Answer:
June 21
Explanation:
The earth's revolution around the sun and the moons revolution combine together to make the day faster.
Dichotomous key is the technique which uses a series of criteria and questions referring to physical characteristics to classify species.
<h3>What is Dichotomous key? </h3>
This was created by scientists to help classify different types of species in the ecosystem.
This employs the use of questions to contrast species in order to look for similar features to group them.
Read more about Dichotomous key here brainly.com/question/1726339
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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.
To learn more about Penicillin from the given link
brainly.com/question/11849121
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A shark because its more cartilage than actual bone.
