Question

question 9
1.75 pts
the ________ equals the number of protons of an element.

• atomic number
• atomic mass
• mass number

question 10
1.75 pts
a complete protein contains an adequate amount of each of the nine essential amino acids; plants are an excellent source of these proteins.

• true
• false

Explanation:

Question 9

In chemistry (a subfield of Natural Science), the atomic number of an element is defined as the number of protons in its nucleus. Atomic mass is the average mass of an atom's isotopes, and mass number is the sum of protons and neutrons. So the correct term is atomic number.

Complete proteins (with all nine essential amino acids in adequate amounts) are typically found in animal - based foods like meat, dairy, and eggs. Most plant - based proteins are incomplete (lack one or more essential amino acids), though some combinations of plant proteins can be complete. So the statement that plants are an excellent source of complete proteins (with all nine essential amino acids) is false.

Answer:

A. atomic number

Question 10