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 TO YOUR QUESTION IS THAT WATER IS A (raw material)
Answer:
A hummingbird feeding: Mutualism
Explain Interaction: The hummingbird drinks the nectar from the flower and the hummingbird may help pollinate the flower.
I'm a bit confused by the plants on the floor one.
Plants on a Forest Floor: Competition
Explain Interaction: The plants on the forests floor compete with each other for the same resources. Both may not receive enough of those resources. Note: When I was around Middle School and High-school I was only taught mutualism, commensalism, and parasitism, so let me know if competition is not a choice your teacher gives you to choose from or wasn't taught to you
Flea bites human: Parasitism
Explain Interaction: The flea drinks the persons blood as food and the person is hurt. Flea bites can be itchy and become painful. Fleas may also also carry disease.
Clownfish in Anemone: Mutualism (although I hear some people say commensalism)
Explain Interaction: The anemone provides protection and a place to live for the clownfish. The anemone may eat bits of food left over from the clownfish.
Answer:
39.60 m/s
Explanation:
An appropriate formula is
v = √(2gd) = √(2·9.8 m/s^2·80 m) ≈ 39.60 m/s
Answer:
a. generated during bacterial infections
Explanation:
Free radicals are atoms with an unpaired electron which make them highly reactive. Many of these are necessary for life, such as the intracellular killing of bacteria by phagocytic cells such as granulocytes and macrophages
