Precipitation occurs when
A. antigen combines with antigen.
B. antibody combines with antibody.
C. antibody combines with antigen.
D. antibody combines with antigen at optimal proportions.
D
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All ciliates have cilia at some point during their life cycle, and some use the cilia not just for movement but also to direct food as well
Indicate whether the statement is true or false.
Which of the following is the correct order of the levels of DNA packaging in eukaryotic chromosomes?
A) nucleosome ? chromatin fiber ? looped domains ? heterochromatin B) nucleosome ? looped domains ? chromatin fiber ? heterochromatin C) heterochromatin ? nucleosome ? chromatin fiber ? looped domains D) chromatin fiber ? heterochromatin ? nucleosome ? looped domains E) chromatin fiber ? nucleosome ? looped domains ? heterochromatin
Bile has a role in _____ digestion and absorption
a. carbohydrate c. protein b. fat d. amino acid
The most stable gut species include
a. Fusobacteria. b. Streptococcus. c. Lactobacillus. d. Bacteroides.