The earliest fossil organisms resemble modern
A) protists. B) eukaryotes. C) prokaryotes. D) green algae. E) protocells.
C
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Thermostable proteins tend to have additional features that improve thermostability. Which of the following is NOT one of these features?
A) increased ionic interactions on the protein surfaces B) highly hydrophilic cores C) decreased tendency of the protein to unfold D) highly hydrophobic cores
An example of an endotherm is a ____
a. mouse b. salamander c. turtle d. frog e. snake
Germline engineering would
a. alter a cloned embryo's genetic makeup. b. replace defective genes. c. insert missing genes. d. modify damaged genes. e. all of these.
Explain how the movement of hydrogen and potassium ions across the membranes of guard cells
opens and closes the stomata. What will be an ideal response?