1.What is the role of tRNA during translation? break apart mRNA and send it back to the nucleus so that it can be reused Carry amino acids to the mRNA for correct placement into the protein chain bond to open the DNA strand to carry the code for protein synthesis out of the nucleus carry ribosomes to the site of protein synthesis 2. Signal molecules from embryonic cells cause transcriptional changes in nearby target cells in the process called: Transcription Gene regulation Pattern formation Induction 3. Which of the following statements concerning RNA is correct? tRNA transfers the base sequence of DNA to the ribosome Hydrogen bonding within the same strand of RNA is necessary to maintain its three dimensional structure A double helix is the predominant three-dimensional structure of most forms of RNA. mRNA translates the base sequence of DNA for use in protein synthesis
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The role of tRNA during translation is to carry amino acids to the mRNA for correct placement into the protein chain. Show more…
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1. tRNA brings amino acids to the ribosome in order to create a protein during which process? a) transcription b) mitosis c) translation d) replication 2. Which statement does NOT describe a step in DNA replication? a) The enzyme helicase unwinds and unzips the double helix to prepare it to serve as a template b) DNA polymerase adds complementary bases to each template, forming the new double strands of DNA c) The DNA is cut into pieces using polymerase enzymes d) Each strand of the parent DNA serves as a template for the new molecule 3. After transcription is completed, what happens to the mRNA? a) It leaves the cytoplasm through the cell membrane b) It remains in the nucleus c) It enters the cytoplasm and moves toward ribosomes d) It becomes part of the nucleolus 4. A gene for the protein keratin is being made in a hair follicle cell. How can mRNA represent an exact copy of that gene? a) DNA polymerase makes a copy of the gene that is inserted into the mRNA b) It is put together using base pairing rules c) RNA polymerase cuts out a section of the DNA d) tRNA copies the amino acid sequence for the protein 5. Match the following roles of each RNA molecule to its name 1) rRNA 2) tRNA 3) mRNA a) carries the instruction for protein synthesis from the nucleus to the ribosome b) transports amino acids to the ribosome to build the protein c) involved in the functioning of the ribosome sub-units
Adi S.
Which molecule carries the Amino Acids needed to build proteins to the ribosome where they will be bonded to form protein polymers? codon shifters tRNA mRNA DNA polymerase
Mystique T.
Place the following steps of DNA translation in the correct order. (Chapter 12 ) 1. tRNA carrying a methionine moves into the $\mathrm{P}$ site. 2. The mRNA attaches to the ribosome. 3. A tRNA brings the appropriate amino acid to the A site. 4. The tRNA is released to the E site. A. 2,1,3,4 B. 4,3,1,2 C. 3,1,2,4 D. 3,2,4,1
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