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Q. What are the difference between plasma membrane and cell wall?
Plasma membrane and cell wall is not the same thing. Plasma membrane, also known as cell membrane, is the external membrane common to all living cells and it is made of embedded proteins, phospholipid bilayer and some appended carbohydrates.
Because cell membranes are fragile, in some kinds of cells there are even outer structures that support and defend the membrane, like the cellulose wall of plant cells and the chitin wall of some fungi cells. Most bacteria also present an external cell wall made of peptidoglycans and other organic substances.
In the sarcomere of a skeletal muscle, there are A. myosin molecules in the I band. B. both tropomyosin and myosin molecules in the region of the A band that is not in the H
What is Energy ? Energy Energy is defined as the capacity to do work. Work is defined as the movement of a mass, or the product of the force and the distance through which t
Q. What are the poriferans? The phyla Porifera include the simplest creatures of the animal kingdom. Sponges are aquatic sessile beings they are not able to move by themselves
What are all teh parts of a simple ciliated columnar epithilial cell?
what animals use indirect respiration?
What are the excretory organs in protozoa.
Are sperms being attacked by the body since they are foreign?
what''s the role of lungs in terms of excretion? Like the trachea what''s its role in excretory system?
Q. What is Oral Rehydration Therapy? Oral Rehydration Therapy (ORT) refers to providing fluids and/or oral rehydration salt solutions to the patient. An oral rehydration soluti
Q. How do calcium ions participate in muscle contraction? Why do both muscle relaxation and muscle contraction spend energy? In the muscle cells calcium ions are stored within
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