Read the following statements on lipids and find out correct set of statements:
- Lecithin found in the plasma membrane is a glycolipids
- Saturated fatty acids possess one or more c = c bonds
- Gingely oil has lower melting point, hence remains as oil in winter
- Lipids are generally insoluble in water but soluble in some organic solvents
- When fatty acid is esterified with glycerol, monoglycerides are formed.
Choose the correct answer from the options given below
Read the following statements on lipids and find out correct set of statements:
- Lecithin found in the plasma membrane is a glycolipids
- Saturated fatty acids possess one or more c = c bonds
- Gingely oil has lower melting point, hence remains as oil in winter
- Lipids are generally insoluble in water but soluble in some organic solvents
- When fatty acid is esterified with glycerol, monoglycerides are formed.
Choose the correct answer from the options given below
- (a), (b) and (c) only
- (a), (b) and (e) only
- (c), (d) and (e) only
- (a), (b) and (d) only
The Correct Option is C
Solution and Explanation
To determine the correct set of statements on lipids, we will evaluate each statement listed:
- Statement (a): Lecithin found in the plasma membrane is a glycolipid.
Lecithin is actually a type of phospholipid, not a glycolipid. Therefore, this statement is incorrect. - Statement (b): Saturated fatty acids possess one or more c = c bonds.
Saturated fatty acids do not contain any c = c (carbon-to-carbon double) bonds; they only have single bonds between the carbons. Therefore, this statement is incorrect. - Statement (c): Gingely oil has a lower melting point, hence remains as oil in winter.
Gingely oil, also known as sesame oil, is high in unsaturated fats, which have lower melting points and remain liquid at lower temperatures compared to saturated fats. This statement is correct. - Statement (d): Lipids are generally insoluble in water but soluble in some organic solvents.
This is a characteristic property of lipids. They are hydrophobic and do not dissolve in water but are soluble in organic solvents like ethanol and chloroform. This statement is correct. - Statement (e): When fatty acid is esterified with glycerol, monoglycerides are formed.
When one molecule of fatty acid is esterified with glycerol, a monoglyceride is indeed formed. This statement is correct.
Based on the evaluation:
- Correct Statements: (c), (d), and (e)
The correct answer is:
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Concepts Used:
Biomolecules - Hormones
Hormones are defined as important chemicals that act as messengers of the body. These are the chemicals that are secreted by special glands, known as endocrine glands and these distributed throughout the body. It helps in controlling of physiological functions. Moreover, they are important while maintaining homeostasis in the body. The entire endocrine system is a network of glands. Hormones are almost same as the nervous system. Functioning of various body functions it plays an important role. The only difference between the nervous system and hormones that nervous system uses nerve impulses and neurotransmitters for communication, while the endocrine system uses chemical messengers named hormones.
Types of Hormones:
- Peptide Hormones: Peptide hormones include amino acids that are soluble in water. Insulin is a vital peptide hormone that is produced by the pancreas.
- Steroid Hormones: Unlike peptide hormones, steroid hormones are fat-soluble and can easily pass through a cell membrane with ease. Sex hormones like testosterone, estrogen, etc. are some of the kinds of steroid hormones.