The chemical nature of endotoxins is that of a
A. protein.
B. nucleic acid.
C. lipid.
D. lipopolysaccharide.
D
Biology & Microbiology
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The cell is the smallest level of biological organization that can display all the characteristics of life.
Answer the following statement(s) true (T) or false (F)
Biology & Microbiology
Histones are positively charged proteins that complex with DNA in eukaryotic chromosomes
a. True b. False
Biology & Microbiology
Which of the following is not a pyrimidine?
A. Thymine B. Uracil C. Adenine D. Cytosine
Biology & Microbiology
The underlying problem with cystic fibrosis is
A. the inability to transport chloride ions. B. mutations in the hemoglobin molecule. C. defective ganglioside molecules. D. the inability to metabolize certain amino acids. E. abnormal fat deposits around the heart.
Biology & Microbiology