Biology 1202B Lecture Notes - Lecture 17: Start Codon, Transfer Rna, Dna Replication

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4 Apr 2018

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Exercises that that you have to do. Translation occurs either in the cytoplasm or the er. The (cid:396)i(cid:271)oso(cid:373)e that has the lo(cid:374)gest polypeptide (cid:272)hai(cid:374) is (cid:272)losest to the . Ribosomes are made up of rna (rrna) and proteins. The rna is the catalyst in the ribosomes. Anticodon will bind to the codon (another complementary base pairs) Rna poly(cid:373)e(cid:396)ase uses the 3" 5" st(cid:396)a(cid:374)d as its te(cid:373)plate, it t(cid:396)a(cid:374)s(cid:272)(cid:396)i(cid:271)es i(cid:374) This (cid:373)akes (cid:373)rna st(cid:396)a(cid:374)d usi(cid:374)g u i(cid:374)stead of t i(cid:374) the 5" 3" di(cid:396)e(cid:272)tio(cid:374) To know which strand to use, you need to look for the promotor! There are start (aug) and stop (uaa, uag, uga) codons you need to know this! Laches on at the start codon and that where it translation should start. Multiple ribosomes can simultaneously translate a single mrna (only occurs in a prokaryotic cell) Every gene has a promotor (which regulates transcription)

Related Questions

1. _________________________ is the name of the process that produces proteins using RNA molecules.

a.Transcription

b Translation

c. Replication

d. Mutagenesis

2. The peptide bonding site on the ribosome:

a. A site

b. P site

c. E site

d. D site

3. The name given to the bond formed between two amino acids.

a. Hydrogen bond

b. Double bond

c. Peptide bond

d. Negative bond

4. __________________________ is the movement of the mRNA molecule on the ribosome to open up the A-site for the new incoming amino acid.

a. Transformation

b. Mutation

c. Translocation

d. Initiation

5. What does the term semi-conservative mean.

a. Replication of RNA is semi-conservative, each new strand consists of one old strand of RNA and one new strand of RNA.

b. Replication of DNA is semi-conservative, each new strand consists of one old strand of DNA and one new strand of DNA.

c. Replication of DNA is semi-conservative, each new strand consists of new strands of nucleotides.

d. Transcription of RNA is semi conservative.

6. This molecule functions during protein synthesis to recognize the codon and bring the proper amino acid back to the ribosome for translation.

a. mRNA

b. tRNA

c. rRNA

d. DNA polymerase

7. What is meant by the base-pairing rule.

a. Bases on a single strand of DNA are always found as pairs

b. Adenine always base pairs with guanine; cytosine with thymine

c. Adenine always base pairs with thymine; cytosine with guanine

d. Bases on a single strand of RNA are found in pair.

8. In this step of protein synthesis, amino acids are added to a growing polypeptide chain.

a. Initiation.

b. Elongation.

c. Termination.

d. Transpiration.

9. Three complementary bases found in a mRNA are called ____________________.

a. Anti-codon.

b. Triplet.

c. Doublet.

d. Codons.

10. Which statement best describes the job or function of the messenger RNA.

a. Carries the map of the gene sequence in the form of codons to the cytoplasm

for translation of the protein.

b. It transfers amino acids to the ribosome for protein synthesis.

c. It forms the ribosomes.

d. It helps replicate DNA.

ceruleangnat663

RNA has many different roles in gene expression. Check all thatapply.

mRNA defines the polypeptide to be formed

DNA defines the polypeptide to be formed

rRNA, along with proteins, forms the ribosome

mRNA delivers the appropriate amino acid to the ribosome

tRNA delivers the appropriate amino acid to the ribosome

Translation is appropriately named because the process transfersthe code from DNA to RNA, though in complementary fashion.

True

False

The template strand is to the sense strand as the coding strandis to the antisense strand.

True

False

The phenomenon symbolized by DNA â RNA â Protein is referred toas the Central Dogma because it is true for all organisms.

True

False

The reading frame refers to the selection of the correct tripletof nucleotides by selecting the correct beginning point. If thebeginning point is wrong, all nucleotides will be clustered intothe wrong codons.

True

False

Activating enzymes need to recognize only one anticodon.

True

False

coffeehorse275

If the bold term in each statement is correct hen write the letter C next to it. if the term is incorrect then replace it with the correct term.

The nucleotide bases found only in RNA and not in DNA is thymine.

The class of RNA molecules that carries the amino acids that are added to the growing polypeptide chain is tRNA.

During translation immediately after the first and second tRNA molecules become attached side by side on the mRNA., a hydrogen bond is formed between adjacent amino acids.

In the genetic code, 20 bases on the DNA code for a single amino acid.

The major lipid involved is transcription is RNA polymerase.

The one strand of DNA used as a template in the making of mRNA during transcription, is the template strand.

chocolatemuskrat416

Biology 1202B Lecture Notes - Lecture 17: Start Codon, Transfer Rna, Dna Replication

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