Biomolecule Category: Understanding Starch
This question asks us to classify Starch into its correct category of biomolecules. Biomolecules are large organic molecules essential for life, typically polymers made from smaller subunits.
Major Biomolecule Categories Explained
Let's look at the main types of biomolecules:
- Proteins: Built from amino acids, proteins have diverse functions like enzymes, structural components, and transport.
- Carbohydrates: These include sugars and starches, made from monosaccharide units (like glucose). They are a primary source of energy and can be structural.
- Lipids: A diverse group including fats and oils, primarily used for long-term energy storage and forming cell membranes. They are generally insoluble in water.
- Nucleic Acids: DNA and RNA are nucleic acids, built from nucleotides. They carry genetic information and are involved in protein synthesis.
Classifying Starch
Starch is a common example of a Carbohydrate. Specifically, it's a polysaccharide, meaning it's a complex carbohydrate made up of many simple sugar units (monosaccharides), primarily glucose (\(C_6H_{12}O_6\)), linked together.
Key points about starch:
- It serves as a major energy storage molecule in plants.
- It is digestible by humans and provides energy.
- It is chemically distinct from proteins, lipids, and nucleic acids.
Since starch is composed of glucose units and serves as an energy source, it clearly falls under the Carbohydrate classification.
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Important Questions from Biomolecules
The chemical name of Vitamin D 3is:
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III. Pasta
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Following are the pKa's of the ionizable groups in lysine
pKa 1 = 2.16 (α - carboxylic group)
pKa 2 = 9.06 (α - amino group)
pKa 3 = 10.54 (ε - amino group)
Which one of the following options represents the pl of lysine?
How many hydrogen bonds involving the backbone CO and NH can be observed in an α‐helix consisting of 15 amino acid residues?
In eukaryotic cells, covalently attached lipids help to anchor some water soluble proteins to the plasma membrane. One group of cytosolic proteins are anchored to the cytosolic face of membrane by a fatty acyl group (e.g. myristate or palmitate). These groups are generally covalently attached to which amino acids present at the N‐terminus of the polypeptide chain?
