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IB 103 Exam 1 with complete solutions 2024_2025.

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What, at a molecular level, is a mutation? A change in the base sequence of DNA What is the "Central Dogma of Molecular Biology?" DNA>RNA>Protein Where is DNA located in cells?/Why is it found in those places? Nucleus, chloroplast, mitochondria/Endosymbiosis What is the importance of the rules and forces that hold DNA together? Enables replication & transcription; unnecessary for translation A cell treated with ricin dies because it runs out of New proteins Ribosomes have evolved to bind ____ simultaneously Two tRNAs and one mRNA If RNA polymerase used the following molecule as a template, what would be the product? GCCGAT CGGCTA GCCGAU Why is the genetic code said to be "degenerate?" Multiple "words" have the identical "meaning" Whether a gene is transcribed or not is largely determined by whether transcription factors are bound to the Promoter Which DNA molecule would encode the same polypeptide as that encoded by the following messenger RNA? AUGUGCGGU ATGTGTGGG TACACACCC

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IB 103
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Uploaded on
September 13, 2024
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2024/2025
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IB 103 Exam 1 with complete solutions
2024/2025




What, at a molecular level, is a mutation? - ANSWER- A change in the base
sequence of DNA

What is the "Central Dogma of Molecular Biology?" - ANSWER-
DNA>RNA>Protein

Where is DNA located in cells?/Why is it found in those places? - ANSWER-
Nucleus, chloroplast, mitochondria/Endosymbiosis

What is the importance of the rules and forces that hold DNA together? -
ANSWER- Enables replication & transcription; unnecessary for translation

A cell treated with ricin dies because it runs out of - ANSWER- New proteins

Ribosomes have evolved to bind ____ simultaneously - ANSWER- Two tRNAs and
one mRNA

If RNA polymerase used the following molecule as a template, what would be the
product?
GCCGAT
CGGCTA - ANSWER- GCCGAU

Why is the genetic code said to be "degenerate?" - ANSWER- Multiple "words"
have the identical "meaning"

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