Before insulin from recombinant DNA became available, diabetics were treated with insulin derived from cadavers
a. True
b. False
Indicate whether the statement is true or false
False
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Which one of the following best describes genotype-by-environment interaction?
A. Genetic and environmental factors combine to influence phenotype. B. The genotype of an organism determines how that organism will behave in its environment. C. The environment of an organism determines the genetic make-up of that organism. D. Under certain circumstances, two organisms with identical genotypes have different phenotypes. E. Under certain circumstances, two organisms with identical phenotypes have different genotypes.
The only diploid cell of the life cycle of basidiomycetes is produced within the basidium by
A. mitosis. B. meiosis. C. karyogamy. D. ascus bursting. E. budding.
Steroid hormones can trigger gene expression in a select number of cells because ____
a. only target cells allow the steroid hormone to cross the plasma membrane b. nontarget cells have a steroid hormone response element encoded in their DNA c. only target cells have the correct receptor in their cytosol to bind to the hormone d. nontarget cells lack the genes found in target cells e. only target cells have the genes that steroid hormones activate
Describe the condition of a neuron when it is not transmitting a nervous impulse-that is, when it is at rest.
What will be an ideal response?