Which of the following statement about DNA replication is false?
The statement pertaining to DNA replication that is false is D: Okazaki fragments are synthesized as part of the leading strand.
Which of the following statement is true about DNA polymerase?
Which of the following is true about DNA polymerase? Explanation: DNA pol can synthesize only a new DNA strand not m-RNA. It can do this in the 5′ to 3′ direction.
Which of the following are limitations of DNA polymerase?
What are the two limitations of DNA polymerase? DNA polymerase is limited by the fact that it cannot add nucleotides in a 3′ to 5′ direction and that it cannot initiate synthesis on its own. It also is prone to making errors.
What is the role of DNA polymerase?
DNA polymerase is responsible for the process of DNA replication, during which a double-stranded DNA molecule is copied into two identical DNA molecules.
What are the two roles of DNA polymerase?
The main function of DNA polymerase is to synthesize DNA from deoxyribonucleotides, the building blocks of DNA. By contrast, RNA polymerases synthesize RNA from ribonucleotides from either RNA or DNA. When synthesizing new DNA, DNA polymerase can add free nucleotides only to the 3′ end of the newly forming strand.
What enzyme is most important in DNA replication?
enzyme DNA polymerase
What 2 enzymes are used in DNA replication?
1 Answer. DNA primase and DNA polymerase.
What are the 6 types of enzymes?
The six kinds of enzymes are hydrolases, oxidoreductases, lyases, transferases, ligases and isomerases.
Can you take too much enzymes?
Taking too many enzyme supplements can actually damage your intestines, but taking too few can keep you from absorbing the nutrients you need. Do not change the dose without talking with your CF care team.
What type of enzymes are used in industry?
The main industrial enzymes can be classified in three groups: carbohydrases, proteases, and lipases. Amylases are comprised in the carbohydrase group, together with cellulases, glucose isomerase, glucose oxidase, pectinases, xylanases, invertase, galactosidase, and others [13].
What are sources of enzymes?
All forms of life live by enzymes and also produce enzymes. As a result, enzymes can be obtained from three different sources: plants, animals, and microorganisms. Some commercial enzymes such as papain, bromelain (bromelin) ficin, and malt diastase are derived from plant sources.
What are the 4 functions of enzymes?
Enzymes catalyze all kinds of chemical reactions that are involved in growth, blood coagulation, healing, diseases, breathing, digestion, reproduction, and many other biological activities.
What are examples of enzymes?
Examples of specific enzymes
- Lipases – a group of enzymes that help digest fats in the gut.
- Amylase – helps change starches into sugars.
- Maltase – also found in saliva; breaks the sugar maltose into glucose.
- Trypsin – found in the small intestine, breaks proteins down into amino acids.
What is enzyme catalysis with example?
Enzymes are biological catalysts. Enzymes are also proteins that are folded into complex shapes that allow smaller molecules to fit into them. The place where these substrate molecules fit is called the active site. Examples are lactase, alcohol dehydrogenase and DNA polymerase.
What is the difference between enzyme and hormone?
One of the major differences between enzymes and hormones is that enzymes act as a catalyst for a reaction and hormones act as messengers that trigger various functions in the body.
Where are enzymes found in the cell?
For example, the enzymes that catalyze synthesis of fatty acids (a type of lipid ) are located in the cytoplasm , while the enzymes that breakdown fatty acids are located in the mitochondria .
Are enzymes found in all cells?
Enzymes are found in all living cells.
How many enzymes are in a cell?
1300 different enzymes
What are the 4 main digestive enzymes?
Examples of digestive enzymes are:
- Amylase, produced in the mouth. It helps break down large starch molecules into smaller sugar molecules.
- Pepsin, produced in the stomach.
- Trypsin, produced in the pancreas.
- Pancreatic lipase, produced in the pancreas.
- Deoxyribonuclease and ribonuclease, produced in the pancreas.