Acetylcholine esterase breaks acetylcholine into muscarinic acid.
a. true
b. false
Ans: b. false
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Which of the following correctly orders the sequence in which genes controlling the development of the anterior-posterior axis of Drosophila larvae are expressed?
A. maternal-effect genes, gap genes, pairrule genes, segment-polarity genes B. maternal-effect genes, gap genes, segment-polarity genes, pair-rule genes C. pair-rule genes, maternal-effect genes, segment-polarity genes, gap genes D. maternal-effect genes, segment-polarity genes, pair-rule genes, gap genes E. gap genes, pair-rule genes, segmentpolarity genes, maternal-effect genes
Movement of individuals into or out of the population, called gene flow, impacts evolution of populations because
A) it can lead to extinction of one or more populations. B) it may cause genetic drift. C) it leads to a redistribution of alleles. D) adaptive radiation results. E) a founder effect will occur.
The combination of a virus's protein coat and nucleic acid core is called the (capsid/virion/nucleocapsid)
What will be an ideal response?
A protist such as Chlamydomonas may switch to sexual reproduction when:
A) there is little nutrition. B) hormones from nearby members of the species are detected. C) there are numerous predators. D) a 90-day cycle is completed.