Which of the following is the best evidence for a three-domain system?
A) Nucleotide sequences in ribosomal RNA vary between all three domains.
B) There are three distinctly different sets of metabolic reactions.
C) There are three distinctly different Gram reactions.
D) Some bacteria live in extreme environments.
E) There are three distinctly different types of nuclei.
A
You might also like to view...
Thermoplasma contains an extremely small genome complexed with a highly basic DNA-binding protein
Indicate whether the statement is true or false.
The ____________ is a region around a star where liquid water can exist
Fill in the blank(s) with correct word
After responding to complement, the main function of dendritic cells is to present antigen to which cells in an adaptive immune response?
A. Mast cells B. Basophil C. B cells D. NK cells E. T cells
The enzyme (amylase/hyaluronidase/lipase) can be used in injected medications to enhance their rate of absorbance.
Fill in the blank(s) with the appropriate word(s).