Features considered taxonomically important to the actinomycetes include morphology, peptidoglycan composition and structure, and color of mycelia and sporangia.
Answer the following statement true (T) or false (F)
True
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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.
The part of interphase when DNA is copied is the ____
a. G1 phase b. S phase c. G2 phase d. M phase e. R phase
You are using genetic engineering to design a protein that needs to be synthesized in the cytoplasm and then localized in the nucleus of the cell. To accomplish this, you could add
A) a DNA sequence for a nuclear localization signal into the DNA that will be present in the mature protein. B) the protein during mitosis, at a time when the nuclear membrane is dispersed. C) a nucleotide or few nucleotides to the DNA sequence for the protein. D) a series of specific polysaccharides to the carboxyterminal end of the protein. E) inverted repeats to the DNA sequence for the protein.
The finding that virtually all organisms use the same genetic code provides the basis for declaring that the code is universal. Name at least two exceptions to such universality
What will be an ideal response?