DNA in human mitochondria encodes 22 different tRNA molecules. However, 32 different tRNA molecules are required for translation of proteins within mitochondria. Explain.

Q: A gene contains 30% thymine. What is the percentage of pyrimidines present in this segment? Explain.

A: Purines and pyrimidines are chemical molecules that play a role in the production of DNA and RNA and…

Q: In eukaryotic cells, secreted proteins are initially directed to the endoplasmic reticulum and then…

A: Introduction The secretory pathway refers to the endoplasmic reticulum, Golgi apparatus and the…

Q: The covalent attachment of an amino acid to a tRNA is an endergonic reaction. In other words, it…

A: Introduction  In the protein translation process, the key role is played by the tRNA which…

Q: Explain why energy is NOT needed for co-translational translocation but IS needed for…

A: Protein translocation can be defined as the process by which peptides are transported across the…

Q: A certain ochre suppressor inserts glutamine in response to the ochre codon. What is the most likely…

A: In this scenario, where a suppressor mutation allows the insertion of glutamine instead of…

Q: Explain post-translational modification of proteins in general with the types of reactions. Provide…

A: Ans:--PMT's are enzymatic , covalent chemical modification of protiens that typically occur ofter…

Q: The following RNA sequence represents a small messenger which can be translated in a prokaryotic…

A: The first step in translating an RNA sequence into a protein is to divide the sequence into codons,…

Q: Consider the following coding 71 nucleotide DNA template sequence (It does not contain a…

A: In cell protein formed according to the sequence on mRNA. mRNA is formed from DNA sequence by the…

Q: What is the primary difference betwee class I and class II aminoacyl-tRNA synthetases.   a. Class…

A: An enzyme that synthesizes tRNAs by amino acid polymerization is called an aminoacyl-tRNA synthetase…

Q: Several experiments were conducted to obtain information about how the eukaryotic ribosome…

A: A ribosome is a biological unit made up of RNA and protein that functions as the cell's protein…

Q: What is the [CH3COO−]/[CH3COOH] ratio inan acetate buffer at pH 4.00?

A: A buffer is a mixture of weak acid/weak base and its conjugate base/acid. It is an aqueous solution.…

Q: The E. coli genome contains approximately 4639 kb. (a) How many copies of the 6-bp recognition…

A: E.coli is a type of bacteria that normally lives in the intestine. It is also found in the gut of…

Q: What naturally found amino acyl tRNA synthetase can be used to attach 2-aminobutyric acid to a tRNA?…

A: Higher living beings vary in their ability to synthesize the 20 common amino acids. Most bacteria…

Q: Order the following choices to indicate the sequence of steps in the process of elongation of a…

A: The following are necessary for prokaryote polypeptide synthesis to begin: mRNA, the 30S ribosome…

Q: Cystic fibrosis (CF) is an inherited disorder caused by different types of mutations, many of which…

A: CF is caused by a mutation in a gene called the cystic fibrosis transmembrane conductance regulator…

Q: All translation begin at free ribosomes in the cytosol, yet all secreted proteins are translocated…

A: Translation is the process in which a mature mRNA (messenger RNA) is coded into a functional protein…

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.