The change of a larval form of insect to a different adult form is known as:
A. tagmosis
B. incomplete metamorphosis
C. complete metamorphosis
D. instar
E. chrysalis
C. complete metamorphosis
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Nucleophilic attack:
A. is carried out by a strongly electronegative atom such as carbon or hydrogen. B. can result in the formation of the transition state of the reaction. C. by an OH (hydroxyl) group on an inorganic phosphate molecule can cause hydrolysis of a chemical bond. D. occurs when a weakly electronegative atom attacks a strongly electronegative atom. E. never forms bonds between reactants and the enzyme active site.
Assuming the gardener continues to spray the herbicide for five years, do you think the weed
population will evolve?
a. Yes, there will be more individuals in the population with the herbicide-resistant allele. b. No, there will be no change in the genetic composition of the population. c. Yes, the population will have evolved because speciation will have occurred. d. No, evolution cannot occur over such a short time period.
Which portion of nerve cells receives incoming messages?
a. cell body b. soma c. axon d. dendrite e. synapse
A short chain of sugar attached to a protein molecule on the plasma membrane is called
A. a glycocalyx. B. a glycoprotein. C. a protosugar. D. a glycolipid. E. a protomembrane.