Fluid in the lymphatic system, as well as interstitial fluid, is
A) derived from blood plasma.
B) pumped from the left ventricle into lymphatic vessels and then back into the right atrium.
C) composed mostly of formed elements from blood.
D) the liquid portion of fluid escaping from the digestive system.
E) produced by the endothelium to lubricate the interior of vascular tissue.
A
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The ovary in an adult contains
A) seminal vesicles. B) many oocytes in various stages of maturity. C) many sperm in various stages of maturity. D) a number of mature oocytes equal to 100 minus the woman's age.
Two pure-breeding phlox plants were crossed, one with dark-blue flowers and the other with pink flowers. The F1 generation all had dark-blue flowers. When the F1 were crossed with each other, the F2 generation consisted of 176 plants: 101 with dark-blue flowers, 33 with light-blue flowers, 30 with red flowers, and 10 with pink flowers. What progeny types would result from crossing a homozygous plant with light-blue flowers to a homozygous plant with red flowers?
A) all would be dark blue B) all would be red C) 1 light blue : 1 red D) 9 dark blue : 3 light blue : 3 red : 1 pink
All organisms fit into one of the two following
categories.
a. consumers and decomposers b. producers and decomposers c. producers and consumers d. scavengers and detritivores e. consumers and scavengers
Which group of microbes contains organisms necessary for production of wine and bread?
A. Bacteria B. Archaea C. Algae D. Fungi