Use the Following to Answer the Questions Below

question 70

Multiple Choice

Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: (1) A molecule is a group of two or more atoms that functions as a unit because the atoms are bound together by chemical forces.
(2) The crushing of ice to make ice chips is a physical procedure that involves a chemical change.
(3) Most naturally occurring samples of matter are mixtures rather than pure substances.

• A) All three statements are true.
• B) Two of the three statements are true.
• C) Only one of the statements is true.
• D) None of the statements is true.

---

Definitions:

Chorionic Villus Sampling

A prenatal test in which a sample of chorionic villi is taken from the placenta for genetic testing.

Gene Therapy

A medical technique that involves modifying or repairing defective genes to treat or prevent disease.

Klinefelter Syndrome

Inherited condition in which the affected individual is a sterile male with an XXY karyotype.

Barr Body

An inactivated X chromosome typically found in the nuclei of female mammalian cells, visible as a dense spot.