What is the site of translation?
a. Cytoplasm
b. Smooth endoplasmic reticulum
c. Mitochondria
d. Nucleus
e. Rough endoplasmic reticulum
a
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What second messenger is directly involved in activating protein kinase C (PKC)?
A. DAG B. cAMP C. cGMP D. Phospholipase C E. G protein
Four of the five answers are features of the echinoderms. Select the exception
a. spiny skin b. decentralized nervous system c. radial symmetry d. a water-vascular system e. a mantle
Photosynthesis takes place mainly in the
a. stomata. b. vascular bundles. c. cuticle. d. lower and upper epidermis. e. mesophyll tissue.
Four of the following statements about Neanderthals are true. Which statement is false?
A. Neanderthals diverged from modern humans around 500,000 years ago. B. Neanderthals lived in Europe and the Middle East. C. Neanderthals are direct ancestors of Homo sapiens. D. Neanderthals stood upright. E. Neanderthals have no modern descendants.