What number process does isolation correspond with?
What will be an ideal response?
3
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Which of the following statements is not true of early plant evolution, as we have learned from Rhynie cherts?
A. Early vascular plants were small, up to 15 cm tall. B. Early vascular plants branched repeatedly and contained sporangia at their tips. C. The stems of early vascular plants lacked a cuticle or stomata. D. Some of the early plants have a branched sporophyte, but no evidence of vascular tissue. E. Fossils indicate that the roots and leaves of lycophytes evolved independently from those of ferns, horsetails, and seed plants.
Cellular items that can NOT be transported through proton channels are:
A. proteins B. nucleotides C. mitochondria D. water E. sugars
It has been thought that many diseases now associated with aging are related to malfunctioning
mitochondria. Why are the mitochondria so important to all cells?
a. They produce energy in the form of ATP. b. They generate heat to keep the body warm. c. They are the source of all human disease. d. They are extremely large. e. They are located only in vital organs.
What is the function of protein kinase C (PKC) in gene regulation?
a. PKC triggers apoptosis in cells exhibiting malformed RNA molecules. b. PKC binds to NF-?B, inhibiting it from entering the nucleus for RNA transcription. c. PKC phosphorylates I?-B, preventing it from inhibiting RNA transcription. d. PKC is the transcription factor that initiates RNA transcription in the nucleus.