What must occur for a bacteria to synthesize of an inducible enzyme?
The formation of highly reactive ions. Substrate must bind to the enzyme. Repressor must bind to the operator.
What enzyme catalyzes the cutting and resealing of DNA?
A transposon contains a number of genes, coding for antibiotic resistance or other traits, flanked at both ends by insertion sequences coding for an enzyme called transpoase. Transpoase is the enzyme that catalyzes the cutting and resealing of the DNA during transposition.
Which enzyme breaks the hydrogen bonds during replication?
helicase
An enzyme called helicase then separates the DNA strands by breaking the hydrogen bonds between the nitrogenous base pairs.
How does an F+ cell differ from an HFR cell?
How does an F+ cell differ from an Hfr cell? -Hfr strains have the F plasmid integrated into the chromosome. -Hfr cells cannot perform conjugation. -F+ cells have no plasmids.
How enzymes are synthesized?
As far as we know at present, all enzymes are protein in nature, and their synthesis involves the linking together of amino acids in correct sequence. Each animal carries within its body cells, in the DNA molecules, coded information for the building up of its own specific proteins.
Which of the following is associated with synthesis of enzymes translation?
Ribosomes are the cell organelles involved in the process of protein synthesis.
What is the lagging strand synthesized by?
DNA polymerase
The lagging strand is synthesized discontinuously by DNA polymerase in sections called Okazaki fragments. These fragments are later connected together by DNA ligase to form a complete complementary strand.
Does topoisomerase cut DNA?
Topoisomerases cut DNA to release tension created by twists and turns in the double helix. Typically, DNA is negatively supercoiled. This makes it easier to pull the two strands of DNA apart. As a result, proteins and other factors can more easily access DNA when needed for important cell processes.
Why can helicase break hydrogen bonds?
To break the bonds, helicases use the energy stored in a molecule called ATP, which serves as the energy currency of cells. DNA helicases also function in other cellular processes where double-stranded DNA must be separated, including DNA repair and transcription.
What is the function of the conjugation Pilus?
Conjugative pili allow for the transfer of DNA between bacteria, in the process of bacterial conjugation. They are sometimes called “sex pili”, in analogy to sexual reproduction, because they allow for the exchange of genes via the formation of “mating pairs”.
What is F+ F and Hfr?
The key difference between F+ strains and Hfr is that F+ strains have F plasmids in the cytoplasm freely without integrating into bacterial chromosomes while Hfr strains have F plasmids integrated to their chromosomes.
What is enzyme synthesis?
Enzyme Synthesis 1 Enzymes. As far as we know at present, all enzymes are protein in nature, and their synthesis involves the linking together of amino acids in correct sequence. 2 Pollen Chemistry and Tube Growth*. 3 GENETICS OF LYSOSOMAL FUNCTIONS*
Why do enzymes change activity and quantity?
Developmental alterations in enzyme activity and quantity have been found in other systems to be due to changes in enzyme synthesis (Philippidis and colleagues, 1972) or to changes in both enzyme synthesis and degradation (Volpe and colleagues, 1973).
How are the enzymes involved in carbohydrate conversion activated?
Most of the enzymes involved in carbohydrate conversions become active because of synthesis, but some are mobilized by activation or release. The lipid bodies in seeds contain or acquire lipases that are involved in conversion of lipids to fatty acids and glycerol.
Is there a parallel observation of steps in enzyme synthesis in Bacillus cereus?
The observations of steps in enzyme synthesis were supported by the parallel observation of steps in enzyme synthesis during outgrowth of spores of Bacillus cereus or Bacillus subtilis.