A gene is a sequence of DNA capable of directing the synthesis of one or more related polypeptides or RNAs. sequence of DNA capable of directing the synthesis of one or more related biological molecules of any type. protein-coding sequence of DNA. sequence of DNA capable of directing the synthesis of a polypeptide.
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- The correct order of genetic information transfer within biological systems is BEST described as RNA to DNA to Protein O DNA to RNA to Protein Structures to Function to Emergent Properties Genetic Information to Cells to MoleculesClassify each description as a property of DNA only, RNA only, or both DNA and RNA. DNA only RNA only Both DNA and RNA contains the sugar deoxyribose contains the base uracil passed from existing cells to new cells during cell division primary function is protein synthesis polymer made up of nucleotides double-stranded found throughout the cell contains the base adenine Answer BankWhich of the following contributes to the diversity of proteins that human life has? Select all that apply. Unique genetic codes among different organisms Highly error-prone DNA and RNA polymerases that incorporate many changes with each replication or transcription event A large genome with many protein-encoding units The use of alternative splicing of mRNA
- A protein that has been reversibly denatured has Multiple Choice temporarily lost part or all of its primary structure. been genetically modified due to errors in the nucleotides in the parent DNA temporarily lost part or all of its secondary or tertiory structure. temporarily lost the hydrogen bonding between nitrogenous bases. temporarily lost its amino acid residues.mRNA and tRNA are involved in producing proteins from genes in the DNA. One codon consisting of 3 nucleotides corresponds to an amino acid in the protein that gets built. It is important to understand the relationship between the following nucleic acids: DNA template and mRNA strands are (the same or complementary) DNA template and tRNA anticodon strands are (the same or complementary) DNA non-template and mRNA strands are (the same or complementary) DNA non-template and tRNA anticodon strands are (the same or complementary) DNA template and DNA non-template strands are (the same or complementary) mRNA and tRNA anticodon strands are (the same or complementary)mRNA and tRNA are involved in producing proteins from genes in the DNA. One codon consisting of 3 nucleotides corresponds to an amino acid in the protein that gets built. It is important to understand the relationship between the following nucleic acids: DNA template and mRNA strands are ANSWER (the same or complementary) DNA template and tRNA anticodon strands are ANSWER (the same or complementary) DNA non-template and mRNA strands are ANSWER (the same or complementary) DNA non-template and tRNA anticodon strands are ANSWER (the same or complementary) DNA template and DNA non-template strands are ANSWER (the same or complementary) mRNA and tRNA anticodon strands are ANSWER (the same or complementary)
- Which of the following is NOT true of deoxyribonucleic acid (DNA)? Stores genetic information that can be expressed within a bacterial cell, transferred "vertically" to offspring cells, or "horizontally" to other recipient cells Serves as a template for the transcription of mRNA Each DNA nucleotide contains the sugar ribose, phosphate, and one of the following nitrogenous bases: adenine, uracil, guanine, or cytosine Found as a circular molecule in bacteria, either as chromosomes or plasmids None of the other four answers (all are true of DNA)Draw and label an rRNA (ribosome). Make sure to describe any special features/parts. Draw and label a tRNA molecule. Make sure to describe any special features/parts.The following is the base sequence on the coding strand of a DNA molecule. AAT GCC AGT GGT TCG CAC Rewrite the base sequence above and underneath write the base sequence for the template DNA strand. Write the base sequence for the strand of mRNA transcribed from the original strand of DNA or template strand. Remember transcribing means making mRNA from DNA. Write the amino acid sequence translated from this mRNA. Translating means making an amino acid chain from mRNA. A) If the fourth nucleotide in the coding DNA strand was changed from a G to a C, what would be the base sequence of the new strand of mRNA? b) What would the resulting amino acid fragment be? A) If a G were added to the coding DNA strand after the third nucleotide, what would be the base sequence of the resulting mRNA? B) What would the resulting amino acid fragment be?
- A gene is a piece of DNA that codes for a protein. Genes are transcribed into mRNA and are on the antisense strand of DNA. A gene contains the following nucleotide sequence: TAC GGC ACC GTA ATT If the following changes occurred in the gene, identify the type of mutation and how it would affect the protein made (amino acid) Changes: Second codon change from GGC to AGC Third adenine base changed to a guanine base Ninth nucleotide changes from C to T Nucleotide with adenine (A) base inserted between 3rd and 4th nucleotidePolypeptides can be reversed back to RNA because of the enzyme transcriptase. The genetic material must be replicated with high fidelity and great speed. Eukaryotic mRNA is said to be polycistronic since they encode multiple polypeptide chains RNA-synthesis occurs inside the nucleus while protein synthesis in the cytoplasm of eukaryotic organisms. Write T if the statement is true and write F if the statement is falseDNA footprinting is a technique that can be used to identify: A region of DNA that has been damaged by mutation. The position of a particular gene of a chromosome. Whether a protein binds to a specific DNA sequence. The position of internally double-stranded regions in a single- stranded DNA molecule. The specific binding site of a repressor, polymerase, or other protein on the DNA.
