Which pairing of organism and the chemical component of its cell wall is matched incorrectly?
A) Protista: cellulose, silica, or other components
B) Plants: cellulose
C) Animals: cholesterol
D) Bacteria: peptidoglycan
E) Fungi: chitin
Answer: C
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What phagocyte initiates inflammation?
A) natural killer cells B) cytotoxic T cells C) macrophages D) mast cells E) helper T cells
A latent variable is one that:
A. will create endogeneity problems in your regression model. B. can be used instead of an instrumental variable in two-stage least squares. C. will cause multi-collinearity problems. D. cannot be observed, but information about it can be inferred from other observed variables.
Most cases of pharyngitis are caused by Group A ß-hemolytic streptococci
Indicate whether the statement is true or false
The classic "beads-on-a-string" structure is the most decondensed chromatin structure possible and is produced experimentally. Which chromatin components are not retained when this structure is generated?
(a) linker histones (b) linker DNA (c) nucleosome core particles (d) core histones