Answer:
Option-A
Explanation:
Penicillin is an antibiotic drug that is derived from the fungal species of Penicillium molds especially the<em> Penicillium notatum</em>. The penicillin acts by disrupting the formation of the cell wall and thus prevents the growth of the bacteria.
The discovery of penicillin was accidental when he was studying the petridish of staphylococcus and he found that due to avoidance while the experiment, molds grew in the petridish. The area around the mold was clear and clear rings without the bacteria were easily observed. This lead to the discovery of the penicillin compound.
Thus, Option-A is the correct answer.
<h2>Answer:</h2>
The correct option is B which is micropyle.
<h3>Explanation:</h3>
- Generally micropyle is known as the opening in the ovule or egg from which sperm enters the egg.
- But at the time of germination it is used to absorb water and nutrients.
- It is the micropyle from which the root emerges from the seed.
Lipid Bilayer.A plasma membrane is made up of Lipid Bilayers, which consists of polar phosphate heads, which are hydrophilic or water loving, and non-polar fatty acid tails, which are hydrophobic. Proteins are embedded in the membrane as well.Cell membranes are known to have holes, or selective permeable.
Linda’s belief in her capabilities is known as self-efficacy.
<u>Explanation:</u>
The concept of self efficacy was proposed for the first time by psychologist Albert Bandura. According to him self –efficacy means the ability of a person to execute courses of action that are required to deal with prospective situations. Self-efficacy determines the power of a person to face challenging situations and the choices he or she makes in life.
An individual’s external experiences and self perception are crucial in the development of self-efficacy. People with high self-efficacy tend to give a try in mastering even the hardest tasks rather than trying to avoid them.
This question is quite difficult
