Homework Answers
Introns are used for some other functions in the nucleus and cytoplasm.
Introns
- Regulate expression of certain genes
- Play role in splicing
- Excided intron becomes part of post-splicing complexes that lead to efficient debranching and degradation
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What is the fate of intonic sequences removed from RNA molecules? They are degraded They are...
Part A What are three observations that suggested eukaryotic RNA was an intermediate between DNA and...
Part A What are three observations that suggested eukaryotic RNA was an intermediate between DNA and protein? Select the three observations. O DNA plays the major role in replication, which allows for sustainable transfer of genetic information. O RNA is transported out of the nucleus and into the cytoplasm where protein translation occurs. Three types of RNA are found in the cell, and all of them are involved in protein synthesis. O DNA is found in the nucleus and protein...
Fluorescence Mapping of Blastomere in Sea Urchins Fate mapping is a technique that allows determination of...
Fluorescence Mapping of Blastomere in Sea
Urchins
Fate mapping is a technique that allows determination of the
fate of cells from the three germ layers. In worms, the endoderm
gives rise to the cells that line the intestines. The ectoderm
gives rise to cells of the nervous system and body covering. The
mesoderm gives rise to the muscles and other organs between the
ectoderm and mesoderm. A researcher is tracing the fate of a
particular cell (blastomere) from its position...
the several other 10.4 to show t 3. The base uracil substitutes for the base thymine in RNA. Complete Table ways...
the several other 10.4 to show t 3. The base uracil substitutes for the base thymine in RNA. Complete Table ways RNA differs from DNA Table 10.4 DNA Structure Compared with RNA Structure RNA Sugar Bases Strands Helix DNA Deoxyribose Adenine, guanine, thymine, cytosine Double stranded with base pairing Yes Complementary Base Pairing Complementary base pairing occurs between DNA and RNA. The RNA base uracil pairs with the DNA base adenine; the other bases pair as shown previously. Complete Table...
Listed below are features of biological molecules
.1. Listed below are features of biological molecules. For each, indicate if the feature describes a characteristic of DNA, or RNA, neither DNA nor RNA, or both DNA and RNA. Single stranded Contains hydrogen bonds Is a long molecule Contains covalent bonds Is translated to protein Contains complex carbohydrate Contains thymine Double stranded Is a short molecule Contains uracil Has peptide bonds Contains nucleotides Contains guanine Is confined to the nucleus Makes a replication fork 2. What is a protein? 3. A peptide bond (check "Yes" if correct; "No" if incorrect): Yes Ne A. Joins nucleotides in a...
Transcription is the process of rewriting DNA. DNA molecules are made from 4 different nucleotides which...
Transcription is the process of rewriting DNA. DNA molecules are made from 4 different nucleotides which acts as building blocks. These building blocks are adenine, thymine, guanine and cytosine. When put together in different chemical combinations they become directions for the functions of the cell molecules which are primarily proteins. When a certain protein is needed, the RNA polymerase enzyme will find the gene for that particular protein and makes an RNA copy of it. DNA and RNA have similar...
want to double check! 25. Th e DNA sequences encoding the initiation whese parated bcoding the...
want to double check!
25. Th e DNA sequences encoding the initiation whese parated bcoding the initiation and termination codons of a certain protein amino acids in length. there of the protei nucleotides on a certain organism's chromosome; however ssuming that there has been no post-translational processing elined from this gene is translated, the protein product is only 250 A. The RNA was synthesized in a bacterial cell n, what can you conclude from these observations? The RNA was synthesized...
34. DNA polymerase A. adds nucleotides to the leading strand of DNA B. removes RNA from...
34. DNA polymerase A. adds nucleotides to the leading strand of DNA B. removes RNA from the lagging strand C. unwinds the DNA during duplication D. cuts DNA at specific sites to relieve mechanical tension E. is not used in eukaryotic cells 35. Radioactive thymidine added to a cell will bind to A. DNA that is being synthesized B. mRNA that is being synthesized C. RNA that is being synthesized D. miRNA that is being synthesized E. all of the...
Trivia Questions 1. This level of control in gene expression prevents a gene from being transcribed...
Trivia Questions 1. This level of control in gene expression prevents a gene from being transcribed when it is not needed. 2. These genes produce proteins that govern the activity of structural genes. 3. These intervening sequences are cut out of an mRNA transcript before it can leave the nucleus. 4. A chromosome is made up of these two molecules. 5. This term refers to DNA that is composed of at least two species. 6. These two vectors are used...
Chapter 25: Pathogenic RNA Viruses Read pp. 750-757; MICRO CHECK page 757: 9. What is the...
Chapter 25: Pathogenic RNA Viruses Read pp. 750-757; MICRO CHECK page 757: 9. What is the first step in the synthesis of dsDNA from +SsRNA by reverse transcriptase? 11. How is the +RNA genome of HIV used differently than genomes of other +RNA viruses? 12. What are the functions of the HIV glycoproteins gp120 and gp41?
What are the three functional groups that comprise a nucleotide? What do nucleotides have in common...
What are the three functional groups that comprise a nucleotide? What do nucleotides have in common with amino acids or simple sugars? When the structure of DNA was first elucidated, many biologists quickly saw how this structure explained the passage of information from one generation to another. How does the structure of DNA explain generation-to-generation flow of information? In other words, give a brief description of the structure of DNA and tell how this structure allows for replication. Which of...
Part A What are three observations that suggested eukaryotic RNA was an intermediate between DNA and protein? Select the three observations. O DNA plays the major role in replication, which allows for sustainable transfer of genetic information. O RNA is transported out of the nucleus and into the cytoplasm where protein translation occurs. Three types of RNA are found in the cell, and all of them are involved in protein synthesis. O DNA is found in the nucleus and protein...
Fluorescence Mapping of Blastomere in Sea
Urchins
Fate mapping is a technique that allows determination of the
fate of cells from the three germ layers. In worms, the endoderm
gives rise to the cells that line the intestines. The ectoderm
gives rise to cells of the nervous system and body covering. The
mesoderm gives rise to the muscles and other organs between the
ectoderm and mesoderm. A researcher is tracing the fate of a
particular cell (blastomere) from its position...
the several other 10.4 to show t 3. The base uracil substitutes for the base thymine in RNA. Complete Table ways RNA differs from DNA Table 10.4 DNA Structure Compared with RNA Structure RNA Sugar Bases Strands Helix DNA Deoxyribose Adenine, guanine, thymine, cytosine Double stranded with base pairing Yes Complementary Base Pairing Complementary base pairing occurs between DNA and RNA. The RNA base uracil pairs with the DNA base adenine; the other bases pair as shown previously. Complete Table...
want to double check!
25. Th e DNA sequences encoding the initiation whese parated bcoding the initiation and termination codons of a certain protein amino acids in length. there of the protei nucleotides on a certain organism's chromosome; however ssuming that there has been no post-translational processing elined from this gene is translated, the protein product is only 250 A. The RNA was synthesized in a bacterial cell n, what can you conclude from these observations? The RNA was synthesized...
34. DNA polymerase A. adds nucleotides to the leading strand of DNA B. removes RNA from the lagging strand C. unwinds the DNA during duplication D. cuts DNA at specific sites to relieve mechanical tension E. is not used in eukaryotic cells 35. Radioactive thymidine added to a cell will bind to A. DNA that is being synthesized B. mRNA that is being synthesized C. RNA that is being synthesized D. miRNA that is being synthesized E. all of the...
Trivia Questions 1. This level of control in gene expression prevents a gene from being transcribed when it is not needed. 2. These genes produce proteins that govern the activity of structural genes. 3. These intervening sequences are cut out of an mRNA transcript before it can leave the nucleus. 4. A chromosome is made up of these two molecules. 5. This term refers to DNA that is composed of at least two species. 6. These two vectors are used...
Chapter 25: Pathogenic RNA Viruses Read pp. 750-757; MICRO CHECK page 757: 9. What is the first step in the synthesis of dsDNA from +SsRNA by reverse transcriptase? 11. How is the +RNA genome of HIV used differently than genomes of other +RNA viruses? 12. What are the functions of the HIV glycoproteins gp120 and gp41?
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