Teichoic acids are:
a. waxy substances that are found in some bacterial cell walls that make the cells re-sistant to toxic substances, including ac-ids.
b. glycerol- or ribitol-phosphate polymers that are combined with various sugars, amino acids, and amino sugars, which are a part of the cell wall of gram-positive bacteria.
c. high–molecular-weight polysaccharides that coat some bacterial cells and protect the bacteria from attack by cells of the human defense system.
d. hairlike, proteinaceous structures that ex-tend from the cell.
B
Teichoic acids, mycolic acids, peptidoglycan, and disaccharide-pentapeptide subunits are all building blocks of the bacterial cell wall.
You might also like to view...
In _________ diabetes, glucose levels remain higher than normal
Fill in the blank(s) with the appropriate word(s).
The RNA molecule involved in both transcription and translation is ________ Fill in the blank(s) with the appropriate word(s)
The Carboniferous Period is extremely significant to our current society because
A. mammals diversified. B. human evolution began in the period. C. plants and animals first adapted to a terrestrial environment during this period. D. the Carboniferous forests turned into the coal that fuels modern society.
A cell containing 98% water in its cytoplasm is placed in a 2% salt solution. It should
a. lose water b. gain water c. neither lose nor gain water d. gain salt because of the high rate of diffusion