Molecular biology is the branch of biology that seeks to understand the molecular basis of biological activity in and between cells, including molecular synthesis, modification, mechanisms, and interactions. The study of chemical and physical structure of biological macromolecules is known as molecular biology. (https://www.ncbi.nlm.nih.gov/books/NBK21122/)
Fleas (Siphonaptera) are ectoparasitic blood-sucking insects with the ability to jump, which commonly infest wild and domestic animals (mainly dogs and cats) but also humans. In addition to serious dermatological conditions mainly related to allergic reactions, fleas can be vectors for various pathogens. (European Centre for Disease Prevention and Control (ECDC), 2023. Fleas (Siphonaptera) - Factsheet for health professionals. https://www.ecdc.europa.eu/en/infectious-disease-topics/related-public-health-topics/disease-vectors/facts/fleas-siphonaptera)
Otariidae, Phocidae is not a taxonomic category per se, but a statistical category (FAO ASFIS list) which includes two different families, Otariidae and Phocidae. (AGROVOC Team)
The molecular weight (or molecular mass or relative molecular mass (RMM)) is the sum of the atomic weights of all the atoms in the molecule. (https://www.ncl.ac.uk/webtemplate/ask-assets/external/maths-resources/molar-calculations.html)
