In which period of evolution, in the Cenozoic era, would you find Homo sapiens?
A. Cretaceous
B. Neoprene
C. Jurassic
D. Quarternary
E. Paleogene
Answer: D. Quarternary
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The main mechanism by which humans cool their body is by:
a. ingesting water b. panting c. salivation d. vasodilation of skin blood vessels e. sweating
The carbon atoms in cellulose found in a log originally came from absorbed by the plant.
A. glucose in the roots, B. oxygen in the atmosphere, C. water in the soil, D. carbon dioxide in the air, E. nutrients in the soil,
The function of scaffolding proteins is to:
a. phosphorylate proteins in a cascade. b. dephosphorylate proteins in a cascade. c. convert ATP and GTP to cAMP and cGMP, respectively. d. regulate the MAP kinase pathway. e. stimulate the release of calcium ions from the ER.
Alcohol consumption adversely affects the synthesis of molecules involved in protein degradation, which can eventually lead to liver damage. Given this information, which organelle in liver cells is most directly affected by alcohol consumption?
A. Lysosome B. Golgi apparatus C. Nucleus D. Rough endoplasmic reticulum