The basic unit of macro-evolution is SPECIE.
Macro-evolution refers to the theory of evolution in which changes that occur at or above the level of specie recognizes the need to better understand the patterns and processes which operate at the specie and higher levels within a hierarchical framework. Macro evolution is an evolutionary phenomenon, which can include any of the following: origination of new designs, large scale events such as extinction, broad trend and major transitions.
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Answer:
d) II, III, IV, V, Rx, OTC
Explanation:
Based on its potential lethality, harm, addiction potential etc. drugs can be divided into five groups (drug schedule). Schedule I drugs are most restrictive and are not used in treatment and have extremely high addiction potential (heroin, for example). They are illegal substances and are not used in medical treatment. Going down to schedule V drugs are becoming less and less harmful and restricted with less potential for abuse.
Rx drugs are the ones that require a prescription in order to be purchased in the pharmacy.
OTC drugs are, so-called "over the counter" drugs, which can be purchased without prescription, making them the least restrictive.
So, the correct streak, from most to least restrictive drug, is:
II -> III -> IV -> V -> Rx -> OTC
A microbiologist was surprised when he could not recover Helicobacter pylori from gastric biopsies in which organisms were seen in the tissue sections. He was advised to switch from the Campy BAP selective medium to Skirrow's blood agar because the latter is free of cephalothin.
- A broad-spectrum cephalosporin antibiotic called cephalothin is used to treat severe bacterial infections in the urinary tract, skin, bones, and lower respiratory tract.
- A beta-lactam, first-generation cephalosporin antibiotic with bactericidal activity, cephalothin is semi-synthetic.
- Penicillin-binding proteins (PBP) on the inner membrane of the bacterial cell wall are bound by cephalothin and rendered inactive.
- PBPs take involvement in the last phases of bacterial cell wall construction as well as the remodeling of the cell wall during cell division.
- PBP inactivation hinders the cross-linking of peptidoglycan chains, which is essential for the strength and stiffness of bacterial cell walls.
learn more about cephalothin here: brainly.com/question/7385027
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The answer is cellular aging theory. This theory focuses on the ways then that the molecules as well as the cells are being affected by aging and the passage of time. Aside from this theory there are 2 more theories of aging namely the genetic theory and the wear and tear.
