The purple sulfur bacteria carry out oxygenic photosynthesis.
Answer the following statement true (T) or false (F)
False
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RNA cannot be cloned directly. ________, a viral enzyme, is used to convert single-stranded RNA
into ___________ for cloning. Fill in the blank(s) with the appropriate word(s).
Which of the following is not a characteristic of living things?
1.Reproduction 2.Development 3.Metabolism 4.Not responding to stimuli
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
Which is true?
A. Neandertals were probably a different species from other early humans. B. Neandertals and Homo erectus were the same genus. C. Australopithecus was first discovered in Central America. D. Several species of Neandertals were discovered in Europe.