A distinguishing characteristic of actinomycetes that can be used to classify these organisms is the types of sugars found in extracts of the organisms.
Answer the following statement true (T) or false (F)
True
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Water potential in plants consists mainly of _____
A) solute potential and osmotic potential B) solute potential and membrane potential C) pressure potential and solute potential D) pressure potential and membrane potential E) solute potential only
The sequence of a promoter constitutes the most basic mechanism of transcription regulation because:
A. promoters are always bound by activators. B. RNA polymerase has differential affinities for different sequences that correlate with the efficiency of transcription. C. promoters are always bound by repressors. D. the expression levels of different housekeeping genes are always identical.
An action potential will be generated when the sum of all graded potentials reaches ________.
Fill in the blank(s) with the appropriate word(s).
One of two major forms of a human condition called neurofibromatosis (NF 1 ) is inherited as a dominant gene, although it may range from mildly to very severely expressed
Which of the following is the best explanation for why a young, affected child is the first in her family to be diagnosed? A) The mother carries the gene but does not express it. B) One of the parents has a mild expression of the gene. C) The condition skipped a generation in the family. D) The child has one more chromosome than either of the parents.