If a DNA molecule was a spiral staircase, what

would the steps of the staircase be?



a. covalent bonds.
b. deoxyribose.
c. base pairs.
d. hydrogen bonds.
e. phosphate


C

Biology & Microbiology

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At present rates of clearing and degradation, most of the tropical rain forest biome will be gone by the year ____

a. 2035 b. 2050 c. 2100 d. 2150 e. 2200

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The nucleic acid of retroviral provirus is composed of RNA

Indicate whether the statement is true or false

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Which kingdom would include an organism that is multicellular, relies on other organisms for food, and reproduces by spores?

A) kingdom Animalia B) kingdom Fungi C) kingdom Plantae D) kingdom Protista

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