Please help!! Will give Brainliest! 3. The diagram below shows how proteins are assembled by ribosomes. A substance called tRNA delivers molecules, and a substance called mRNA provides the ribosome with the sequence in which the molecules should be connected in order to build each protein.
a) Based on your knowledge of protein synthesis, what type of molecule is labeled "X" in the diagram? (2 points)

(X)-0-0 l l
(Ribosome)-GCA
CGUAAUGCGUCGU-(mRNA)CAGU

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

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.

looks like the answer is     c     to me!