Select the correct descending taxonomic hierarchy (left to right).

A. Genus, species, family
B. Family, order, class
C. Kingdom, domain, phylum
D. Family, genus, species
E. Class, phylum, order


Answer: D

Biology & Microbiology

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Hair cells are found in structures represented by which numbers?

A) 1 and 2 B) 3 and 4 C) 5 and 7 D) 6 and 8 E) 9 and 10

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A primary advantage of using integrated nutrient management compared to inorganic chemical fertilizers is that

A. chemical fertilizers are not soluble in water. B. chemical fertilizers break down very slowly. C. less organic fertilizer is needed than chemical fertilizers. D. only organic fertilizers contain micronutrients. E. organic fertilizers release nutrients more slowly.

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A sample placed into fresh medium is initially in the (lag/log/stationary) phase of microbial growth in most instances

What will be an ideal response?

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Researchers studying olfactory and taste receptors have stumbled upon an unusual phenomenon. These receptor proteins are sometimes expressed in other animal tissues in addition to the nose or tongue. For example, the sweet taste receptor T1R2 is expressed in the pancreas. Suggest the best possible explanation for these findings.

A. Techniques used to visualize protein expression are imperfect and may lead to false positive results. B. Control of protein expression is imperfect. As long as a receptor doesn't interfere with organ function, expression will not be selected against. C. Chemoreceptors bind molecules that help the body sense and respond to internal phenomena, such as sugar levels in the blood. D. Damaged receptors are recycled by the body and end up in waste-disposal organs.

Biology & Microbiology