Which is a feature of fungi? A. photosynthesis at very low light intensities B.

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Which is a feature of fungi? A. photosynthesis at very low light intensities B. feeding via endocytosis of food particles C. cell walls containing chitin D. cell motility through the action of pseudopodia E. autotrophic metabolism How did cyanobacteria change the atmosphere on early Earth? A. They led to increased nitrogen levels. B. They led to increases in reduced, soluble forms of iron. C. They led to increased atmospheric O2 levels. D. They led to increased water levels in the oceans. In some areas where malaria infections are endemic, a characteristic mutation may be found in the local human gene pool in which of the following human genes? A. RNA polymerase. B. hemoglobin. C. human serum albumin. D. the plasmodium receptor. E. DNA polymerase The factors that are required for the pathogenicity of E. coli O157:H7 are encoded in A. the core genome B. the pan genome C. a set of operational genes D. a set of informational genes E. B and C Saccharomyces cerevisiae (Bakers Yeast) has served as a model eukaryotic organism for studies on all of the following subjects EXCEPT: A. control of the eukaryotic cell cycle B. trafficking and activity of human prion protein C. control of growth and development of fungal hyphae D. activity and interactions of human proto-oncogenes E. vesicular trafficking and fusion The alpha proteobacteria contain a number of organisms that are either endosymbionts or intracellular parasites. Which of the following is NOT phylogenetically grouped this clade? A. Rhizobium. B. The SAR-11 cluster C. Wolbachia. D. Rickettsia. E. Chlamydia.

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Question number 1: The correct option is C (cell walls containing chitin)

Explanation : Chitin is a nitrogenous containing homopolysaccaride found in fungal cell walls and also found in the exoskeleton of arthropods. Chitin is the primary components of the fungal cell walls includes chitin which is a polymer of N-acetylglucoseamine.

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