Sympatric speciation often occurs in animals through polyploidy
Indicate whether the statement is true or false.
ANS: F, plants
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If a person is highly alert, anxious, and has loss of fine motor control, which psychoactive drug have they most likely
taken?
a. a narcotic analgesic b. a stimulant c. a depressant d. a hallucinogen e. an endorphin
Monomeric G proteins, such as Ras and several elongation factors, are usually in the active state when a molecule of _______ is bound to them.
a. GDP b. GTP c. ADP d. ATP
Select all of the endocrine glands that secrete lipid-soluble hormones.
Which statement concerning reproduction is FALSE?
(a). Hereditary information is passed on to the next generation. (b). Hereditary information is in the form of genes. (c). The offspring of asexual organisms have the same genes as the single parent. (d). The offspring of sexual organisms have roughly one half of the genes from each parent. (e). The offspring of multicellular organisms tend to be identical to the parent.