What are purines
What will be an ideal response?
Answer: Purines - a family of nitrogenous bases that describe bases that are larger than pyrimidines, with a six-membered ring fused to a five-membered ring. Examples are: Adenine
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Which of the following atoms would most likely be involved in an ionic bond?
a. hydrogen b. oxygen c. sodium d. hydrogen and oxygen. e. hydrogen and sodium.
A dish of cells is treated with centrinone, a centriole inhibitor. These cells would no longer be able to ________.
A. make ATP B. synthesize proteins C. divide D. conduct photosynthesis E. produce lysosomes
Actin filaments are anchored at junctions called
a. adherens junctions. b. tight junctions. c. desmosomes. d. gap junctions. e. hemidesmosomes.
What is a disadvantage of using fossils to reconstruct phylogenetic history?
A. Fossils are a physical record of organismal structure. B. Fossils yield information about the timing and order of events in the past. C. Fossils reveal relatedness. D. The probability of fossilization varies among species.