The following statements summarizes the results of an experiment related to exocytosis or endocytosis. In this case, explain the relevance of the experiment and its result to our understanding of these processes. Addition of the drug colchicine to cultured fibroblast cells inhibits movement of transport vesicles. 1. Colchicine is a drug that prevents intermediate filament assembly, thereby disrupting intermediate filaments-based functions 2. Colchicine is a drug that prevents endocytosis, thereby disrupting phagocytic functions. 3. Colchicine is a drug that prevents microfilament assembly, thereby disrupting microfilament-based functions 4. Colchicine is a drug that prevents microtubule assembly, thereby disrupting microtubule-based functions.

In which process is oxygen absorbed by an organism asap apex

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?