Sydenham's chorea is an unusual complication in individuals with ________ fever.
a) scarlet
b) rabbit
c) rheumatic
d) dengue
Ans: c) rheumatic
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In a population of 100 four-o'clock flowers there are 40 red-flowered plants (CRCR), 38 pink-flowered plants (CRCW), and 22 white-flowered plants (CWCW) what is the frequency of the CW allele in this population?
A. 0.48 or 48% B. 0.6 or 60% C. 0.4 or 40% D. 0.09 or 9% E. 0.52 or 52%
Which one of the following terms applies to the phylum Platyhelminthes?
A. radial cleavage B. protostome C. diploblastic D. acoelomate E. radial symmetry
About 200 years ago, Jan Baptista van Helmont wanted to know where growing plants get the materials necessary for increases in size. He planted a tree seedling weighing 5 pounds in a barrel filled with 200 pounds of soil and then watered the tree regularly. After five years, the tree weighed 169 pounds, 3 ounces, and the soil weighed 199 pounds, 14 ounces. Because the tree had gained so much
weight and the soil had lost so little, he concluded that the tree had gained all of its additional weight by absorbing the water he had added to the barrel, but of course he was incorrect. What really happened? What will be an ideal response?
A newly discovered prokaryote produces a compound with promising antimicrobial effects. Devise a set of tests to determine whether the antimicrobial is broad or narrow spectrum and bactericidal or bacteriostatic
What will be an ideal response?