What type of experimental technique did Huberman and Riggs use to produce the first evidence of bidirectional replication in bacteria?
What will be an ideal response?
pulse-chase labeling
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Shells of forams consist of organic matter reinforced by
a. silica. b. cellulose. c. calcium carbonate. d. copper sulfate. e. hydrogen sulfide.
During elongation, ribosomes catalyze
formation of ____ between the amino acid and the growing polypeptide.
a. a hydrogen bond b. a peptide bond c. a polar covalent bond d. a non-polar covalent bond e. a sulfur bond
The letter "C" from above represents which of
the following? a. the excretory pore b. loops where blood vessels take up solutes from the blood c. sexual reproductive organ of the planarian d. cilia which flick to draw fluid into the planarian e. none of these
Plants share a most recent common ancestor with what group of protists?
A. green algae B. brown algae C. red algae D. dinoflagellates E. cyanobacteria