The sample size equals the number of fish in each stream
a. true
b. false
Answer: b. false
The sample size is the stream (the different streams)
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Which bacteria gram positive or negative have the extra plasma membrane?
a. gram-positive b. gram-negative c. both a. and b. are correct d. none of the above
The term angiosperm refers to
A. the narrow sperm of angiosperms. B. the enclosure of the seed within a fruit. C. the presence of endosperm. D. the branching of vascular veins. E. the presence of pollen.
Photorespiration
A. requires CO2. B. occurs in C4 plants. C. uses the enzyme PEP carboxylase rather than rubisco to produce 3-phosphoglycerate. D. uses a 3-carbon sugar precursor to produce oxygen. E. tends to occur under dry and hot conditions.
Genes are expressed at widely different levels in a given cell type. For the scarce mRNAs in cells, what fraction is produced in all cell types (say liver or kidney), and what is the name given to these genes?
What will be an ideal response?