Prenatal diagnosis techniques such as amniocentesis and chorionic villus sampling remove cells that
were produced by an embryo. These cells are then used
a. to treat diseases.
b. for implantation to produce pregnancy.
c. to develop embryonic stem cells.
d. to test for the presence of mutant alleles or chromosomal alterations.
e. for cloning.
D
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The World Trade Organization (WTO), established in 1995, has which of the following as an objective?
a. support free trade b. eliminate trade subsidies c. establish binding rules to ensure fairness in trade d. All of these.
Why is back pain so common in humans? What will be an ideal response?
When light hits a pigment, what happens to the energy from a photon?
a. It is reflected from an electron of the pigment molecule. b. It is transferred to an electron of the pigment molecule. c. It is transmitted through an electron of the pigment molecule. d. It is transmitted and reflected from an electron of the pigment molecule.
Which of the following is an example of deductive reasoning?
A) Living objects are composed of cells. B) Atoms make up molecules, which make up cells, which make up tissues. C) If an object exhibits all the characteristics of life, it must be living. D) All objects on Earth will fall down when dropped, and none will "fall up."