Question

From the following list, select the statement that is incorrect for the corresponding organelle Select one: a. Nucleus - surrounded by a double membrane and a mesh of microfilaments underneath to protect it from damage b. Mitochondria - double membrane organelle where, in the presence of oxygen, most chemical energy is generated c. Chloroplast - Organelle thought to be the result of a endosymbiosis event where CO2 is reduced to carbohydrates d. All statements regarding their corresponding organelles are true e. Peroxisomes - single membrane organelle responsible of the metabolization of H202

Answer 1

Solution:

Correct option D - All statements regarding their corresponding organelles are true.

• Nucleus is a double membrane bound organelle, it is covered underneath by microfilament fibres which provide the mechanical stability.
• Mitochondria is a double membrane bound organelle , It is involvedin production of most of energy in cell in presence of Oxygen
• Chloroplast and mitochondria are assumed to be as primitive cells which undergone endosymbiosis .Chloroplast is involved in the photosynthesis ,where CO2 is fixed and converted into carbohydrates.
• Peroxisomes are single membrane bound organelle which are mainly involved in lipid metabolism and hormonal biosynthesis. It is oxidative in function, it also utilses the H2O2(hydrogen peroxide) produced in cell ,which is very reactive species, to either converted it into water molecule or oxidation of other organic molecules.

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