Which of the following appeared last in the evolutionary timescale?
What will be an ideal response?
bony fishes
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All of the following are part of a prokaryotic cell EXCEPT _____
A) DNA B) a cell wall C) a plasma membrane D) ribosomes E) an endoplasmic reticulum
A bacterial "bloom" is:
A. the reproductive parts of bacteria B. malformation of flowers caused by bacterial infections C. unusual coloring of the water of lakes, ponds, or the sea caused by high numbers of bacteria D. souring of milk caused by bacteria E. swelling of a wound because of bacterial infection
Patients who have type 2 diabetes no longer express genes when exposed to insulin. How might this phenomenon be explained?
A. The insulin signal transduction pathway becomes permanently activated. B. Insulin can no longer bind to the insulin receptor because the receptor is mutated. C. The signal transduction pathways in the cells no longer exist. D. The nucleus of their cells are altered so that insulin can not bind. E. Transcription factors normally activated by insulin remain off.
Which of the following is NOT a pancreatic secretion?
a. protein digesting enzyme b. bile c. carbohydrate digesting enzyme d. fat digesting enzyme e. bicarbonate