The Guthrie test screens for excessive phenylalanine in the blood of infants
Indicate whether the statement is true or false
TRUE
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Under the ___________ , species are identified based on their unique habitat requirements.
A. phylogenetic species concept B. biological species concept C. evolutionary species concept D. ecological species concept E. general lineage concept
Which structure(s) is(are) NOT included in the lymphatic system?
a. lymph nodes b. the spleen c. the thymus d. tonsils e. the thyroid
Baker's yeast is a single-celled ascomycete that is used in bread making. Why does yeast make bread dough rise?
A. Yeast cells take in carbon dioxide, causing them to swell and the dough to expand. B. Exponential growth of the yeast cells physically expands the dough. C. The fungal cells burst and release spores, causing the dough to expand. D. Yeast cells produce carbon dioxide during fermentation, causing the dough to expand.
Plant cells often have a large membrane-bound sac that is used for storing water and other substances. This organelle is called:
A. centriole B. chloroplast C. nucleus D. central vacuole E. Golgi body