Genetic variation is the variation in the DNA sequence in the genome of an organisms. Organisms of a species have similar characteristics but they are not identical due to genetic variation. Genetic variation is important in the survival and the adaptability of a given species of organism. Therefore, in this case lack of genetic variation necessary to adapt to change in the environment will lead to extinction of the fish species that lacks the variation.
Tertiary consumer because you have no predators trying to eat you. You are at the top of the food web
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.
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Eukaryotes are single cellular organisms so A D C
1. an organism that doesn’t have a nucleus nor membrane bound organelles.
2. an organism that does have a nucleus and membrane bound organelles.
3. the similarities between prokaryotic and eukaryotic cells are the cell membrane, cytoplasm, and both contain DNA.
4. parts of a prokaryotic cell may include the plasma membrane, the cytoplasm, the DNA, and the ribosomes.
5. an example of prokaryotic are bacteria like E. Coil.
6. these are examples because E. Coil is a bacteria that doesn’t have membrane bound organelles.
