Concept explainers
To discuss:
Synthesis and regulation of non-protein molecules such as carbohydrates and steroids by the genes.
Introduction:
DNA is a genetic material consisting of a long stretch of
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ANATOMY+PHYS VOL 1(CHP 1-17) >CUSTOM<
- The Link Between Genes and proteins The genetic material has to store information and be able to express it. What is the relationship among DNA, RNA, proteins, and phenotype?arrow_forwardBriefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNAarrow_forwardBriefly (list in bullet points) what are the FIVE stages of Protein synthesis. Why do you suppose incidences of mutations in enzymes involved in these processes are extremely rare in people — affectingarrow_forward
- examples of how RNA secondary structure and catalytic RNAs are important in gene expression.arrow_forwardfunctions of protein in a eukaryotic cell.arrow_forwardTrue or False Degeneracy of Genetic Code: 1. a given amino acid has more than one codon 2. the first two bases specify the amino acid 3. most amino acids have many synonyms 4. each codon specifies more than one amino acidarrow_forward
- Which step in the processing of heterogeneous nuclear RNA (in eukaryotes), into mature messenger RNA, is required for proper attachment of the small ribosomal subunit to the mature mRNA molecule? polyadenylation at the 3’ end 7-methyl-guanosine capping at the 5’ end excision of introns formation of quadruple-stranded DNA splicing of exonsarrow_forwardThe journey of a c f t r protein covering translation at ribosomes etcarrow_forwardWhat enzyme is responsible for forming peptide bonds between amino acids? O Aminoacyl-tRNA synthetase. RNA polymerase. O Peptidy-transferase. O Helicase.arrow_forward
- Biological functions of RNAarrow_forwardBriefly describe (two or three sentences) the role of tRNA in building a protein from mRNA.arrow_forwardHydrogen bonds are important in DNA replication and transcription. They are relatively weak chemical bonds. Why is this a desirable feature for DNA? Describe the effect (s) of changing (mutating) the promoter on the transcription of the DNA strand/gene the promoter controls. What happens to protein synthesis if a nonsense codon is inserted into the gene? Explain why a point mutation does not necessarily change the original amino acid sequence. (Explain silent mutations) Choose any pentapeptide composed of five different amino acids. List the amino acids. Present one messenger RNA codon for each amino acids and the sequence of nucleotides on the DNA that originally coded for your pentapeptide.arrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning