Tag: chemical organization in living beings
Questions Related to chemical organization in living beings
.............. cells/tissue in the body contains average of 18.5% of protein and lipids constituting 3%?
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Fat
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Muscle
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Bone
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Red blood cell
The average amount of protein present in muscle is 18.5%. Lipids constitute 3% in muscle
Which of the following is the highest energy rich compound?
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Creatinine phosphate
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Protein
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Carbohydrate
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Fat
Respiration is the oxidation process in which reduced biomolecules like carbohydrates, fats, proteins etc are oxidised to release energy, which can be used for cellular processes. Fats are most reduced biomolecules and their oxidation releases maximum amount of energy. The energy released in oxidation of one gram of fat is twice the energy released in oxidation of one gram of carbohydrate. Hence, carbohydrates are used as an energy reserve biomolecules in living systems.
The structural lipids of cell are
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Phospholipids
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Simple lipids
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Steroids
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Chromolipids
Phospholipids are a class of lipids that are a major component of all cell membranes as they can form lipid bilayers. Most phospholipids contain a diglyceride, a phosphate group, and a simple organic molecule such as choline; one exception to this rule is sphingomyelin, which is derived from sphingosine instead of glycerol.
Lipids are insoluble in water, because lipids molecules are ___________.
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Neutral
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Zwitter ions
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Hydrophobic
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Hydrophilic
Lipids are hydrophobic means water hating. They are water insoluble. Lipids are non-polar molecules while water is polar molecule, so there is no way for water to attach to a lipid molecule. Instead, the non-polar lipids will bind to themselves, which is why oils and fats form droplets on the surface of water.
Fats are also known as
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Lipids
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Proteins
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Carbohydrates
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Nucleic acids
Which biomolecule is made up of only carbon, hydrogen and oxygen?
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Lipids
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Proteins
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Carbohydrates
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Nucleic acids
Proteins are the polymers of amino acids and have C, H, O, N and S. Carbohydrates and nucleic acids have C, H, O, N, P and S. Lipids are chemically diverse group and mostly have long hydrocarbon chain composed of C, H and O. Thus, the correct answer is A.
Maximum percentage of lipoprotein is present in
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Chylomicron
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HDL
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VDL
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VLDL
Sphaerosomes have
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Cellulose reserve
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Protein reserve
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Lipid reserve
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Both protein and lipid reserve.
Which of the following is not a lipid?
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Wax/ lecithin
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Sterol/ cholesterol
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Glycerol/ maltose
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Lecithin/ Ghee
Select the wrong statement?
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The protein part of the holoenzyme is called the apoenzyme
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Thylakoids are arranged one above the other like stack of coins forming a granum
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Building blocks of lipid are amino acids
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Cross-over occurs at pachytene stage of meiosis I
Cofactor is a nonprotein part of the enzyme. It can be metal ions or the organic chemical. The cofactors which are organic chemicals are known as coenzyme. These are loosely attached to the apoenzyme. The tightly bound coenzymes are prosthetic group.