the strand that is synthesized discontinuously during replication

short DNA fragments formed by discontinuous replication in one of the strands

Transition substitution

Purine replaced by another purine

a block or 1 nucleotide base pair lost from DNA

a block or 1 nucleotide base pair added to DNA

Transversion substitution

a block or 1 nucleotide base pair added to DNA

a 180° rotation of a segment of DNA

Purine replaced by another purine

a block or 1 nucleotide base pair lost from DNA

a 180° rotation of a segment of DNA

parts of two non-homologous chromosomes change places

Purine replaced by another purine

a block or 1 nucleotide base pair added to DNA

a block or 1 nucleotide base pair lost from DNA

a 180° rotation of a segment of DNA

a block or 1 nucleotide base pair lost from DNA

Purine replaced by another purine

Reciprocal translocation

parts of two non-homologous chromosomes change places

a 180° rotation of a segment of DNA

What does the nucleotide above show?

Deoxyribose sugar, phosphate group and a purine group containing adenine

Ribose sugar, phosphate group and a purine group containing adenine

Deoxyribose sugar, phosphate group and a purine group containing guanine

Ribose sugar, phosphate group and a purine group containing guanine

Initiation phase of the translation is described below:

All the above describes the initiation phase of the translation.

Small subunit of the ribosome reads from the 5 1 methylated cap of the mRNA and encounters the start codon

Initiator tRNA carries whose 5 1 CAU 3 1 anticodon (carries methionine) is complementary to AUG

Initiator tRNA sits in the P site of the completed ribosome

The recombination frequency between two genes is 60%. This means _________.

the two genes are united on the same chromosome

the two genes are close together on the same chromosome

What occurs during termination phase of translation?

All above is the correct sequence of termination phase of translation

Release factors recognize the termination codons and binds to the stop codons

Last tRNA releases the complete polypeptide

mRNA separates from the ribosome

The large and small subunits of the ribosomes dissociates

During initiation of transcription what happens?

All above describes the process of initiation of transcription

RNA polymerase and sigma factor binds at the promotor sequence

The region of DNA unwound to form an open promoter complex

Phosphodiester bonds are formed between the first two nucleotides

Sigma factor release from the open promoter complex

What occurs during elongation phase of translation?

All the sequence above describes the elongation phase of translation

Initiating tRNA at the P site and the second tRNA at its A site so that peptidyl transferase can catalyze formation of a peptide bond between the amino acids carried by the two tRNAs

As the ribosome moves, the initiating tRNA, which no longer carries an amino acid, is transferred to the E site and the other tRNA carrying the dipeptide shifts from the A site to the P site.

The empty A site now receives another tRNA, whose identity is determined by the next codon in the mRNA.

The uncharged initiating tRNA is bumped off the E site and leaves the ribosome.

During methyl-directed mismatch repair, what does the adenine methylase do?

Adds methyl group on the adenine of the parent strand

Adds ethyl group on the adenine of the parent strand

Removes methyl group on the adenine of the parent strand

Removes ethyl group on the adenine of the parent strand

Avery, MacLeod, and McCarty performed an experiment that prove DNA was responsible for the genetic change from rough (R) cells into smooth (S) cells. The outcome where no S cells are formed is a result from following below:

The heat-killed S cells are treated with DNase first and mix with R cells.

The heat-killed S cells are treated with RNase first and mix with R cells.

The heat-killed S cells are treated with lipase first and mix with R cells.

The heat-killed S cells are treated with protease first and mix with R cells.

The recombination frequency between two genes is 30%. This means _________.

the two genes are linked on the same chromosome

the two genes are not linked on the same chromosome

the two genes are on different chromosome

genetics

Authored by Fatima Alkaabi

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69 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During base excision repair, what is the enzyme that removes the deaminated uracil?

Glycoslyase

DNA exonuclease

AP endonuclease

DNA ligase

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the enzyme that catalyzes the phosphodiester bond between adjacent nucleotides during DNA replication?

DNA polymerase III

Hydroxylating agent

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Name two chemical mutagenic agent?

Hydroxylating agent, Alkylating agent, Deaminating agent, Intercalating agent

Exonuclease

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does transcription occur in a cell?

Nucleus

DNA polymerase III

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Peptidyl transferase catalyzes formation of peptide bonds between amino acids during translation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the enzyme that removes the primer during DNA replication?

Exonuclease

DNA polymerase III/DNA ligase/DNA polymerase

RNA polymerase and sigma factor

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the enzyme and protein that binds to the promoter sequence located near the beginning of the gene during initiation of transcription?

RNA polymerase and sigma factor

DNA polymerase III/DNA ligase/DNA polymerase

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genetics

During base excision repair, what is the enzyme that removes the deaminated uracil?

What is the enzyme that catalyzes the phosphodiester bond between adjacent nucleotides during DNA replication?

Name two chemical mutagenic agent?

Where does transcription occur in a cell?

Peptidyl transferase catalyzes formation of peptide bonds between amino acids during translation

What is the enzyme that removes the primer during DNA replication?

What is the enzyme and protein that binds to the promoter sequence located near the beginning of the gene during initiation of transcription?

Griffith experiment

a virus that infects bacteria

the sugar within the nucleotide subunits of DNA

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