BIOLOGY DUAL ENROLLMENT VERSION
12th Edition
ISBN: 9780136681311
Author: Urry
Publisher: PEARSON
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Chapter 17.3, Problem 1CC
There are about 20,000 human protein-coding genes. How can human cells make 75,000-100,000 different proteins?
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There are about 20,000 human protein-coding genes. Howcan human cells make 75,000–100,000 different proteins?
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Beadle and Tatum's experiments led to the "one gene - one enzyme (protein)" hypothesis. In subsequent years, many exceptions to this hypothesis were noted. A molecule of hemoglobin fails to support this hypothesis for which of the following reasons?
n eukaryotes, one gene can code form multiple isoforms of a polypeptide.
The functional hemoglobin protein is made from multiple polypeptides.
Not all enzymes are proteins.
Not all genes encode proteins.
Chapter 17 Solutions
BIOLOGY DUAL ENROLLMENT VERSION
Ch. 17.1 - Prob. 1CCCh. 17.1 - What polypeptide product would you expect from a...Ch. 17.1 - Prob. 3CCCh. 17.2 - MAKE CONNECTIONS In a research artide about...Ch. 17.2 - What enables RNA polymerase to start transcribing...Ch. 17.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 17.3 - There are about 20,000 human protein-coding genes....Ch. 17.3 - How is RNA splicing similar to how you would watch...Ch. 17.3 - Prob. 3CCCh. 17.4 - What two processes ensure that the correct amino...
Ch. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 17.4 - WH AT IF? In eukaryotic cells, mRNAs have been...Ch. 17.5 - What happens when one nucleotide pair is lost from...Ch. 17.5 - MAKE CONNECTIONS Individuals heterozygous for the...Ch. 17.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 17.5 - Prob. 4CCCh. 17 - Describe the process of gene expression, by which...Ch. 17 - What are the similarities and differences in the...Ch. 17 - What function do the 5' cap and the poly-A tail...Ch. 17 - Prob. 17.4CRCh. 17 - What will be the results of chemically modifying...Ch. 17 - In eukaryotic cells, transcription cannot begin...Ch. 17 - Prob. 2TYUCh. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Prob. 4TYUCh. 17 - Which component is not directly involved in...Ch. 17 - Using Figure 17.6, identify a 5' 3' sequence of...Ch. 17 - Prob. 7TYUCh. 17 - Would the coupling of the processes shown in...Ch. 17 - Prob. 9TYUCh. 17 - Prob. 10TYUCh. 17 - scientific inquiry Knowing that the genetic code...Ch. 17 - Prob. 12TYUCh. 17 - Prob. 13TYU
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- What percentage of the DNA in the genome actually corresponds to genes? How much is actually protein-coding exons? What makes up the rest?arrow_forwardWhen the human genome sequence was finally completed, scientists were surprised to discover that the genome contains far fewer genes than expected. How many genes are present in the human genome? Scientists have also found that there are many more different kinds of proteins in human cells than there are different genes in the genome. How can this be explained?arrow_forwardHow many nucleotides does the human genome contain?arrow_forward
- The Human Genome Project resulted in the identification of 20,000 genes that code for proteins in humans. On average, each gene can code for 4 different proteins. Which of the following processes explains how a single gene could code for more than one protein? A) the central dogma of molecular biology B) mutations C) alternative splicing D) redundancy in the genetic code E) the fact that there are three stop codonsarrow_forwardHow many bits of information are stored in an 8-mer DNA sequence? In the E. coli genome? In the human genome?arrow_forwardWhich of the following would be present in a genome but not the transcriptome? (Select all) A) Introns B) Exons C) PolyA tail D) Promoterarrow_forward
- Consider a portion of a gene in a cell with the sequence TTTTT. Which of the following bases would you find in the complementary RNA strand, and where in the (eukaryotic) cell would this RNA be synthesized? A) A-A-A-A-A; ribosome B) U-U-U-U-U; ribosome C) A-A-A-A-A; nucleus D) U-U-U-U-U; nucleusarrow_forwardIn a study showing that approximately 10% of protein-coding genes are essential for Cell survival .This translates into which of the following number of essential genes in the human genome .a)100 b) 500 c)1000 d)2000arrow_forwardThe complete set of RNA transcripts present in a cell under various conditions is called the: a) genome b) proteome c) transcriptome d) none of the abovearrow_forward
- a)histone H2A-H2B diner b) histone H3-H4 Octomer C) histone H1 D) histone h3-h4 tetramerarrow_forwardThe reason Genetic Engineering works is because of the This states that every organism uses the same basc pairs. Which are: Adenine, Guanine, & CYtosine. Also, in every organism, the same 3 base pair combinations will be the same 4. Also, in every organism, if the same codons are read by the ribosome, it codes´ 1. 2. 3. 5. Also, in every organism, if the same Amino Acids are assembled, it will be the Answer the questions: What is genetic engineering and why does it work? The ProcesSOf mokingchanges in the pna code of 7. What are Stem Cells? Celis with Potantial4o deve l0Pcinto many Bifterent 8. What is a positive result of GMOS? 6. Gmo are more Productive, the Produce more food. 9. What is a negative of GMOS? Gemetiç differnces is what heIp some sPecies 10. What is the end result of DNA Replication? we cnd UP With tNO identical Pna molecules. 11. What kind of Mutation is this? Original strand%3GCAT , Mutated strand COMPlementary Strand. 12. What carries the Amino Acids to the Ribosome?…arrow_forwardIf a human gene is found to contain five introns, the mature mRNA encoded by that gene would have how many exons? a) four exons b) five exons c) six exons d) there could be multiple mRNA that contain between one and six exonsarrow_forward
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