All the following are correct about detergents, except
A. they are active in the presence of organic matter.
B. in low concentrations they are bacteriostatic.
C. they are ineffective against the tuberculosis bacteria.
D. the most effective ones are positively charged.
E. they are polar molecules that act as surfactants.
Answer: A
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Genome sequencing of our human ancestor, Neanderthals (Homo neanderthalensis), revealed that Neanderthals have a FOXP2 gene with the same two amino acid changes observed in H. sapiens FOXP2. What can be concluded based on this finding? (Check all that apply)
_____ Neanderthals evolved from H. sapiens. _____ H. sapiens evolved from Neanderthals. _____ Neanderthals may have had the ability to use language. _____ These two amino acid changes arose prior to the common ancestor of Neanderthals and H. sapiens. _____ Verbal speech was impossible for Neanderthals. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about FOXP2? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? 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?
The key molecule upon which all complement pathways converge is
A. C1. B. C2. C. C3. D. C6.
Amoeba is a term used to describe unicellular protists that move by means of flagella
Indicate whether the statement is true or false.
A trade-off for having many offspring would be
A) that they would likely be small in size. B) that they would likely be large in size. C) that they would require a large amount of parental care. D) that they would have high survivorship.