Oligonucleotide primers require only a portion of the sequence to hybridize to the template DNA; the non-hybridized 5' end of the primer can be engineered to contain a recognition sequence for a restriction endonuclease that will be incorporated into the double-stranded daughter DNA after the second cycle.
Answer the following statement true (T) or false (F)
True
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In a pond, tadpoles eat algae and fish eat the tadpoles. Above the pond, grasshoppers eat grass and, at night, are preyed upon by bats. Other bats eat the fish that eat the tadpoles. In this community, the tadpoles are:
A. primary producers. B. primary consumers. C. secondary consumers. D. tertiary consumers. E. detritivores.
Ricin inactivates _____
a. proteins b. ribosomes c. DNA d. transcription factors e. mRNA
The usual, naturally-occurring mechanism that prevents development of cancer is the action of ____
a. cytotoxic T cells b. oncogenes c. radiation d. chemotherapy e. carcinogens
Which of the following are the most abundant of the chlorophylls?
a. chlorophyll a and b b. chlorophyll a and c c. chlorophyll b and c d. chlorophyll a, b, and c