Construct a table with the five kingdoms listed. Include several diagnostic features of each kingdom and an important
ecological role of organisms found in each kingdom. What will be an ideal response?
Concepts to Consider: kingdom Plantae--eukaryotic, mostly photosynthetic, complex
reproductive structures, cell walls of cellulose, primary producers and source of atmospheric
oxygen; kingdom Animalia--eukaryotic, heterotrophic, mostly multicellular, usually with
nervous tissues, motile, three different types of consumers?herbivore, carnivore, and detritus
feeders; kingdom Fungi--eukaryotic, heterotrophic, mostly multicellular, bodies formed by hyphae, cell walls of chitin, decomposers, some members parasitic and others are used for
food; kingdom Bacteria--prokaryotic, varied metabolism, may be pathogenic, cell wall of
peptidoglycan in most, most decomposers, some members are parasites, some are
photosynthetic, and some are chemosynthetic autotrophs; kingdom Archaea--the bacteria
adapted to live in unusual habitats, including the methanogens, halophiles, and extreme
thermophiles, cell walls without peptidoglycan, live in extreme environments such as salty
environments, extreme temperatures, and even acidic environments.
You may include any Supergroup that describes Protists. which are eukaryotic,
photosynthetic or heterotrophic, many are unicellular, many are motile, members are part of
zooplankton.
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Which of the following statements is true about vitamins?
A. Vitamins are organic nutrients that break down to form energy for the cell. B. Vitamins are enzymes that catalyze chemical reactions in cells. C. Vitamins are molecules that assist enzymes in chemical reactions or assist in energy-related pathways. D. Vitamins are nutrients that are directly metabolized through cellular respiration pathways, providing energy for the cell. E. Vitamins are molecules that lower the activation energy of chemical reactions, allowing them to proceed rapidly.
Why can cholesterol act as a “fluidity buffer” in cell membranes?
a. It is slightly amphipathic because of the presence of one hydroxyl group. b. It is slightly hydrophobic because of the presence of one hydroxyl group. c. It is slightly hydrophobic because of the presence of one carboxyl group. d. It is slightly amphipathic because of the presence of one carboxyl group. e. It is slightly hydrophilic because of the presence of one hydrocarbon group.
Which of the following effects could result from activation of the sympathetic nervous system?
A) decreased heart rate B) stimulated digestive organs C) secretion of epinephrine D) narrowing of the bronchi
If red blood cells are taken from the body and placed in a hypertonic solution, what happens to the cells?
A) The cells remain unchanged due to equal solute concentrations inside and outside the cells. B) The cells remain unchanged due to equal water concentrations inside and outside the cells. C) They become white blood cells. D) The cells swell and burst because water moves into them. E) The cells shrivel up because water leaves them.