Progesterone is a steroid hormone that is usually made by the adrenal cortex along with the gonads, which consists of the ovaries and testes
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He observed dairymaids milking cows with cowpox to see if the statement was true before forming a hypothesis.
Answer:
Explanation:Bacteria are all single-celled. The cells are all prokaryotic. This means they do not have a nucleus or any other structures which are surrounded by membranes. Larger bacterial cells may be visible using a light microscope, however an electron microscope would be needed to see the details of the cell organelles.
Taxonomy is the science of naming and classifying organisms based on structural comparisons and genetic evidence.
Taxonomy is the science of finding, describing, classifying and naming biological organisms (plants, animals and microorganisms) based on shared characteristics and genetic evidence. Organisms are arranged into taxonomic ranks, and groups of a certain rank can be combined to form a higher rank, thereby forming taxonomic hierarchy. The main ranks that are used in taxonomy currently are domain, kingdom, phylum, class, order, family, genus and species.