Question

which of the following statements best describes living cells?
a. living cells are primarily made up of a wide variety of elements, including over 100 different types of elements.
b. living cells are composed of a limited number of essential elements, such as carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur.
c. living cells are made exclusively of carbon.
d. living cells contain a mix of molecules primarily made of metals as well as hydrogen and oxygen.

Explanation:

Living cells are composed of a limited number of essential elements such as carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. This is a fundamental concept in biology. Option A is incorrect as living cells are not made up of over 100 different types of elements. Option C is wrong because living cells are not made exclusively of carbon. Option D is incorrect as metals are not the primary components along with hydrogen and oxygen in the way described.

Answer:

B. Living cells are composed of a limited number of essential elements, such as carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur.