Which type(s) of cells have genetic material that is contained in a nucleus?
A. bacteria
B. plants only
C. animals only
D. both plant and animal cells
D. both plant and animal cells
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When a Bacillus anthracis population suddenly must form spores to survive a harsh nutrient poor environment, how do the cells obtain energy?
A) Cells in a growth phase that have not used up all of their energy will be the only ones to make endospores, which is why relatively few endospores are often made from a large population. B) Intracellular energy reserves are quickly made available to produce endospores. C) Slow responding cells are cannibalized by others that already began spore formation. D) Global regulation is initiated to minimize energy waste in biosynthetic pathways and catabolic pathways are increased to consume remaining usable substrates to fuel spore formation.
Multiple sclerosis is brought about by
a. destruction of cells in the basal ganglia. b. a viral infection of the meninges. c. a buildup of amyloid protein in the brain. d. CSF buildup in the ventricles. e. progressive destruction of the myelin sheath in the CNS.
Why is evolution an important process for living things?
What will be an ideal response?
Cyclic AMP activates protein kinase C in producing a cell response.
Answer the following statement true (T) or false (F)