Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Write down some function of Mrna?
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Step 1
mRNA stands for messenger RNA. The process of the formation of messenger RNA from the DNA is called transcription.
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Step 2
mRNA is synthesized from DNA by the process of transcription.
mRNA contains information from the DNA. It helps in the synthesis of proteins. It is translated into various types of proteins which are essential for our body.
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- A certain mRNA strand has the following nucleotide sequence: 5AUGACGUAUAACUUU3 What is the anticodon for each codon? What is the amino acid sequence of the polypeptide? (Use Figure 13-5 to help answer this question.) Figure 13-5 The genetic code The genetic code specifies all possible combinations of the three bases that compose codons in mRNA. Of the 64 possible codons, 61 specify amino acids (see Figure 3-17 for an explanation of abbreviations). The codon AUG specifies the amino acid methionine and also signals the ribosome to initiate translation (start). Three codonsUAA, UGA, and UAGdo not specify amino acids; they terminate polypeptide synthesis (stop).arrow_forwardIdentify the features of tRNA that are important in decoding genetic information and converting it into protein language.arrow_forwardBriefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNAarrow_forward
- If the genetic code uses triplets, how many different amino acids can be coded by a repeating RNA polymer composed of UA and UC (UAUCUAUCUAUC ...)? a. one b. two c. three d. four e. fivearrow_forwardThe genetic code is defined as a series of _______________ in _______________. (a) anticodons; tRNA (b) codons; DNA (c) anticodons; mRNA (d) codons; mRNA (e) codons and anticodons; rRNAarrow_forwardIf the genetic code used 4 bases at a time, how many amino acids could be encoded?arrow_forward
- Indicate in which category, transcription or translation, each of the following functions belongs: RNA poly-merase, ribosomes, nucleotides, tRNA, pre-mRNA, DNA, anticodon, amino acids.arrow_forwardWhat is the function of DNA?arrow_forwardDefine replication, transcription, and translation. In what part of the cell does each process occur?arrow_forward
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