The submucosa is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Answer: b
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Which of the following best describes the sexual life cycle of bread mold?
A. (1) Multinucleate gametangi are produced and compatible strains undergo plasmogeny, and form (2) a heterokaryotic zygosporangium. (3) Karyogamy of the haploid nuclei takes place to form many diploid nuclei and the zygosporangium develops into a thick-walled zygospore. (4) Meiosis occurs and produces many haploid spores, that (5) are dispersed in air and germinate when finding a suitable environment. B. (1) Multinucleate gametangi are produced and compatible strains undergo karyogamy and plasmogamy, and form (2) a heterokaryotic zygosporangium. (3) Meiosis of the diploid nuclei takes place to form many haploid nuclei and the zygosporangium develops into a thick-walled zygospore. (4) Fusion of haploid nuclei occurs and produces spores, that (5) are dispersed in air and germinate when finding a suitable environment. C. (1) Uninucleate gametangi are produced and compatible strains undergo plasmogeny and form (2) a dikaryotic zygosporangium. (3) Karyogamy forms a diploid nucleus and the zygosporangium develops into a thick-walled zygospore. (4) Meiosis of diploic nuclei occurs and produces four haploid spores, that (5) are dispersed in air and germinate when finding a suitable environment. D. (1) Multinucleate zygosporangia develop thick walls and undergo plasmogamy with compatible strains (2) to form a heterokaryotic gametangium. (3) Karyogamy of the haploid nuclei takes place to form many diploid nuclei and they develop into thick-walled spores. (4) These undergo plasmogamy and produce diploid spores, that (5) are dispersed in air and germinate when finding a suitable environment. E. (1) Multinucleate gametangi with diploid nuclei are produced and compatible strains undergo meiosis (2) to produce a heterokaryotic zygosporangium with haploid nuclei. (3) Karyogamy of these nuclei takes place to form diploid nuclei that have a dark, thick wall. (4) These develop into spores, that (5) are dispersed in air and germinate when finding a suitable environment.
Biologists generally classify animal behaviors by
A. both the way the organism acquired the behavior and how changeable the behavior is in the organism. B. the way the organism acquired the behavior. C. the number or proportion of the species that displays the behavior. D. how specific or general the behavior allows the organism to interact within its environment. E. how changeable the behavior is in the organism.
What are the predicted phenotypes of the female children from the union of a woman who is
heterozygous for hemophilia and a man who has normal blood clotting characteristics? (Use the Punnett square to verify your answer.) a. all carriers b. 3 homozygous normal : 1 carrier c. 1 homozygous normal : 1 carrier d. 1 hemophilia: 2 homozygous; normal : 1 carrier e. all hemophiliacs
What is the correct sequence of structures through which the filtrate would pass?
1) Bowman's capsule 2) collecting duct 3) distal convoluted tubule 4) proximal convoluted tubule 5) ascending loop of Henle 6) descending loop of Henle a. 1 ? 3 ? 4 ? 5 ? 6 ? 2 b. 1 ? 4 ? 5 ? 6 ? 3 ? 2 c. 1 ? 6 ? 5 ? 4 ? 3 ? 2 d. 1 ? 3 ? 4 ? 2 ? 6 ? 5 e. 1 ? 4 ? 6 ? 5 ? 3 ? 2