A prion is a disease-causing agent composed of
a. cells.
b.
c. protein alone.
d. nucleic acid alone.
Cell is the basic structural, functional, and biological unit of all known organisms. The cell organelles include cell membrane, nucleus, mitochondria, golgi apparatus, endoplasmic reticulum, vacuoles, centrosomes, lysosomes, peroxisomes, and chloroplasts (only present in plants).
Nucleic acid is a long chainlike molecule composed of nucleotides found in cells of all living organisms and viruses. The function of nucleic acid is storage and expression of genetic material. The term nucleic acid is overall used to describe DNA (Deoxyribonucleic acid) and RNA (Ribonucleic acid).
Protein is a macromolecule consisting of one or more long chains of amino acids. Protein is the basic building block of the muscle cells in the body and is commonly found in animal products, nuts and legumes.
A protein coat is called capsid and is the shell-like covering which encloses genetic material (nucleic acid). This protein coat is commonly found in viruses.
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