Protein Synthesis and DNA mutations

Front

What is the function of tRNA in protein synthesis?

Back

tRNA (transfer RNA) carries amino acids to the ribosome, where they are added to the growing polypeptide chain during translation.

Front

What is a frameshift mutation?

Back

A frameshift mutation occurs when nucleotides are inserted or deleted from the DNA sequence, altering the reading frame of the genetic code.

Front

What is the structure of DNA?

Back

DNA has a double helix structure, consisting of two strands twisted around each other, held together by base pairs.

Front

Define a mutation in genetic terms.

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Front

What type of mutation is an insertion?

Back

An insertion is a type of mutation where one or more nucleotide bases are added into the DNA sequence.

Front

What is the role of mRNA in protein synthesis?

Back

mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where it serves as a template for protein synthesis.

Front

What is the difference between substitution and deletion mutations?

Back

Substitution mutations replace one nucleotide with another, while deletion mutations remove one or more nucleotides from the DNA sequence.

Front

What are the three types of RNA involved in protein synthesis?

Back

The three types of RNA are mRNA (messenger RNA), tRNA (transfer RNA), and rRNA (ribosomal RNA).

Front

What is the significance of the genetic code?

Back

The genetic code is a set of rules that defines how the sequence of nucleotides in DNA is translated into the amino acid sequence of proteins.

Front

How do environmental factors influence mutations?

Back

Environmental factors such as radiation, chemicals, and viruses can increase the rate of mutations by damaging DNA.