A major function of natural killer cells is to Group of answer choices Attack amd kill pathogenic bacteria in a nonspecific way. Attach virus infected cells in a nonspecific way. Attach virus infected cells in an antigen specific way. Phagocytize microorganisms that have been tagged with antibodis.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.