Which are found in a Gram positive cell wall
What will be an ideal response?
peptidoglycan, NAG, NAM, teichoic acid
NOT Lipid A (endotoxin)
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What is the likely impact of this toxin on action potentials?
A. They will occur more frequently. B. They will be stronger and more unpredictable. C. Without ion gradients, action potentials are not possible. D. They will have longer refractory periods. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about sodium and potassium? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
During transcription, _____
a. non-coding sequences are removed from the RNA transcript b. regulatory proteins attach to the DNA at the promoter site c. DNA polymerase assembles RNA nucleotides d. the entire DNA strand opens up for complete gene transcription e. tRNA brings nucleotides to the DNA strand
Which current method allows for classification of
both cultivable and non-cultivable prokaryotes? a. isolation and observation b. protein analysis c. lipid analysis d. DNA sequencing e. none of these
In humans, the genetic basis for determining the sex "male" is accomplished by the presence of ________
A) high levels of estrogen B) a balance between the number of X chromosomes and the number of haploid sets of autosomes C) a portion of the Y chromosome D) multiple alleles scattered throughout the autosomes E) one X chromosome