Dna evidence that is old or in poor condition can sometimes be salvaged and analyzed by using

pcr amplification
gel electrophoresis
dna from the mitochondria instead of the nucleus
rna

Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation

What is a photon? a. part of a ribosome b. a light particle c. a carbon dioxide molecule d. part of a chloroplast b.a light particle

In the diagram below, which organelle is a ribosome, which combines amino acids and produces proteins? оооо