Four features help define __________: a notochord, a dorsal hollow nerve cord, a pharynx with gill
slits, and a tail extending past the anus. Fill in the blank(s) with the appropriate word(s).
chordates
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Answer the following statements true (T) or false (F)
1. For a reaction to be spontaneous it must show a net decrease in both energy and entropy.
2. A reaction with a ?G 0 is endergonic and requires a net input of energy to proceed.
3. Enzymes are consumed in chemical reactions and must therefore be replenished.
4. Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes. 5. Noncompetitive inhibitors bind the active site of an enzyme, reducing its activity and the subsequent formation of product.
In corn, having ligules (L) is dominant to liguleless (l), and green leaves (G) is dominant to white leaves (g). If a pure-breeding plant that is liguleless and has green leaves is crossed to a pure-breeding plant with white leaves and ligules, predict the genotypes and phenotypes of the F1.
A) LL GG, green and ligules B) Ll GG, green and ligules C) Ll Gg, green and ligules D) ll gg, white and liguleless E) Ll gg, green and liguleless
Lichens reproduce sexually via soredia
____________________ Indicate whether the statement is true or false.
Over 6000 species of prokaryotes have been identified. What percentage of the total number of prokaryotic species on Earth does this represent?
a. 1% b. 10% c. 30% d. 90%