Question

Proteins are important architectural and catalytic components within the cell, helping to determine its chemistry, its shape, and its ability to respond to changes in the environment. Remarkably, all of the different proteins in a cell are made from the same 20 __________. By linking them in different sequences, the cell can make protein molecules with different conformations and surface chemistries, and therefore different functions.

(a) nucleotides.
(b) sugars.
(c) amino acids.
(d) fatty acids.

Answer 1

The different proteins in a cell are made from the same 20 amino acids, which are arranged in different sequences to give proteins their unique shapes and functions.

Step-by-step explanation:

Proteins are essential for various functions within cells, including acting as enzymes, carriers, hormones, and providing structural integrity. All proteins are constructed from a set of 20 different amino acids, which are the monomers or building blocks that join together to form polypeptides. The sequence in which these amino acids are linked determines the protein's three-dimensional shape, which in turn defines its function. So, the different proteins in a cell are made from the same 20 amino acids, just arranged in different sequences.

The correct answer to the question is: (c) amino acids.