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(B) The correct answer is $B$. $A$ is correct: Osmosis is the movement of water across a semipermeable membrane,which depends on the solute concentrat

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Plasma membranes contain chitin sugar in plants.

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(B) The correct answer is $B$. $A$ is correct: Osmosis is the movement of water across a semipermeable membrane,which depends on the solute concentration. $B$ is incorrect: Plasma membranes in plants are composed of lipids and proteins; they do not contain chitin. Chitin is a structural polysaccharide found in the cell walls of fungi and the exoskeletons of arthropods,not in plant plasma membranes. $C$ is correct: Biological membranes are primarily composed of a phospholipid bilayer with embedded proteins. $D$ is correct: Since the membrane is lipid-based,substances that are lipid-soluble (soluble in organic solvents) can diffuse through the membrane easily.

Similar Questions

Identify the type of cell and write one characteristic feature for each of the following descriptions:
$(i)$ Large vacuole,nucleus pushed to the periphery.
$(ii)$ Cell does not burst even in a very dilute medium.
$(iii)$ Nuclear region is not well-defined and is known as the nucleoid.

When a living plant cell loses water through osmosis,there is contraction of the contents of the cell away from the cell wall. What is this phenomenon called?

Which of these options are not a function of Ribosomes?
$(i)$ It helps in manufacture of protein molecules
$(ii)$ It helps in manufacture of enzymes
$(iii)$ It helps in manufacture of hormones
$(iv)$ It helps in manufacture of starch molecules

Name the cell organelles which are without a membrane.

$A$ person takes a concentrated solution of salt; after some time,he starts vomiting. What is the phenomenon responsible for this situation? Explain.

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