What are the three eukaryotic nuclear DNA replicases and their functions?
What will be an ideal response?
Ans: DNA polymerase ?, along with a primase, initiates the synthesis of new DNA strands. DNA polymerase ? continues with elongation of the leading strand, while DNA polymerase ? continues with elongation of the lagging strand (probably in conjunction with DNA polymerase ?).
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Consider the structure of a trophic pyramid when answering the following questions: Why would the world be better off if all humans were vegetarians?
A. More energy can be obtained as a primary consumer, supporting more primary consumers. B. There are more vitamins in plant tissue than in animal tissue; primary consumers would be healthier. C. Eating vegetables is healthier than eating animals.
Fertilization usually occurs in the
A) ovary. B) uterine tube. C) uterus. D) endometrium (uterine lining).
Genes isolated from mice or rats can often be used as ____________________ to identify and isolate the human
version of the same gene. Fill in the blank(s) with the appropriate word(s).
What member of the human intestinal microbiota occasionally causes life-threatening disease?
A) Escherichia coli O157:H7 B) Clostridium difficile C) Salmonella enterica D) Giardia intestinalis E) Lactobacillus