RNA polymerase II of eukaryotes is responsible for transcribing ________.

A. mRNA
B. tRNA
C. rRNA
D. All of the choices are correct.


Answer: A

Biology & Microbiology

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Male deer have large antlers that are used to challenge each other in fights for territory and females. The females of this group actively choose the strongest males. Which type of sexual selection is occurring with the deer population?

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A(n) ____ is a type of chemical bond in which a strong mutual attraction forms between ions of opposite charge

a. hydrogen bond b. nonpolar bond c. polar bond d. covalent bond e. ionic bond

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Which cell organelle is responsible for the breakdown of fatty acids?

a. Golgi body b. ribosome c. mitochondrion d. lysosome e. peroxisome

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Sequencing of HIV-1 revealed that it is most closely

related to which of the following? a. simian immunodeficiency virus b. feline leukemia c. bovine immunodeficiency virus d. hepatitis B e. all of these

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