Pratik was performing an experiment to test for the presence of starch and
glycogen in different types of foods. He treated four food samples with a Lugol's
iodine reagent. This solution is brown-yellow, but it produces a blue-black color
when it reacts with starch and a brown-blue color when it reacts with glycogen.
Which samples would test positive for starch or glycogen in this
experiment? Select all that apply.
Banana
Table sugar
Liver
Potato flakes

the statement is true

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

the answer is :

the answer is c.

by: nicholas dooley