-chosen independent variables). B. Run a t-test to check if the outcomes are different across stratums. C. Use information about the population to stratify (categorize) each of the chosen variables. D. Choose the independent variables you want to match.