Consider organisms that are eukaryotic, are found in both unicellular and multicellular forms, may resemble plants but are not photosynthetic, have chitin in their cell walls, and absorb organic nutrients from decomposing material in the environment. These organisms would be classified as which of the following types of organisms?
a. archaea
b. bacteria
c. protozoa
d. fungi
Answer: d. fungi
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A photographic representation of the chromosomes of an organism is called a(n) _______
A. allele variation B. chromosomal spreading C. chromosome picture D. karyotype
Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter. Propose a chemical basis for this change from a liquid to a solid.
A. Trans-fatty acids are changed from unsaturated to saturated, allowing them to solidify. B. Hydrogenation of fats changes them from saturated to unsaturated, which are more solid. C. Hydrogenation of fats changes them from unsaturated to saturated, which are more solid. D. Trans fatty acids are changed from saturated to unsaturated, allowing them to solidify.
In the catabolism of arginine to generate ATP in Mollicutes, the first reaction is catalyzed by ________.
A. ATP synthetase B. Pentose phosphate pathways C. Embden-Meyerhof pathways D. arginine deaminase
In what way do segregational petite mutations differ from neutral petites?
A) Neutral petites are dominant and segregational petites are recessive mitochondrial genes. B) Segregational petites follow Mendelian inheritance as a result of the influence of nuclear genes; neutral petites, when crossed to wild type, produce only wild-type, normal-sized colonies. C) When a neutral petite is crossed to a segregational petite, all offspring are neutral petites. D) When a segregational petite is crossed to a wild-type cell, all offspring are petite. However, when a neutral petite is crossed to a wild-type cell, all offspring are wild type. E) Neutral petites follow Mendelian inheritance as a result of the influence of nuclear genes; segregational petites, when crossed to wild type, produce only wild-type, normal-sized colonies.