Which of the following organic molecules contain both an amine and carboxyl group?

A. Lipids

B. Proteins

C. Chitin

D. Cellulose

Answer Explanation:

An amine group is a nitrogen atom bonded to three hydrogen atoms, and a carboxyl group is a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group. These groups are important for the formation of amino acids, which are the building blocks of proteins.

Therefore, the Correct Answer is B.

Q #1: The pleura is a connective tissue sheath that covers which of the following organs?

A. Lung

B. Heart

C. Spleen

D. Liver

Answer Explanation

The pleura is a thin membrane that surrounds the lungs and lines the chest cavity. It protects the lungs from friction and infection, and helps them expand and contract during breathing. The other organs listed are not covered by the pleura, but by other types of connective tissue sheaths, such as the pericardium for the heart, the peritoneum for the spleen and liver, and the mesentery for the intestines.
Q #2: The cytoskeleton of a cell is comprised of which of the following macromolecules?

A. Carbohydrates

B. Nucleic acids

C. Proteins

D. Lipids

Answer Explanation

The cytoskeleton of a cell is a complex network of filaments and tubules that provides structural support, shape, movement, and organization to the cell and its components.

The cytoskeleton is composed mainly of proteins, which are macromolecules made of amino acids linked by peptide bonds. The three main types of proteins that form the cytoskeleton are microtubules, microfilaments, and intermediate filaments. Each type has a different structure, function, and distribution within the cell.
Q #3: Testosterone is categorized as which of the following types of hormones?

A. Progestin

B. Androgen

C. Aldosterone

D. Estrogen

Answer Explanation

Testosterone is a hormone that belongs to the class of androgens, which are responsible for the development and maintenance of male characteristics. Androgens are synthesized from cholesterol and can be converted into other types of hormones, such as estrogens and progestins. Aldosterone is a different type of hormone that regulates the balance of salt and water in the body.

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Which of the following organic molecules contain both an amine and carboxyl group?

More Questions on TEAS 7 Science

Q #1: The pleura is a connective tissue sheath that covers which of the following organs?

Answer Explanation

Q #2: The cytoskeleton of a cell is comprised of which of the following macromolecules?

Answer Explanation

Q #3: Testosterone is categorized as which of the following types of hormones?

Answer Explanation

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