Podcast
Questions and Answers
Which statement accurately describes the diagram, representing a portion of a nucleic acid?
Which statement accurately describes the diagram, representing a portion of a nucleic acid?
- It is an RNA molecule, as RNA exclusively contains adenine.
- It is a DNA molecule, because DNA exclusively contains thymine.
- It is a DNA molecule, as DNA exclusively contains adenine.
- It is an RNA molecule, because only RNA contains thymine.
In a DNA molecule, which diagram correctly shows the arrangement of components in a nucleotide pairing with a guanine-containing nucleotide?
In a DNA molecule, which diagram correctly shows the arrangement of components in a nucleotide pairing with a guanine-containing nucleotide?
- Sugar - Phosphate - Cytosine
- Phosphate - Sugar - Cytosine
- Phosphate - Sugar - Adenine
- Sugar - Phosphate - Adenine
Which option correctly identifies the sugar type, the structure, and the nitrogenous bases present in a DNA molecule?
Which option correctly identifies the sugar type, the structure, and the nitrogenous bases present in a DNA molecule?
- Deoxyribose, single-stranded, A, U, C, G
- Ribose, double-stranded, A, T, C, G
- Ribose, single-stranded, A, U, C, G
- Deoxyribose, double-stranded, A, T, C, G
In the segment of DNA depicted, which combination correctly identifies the labeled components?
In the segment of DNA depicted, which combination correctly identifies the labeled components?
Which cellular process involves the pairing of cytosine, thymine, and adenine with guanine, adenine, and thymine, respectively?
Which cellular process involves the pairing of cytosine, thymine, and adenine with guanine, adenine, and thymine, respectively?
Which option correctly identifies the packaging, shape, and location of a chromosome in a prokaryotic cell?
Which option correctly identifies the packaging, shape, and location of a chromosome in a prokaryotic cell?
A cell with non-radioactive DNA replicates in a medium with radioactive nucleotides. Which diagram represents DNA composition in the resulting daughter cells?
A cell with non-radioactive DNA replicates in a medium with radioactive nucleotides. Which diagram represents DNA composition in the resulting daughter cells?
Which combination correctly identifies the cell type, DNA structure, and DNA location in a cell?
Which combination correctly identifies the cell type, DNA structure, and DNA location in a cell?
Which statement accurately describes DNA in cells?
Which statement accurately describes DNA in cells?
A strand of DNA has the base sequence ATGTCCG. What base sequence would result after semi-conservative replication?
A strand of DNA has the base sequence ATGTCCG. What base sequence would result after semi-conservative replication?
Which row identifies the result and the name of the essential process involved in the synthesis of new cells in an organism?
Which row identifies the result and the name of the essential process involved in the synthesis of new cells in an organism?
What is the role of restriction enzymes and probes in genetic engineering?
What is the role of restriction enzymes and probes in genetic engineering?
Erythromycin interferes with protein synthesis in bacterial cells. What process is likely affected by erythromycin?
Erythromycin interferes with protein synthesis in bacterial cells. What process is likely affected by erythromycin?
In an mRNA strand, 30% of bases are uracil, 10% are cytosine, and 20% are adenine. What percentage of bases on the correlating DNA strand would be cytosine?
In an mRNA strand, 30% of bases are uracil, 10% are cytosine, and 20% are adenine. What percentage of bases on the correlating DNA strand would be cytosine?
Given the mRNA sequence UAC CCG AAU UAG, what DNA sequence would be transcribed to produce this mRNA?
Given the mRNA sequence UAC CCG AAU UAG, what DNA sequence would be transcribed to produce this mRNA?
A length of mRNA attached to a ribosome codes for a polypeptide that is 120 amino acids long. How many mRNA nucleotides code for the amino acids in this polypeptide?
A length of mRNA attached to a ribosome codes for a polypeptide that is 120 amino acids long. How many mRNA nucleotides code for the amino acids in this polypeptide?
Small RNA pieces, called RNA interference (RNAi), prevent specific gene expression. What modification enable RNAi to enter cells for this?
Small RNA pieces, called RNA interference (RNAi), prevent specific gene expression. What modification enable RNAi to enter cells for this?
The sequence AUAGCCCUAGGC was transcribed from a nucleic acid. Which sequence is the template for this transcription?
The sequence AUAGCCCUAGGC was transcribed from a nucleic acid. Which sequence is the template for this transcription?
A length of DNA codes for part of a polypeptide and contains 633 base pairs. What is the most likely base pair count in associated codons and amino acids?
A length of DNA codes for part of a polypeptide and contains 633 base pairs. What is the most likely base pair count in associated codons and amino acids?
The table shows combinations of a gene section and how it is processed. Which combination is correct?
The table shows combinations of a gene section and how it is processed. Which combination is correct?
Which statement about ribosomal RNA (rRNA) is not correct?
Which statement about ribosomal RNA (rRNA) is not correct?
The diagram shows process A, compound B, and structures 1 and 2 in a cell. Identify process A, compound B, and structures 1 and 2.
The diagram shows process A, compound B, and structures 1 and 2 in a cell. Identify process A, compound B, and structures 1 and 2.
The diagram shows protein manufacture in a eukaryotic cell. Which combination correctly matches name of chemical structure A, process 1 location, and macromolecule D?
The diagram shows protein manufacture in a eukaryotic cell. Which combination correctly matches name of chemical structure A, process 1 location, and macromolecule D?
A small protein section has the amino acid sequence glutamine-lysine-proline-valine-threonine. Which DNA base codes to produce this section of protein?
A small protein section has the amino acid sequence glutamine-lysine-proline-valine-threonine. Which DNA base codes to produce this section of protein?
A scientist identified a sequence of bases on a fragment: AGA UGU GCC GAA, coding for arginine, cysteine, alanine, and glutamic acid. What alternatives identify the nucleic acid type, its complementary DNA base sequence, and tRNA anticodon?
A scientist identified a sequence of bases on a fragment: AGA UGU GCC GAA, coding for arginine, cysteine, alanine, and glutamic acid. What alternatives identify the nucleic acid type, its complementary DNA base sequence, and tRNA anticodon?
Which statements correctly identifies presence or absence of introns and exons in a number, and the function of a gene?
Which statements correctly identifies presence or absence of introns and exons in a number, and the function of a gene?
The coding strand of a gene is 15% adenine and 35% cytosine. What best describes composition of the transcribed mRNA strand?
The coding strand of a gene is 15% adenine and 35% cytosine. What best describes composition of the transcribed mRNA strand?
Refer to the following diagram that shows the enzyme aminoacyl-tRNA synthetase binding to a tRNA molecule and an amino acid. What process is shown?
Refer to the following diagram that shows the enzyme aminoacyl-tRNA synthetase binding to a tRNA molecule and an amino acid. What process is shown?
Scientists needed to identify genes w/ different DNA methylation patterns in dairy cows to test milk production. What cell location has the first step in gene product synthesis?
Scientists needed to identify genes w/ different DNA methylation patterns in dairy cows to test milk production. What cell location has the first step in gene product synthesis?
A genetic code, based on reading the mRNA sequence four bases at a time, was recently developed. How many different codons are possible in the quadruplet codon system?
A genetic code, based on reading the mRNA sequence four bases at a time, was recently developed. How many different codons are possible in the quadruplet codon system?
Flashcards
What is DNA?
What is DNA?
A molecule that carries genetic information in all living organisms.
What are DNMTs?
What are DNMTs?
The enzyme that adds methyl groups to DNA, affecting gene expression.
What is DNA replication?
What is DNA replication?
A process where one strand acts as a template, resulting in two identical DNA molecules.
What is mRNA?
What is mRNA?
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What is Transcription?
What is Transcription?
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What is a ribosome?
What is a ribosome?
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What is Translation?
What is Translation?
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What are restriction enzymes?
What are restriction enzymes?
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What are heat-resistant enzymes?
What are heat-resistant enzymes?
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What is Polymerase Chain Reaction (PCR)?
What is Polymerase Chain Reaction (PCR)?
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What is Gel electrophoresis?
What is Gel electrophoresis?
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What is a probe?
What is a probe?
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What is a mutation?
What is a mutation?
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What is Genetic Engineering?
What is Genetic Engineering?
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What is a vector?
What is a vector?
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What is Transgenic?
What is Transgenic?
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What are Caspases?
What are Caspases?
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What is an active site?
What is an active site?
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What is CRISPR cas9?
What is CRISPR cas9?
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What is Enzyme catalysis?
What is Enzyme catalysis?
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Study Notes
- The following outlines DNA and proteins.
DNA Structure, Function, and Replication
- Diagrams can represent parts of nucleic acids showing components like cytosine, sugar, adenine, and thymine.
- The diagram represents part of a DNA molecule because DNA contains thymine. Diagrams showing components of a nucleotide feature a sugar, phosphate and a nitrogenous base.
- The arrangement shows how components pair in a DNA molecule with a nucleotide containing guanine
- Key components: deoxyribose sugar, double stranded structure, and the bases adenine, thymine, cytosine, and guanine define DNA.
- Symbols in diagrams denote sugar, phosphate, thymine (T), adenine (A), cytosine (C), and Guanine (G).
- Replication of DNA involves pairing bases such as cytosine, thymine, and adenine with guanine, adenine, and thymine.
Packaging, Shape, and Location of Genetic Material
- A chromosome in a prokaryotic cell in unbound, circular and it's located in the cytosol.
Conservative Replication
- DNA information passes between generations through semi-conservative replication.
- Given a DNA sequence ATGTCCG, a final strand features the sequence TACAGGC.
Replication Processes
- The process is semi-conservative replication and it results in identical sister chromatids.
DNA Methylation
- Semi-conservative replication, absent DNMTs, fails to maintain cell DNA methylation patterns.
Directionality of DNA in Transcription
- The arrangement of the molecule and transcription relies on understanding directionality.
Genes and Protein Synthesis
- Erythromycin interferes with protein bacterial cell synthesis by affecting the movement of ribosomes along mRNA.
- Given an mRNA strand with 30% uracil (U), 10% cytosine (C), and 20% adenine (A), the DNA transcribed features 20% cytosine.
mRNA Molecule Sequencing
- mRNA sequence: UAC CCG AAU UAG.
- DNA sequence: ATG GGC TTA ATC.
Polypeptide Coding
- A 120 amino acid polypeptide is coded by 360 mRNA nucleotides that are attached to a ribosome .
Expressing Specific Genes
- Expressing specific genes involves the use of small pieces of the RNA called RNA interference (RNAi),.
- Modified RNAi, as opposed to other forms of it, could enter a cell through the membrane.
Template-Based Transcription
- Template = where sequence of bases transcribes from a nucleic acid.
- Sequence: AUAGCCCUAGGC.
- Sequence: TATCGGGATCCG.
DNA Length, Codons, and Amino Acids
- For a DNA length with 633 base pairs codes for a polypeptide, 211 codons and 211 amino acids are likely involved.
- An exon features transcription and translation.
Ribosomal RNA (rRNA)
- Ribosomal RNA, or rRNA, possesses these characteristics:
- Is found in both prokaryotic and eukaryotic cells
- Help binds to the formation of poly peptides
- mRNA (messenger RNA) is produced during transcription, then it binds to the bases.
diagrammatic Representation Cellular activity
- diagrams show representation cellulare activity and chemical composition activity
- Process A Transcription and Compound BmRNA both Ribosomes is the result/structure2, DNA the structure1.
Mammalian Protein Manufacture
- The base sequence U A U will have results to a tRNA code of tyrosine by B15.
Gene Expression Mutations
- Mutations prevented by gene one would then mostly affect or prevent this action from happening.
Coding Strand Anticipation and corresponding action
- The anticodon then can give of in from this strand with base a sequence AGC is UGC.
Protein Coding
- Genes = codes for a particular RNA
Coding strand base composition
- Coding with an adeniase base of with 15%, cytosine composes about 35%.
Transferring Protein enzyme binding
- Transferring an enzyme from the amino acide with an acid bind synthetase and transfer a molecule into it
- As tRNA combines with molecule acids with amino then synthetrase is matched is its acids.
Genetics in connection to the enzyme and molecules
- The acid chain at the start is then what the acid or synthetase and the atp will connect with before an amino
Genetically testing
- Identify where these cells have been change over the gene production and also check if there are cells from the cells or any particular test
- Cell division or change needs to occuor in the correct order
Genetic codes and test
- Scientists codes can base of there mRNA to test and code for the quadruped
Tithin for cell composition
- titithin is the largest function in of moleclecuar the humna or other animal like the rat, which then can can result to mutation
The cell cycle
- The cell cycle needs the production of energy the cells needs the the molecelaur enegy needs also
Protein Structure and Function
- Biochemical is a pathway in some human and then the process may results
- Reaction catalyzed enzymes like result products
Protein and Enzyme Reaction
- Drug used to describe a blood the protein
Altering Shapes
- Altering to moleculaur for the the shape change
Temperatures enzyme
- Denaturs or can also not form the the structure needed for other structures
MethylAmine Enzymes
- The cell can react with molecule or may create some
Compund blocking enzmes
- Blocking moleculaur enzyme is needed for the growth rate may act a reaction
Following graph which shows temp effects to an Enzy reaction
- Rate reaction for a reaction by enzyme
Aminoacid structure
- 4 aminobenzioc are with molecules needed or a part of with
Specificity
- Specificity substrate molecule is a determined one
Enzymic reaction
- Activatin energy and can come from heat or radiation
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