A chemically-defined medium is a medium made with component whose composition is
ID: 179209 • Letter: A
Question
A chemically-defined medium is a medium made with component whose composition is not totally known, for example, it contains things like year extract. True. False. A variable plate count gives you the total number of organisms (both living and dead) within a culture medium. True. False. Humans are the intermediate host for the malaria organism because the pathogen carries out sexual reproduction in humans. True. False. Organisms in the Protozoan group Ambers are incapable causing disease. True. False. Unicellular fungi are called yeasts. True. False. While fungi can cause diseases of plants, they do not cause any human diseases. True. False. While many fungi can produce sexual spores, none can produce asexual spores. True. False. Most non-retrovial RNA viruses replace their genomes outside the oucles in the cytoplasm. True. False. Some RNA circuses make a single, very long polypeptide from the genomic RNA that is then cleaved to produce the mature viral proteins, by a virus-enclosed protease. True. False. The genomic RNA isolated from virus particles of a single-stranded positive(+) sense RNA virus likely would be infectious if injected into host cells. True. False.Explanation / Answer
Answer: I am answering for question # 144, 145, 148 & 150 as it is asked as such.
144). B. False
Free-living amoebae in the Amoebozoa group are important causes of disease in humans and animals.
145). A. True
Yeasts are unicellular members of the fungi kingdom and include those commonly found in baking and brewer's yeast, which are of the species saccharomyces cerevisiae.
148). A. True
Non-retroviral type of RNA virus genome remains outside the nucleus, in the host cell's cytoplasm, where they are replicated by a special viral enzyme, RNA dependent-RNA polymerase to produce more copeis of the RNA genome.
150). A. True
RNA of a positive-sense virus can directly cause infection though it may be less infectious than the whole virus particle. Purified RNA of a negative-sense virus is not infectious by itself as it needs to be transcribed into positive-sense RNA
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