Some chytrids have true mycelia, but others may consist of a single cell or a small multinucleate mass.
Answer the following statement true (T) or false (F)
True
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Which of the following statements about basidiomycetes and ascomycetes is incorrect?
A. Basidiomycetes have a short heterokaryotic stage, whereas ascomycetes have a long heterokaryotic stage. B. Basidiomycetes produce spores in clubshaped cells, whereas ascomycetes produce spores in elongated, saclike cells. C. Basidiomycetes plug their septal pores following damage in a different way from ascomycetes. D. Basidiomycetes produce four spores from each basidium, whereas ascomycetes produce eight spores from each ascus. E. Basidiomycete fruiting bodies are composed entirely of dikaryotic hyphae, whereas ascomycete fruiting bodies are composed of a combination of haploid and dikaryotic hyphae.
Which layer of the digestive tract covers and protects the gut?
A. lumen B. mucosa C. submucosa D. longitudinal muscles E. serosa
In a signal transduction pathway involving cAMP as a second messenger, after a G protein is
activated, the activated G protein then activates:a. phospholipase C. b. adenylyl cyclase. c. calmodulin. d. protein kinase. e. diacylglycerol.
The scientific method has varying levels of certainty. Which of the following terms has the lowest level of certainty?
a. conclusion b. theory c. observation d. hypothesis