At an atmospheric pressure of 870 mm Hg with 21 percent oxygen, the partial pressure of oxygen is _____
A) 100 mm Hg
B) 127 mm Hg
C) 151 mm Hg
D) 182 mm Hg
E) 219 mm Hg
Answer: D
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Which is TRUE about amphipathic molecules when placed in an aqueous solution?
A. The interior portion is composed of hydrophilic hydrocarbon chains. B. The outside portion is composed of hydrophilic head groups. C. The interior portion is composed of hydrophobic hydrocarbon chains. D. The interior portion of the micelle is composed of hydrophilic hydrocarbon chains and the outside portion of hydrophilic head groups. E. The interior portion is composed of hydrophobic hydrocarbon chains and the outside portion of hydrophilic head groups.
Classification.Respond to the following statements with reference to the flower parts listed below.
A. Haploid cell that gives rise to the female gametophyte. B. Mitosis and differentiation of this structure produces pollen grains. C. Structure in which a female gametophyte forms. D. Ovules form inside this structure. E. Embryo sporophyte packaged with nutritive tissue inside a protective coat.
What is the term for atoms that are electrically charged as a result of gaining or losing electrons?
A. ion B. molecule C. compound D. isotope
)
A. PAMPs are molecules present only on microorganisms, and they serve as signal molecules for pathogen recognition. B. Viruses do not contain PAMPs because they are not living cells. C. PAMPs are signal molecules found on all organisms, and they help the immune system distinguish self from nonself. D. PRRs are present at all times on phagocytic cells and even lymphocytes, regardless of whether they have encountered their corresponding PAMP. E. Phagocytic cells, such as neutrophils and dendritic cells, only synthesize PRRs once they have encountered the corresponding PAMP. F. Peptidoglycan, LPS, and double-stranded RNA are all PAMPs since they are not present in eukaryotic cells.