The lateral movement of transmembrane proteins can be restricted by several different mechanisms. Which mechanism best describes the process by which a budding yeast cell designates the site of new bud formation during cell division?
(a) proteins are tethered to the cell cortex
(b) proteins are tethered to the extracellular matrix
(c) proteins are tethered to the proteins on the surface of another cell
(d) protein movement is limited by the presence of a diffusion barrier
(a)
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A) become acidic inside the vesicles when NADH is added B) become alkaline inside the vesicles when NADH is added C) make ATP from ADP and i if transferred to a pH 4 buffered solution after incubation in a pH 7 buffered solution D) hydrolyze ATP to pump protons out of the interior of the vesicle to the exterior E) reverse electron flow to generate NADH from NAD+ in the absence of oxygen
Resource partitioning in communities is a strategy that ________
a. allows a species to exploit its fundamental niche b. reduces intraspecific competition c. reduces interspecific competition d. allows a species to maximize competitive exclusion
Homeobox genes
A) encode proteins with a conserved sequence of amino acids. B) are important in development. C) are conserved in multicellular animals. D) are transcription factors. E) All of these
S. aureus is gram negative
True or false