Another name for birth. _____

During the luteal phase, a(n) __________ forms from cells that surrounded the egg. Fill in the blank(s) with the appropriate word(s)

An inherited human disorder, familial dysautonomia, results from a nucleotide mutation in the gene IKAP that is expressed in the nervous system

The decreased IKAP protein leads to abnormal development, and the resulting disease is usually fatal by age 30. The nucleotide change alters splicing. If this change affects only the nervous system and not the immune system, in which the gene is also expressed, what feature must be found in this gene?

Nerve-like muscle cells that function as the heart's pacemaker are found in the:

A) sinoatrial node. B) coronary arteries. C) left ventricle. D) right ventricle. E) atrioventricular valves.

The Gaia Theory says that

A. the complementary actions of respiration and photosynthesis have maintained a relatively stable atmospheric pool of carbon dioxide and oxygen. B. all living things must obtain nutrients and energy from their environment. C. all elements have their origin in a nonliving, long-term reservoir. D. the biosphere contains a diversity of habitats and niches favorable to life because living things have made it that way. E. ecosystems are open with regard to energy because the sun is constantly renewing them with a renewable source.