Raf is a ________ protein kinase that resides at the head of the _______.

a) serine/threonine. glucagon cascade
b) serine/threonine, apoptosis cascade
c) tyrosine, glucagon cascade
d) serine/threonine, MAP kinase cascade
e) tyrosine, MAP kinase cascade


Ans: d) serine/threonine, MAP kinase cascade

Biology & Microbiology

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Which of the following statements is false?

a. Endotherms have a higher metabolic rate than ectotherms. b. Endotherms can regulate their temperature through behavior. c. Ectotherms regulate their temperatures through behavior. d. Heterotherms may function as either an ectotherm or an endotherm. e. Ectotherms do better in cold climates.

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An element's mass number is equal to the sum of its

a. protons and electrons. b. protons and neutrons. c. electrons and neutrons. d. protons only. e. electrons only.

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Members of which phylum are called acorn worms?

a. Hemichordata b. Echinodermata c. Arthropoda d. Cnidaria

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Where in the chloroplast would we find the enzymes involved in the Calvin cycle

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