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Chapter 2: Problem 7

Nitrogen would be found in which categories of molecules unique to organisms? (page 28 )

Short Answer

Expert verified
Nitrogen is found in two categories of molecules unique to organisms: proteins and nucleic acids. Proteins contain nitrogen due to the presence of amino acids, while nucleic acids, like DNA and RNA, contain nitrogen in their nucleotide's nitrogenous bases.

Step by step solution

01

Recall the major types of biological macromolecules

There are four main categories of biological macromolecules found in living organisms: carbohydrates, lipids, proteins, and nucleic acids.
02

Identify the categories containing nitrogen

Now, we examine each category to determine which ones have nitrogen in their structure: 1. Carbohydrates: These are composed of carbon, hydrogen, and oxygen atoms. They don't contain nitrogen. 2. Lipids: These are composed mainly of carbon and hydrogen atoms, with some lipids possessing oxygen and phosphorus. Generally, lipids do not contain nitrogen. 3. Proteins: Proteins are composed of amino acids, which contain carbon, hydrogen, oxygen, and nitrogen. Therefore, proteins contain nitrogen. 4. Nucleic acids: These are composed of nucleotides, which contain nitrogenous bases. Nucleic acids, such as DNA and RNA, contain nitrogen in their structure.
03

Summarize the answer

Based on the analysis, nitrogen can be found in two categories of molecules unique to organisms: proteins and nucleic acids.

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Most popular questions from this chapter

What are the subunits of a triglyceride? What is the difference between a saturated and an unsaturated fatty acid? What are the functions of fats in the body? (pages \(31-33\) )

An example of a hydrolysis reaction is a. amino acid \(+\) amino acid \(\rightarrow\) dipeptide \(+\mathrm{H}_{2} \mathrm{O}\). b. dipeptide \(+\mathrm{H}_{2} \mathrm{O} \longrightarrow\) amino acid \(+\) amino acid. c. denaturation of a polypeptide. d. Both b and c are correct.

What is true of a solution that goes from pH 5 to \(\mathrm{pH} 8 ?\) a. The \(\mathrm{H}^{+}\) concentration decreases as the solution becomes more basic. b. The \(\mathrm{H}^{+}\) concentration increases as the solution becomes more acidic. c. The \(\mathrm{H}^{+}\) concentration decreases as the solution becomes more acidic.

The difference between one amino acid and another is found in the ____________ group. a. amino b. carboxyl c. \(R\) d. All of these are correct.

What are buffers, and why are they important to life? (pages \(28-29)\)
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