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Micro Hybird Bates
Chapter 2 test Review-Part 3
| Question | Answer |
|---|---|
| Which of the following nucleotide bases is found only in RNA, not in DNA? | Uracil |
| Operons are found in which of the following organisms DNA? | prokaryotes |
| In a repressible operon, what causes the operon to shut OFF? | Too much end product |
| What is the function of polymerase chain reaction (PCR) in genetic engineering? | make millions of copies of a specific segment of DNA |
| What are the segments on the lagging strand during DNA replication called? | Okazoki fragments |
| How do low temperatures affect microbes? | Slows them down |
| A gene is best defined as | A sequence of nucleotides in RNA that codes for a functional product. |
| Salts and sugars work to preserve foods by creating a; | hypertonic environment |
| Conjugation differs from reproduction because conjugation; | Transfers DNA horizontally, to cells in the same generation |
| Transcription begins when RNA polymerase binds to the DNA at the__. | promoter |
| An organism that uses oxygen but can grow without oxygen is called a(n) | Facultative aerobe |