V. fischeri senses the density of V. fischeri cells in the environment by
A) secretion of a molecule that can then be internalized and bound to a receptor in the cytoplasm.
B) cell surface receptors that interact with other cell surface receptors on nearby cells.
C) a cell surface receptor that binds to a molecule secreted by cells in the environment.
D) a cytoplasmic receptor that binds to the LuxC protein.
A) secretion of a molecule that can then be internalized and bound to a receptor in the cytoplasm.
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A cellular junction is: (1) the space between two cells; (2) the point of contact between two cells; (3) the point of contact between a cell and the extracellular matrix
A. Statements (1) and (2) are correct. B. Statements (2) and (3) are correct. C. Statements (1) and (3) are correct. D. All the statements are correct.
Based on the pedigrees that you have generated, does inheritance of Tay-Sachs disease appear to be related to the sex of the offspring
a. Yes b. No
What term best describes the role of certain metal ions and coenzymes in metabolic processes?
a. reactants b. intermediates c. cofactors d. products e. catalysts
Homologous recombination is an important mechanism in which organisms use a "backup" copy of the DNA as a template to fix double-strand breaks without loss of genetic information
Which of the following is not necessary for homologous recombination to occur? (a) 3? DNA strand overhangs (b) 5? DNA strand overhangs (c) a long stretch of sequence similarity (d) nucleases