After a plasmid has been inserted into a section of DNA and hydrogen bonds have formed between complementary bases, what enzyme ensures the DNA fragments are permanently bonded together with covalent bonds?
a. plasmids
b. helicase
c. ligase
d. restriction enzymes
c. ligase
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The skeletons of radiolarians contribute to biogenous sediment that is called:
a. diatomaceous ooze. b. calcareous ooze. c. manganese ooze. d. siliceous ooze. e. hydrogenous ooze.
What is the most compelling reason why DNA, rather than RNA, evolved to be the storage repository for genetic information in cellular life forms?
A. DNA molecules are more chemically stable than RNA molecules. B. DNA has deoxyribose rather than ribose. C. DNA is double-stranded rather than single-stranded.
Endophytes grow within plants
What will be an ideal response?
According to data from the ENCODE project, approximately 80% of the human genome is associated with biological
function. Indicate whether the statement is true or false.