In ABO blood typing, ____occurs when the patient's blood sample is mixed with antibodies that recognize the H antigen on the red blood cells.
Fill in the blank(s) with the appropriate word(s).
agglutination
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The lethality of most monosomies and trisomies in humans shows:
A. the importance of gene dosage. B. the deleterious effects of variable number tandem repeat sequences. C. the advantage of sexual reproduction. D. the rarity of gene copy number variation in the genome.
Which of the following statements is false?
A. Peptide hormones act on time scales of days to months. B. Amine hormones are more abundant than steroid hormones. C. Peptide hormones can evolve through changes in their amino acid sequence. D. Peptide hormones and amine hormones are both derived from amino acids. E. Steroid hormones are hydrophobic, whereas amine hormones are hydrophilic.
A 26-year old woman, eight months pregnant, visits her obstetrician complaining of fever, myalagia and back ache of recent onset. Three weeks earlier, the patient had been a weekend guest at a rural farm-house, where all the food was reported to be "unprocessed" and "natural." A culture of the patient's blood shows listeria. What is the most likely source of the woman's infection?
A. well-done roast beef B. fresh, raw cow's milk C. home-baked bread D. homemade apply sauce E. baked apple pie
Please match the following nutritional types with the statements that most accurately describe them, to test your understanding of the main categories of nutritional types among organisms.
Heterotroph A) An organism that uses inorganic carbon dioxide as its carbon source B) An organism that must obtain its carbon in an organic form C) An organism that gains energy from chemical compounds D) An organism that acquires energy from light