what antimicrobial physical agent is used to sterilize surgical tools in hospitals?
What will be an ideal response?
autoclave
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The chromosomes of most bacteria are comprised of
A. double-stranded circular molecules. B. double-stranded linear molecules. C. single-stranded linear molecules. D. single-stranded circular molecules.
Which one of the following pairs is mismatched?
A. lysosome-protein synthesis B. cytoskeleton-microfilaments C. nucleus-DNA replication D. cell membrane-lipid bilayer E. Golgi apparatus-modification, processing, and sorting of macromolecules
The proportion of shared genes between a grandparent and grandchild is ________ percent.
A) 10 B) 25 C) 50 D) 100
Scientists have not yet determined conclusively whether DNA or RNA was the first nucleic acid that evolved on early Earth. Why does this topic interest scientists?
A) It interests scientists because RNA and DNA are the first organic molecules that existed; understanding them is the key to understanding how organic molecules first formed. B) Early cells could not store or pass information to future generations without nucleic acids. C) DNA and RNA are the inorganic precursors to all organic molecules formed on early Earth. D) Miller and Urey found evidence of DNA and RNA in the single amino acids formed in their experiment.