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