Question

In: Biology

Enzymes are A. Biological Catalyst B. Present in living cells C. Molecules which decrease the energy...

Enzymes are

A. Biological Catalyst
B. Present in living cells
C. Molecules which decrease the energy of activation
D. All of the above

Solutions

Expert Solution

Enzymes are biological molecules made up of proteins (except for some RNA enzymes). They act as catalyst in biological reaction, by enhancing or speeding up the rate of the reaction, and themselves remaining unchanged at the end of the reaction. They are produced by living organisms only and enhance the rate of the reaction by reducing the activation energy required by the substrate molecules to come together and convert to the product. In absence of enzyme, the activation energy is fairly high and is difficult for the substrate molecules to break their bonds to form the product by overcoming the activation energy.

Hence all the given options are correct. Hence the correct answer is D.


Related Solutions

name one non-protein class of biological catalyst- What was it? What are the classes of enzymes?...
name one non-protein class of biological catalyst- What was it? What are the classes of enzymes? What are four advantages of biological catalysts over chemical catalysts? General properties of enzymes Compare and contrast with chemical catalysts
A packed bed reactor with present of catalyst: A(g) + 0.5 B(g) --> C(g) . ....
A packed bed reactor with present of catalyst: A(g) + 0.5 B(g) --> C(g) . . -rA’ = k CA0.33CB0.66 . A student is tasked with designing the reactor and predicting the output. The student forgets to take into account the effects of pressure drop on the design. For a packed bed reactor with 100 g of catalyst, the exiting concentration of C that the student determines is likely to be equal/ greater than the exiting concentration that is predicted...
Biological membranes are present in all cells, and in eukaryotic cells they also form the endomembrane...
Biological membranes are present in all cells, and in eukaryotic cells they also form the endomembrane system. They act as gatekeepers that selectively move certain ions and compounds into and out of the cell or cell organelles.             (a) Which of the following best describes a biological membrane? a bilayer containing lipids with hydrophilic head groups facing the extracellular fluid and cytoplasm, and hydrophobic tail groups extending inward...OR... a bilayer containing lipids with hydrophobic head groups facing the extracellular fluid and cytoplasm,...
Which of the following types of cells are antigen-presenting cells? A. Lymphocytes B. Dendritic cells C....
Which of the following types of cells are antigen-presenting cells? A. Lymphocytes B. Dendritic cells C. Macrophages D. Red blood cells In the early 1930’s a procedure to detect cancer of the uterine cervix was first introduced by: A. George Papanicolaou B. James Papner C. Mary Papa D. Steven Mendel The goal of adjuvant treatment is to: A. Fluorescent mark cancer cells B. Kills nay cancer cells remaining after primary treatment. C. Relieve side of treatment or signs and syptoms...
Describe e Biological membranes present as barrier to polar molecules and enumerate the system of transport...
Describe e Biological membranes present as barrier to polar molecules and enumerate the system of transport proteins across the membranes
Please Answer All Enzymes ___________. A) are biological catalysts B) can be denatured by increased temperature...
Please Answer All Enzymes ___________. A) are biological catalysts B) can be denatured by increased temperature C) can be denatured by pH changes D) all of these A prokaryotic cell __________. A) lacks a nucleus B) lacks membrane bound organelles C) is an organism in either Domain Archaea or Bacteria D) all of these Osmosis is the diffusion of __________ through a permeable membrane from an area of high concentration to low concentration. A) water B) sugar C) salt D)...
7. There are millions of enzymes which play important role in various biological processes in the...
7. There are millions of enzymes which play important role in various biological processes in the body and outside. There are many commercial applications of enzymes as they are used in detergents and also meat tenderizing etc... Given below are five reactions catalyzed by enzymes. Based on the reactions ‘a’ to ‘e’ identify and define the class of the enzyme and write the general equation of that class a. Glutamate is subjected to dehydrogenation in the presence of NAD to...
Some of the enzymes, which are associated in converting fats into carbohydrates, are present in (a)...
Some of the enzymes, which are associated in converting fats into carbohydrates, are present in (a) microsomes (b) glyoxysomes (c) liposomes (d) golgi bodies.
which of these molecules is the least polar? (a)CH2O (b) F2 (c) CH3F (d) CH3Cl
which of these molecules is the least polar? (a)CH2O (b) F2 (c) CH3F (d) CH3Cl
What is the basic reaction by which biological monomers form polymers? A. hydrolysis B. dehydration C....
What is the basic reaction by which biological monomers form polymers? A. hydrolysis B. dehydration C. mechanical displacement If the environment surrounding a cell has a lower concentration of dissolved substances than the cell, the A. environment is isotonic to the cell B. environment is hypertonic to the cell C. cell will not experience a net gain or loss of water D. environment is hypotonic to the cell. E. cell will die Cell theory states that A. life is spontaneously...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT