Lipopolysaccharide is located in the ______ ______ of the cell envelope of gram-negative bacteria.
Fill in the blank(s) with the appropriate word(s).
outer membrane
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E. All of the choices are correct.
A. They are involved in cell motility. B. They require ATP to work. C. They are composed of microfilaments. D. They require motor proteins to work. E. They are composed of an internal structure called the axoneme.
Since the Industrial Revolution, the amount of methane in the atmosphere has __________,
and the amount of nitrous oxide has __________.
a. decreased; decreased b. decreased; increased c. increased; decreased d. increased; increased
What type of tissue, consisting of a single layer of flattened cells, is designed to allow the easy diffusion of oxygen
from blood to tissue? a. simple connective b. simple squamous epithelium c. stratified columnar epithelium d. pseudostratified epithelium e. compound epithelium
The formation of the ________ cavity and the differentiation of the embryonic disk into ectoderm and endoderm occurs at the end of the pre-embryonic period of development
Fill in the blank(s) with correct word