Question

1. which of the following statements is true? (1 point)

choice a carbon, hydrogen, and oxygen are the only elements in living things
choice b amino acids are the only building blocks of proteins
choice c sugar molecules can be used to build other molecules besides proteins
choice d nitrogen is not important for life

Explanation:

A is false as there are other elements. B is true as proteins are made of amino - acids. C is true as sugars can form other molecules. D is false as nitrogen is crucial for life.

Answer:

B. Amino acids are the only building blocks of proteins; C. Sugar molecules can be used to build other molecules besides proteins