As part of their research on cell reproduction, ms. kelly's biology class designed various experiments to determine the best conditions for budding, or asexual reproduction, in common yeast cells. one group of students placed yeast in a test tube with warm water and table sugar as a source of food. they used a light microscope to observe the yeast cells. one student noted that after the cells grew for a while, a bud formed. ms. kelly asked approximately how large the yeast cells were when they began budding. which is the most likely unit for measuring the size of a typical mature yeast cell?

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.