Biology 1001A Lecture Notes - Lecture 1: Peptide, Telomere, Intron

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8 Aug 2016

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Dna nb (nitrogenous base) sequence mrna codons. Dna has 2 sides, one 3" to 5" and one is 5" to 3". Mrna is synthesized (made) 5" to 3" by rna polymerase: complementary to the 3" and 5" strand, and the same as 5" to 3", remember to convert thymine to uracil for mrna. Mrna codes for specific proteins using gene code. Anti-codons read the mrna, and tells trna (taxi), which amino acid to bring. Anti-codons are complementary to the mrna codon. The amino acids which are brought together are then covalently linked (peptide bonds) Sequences of dna, which are repeated multiple times over and over again. Can be of any length minimum 2 5 base pairings. Telomeres: at the ends" of a chromosome, same sequencing codes. Vnts: (variable number of tendon repeats), in the chromosome used for things like dna fingerprinting. Promotor (only identified a promoter when it has a start codon after it 10ish a/t"s)

Related Questions

20. Identify four uses for transgenic organisms. The next groupof questions are based on the following information: DNA templatemolecule is: 5 prime (5') end: A-G-C-T-A-T-C-T-A-C-G-A: 3 prime(3') end

21. What will be produced by DNA replication? (Start from the 5prime end and list each complementary DNA base in order all the wayto the 3 prime end.)

22. What is the mRNA that will be produced. (Again start fromthe 5 prime end and list each complementary RNA base in order allthe way to the 3 prime end.) template)

23. What is the tRNA anticodon that will be needed to match thefirst mRNA codon in the sequence written for the answer to theprevious question?

24. What is the sequence of amino acids that will be produced bytranslating the mRNA sequence written for the answer to twoquestions above? (Read codons left to right)

26. How many codons are contained in the mRNA in the question22?

burgundytoad384

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

QUESTION 1. Choose the true statement about prokaryotic and eukaryotic DNA replication.

A.Eukaryotic DNA replication involves less protein factors than does prokaryotic DNA replication.

B. Prokaryotic DNA polymerases replicate DNA 5' to 3', while eukaryotic DNA polymerases replicate DNA 3' to 5'.

C. Eukaryotic DNA replication begins at multiple origins of replication, while prokaryotic DNA replication begins at a single origin of replication.

D. Prokaryotic genomes take longer to replicate than eukaryotic genomes.

QUESTION 2. Bacterial cells use DNA replication to:

A. make back-up copies of their genome in case of a mutation.

B. manifest multiple phenotypes at once.

C. copy their genetic material prior to binary fission.

D. build functional proteins.

QUESTION 3. Choose the true statement about the genetic code.

A. A cell's mRNA code is read four nucleotides at a time to specify a single amino acid.

B. The genetic code encodes 64 amino acids, one for each of the 64 corresponding codons.

C. The genetic code is redundant, with multiple codons specifying a single amino acid.

D. The genetic code varies widely among organisms, with each having a different set of codons for a corresponding amino acid.

QUESTION 4. Of the following enzymes, which are correctly matched with their function? To be marked correct, you'll need to select all correctly matched statements, as there may be more than one correct answer.

A. Helicase, relieves torsion stress as DNA unwinds

B. Ligase, covalently bonds adjacent Okazaki fragments

C. Primase, removes RNA primers

D. DNA polymerase III, builds most of the DNA on the leading and lagging strand

QUESTION 5. Which of the following contributes to DNA replication accuracy? To be marked correct, you'll need to select all true statements, as there may be more than one correct answer.

A. The capacity to proofread improves DNA replication accuracy.

B. A slow rate of DNA replication contributes to accuracy.

C. The use of primase improves DNA replication accuracy.

D. DNA replication accuracy is improved thanks to complementary base pairing rules.

Biology 1001A Lecture Notes - Lecture 1: Peptide, Telomere, Intron

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