CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 11, Problem 2TYK
Level 1: Knowledge/Comprehension
2. Which of the following methods of gene regulation do eukaryotes and prokaryotes have in common?
a. elaborate packing of DNA in chromosomes
b. activator and repressor proteins, which attach to DNA
c. the addition of a cap and tail to mRNA after transcription
d. lac and trp operons
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1. Which of the following statements about the flow of genetic information is correct?A. Translation occurs prior to transcription during protein synthesis.B. During translation, the DNA template is converted to amino acids by the ribosomes.C. During transcription, the DNA template is converted to an RNA molecule by the enzyme RNA polymerase.D. Eukaryotic mRNA needs to be transported to the cytoplasm before the protein products are synthesized.
2. What is the main difference in the cell wall composition between eukaryotes and prokaryotes?A. Eukaryotic cell wall is mainly composed on sugar molecules while prokaryotic cell wall has both sugars and amino acids.B. Prokaryotic cell wall is mainly composed on sugar and lipid molecules while eukaryotic cell wall has both sugars and amino acidsC. Prokaryotic cell wall is mainly composed on sugar molecules while eukaryotic cell wall has both sugars and amino acids.D. Eukaryotic cell wall is mainly composed on sugar and lipid molecules while…
what is the first event to take place in translation in eukaryotic cell?
a. An clongation of the polypeptide chain by the addition of amino acids
b. Binding of the larger ribosomal subunits to the smaller ribosomal subunits
c. Base pairing of activated methionine-tRNA to AUG of messenger RNA
d. The small subunits of ribosome recognizing and attaching to 5' cap of mRNA
In prokaryotes, control of gene expression usually occurs at the
a. splicing of pre-mRNA into mature mRNA.
b. initiation of translation.
c. initiation of transcription.
d. All of the choices are correct.
Chapter 11 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 11 - Complete the following concept map to test your...Ch. 11 - Level 1: Knowledge/Comprehension 2. Which of the...Ch. 11 - A homeotic gene does which of the following? a. It...Ch. 11 - Which of the following is a valid difference...Ch. 11 - The control of gene expression is more complex in...Ch. 11 - Your bone cells, muscle cells, and skin cells look...Ch. 11 - All your cells contain proto-oncogenes, which can...Ch. 11 - You obtain an egg cell from the ovary of a white...Ch. 11 - Mutations can alter the function of the lac operon...Ch. 11 - It took three sheep to create the clone Dolly: A...
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- Post-translational control refers to: a. regulation of gene expression after transcription b. regulation of gene expression after translation c. control of epigenetic activation d. period between transcription and translationarrow_forwardWhich of the following is characteristic of genes and gene regulation in both bacteria and eukaryotes? (a) promoters (b) non-coding DNA within coding sequences (c) enhancers (d) operons (e) DNA located in a nucleusarrow_forwardHow is translation different in prokaryotes and eukaryotes? a. In prokaryotes, because they do not have a nucleus, the translation of mRNA occurs while it is being transcribed b. In prokaryotes, pre-mRNA translation before transcription occurs within the cell c.In prokaryotes, reverse trancriptase simultaneously translates and transcribes mRNAd.In prokaryotes, functional mRNA allows for translation to be skipped, and proteins are made during transcriptionarrow_forward
- 3. Inducers: a. transcribe a messenger off a DNA template b. bind to ribosomes to activate the production of specific proteins c. are a molecule that binds to a repressor to activate it d. are essential to function of transfer RNAs during translation e. bind to repressor protein and transcription of mRNA can then take placearrow_forwardAlternate splicing: A. Reduces mRNA half-life by shortening poly(A) tails B. Disrupts histone arrangement for increased transcription C. Uses topoisomerase to complete its function D. Can produce 2 or more products from one genearrow_forward1. Create a DNA sequence with eighteen nucleotides. Indicate its 3’ on the left and 5’ on the right since that’s the template strand you will need in the next question to transcribe the mRNA. 2. Transcribe the DNA sequence above and separate the triplets into codons. Indicate 5’ and 3’ in the correct location on the strand. (Don’t worry about splicing- assume that the pre- mRNA is the same as the mature mRNA sequence) 3. Look at the genetic code, and indicate which amino acid is coded for by the codons in the above mRNA. 4. ANSWER BELOW QUESTIONS: A. First write the original DNA strand. Indicate where the substitution was by either circling it or writing it in a different color. Then write the mutated DNA sequence with the point mutation (aka substitution) wherever you choose for it to be. Again, circle it or write it in a different color. Do the same for the transcribed mRNA. Repeat the directions for 2 and 3 for this new DNA stand. (i.e., include the mRNA and translated protein…arrow_forward
- A scientist observing a cell during gene expression would be able to easily distinguish it as a prokaryotic cell by which of the following observations? Group of answer choices as soon as the DNA introns are removed from the template after the 5' caps are converted to mRNA after a transcription initiation complex has been formed during transcription once the pre-mRNA has been converted to mRNA 2. Which of the following is least related to the other items? Group of answer choices inducer repressor operator enhancers regulatorarrow_forwardThe information in DNA is used by cells to produce proteins that perform various functions in cells. The process of gene expression involves the transcription of a mRNA molecule that is translated by ribosomes into a strand of amino acids.1. Use your DNA strand to construct a part of a messenger RNA molecule.DNA: A G T A C C G G G C A A A C T G C A T T G T GmRNA:2. find it by searching the internet for the "Genetic Code Chart" to determine the sequence of amino acids in your polypeptide chain. Remember to START translation at the start codon by adding a Methionine and STOP translating when you reach a stop codon.arrow_forwardA scientist observing a cell during gene expression would be able to easily distinguish it as a prokaryotic cell by which of the following observations? Group of answer choices as soon as the DNA introns are removed from the template after the 5' caps are converted to mRNA after a transcription initiation complex has been formed during transcription once the pre-mRNA has been converted to mRNA 2. Which of the following would best ensure that a kidney cell and a liver cell from the same person would express different genes? Group of answer choices differences in introns unique sets of transcription factors they only have specific genes unique sets of promotersarrow_forward
- Part A) In your own words describe what happens in transcription and translation Include which types of nucleic acids are involved in each step Describe the function of each type of nucleic acid in the process of making proteins Part B) Also, explain how two nucleic acids "recognize" or "talk" to each otherarrow_forward1.Describe the journey of a protein, from its synthesis to its final destination 2. Explain the different stages of transcription and the role of the elements involved with the right terminology (template vs. non-transcribed strand, promoter, stop sequence, TATA box, general and specific transcription factors, RNA polymerase II, etc.); 3. Explain what the maturation (modifications) of pre-messenger RNA consists of and its rolearrow_forwardResearchers are designing and testing antisense drugs as therapies for a variety of diseases, inclusing cancer, AIDS, diabeates, and muscular dystrophy. The drugs are also being tested to fight infection by deadly viruses such as Ebola. Antisense drugs consist of short RNA strands coplementary in sequence to mRNAs that form during the progression of a disease. How do you think these drugs work?arrow_forward
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