Which of the following choices is true of tRNA?
Which one of the following choices is true of tRNA? tRNAs are extremely small molecules. Each tRNA binds a specific amino acid. A tRNA with a particular codon will bind to a specific amino acid and transfer it to the ribosome for insertion into the new polypeptide.
What is meant by translocation quizlet?
Define translocation. Translocation is the movement of organic food such sucrose and amino acids from the source and to the sinks.
What causes mutagen quizlet?
The large ribosomal subunit binds to the small one. The start codon signals the start of translation. What does a mutagen cause? a change in the sequence of DNA.
What is currently considered the best definition of a gene?
Gene: The basic biological unit of heredity. A segment of deoxyribonucleic acid (DNA) needed to contribute to a function. An official definition: According to the official Guidelines for Human Gene Nomenclature, a gene is defined as “a DNA segment that contributes to phenotype/function.
Which one of the following is true of tRNA quizlet?
Which one of the following is true of tRNA molecules? tRNA molecules are single stranded RNA. The 3′ terminal nucleotide of tRNA is the site of amino acid attachment. tRNA molecules contain the unusual nucleotides dihydrouridine, pseudouridine, and ribothymine.
Which of the following are not found in normal tRNA?
tRNAs contain unusual nucleotides such as dihydrouridine, ribothymidine, inosine, and pseudouridine.
Which of the following events occurs during transcription quizlet?
Which of the following events occurs during transcription? A molecule of RNA is formed based on the sequence of nucleotides in DNA. During transcription, RNA nucleotides line up with their complementary DNA partners, transcribing the information in DNA into RNA.
What is a mutagen give 3 examples of mutagens quizlet?
Examples of mutagens include radioactive substances, x-rays, ultraviolet radiation, and certain chemicals.
What is the direct result of a mutagen quizlet?
Chemical mutagens cause a change in DNA that alters the function of proteins, as a result, cellular processes are impaired.
What is the term gene?
(jeen) The basic unit of heredity that occupies a specific location on a chromosome. Each consists of nucleotides arranged in a linear manner. Most genes code for a specific protein or segment of protein leading to a particular characteristic or function.