Prenatal detection of human diseases has been greatly enhanced by two procedures. Name and briefly describe each

What will be an ideal response?


Amniocentesis is the withdrawal of amniotic fluid by a needle inserted through the mother's abdomen; chorionic villus sampling is the use of a catheter to sample the fetal chorion.

Biology & Microbiology

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Which brain structure relays incoming sensory information?

a. thalamus b. hypothalamus c. cerebrum d. brain stem e. cerebellum

Biology & Microbiology

What percentage of the world's tropical forests has been cut down for cropland, fuel wood, grazing land, and timber?

a. 20 percent b. 30 percent c. 40 percent d. 50 percent e. 60 percent

Biology & Microbiology

The number of embryonic leaves, or ________, differentiates the two main classes of crop plants

A) cotyledons B) anthers C) carpels D) rhizomes

Biology & Microbiology

Which is not a characteristic of Nocardia?

A. it can be transmitted by respiratory droplets B. it can cause pneumonia with symptoms similar to tuberculosis C. they are filamentous rods that grow in clusters called sulfur granules in infected tissue D. it lives in the soil E. it causes most cases in the immunocompromised

Biology & Microbiology