You are giving first aid to a semiconscious person who (before your arrival) told a bystander something about taking a drug overdose. The person has dilated pupils and a dry mouth. You recall reading that many drugs "mimic" the effects of nervous system
functions, and you quickly size up which part of the nervous system is being mimicked here. The bystander is calling 911. In order to save time and best advise the emergency dispatcher about the treatment EMTs should be prepared to begin when they arrive, you tell the bystander to tell the 911 operator that the drug taken probably mimics which nervous system division?
A) sfferent B) somatic C) sympathetic D) parasympathetic
Answer: C
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Variations in the timing of master gene expression during embryonic development in vertebrates is responsible for
____.
a. mitochondrial DNA expression b. protein synthesis c. differences in adult body form d. development of vestigial structures e. brain development
Carbon dioxide and other greenhouse gases cause Earth's temperature to increase by
A) reducing photosynthetic rates. B) absorbing heat energy and holding it close to Earth. C) increasing the amount of radiation from Earth's surface. D) increasing plant respiration. E) allowing greater transmission of incoming solar radiation.
small openings where CO2 enters the leaf
What will be an ideal response?
Select the statement that correctly describes differences among these four types of algae.Chlamydomonas reinhardtii Gonium pectorale Pleodorina californica Volvox aureus
A. Chlamydomonas reinhardtil is single celled and biflagellate, while Gonium pectorale, Pleodorina californica and Volvox are multicellular with a single flagella on all cells. B. Chlamydomonas reinhardtil and Gonium pectorale cells lack flagella, while Pleodorina californica and Volvox have biflagellate somatic cells. C. Gonium pectorale is single celled, Chlamydomonas reinhardtil is composed of identical cells, and Pleodorina californica and Volvox are composed of two different cell types. D. Chlamydomonas reinhardtil and Gonium pectorale cells are biflagellate, Pleodorina californica and Volvox have no biflagellate cells. E. Chlamydomonas reinhardtil is single celled, Gonium pectorale is composed of identical cells, and Pleodorina californica and Volvox are composed of two different cell types.