To avoid using controversial embryonic stem cells, scientists have learned to reprogram fully differentiated adult cells and return them to a pluripotent state
A. true
B. false
A
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Where are the largest reserves of carbon on the planet?
A. soils B. frozen lakes C. rocks and fossil fuels D. fossil fuels E. the oceans
What results would you expect if mitochondria are inherited uniparentally from the ? strain?
A) Some, but not all, yeast colonies found on the plate without chloramphenicol will also grow on the plate with chloramphenicol. B) All of the yeast colonies on the plate without chloramphenicol will also grow on the plate with chloramphenicol. C) Many yeast colonies will grow on the plate without chloramphenicol and no colonies will grow on the plate with chloramphenicol. D) No colonies will grow on either plate.
E. coli strains toxic to humans live in the
intestine of ____ without sickening them. I. birds and frogs II. goats and sheep III. cattle and deer
a. I only b. I and II c. II and III d. I and III e. all of these
The best way to reclaim an ecosystem that is extensively damaged is to ____
a. allow natural succession to take over b. remove all predators from the area c. seed the area with a type of grass d. bring in beneficial insects e. implement ecological restoration