Which of the following supports the idea that all organisms share a common ancestry?
A) All cells have a similar biochemistry, including amino acids, nucleic acids, and ATP.
B) All cells use the same collection of lipids.
C) All cells use amino acids as a carrier of genetic information.
D) All cells use DNA as a cellular energy carrier.
E) All cells use ATP as the template for protein synthesis.
A
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Cells that are making large quantities of proteins will have numerous
a. centrioles. b. chromosomes. c. cilia. d. plastids. e. ribosomes.
Medical asepsis eliminates all microbes from an object or area
Indicate whether the statement is true or false
With almost no exceptions, the nitrogen fixers are
A. green plants. B. insects. C. beans. D. mammals. E. prokaryotes.
Molecules
A. are derived from the ionic bonding of two or more atoms. B. are not important in biological processes. C. have the same physical properties as the atoms from which they were derived. D. cannot have a charge. E. can form from the covalent bonding of two or more atoms.