Stilling and Drake have conducted experiments about what, if any, effects that elevated atmospheric carbon dioxide might have on insect herbivory of plants. What did they find?
A. elevated plant growth but no change in insect herbivory
B. no change in plant growth but elevated insect herbivory
C. elevated plant growth but reduced insect herbivory
D. elevated release of carbon dioxide by plants subject to insect herbivory
E. no change in both plant growth and insect herbivory
C. elevated plant growth but reduced insect herbivory
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Which is a false statement regarding riboswitches?
A. Riboswitches are regions in the 5' untranslated leader of an mRNA. B. When the effector binds the riboswitch, it may serve to terminate transcription of its target mRNA. C. When the effector binds the riboswitch, it may serve to continue transcription of its target mRNA. D. The effector molecules that bind to riboswitches are proteins.
All of the following have potential energy EXCEPT
A. ATP. B. nitrogen. C. an electrical/ion gradient. D. concentration gradient. E. NADH
Vertical evolution arises from
A. genetic mutations. B. gene duplication. C. exon shuffling. D. genetic mutations and gene duplication. E. genetic mutations, gene duplication and exon shuffling.
What is the function of gap junctions?
a. to allow plant cells to communicate with each other b. to allow ions and small molecules to pass between cells c. to give the cell its shape d. to seal the spaces between cells