What is the function of the release factor during translation in eukaryotes?

A) It binds to the stop codon in the A site in place of a tRNA.

B) It supplies a source of energy for the termination of translation.

C) It releases the amino acid from its tRNA to allow the amino acid to form a peptide bond.

D) It releases the ribosome from the ER to allow polypeptides into the cytosol.

What is the function of the release factor (RF)?

What is the function of the release factor (RF)?

A) It separates tRNA in the A site from the growing polypeptide.

B) It binds to the stop codon in the A site in place of a tRNA.

C) It releases the amino acid from its tRNA to allow the amino acid to form a peptide bond.

D) It supplies a source of energy for termination of translation.

E) It releases the ribosome from the ER to allow polypeptides into the cytosol.

What is the function of the release factor (RF)?

A. It releases the ribosome from the ER to allow polypeptides into the cytosol.

B. It separates IRNA in the A site from the growing polypeptide.

C. It releases the amino acid from its tRNA to allow the amino acid to form a peptide bond.

D. It supplies a source of energy for termination of translation.

E. None of these answers are correct

F. It binds to the stop codon in the A site in place of a tRNA.

Which of the following mutations would be most likely to have a harmful effect on an organism? (A) a deletion of three nucleotides near the middle of a gene (B) a single nucleotide deletion in the middle of an intron ( C) a single nucleotide deletion near the end of the coding sequence (D) a single nucleotide insertion downstream of, and close to, the start of the coding sequence

A part of an mRNA molecule with the following sequence is being read by a ribosome: $\\$ 5' CCG-ACG-3' (mRNA).$

$$The following charged transfer RNA molecules (with their anticodons shown in the 3' to 5' direction) are available. Two of them can correctly match the mRNA so that a polypeptide can form.$$

$$**tRNA Anticodon**: GGC CGU UGC CCG ACG CGG$$

$$**Amino Acid**: Proline Alanine Threonine Glycine Cysteine Alanine Which of the following anticodons in the first tRNA to bind will complement this mRNA?$$

$$A. 3'-UGC-5'$$

$$B. 5'-UGC-3'$$

$$C. 5'-GCC-3'$$

$ D. 3'-GGC-5'

The anticodon 3'-AUC-5' would pair with the codon

a. 5'-AUC-3'

b. 5'-CAU-3'

c. 5'-ATC-3 '

d. 5'-UAG-3'

e. 5 -TAG-3'

Give the sequence of an mRNA molecule that is the complement of the following coded sequence of DNA: ATTACGCGGTCAGTA.

Which of the following molecular structures contain codons?

A. protein

B. rRNA

C. tRNA

D. mRNA

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?

A. There is considerable genetic variation in garden peas.

B. Traits are inherited in discrete units, and are not the results of "blending."

C. Recessive genes occur more frequently in the F1 generation than do dominant ones.

D. Genes are composed of DNA.

E. An organisms that is homozygous for many recessive traits is at a disadvantage.

Mendel's second law of independent assortment has its basis in which of the following events of meiosis I?

A) Synapsis of homologous chromosomes.

B) Crossing over of homologous pairs of chromosomes.

C) Alignment of pairs of homologous chromosomes along the middle of the cell.

D) The division of cells during cytokinesis.

Transcription in eukaryotes requires which of the following in addition to RNA polymerase?

A. the protein product of the promoter

B. ribosomes and tRNA

C. aminoacyl synthetase

D. start and stop codons

E. several transcription factors (TFs)

How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was in G1 of the cell cycle?

Which of the following statements best supports the one gene-one enzyme hypothesis?

Select one.

A. Multiple antibody genes can code for different related proteins, depending on the splicing that takes place post-transcriptionally.

B. A mutation in a single gene can result in a defective protein.

C. Sickle-cell anemia results in normal hemoglobin.

D. Alkaptonuria results when individuals lack multiple enzymes involved in the catalysis of homogentisic acid.