During one cycle, the sodium-potassium pump binds and moves:
What will be an ideal response?
3NA and 2K
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Which of the following is NOT a function of mucilage in bacteria?
A. protection against a host's immune system B. facilitating acquisition of mineral nutrients C. acting as a flotation device D. nitrogen fixation E. holding cells together for communication among them
How can microarrays help us understand cellular functions?
a. Microarrays let us study different cells under different conditions. b. Microarrays let us directly measure protein expression in individual cells. c. Microarrays, by hybridizing cDNAs to DNA sequences already present on a chip, let us identify which portions of a genome were being expressed in a cell at a particular time. d. Microarrays let us identify which DNA sequences are present in a particular cell type under certain conditions. e. Microarrays, by hybridizing DNA to cDNA sequences already present on a chip, let us identify which portions of a genome were being expressed in a cell at a particular time.
The human skeleton is a typical vertebrate
A. exoskeleton. B. hydrostatic skeleton. C. axial skeleton only. D. endoskeleton. E. appendicular skeleton only.
In a plant, most water is transported vertically by being pushed to the top
____________________ Indicate whether the statement is true or false.