Penicillins disrupts bacterial cell wall synthesis.
<h3>
How does penicillin affect bacterial cell walls?</h3>
- Penicillin kills bacteria by inhibiting the proteins which cross-link peptidoglycans in the cell wall .
- When a bacterium divides in the presence of penicillin, it cannot fill in the “holes” left in its cell wall.
- β-Lactam antibiotics, including penicillins, cephalosporins, monobactams, and carbapenems, are distinguished by a lactam ring in their molecular structure and act by inhibiting the synthesis of the peptidoglycan layer of bacterial cell walls.
- Penicillins work by bursting the cell wall of bacteria. Drugs in the penicillin class work by indirectly bursting bacterial cell walls.
- They do this by acting directly on peptidoglycans, which play an essential structural role in bacterial cells.
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Answer:
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Crustaceans Insects <span>Arachnids belongs to phylum arthopoda and insects have both wings and antennae whereas crustaciens like crab shrimps have no wings but antennae and archanids have none of them
</span>so correct option for statment
<span>The species of which of these groups show neither wings nor antennae is
C
hope it helps</span>
Answer;
+1,-1,+2,-2,+3,-3
Explanation;
-Valence is the number of electrons lost or gained to complete an element's outer energy level.
-When an atom gains or loses a valence electron, it forms an ion. Atoms form ions in order to help another to obtain a full octet and to stabilize the valence.
-Some atoms gain or lose electrons to form ions because they need to become more stable. They sometimes give them to have an outer shell or gain them to get a closer charge to eight.
Yes it is alive . It respires , photosynthesizes and grows . It reacts to stimuli ( sunlight ) and tries to survive by adapting to the environment . Its' billions of cells form into transport vessels , roots , leaves and other structures to facilitate the creation and use of energy .