D. Heterotrophs
EXPLANATION: Heterotrophs cannot produce its own food so it kills and eats other organisms for energy. Plants are autotrophs which means they can make their own foods.
Answer:
The most radioactive purified biological molecule will be RNA
Explanation:
RNA (ribonucleic acid) like DNA, is a long, unbranched macromolecule consisting of nucleotides joined by 3' - 5' phosphodiester bond.
In the cultured yeast, RNA is the most radioactive purified biological molecule because RNA is normally single stranded and does not undergo mutation, replication nor transcription.
Hence, it conserves the ultraviolet light absorbed from the radioactive phosphate during the culturing of yeast
It is C) Amylase is a catalyst that speeds up the chemical process of breaking down food molecules.
