No, they don't have organs and organ system.
Cells form tissues, Tissues form organs, Organs forms organ system; Unicellular have their own one cell only. So, it can't possible that they have organs or organ system.
Answer:
An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.
Explanation:
Decrease breathing rate hope it helps
A: Carbon dioxide
B: Carbon dioxide
C: Water and carbon dioxide, Oxygen, a by-product of photosynthesis, and water vapor exit the leaf.
D: the production of chlorophyll, the green pigment in plant leaves that converts energy from light into the carbohydrates plants feed on.
E: Precious Minerals.