The Human Genome Project, which got under way in 1990, is an international effort to ________
A) clone deleterious genes from humans and study their mode of action
B) collect plant seeds in order to reduce the impact of human activity on plant extinction
C) collect samples of cells from all parts of the world in order to preserve human genetic diversity
D) clone beneficial genes from humans for eventual use in gene therapy
E) determine the base sequence of the human genome and to identify all the genes within
Answer: E
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The main DISADVANTAGE of excessive gluconeogenesis during prolonged postabsorptive periods is that
A. continued protein breakdown can impair enzymatic activity and plasma membrane functions. B. carbohydrate buildup in the liver impairs its function. C. the brain is exposed to levels of glucose that are too high. D. tissues other than the brain increase glucose utilization. E. glucose absorption from the gut is impaired.
Under times of great stress or shock, which of the following neurotransmitters interferes with the perception of pain?
A) endocannabinoids B) GABA C) catecholamines D) enkaphalins E) calcium ions
Negative feedback loops to the hypothalamus and the pituitary operate to regulate the levels of ____, the most
important regulator of thyroid hormone secretion.
a. TRH b. thyroid hormone c. TSH d. ADH e. calcitonin
Nitrogenous waste is excreted from Malpighian tubules mainly in the form of ____
a. nitrate b. ammonia c. uric acid d. amino acids e. urea