Which term refers to anatomical features that serve no current function?
a. homologous structures
b. adaptations
c. original elements
d. genetic weaknesses
e. vestigial organs
E
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A milkweed plant discourages consumption by herbivores by ____
a. exuding a toxic sap b. developing an appearance that mimics an undesirable plant c. having hairy leaves d. producing an undesirable scent e. having thorns
On which of the following infections would antibiotics most likely be effective?
1.chlamydia 2.HPV 3.syphilis 4.gonorrhea
Which statement is false?
a. High concentrations of ATP inhibit the formation of more ATP. b. The ATP concentration in cells actually decreases at first when cells need large supplies of energy. c. When ATP concentration declines, enzymatic activity that produces ATP declines. d. Cells constantly adjust their metabolic reactions to provide energy whenever it is needed. e. The activity of many different enzymes influences the supply of ATP in cells.
The activation of enzymes by the removal of a
portion of polypeptide chain is an example of a. transcriptional control. b. transcript processing control. c. transport control. d. translational control. e. post-translational control.