The component of an atom that possesses relatively little mass, thus being negligible in calculating the atomic mass number, is the:

A. Electron

B. Quark

C. Neutron

D. Proton

Answer Explanation:

Rationale

Electrons are subatomic particles that have relatively little mass and are negligible when calculating atomic mass. The atomic number is usually the sum of protons and neutrons in the nucleus of the atom.

Therefore, the Correct Answer is A.

Q #1: Which of the following distinguishes endocrine and exocrine glands from another?

A. The presence or absence of ducts

B. The effect their secretions have on the target cells

C. The biochemistry of their secretions

D. The presence or absence of nerve innervation

Answer Explanation

Exocrine glands secrete their products into ducts that carry them to the target organs. In contrast, endocrine glands secrete their products directly into the bloodstream, which carries them to target cells throughout the body.
Q #2: Which of the following contains a human's hereditary information?

A. chromatin

B. Histones

C. ATP

D. Plasmids

Answer Explanation

Rationale

Chromatin refers to a complex of DNA and proteins in human cells. This material is packaged by histones to make up the chromosomes. The chromosomes then contain genetic information that is heritable.
Q #3: Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day?

A. Water has a high specific heat capacity

B. Water is a versatile solvent

C. Water forms covalent bonds with other water molecules

D. Water's adhesive properties prevent evaporation

Answer Explanation

Water has a high specific heat capacity, which means it can absorb and store a large amount of heat energy without significantly changing in temperature. This helps moderate the temperature fluctuations of the air near the coast, as water can store heat during the day and release it at night, or vice versa.

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The component of an atom that possesses relatively little mass, thus being negligible in calculating the atomic mass number, is the:

More Questions on TEAS 7 Science

Q #1: Which of the following distinguishes endocrine and exocrine glands from another?

Answer Explanation

Q #2: Which of the following contains a human's hereditary information?

Answer Explanation

Q #3: Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day?

Answer Explanation

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The component of an atom that possesses relatively little mass, thus being negligible in calculating the atomic mass number, is the:

More Questions on TEAS 7 Science

Q #1: Which of the following distinguishes endocrine and exocrine glands from another?

Answer Explanation

Q #2: Which of the following contains a human&#39;s hereditary information?

Answer Explanation

Q #3: Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day?

Answer Explanation

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Q #2: Which of the following contains a human's hereditary information?