Which of the following is an alien species that has invaded the United States?

A. bass
B. wolves
C. kudzu
D. buffalo
E. oak trees


Answer: C

Biology & Microbiology

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One hypothesis on the origin of DNA points to RNA viruses evolving a modified nucleotide that is insensitive to ribonucleases

Indicate whether the statement is true or false.

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On which portion of the hemoglobin molecule does oxygen bind?

a. protein chain b. cholesterol side chains c. iron in the cytoplasm d. heme group e. nuclear side chains

Biology & Microbiology

You wish to confirm that gene X is associated with the F plasmid of your bacterial strain. To accomplish this using bacterial conjugation, you should conjugate your strain with a compatible bacterial strain that is

A) an Hfr strain. B) another F+ strain. C) an F' strain. D) an F? strain. E) the same F+ strain.

Biology & Microbiology

Which type of RNA is found in eukaryotes and has an instrumental role in RNA processing?

A) rRNA B) tRNA C) snRNA D) mRNA E) All of these

Biology & Microbiology