What are the molecules A, B, and C? They are peptides. They are monosaccharides. They are fatty acids. They are triglycerides. They are amino acids.
Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
What are the molecules A, B, and C?
- They are peptides.
- They are monosaccharides.
- They are fatty acids.
- They are triglycerides.
- They are amino acids.
![### Structural Diagrams of Amino Acids
The image contains structural diagrams of three different amino acids labeled A, B, and C. Below is a detailed description of each structure:
#### Diagram A:
- This diagram shows an amino acid with the following structure:
- The central carbon (C) is bonded to four different groups:
- An amino group (NH₂).
- A carboxyl group (COOH) with one double-bonded oxygen (O).
- A hydrogen atom (H).
- A side chain, which is a simple hydrogen (H), indicating Glycine as the amino acid.
#### Diagram B:
- This diagram represents an amino acid with:
- The central carbon (C) bonded to:
- An amino group (NH₂).
- A carboxyl group (COOH) with one double-bonded oxygen (O).
- A hydrogen atom (H).
- A side chain consisting of a CH group bonded to two CH₃ groups, indicating Valine as the amino acid.
#### Diagram C:
- This structure depicts an amino acid characterized by:
- The central carbon (C) connected to:
- An amino group (NH₂).
- A carboxyl group (COOH) with one double-bonded oxygen (O).
- A hydrogen atom (H).
- A side chain comprising CH₂ linked to an OH group, indicating Serine as the amino acid.
### Explanation
These diagrams represent the basic structure of amino acids, which are the building blocks of proteins. Each amino acid consists of a central carbon atom (alpha carbon) linked to an amino group, a carboxyl group, a hydrogen atom, and a distinct side chain that defines the unique characteristics of each amino acid. The side chain (R group) varies among different amino acids, imparting different properties and functions to them.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4a3ba5c9-3580-45cd-ae24-18a07977dcd9%2F5351d25f-741c-48d0-8ae7-fe8302d9719e%2F7sfkkrn_processed.jpeg&w=3840&q=75)
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