Bacteria reproduce by an asexual process in which one parent cell gives rise to identical daughter cells.
a. true
b. false
Ans: a. true
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Experimental studies have produced ribozymes that ____
a. reverse transcribe DNA from an RNA template b. polymerize new RNA from an RNA template c. cleave cellular membranes d. produce completely new RNA strands e. polymerize new proteins from an RNA template
Large molecules that are formed by combining smaller molecules and are biologically significant are referred to as what?
a. DNA b. macromolecules c. monomers d. polymers
Which of the features listed below is not found in all cells?
A) Cytoplasmic membrane B) Ribosomes C) DNA D) Nucleus
The cells of an aging animal function less efficiently because
A) organelles and cellular components decline. B) protein synthesis ceases. C) damaged DNA cannot be repaired. D) cell metabolism is slower. E) cells can no longer mitotically divide.