Which statement does not apply to pneumocystis pneumonia and its causative organism, Pneumocystis jirovecii?
A) HIV-AIDS patient are high-risk for this infection.
B) Like all other pathogenic fungi, the reservoir is soil.
C) The organism has some characteristics found in protozoans rather than fungi.
D) The fungus does not make spores.
E) Serological evidence suggests that most people are exposed to the organism in early childhood.
Answer: B
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Megaspores produce
a. female gametophytes. b. pollen grains. c. sporophytes. d. male gametophytes. e. diploid tissue
Bioinformatics provides database information to align proteins from novel sequences with known proteins. If a new amino acid sequence does not match an existing sequence ________.
A. it is called an paralogue; the DNA that codes the ORF does not match any other organism in the database and the function is not known B. it is called an orthologue; the DNA that codes the ORF does not match any other organism in the database and the function is not known C. it is either a conserved hypothetical protein, i.e., the DNA matches genes in the database but they have no known function, or it is a protein of unknown function; the genes are unique to that organism D. it is either a protein of unknown function, i.e., the DNA matches genes in the database but they have no known function, or it is a conserved hypothetical protein; the genes are unique to that organism
The "fundamental niche" of an organism is defined as the
a) climatic conditions required for the organism to survive and reproduce b) range of environmental conditions under which the organism can survive and reproduce c) area that an organism occupies immediately after birth d) physical space that the organism occupies e) area in which the organism reproduces
What makes neurons different from other cells?