Make a personal spider repellent to repel spiders and ticks. To make the personal repellent, mix 1 tsp. of essential lavender oil with 8 oz. of your favorite sunscreen, face lotion, body lotion or aloe vera gel. Shake the mixture well to combine the ingredients. Slather it on your skin as often as desired.
| Share | Cite. virus, parasite with a noncellular structure composed mainly of nucleic acid within a protein coat. Most viruses are too small (100â2,000 Angstrom units) to be seen with the light microscope and thus must be studied by electron microscopes. Share | Cite. virus, parasite with a noncellular structure composed mainly of nucleic acid within a protein coat. Most viruses are too small (100â2,000 Angstrom units) to be seen with the light microscope and thus must be studied by electron microscopes.
The Structure of DNA Nucleic acids are made up of chains of many repeating units called nucleotides (see bottom left of Figure 1 below). The DNA molecule actually consists of two such chains that spiral around an imaginary axis to form a double helix (spiral.) Nucleic acid molecules are incredibly complex, containing the code that guarantees the accurate ordering of the 20 amino acids in all proteins made by living cells.