Which agent is capable of being reduced during both glycolysis and the Krebs cycle?
a. NAD+
b. FAD+
c. ADP
d. NADH
e. NADP+
a
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Mendel studies seven different traits in the garden pea. What genetic term is used to describe an observable trait, such as those studied by Mendel?
A) genotype B) appearance C) phenotype D) haplotype E) category
Why do the Galápagos Islands and the Hawaiian Islands have so many endemic species of flies and birds? Check all that apply.A) There are numerous islands in each archipelago.B) There is adequate distance between islands to allow divergence.C) The founder effect was common when the islands were colonized.D) Each bird or fly species has many common ancestors.
What will be an ideal response?
In contrast to human X and Y chromosomes, autosomes
A. are nonhomologous, self-expressing chromosomes. B. include the X and Y sex-associated chromosomes in humans. C. All of the answer choices are correct. D. are chromosomes that do not usually mutate during meiosis. E. are homologous chromosomes found in both sexes.
Energy captured by producers usually passes through no more than four or five trophic levels. Even in ecosystems with many species, the number of participants in each food chain is limited. The inefficiency of energy transfers constrains the length of food chains. What factors limit the efficiency of energy transfers?
What will be an ideal response?