Microtubules have several other important functions. all but one is a function of cellular microtubules.
a) function in intracellular transport.
b) aid in cell division and chromosome movement.
c) aid in assembling amino acids during protein synthesis.
d) function in movement as they compose the cilia and flagella of animal cells.

The correct answer would be option C.

Microtubules are the polymers of globular protein tubulin. They have hollow and fibrous structure. They are one of the components of the cytoskeleton.

They serve several functions in the cell such as: provide support to a cell, help in intracellular transportation, movement of cellular organelles, movement of chromosomes during cell division, and cell movement by forming cilia and flagella.

However, they do not play any specific role in assembly of amino acid during protein synthesis.

This function is associated with tRNA which carries specific amino acid to the ribosomal site where protein synthesis takes place.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

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