What are enzymes? (a) saccharides that catalyze chemical reactions (b) unsaturated fats that catalyze chemical reactions (c) DNA molecules that catalyze chemical reactions (d) proteins that catalyze chemical reactions

What are enzymes?
(a) saccharides that catalyze chemical reactions
(b) unsaturated fats that catalyze chemical reactions
(c) DNA molecules that catalyze chemical reactions
(d) proteins that catalyze chemical reactions
by

1 Answer

Answer :

proteins that catalyze chemical reactions
by

Related questions

How enzymes speed up catalyze reactions?

Description : How enzymes speed up catalyze reactions?

Last Answer : Feel Free to Answer

Proteinous substances which catalyze biochemical reactions are known as (A) Activators (B) Catalysts (C) Enzymes (D) Hormones

Description : Proteinous substances which catalyze biochemical reactions are known as (A) Activators (B) Catalysts (C) Enzymes (D) Hormones

Last Answer : Answer : C

Name the type of proteins that work to catalyze metabolic reactions or can modify other proteins to switch their activity on or off.

Description : Name the type of proteins that work to catalyze metabolic reactions or can modify other proteins to switch their activity on or off.

Last Answer : Enzymes

Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of carbohydrates, fats and proteins. (c) Enzymes of electron transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Description : Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of ... transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Last Answer : (c) Enzymes of electron transport are embedded in outer membrane.

Drying oils contain a fairly large proportion of – (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

Description : Drying oils contain a fairly large proportion of – (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

Last Answer : (4) unsaturated fatty acids Explanation: They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.

Drying oils contain a fairly large proportion of (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

Description : Drying oils contain a fairly large proportion of (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

Last Answer : unsaturated fatty acids

Stem and loop structures are A- proteins that help partially denatured enzymes to recover their native configuration B- structures in DNA caused by inverted repeats C- structures at the ends of linear eukaryotic DNA molecules D- the bonds between adjacent DNA nucleotides in the same strand

Description : Stem and loop structures are A- proteins that help partially denatured enzymes to recover their native configuration B- structures in DNA caused by inverted repeats C- structures at the ends of linear eukaryotic DNA molecules D- the bonds between adjacent DNA nucleotides in the same strand

Last Answer : structures in DNA caused by inverted repeats

Which one of the following statements is not characteristic of allosteric enzymes? (A) They frequently catalyze a committed step early in a metabolic pathway (B) They are often composed of subunits (C) They follow Michaelis-Menten kinetics (D) They frequently show cooperativity for substrate binding

Description : Which one of the following statements is not characteristic of allosteric enzymes? (A) They frequently catalyze a committed step early in a metabolic pathway (B) They are often composed of subunits (C) They follow Michaelis-Menten kinetics (D) They frequently show cooperativity for substrate binding

Last Answer : Answer : C

Which of the following is not true regarding enzymes? (A) They catalyze only a particular type of reaction (B) They remain active even after separation from the source (C) They are destroyed after the completion of the reaction they catalyse (D) They are irreversibly destroyed at high temperature (E) Their activity depends on the pH of the solution

Description : Which of the following is not true regarding enzymes? (A) They catalyze only a particular type of reaction (B) They remain active even after separation from the source (C) They are destroyed ... They are irreversibly destroyed at high temperature (E) Their activity depends on the pH of the solution

Last Answer : Answer : C

Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those that catalyze the production of cAMP (C) cause release of the catalytic subunit upon binding of the hormone (D) are not very specific and bind a number of different hormones

Description : Hormone receptors that stimulate cAMP production (A) are part of a complex of two proteins that transform the external signal into internal cAMP production (B) are proteins distinct and separate from those ... binding of the hormone (D) are not very specific and bind a number of different hormones

Last Answer : Answer : B

Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. Bile salts are detergents, amphiphilic molecules, i.e., molecules with a polar water-soluble portion and a non-polar fat-soluble portion. This feature allows bile salts to enclose fats inside water-soluble micelles in a process called emulsification for them to be in contact with intestinal lipases, enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Last Answer : What is the adnexal organ of the digestive system in which bile is stored?

All enzymes are made of (A) Fats (B) Carbohydrates (C) Proteins (D) Amino acids

Description : All enzymes are made of (A) Fats (B) Carbohydrates (C) Proteins (D) Amino acids

Last Answer : (C) Proteins

Enzymes belong to the category of (A) Proteins (B) Carbohydrates (C) Vitamins (D) Fats

Description : Enzymes belong to the category of (A) Proteins (B) Carbohydrates (C) Vitamins (D) Fats

Last Answer : (A) Proteins

Which one of the following macromolecules would NOT normally be used for microbial energy metabolism. a. DNA b. Proteins c. Carbohydrates d. Fats

Description : Which one of the following macromolecules would NOT normally be used for microbial energy metabolism. a. DNA b. Proteins c. Carbohydrates d. Fats

Last Answer : b. Proteins

The reactions of the extracellular digestion are hydrolysis reactions, i.e., breaking of molecules with the help of water. The enzymes that participate in digestion are hydrolytic enzymes.

Description : The reactions of the extracellular digestion are hydrolysis reactions, i.e., breaking of molecules with the help of water. The enzymes that participate in digestion are hydrolytic enzymes.

Last Answer : Which organs of the body are part of the human digestive system?

Organic molecules that increase the rate of metabolic reactions with themselveschangingareknown as A- coenzymes B- enzymes C- substrates D- .reactants

Description : Organic molecules that increase the rate of metabolic reactions with themselveschangingareknown as A- coenzymes B- enzymes C- substrates D- .reactants

Last Answer : enzymes

Enzymes are(A) Proteins with high molecular weight (around 10,000)(B) Derived from living organisms(C) Catalyst for temperature sensitive reactions(D) All (A), (B) and (C)

Description : Enzymes are (A) Proteins with high molecular weight (around 10,000) (B) Derived from living organisms (C) Catalyst for temperature sensitive reactions (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

What causes unsaturated fatty acid to have different shape than saturated fats?

Description : What causes unsaturated fatty acid to have different shape than saturated fats?

Last Answer : what are accurate comparisons of bases found in robins as opposed to bases found in sparrows

Fats as compared to oils have (A) More unsaturated glycerides of fatty acids (B) Less unsaturated glycerides of fatty acids (C) Much higher reactivity to oxygen (D) Lower melting point

Description : Fats as compared to oils have (A) More unsaturated glycerides of fatty acids (B) Less unsaturated glycerides of fatty acids (C) Much higher reactivity to oxygen (D) Lower melting point

Last Answer : (B) Less unsaturated glycerides of fatty acids

Although benzene is highly unsaturated, it does not undergo addition reactions, why?

Description : Although benzene is highly unsaturated, it does not undergo addition reactions, why?

Last Answer : Ans. Because of extra stability, due to delocalization of π-electrons.

By generally dividing food into carbohydrates, fats and proteins and considering the digestive process until the pylorus (exit of stomach), which of these mentioned types of food have already undergone chemical digestion?

Description : By generally dividing food into carbohydrates, fats and proteins and considering the digestive process until the pylorus (exit of stomach), which of these mentioned types of food have already undergone chemical digestion?

Last Answer : Until the exit of the stomach, carbohydrates, in the mouth, and proteins, in the stomach, have already undergone chemical breaking by digestive enzymes. Carbohydrates have suffered action of the salivary ... of the gastric juice. Fats, until reaching the duodenum, do not undergo chemical digestion.

Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct

Description : Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct

Last Answer : (4) All of these are correct Explanation: In chemistry, the study of rates and mechanisms of chemical processes and, of the factors on which they depend, is called kinetics. is the study of ... provides a very detailed picture of which bonds are broken and formed during the course of a reaction.

Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct

Description : Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct

Last Answer : All of these are correct

Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA

Description : Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA

Last Answer : Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA A. ii, iv B. ... iv, C. ii, iii, iv D. i, ii, iii, iv

During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.

Description : During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.

Last Answer : a) precipitate DNA

The restriction enzymes are used in genetic engineering, because (a) they can cut DNA at specific base sequence (b) they are nucleases that cut DNA at variable sites (c) they can degrade harmful proteins (d) they can join different DNA fragments.

Description : The restriction enzymes are used in genetic engineering, because (a) they can cut DNA at specific base sequence (b) they are nucleases that cut DNA at variable sites (c) they can degrade harmful proteins (d) they can join different DNA fragments.

Last Answer : (a) they can cut DNA at specific base sequence

Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins needed in cell cycle (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children.

Description : Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins ... and also the same degree of polymorphism in an individual, which is heritable from parents to children.

Last Answer : (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children

What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Description : What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Last Answer : (3) It converts proteins into peptones Explanation: Pepsin is an endopeptidase that breaks down proteins into peptone and polypeptides. If is produced in the stomach and is one of the main digestive enzymes.

Nitrogen is an essential constituent of all: (1) Fats (2) Proteins (3) Vitamins (4) Carbohydrates

Description : Nitrogen is an essential constituent of all: (1) Fats (2) Proteins (3) Vitamins (4) Carbohydrates

Last Answer : (2) Proteins Explanation: Nitrogen is a major constituent of all proteins, and thus of all living organisms. The deficiency of nitrogen causes yellowing of older leaves, stunted plants, ... purple colouration in shoot axis surface, wrinkling of cereal grains and inhibition of cell division.

Nitrogen is an essential constituent of all : (1) Fats (2) Proteins (3) Vitamins (4) Carbohydrates

Description : Nitrogen is an essential constituent of all : (1) Fats (2) Proteins (3) Vitamins (4) Carbohydrates

Last Answer : Proteins

Can enzymes slow down chemical reactions?

Description : Can enzymes slow down chemical reactions?

Last Answer : Need answer

What is an example enzymes control chemical reactions?

Description : What is an example enzymes control chemical reactions?

Last Answer : Feel Free to Answer

Arrhenius equation K = Ae-E a / R T In some reactions, Rate of reaction is directly proportional to. Concentration of catalyst Catalyst used in Bio-Chemical reactions is called. Enzymes Reactions catalyzed by light are called as. Photo catalyzed or Photosensitised reactions

Description : Arrhenius equation K = Ae-E a / R T In some reactions, Rate of reaction is directly proportional to. Concentration of catalyst Catalyst used in Bio-Chemical reactions is called. Enzymes Reactions catalyzed by light are called as. Photo catalyzed or Photosensitised reactions

Last Answer : Define order of reaction

Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C(B) Most of the enzyme catalysed reactions involve at least two substrates (C) Enzymes help in increasing the activation energy of the reaction (D) Equilibrium concentrations in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Description : Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C ... in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Last Answer : (C) Enzymes help in increasing the activation energy of the reaction

Enzymes are organic catalysts used in the __________ reactions. (A) Chemical (B) Biochemical (C) Photochemical (D) Electrochemical

Description : Enzymes are organic catalysts used in the __________ reactions. (A) Chemical (B) Biochemical (C) Photochemical (D) Electrochemical

Last Answer : (B) Biochemical

Explain how enzymes speed up chemical reactions.

Description : Explain how enzymes speed up chemical reactions.

Last Answer : To put it simply, enzymes speed up metabolic reactions by lowering energy barriers. They are catalysts, chemical beings, that are not consumed yet speed up reactions, but still provide energy. In ... , and other molecules have lots of free energy and their breakdown is very high in potential.

Which one of the following pairs of chemical substances, is correctly categorised? (a) Calcitonin and thymosin - Thyroid hormones (b) Pepsin and prolactin - Two digestive enzymes secreted in stomach (c) Troponin and myosin - Complex proteins in striated muscles (d) Secretin and rhodopsin - Polypeptide hormones

Description : Which one of the following pairs of chemical substances, is correctly categorised? (a) Calcitonin and thymosin - Thyroid hormones (b) Pepsin and prolactin - Two digestive enzymes secreted in ... and myosin - Complex proteins in striated muscles (d) Secretin and rhodopsin - Polypeptide hormones

Last Answer : (c) Troponin and myosin - Complex proteins in striated muscles

A metabolic pathways is a (A) Route taken by chemicals (B) Sequence of enzyme facilitated chemical reactions (C) Route taken by an enzyme from one reaction to another (D) Sequence of origin of organic molecules

Description : A metabolic pathways is a (A) Route taken by chemicals (B) Sequence of enzyme facilitated chemical reactions (C) Route taken by an enzyme from one reaction to another (D) Sequence of origin of organic molecules

Last Answer : Answer : B

Pick out the correct statement. (A) In catalytic reactions, the catalyst reacts with the reactants (B) A catalyst initiates a chemical reaction (C) A catalyst lowers the activation energy of the reacting molecules (D) A catalyst cannot be recovered chemically unchanged at the end of the chemical reaction

Description : Pick out the correct statement. (A) In catalytic reactions, the catalyst reacts with the reactants (B) A catalyst initiates a chemical reaction (C) A catalyst lowers the activation energy of ... molecules (D) A catalyst cannot be recovered chemically unchanged at the end of the chemical reaction

Last Answer : (C) A catalyst lowers the activation energy of the reacting molecules

what enzyme is needed to catalyze synthesis of mRNA?

Description : what enzyme is needed to catalyze synthesis of mRNA?

Last Answer : Helicase. It breaks the hydrogen bonds holding the complementary bases of DNA together (A with T, C with G). The separation of the two single strands of DNA creates a Y' shape called a replication fork ... , is the leading strand. The other oriented in the 5' to 3' direction is the lagging strand.

What term refers to proteins that speed up chemical reactions in loving things?

Description : What term refers to proteins that speed up chemical reactions in loving things?

Last Answer : Need answer

Metabolism is carried out by a large class of proteins that decrease the activation energy required for chemical reactions inside a cell. Therefore they only facilitate reactions that would naturally occur at a much slower rate. What is the name of these proteins that speed up biochemical reactions?

Description : Metabolism is carried out by a large class of proteins that decrease the activation energy required for chemical reactions inside a cell. Therefore they only facilitate reactions that would naturally occur at a much slower rate. What is the name of these proteins that speed up biochemical reactions?

Last Answer : Enzymes

Why is moist heat more versatile than dry heat? a. It More Easily Penetrates Materials. b. Water Molecules Conduct Heat Better Than Air c. It Denatures Proteins By Changing Their Structure And Chemical Bonds d. A-C Are Correct

Description : Why is moist heat more versatile than dry heat? a. It More Easily Penetrates Materials. b. Water Molecules Conduct Heat Better Than Air c. It Denatures Proteins By Changing Their Structure And Chemical Bonds d. A-C Are Correct

Last Answer : d. A-C Are Correct

What chemical functionality do unsaturated fatty acid contain that saturated fatty acids do not?

Description : What chemical functionality do unsaturated fatty acid contain that saturated fatty acids do not?

Last Answer : ANSWER: DOUBLE BONDS or CARBON-CARBON DOUBLE BONDS 

Do fats and water soluble molecules such as sugars get absorbed from the intestine directly into the blood?

Description : Do fats and water soluble molecules such as sugars get absorbed from the intestine directly into the blood?

Last Answer : The simple sugars do but not the fats. The presence of fat inthe small intestine produces hormones that stimulate the release ofpancreatic lipase from the pancreas and bile from the liver whichhelps in the emulsification of fats for absorption as fattyacids.

Only two of the following Statements accurately describe what happens in the mouth. 1. 2. 3. 4. Amylase breaks down large starch molecules into smaller maltose molecules. Chewing increases the surface area of food for digestion. Saliva emulsifies fats into smaller droplets. Teeth breakup large insoluble molecules into smaller soluble molecules which statements are correct? (a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4

Description : Only two of the following Statements accurately describe what happens in the mouth. 1. 2. 3. 4. Amylase breaks down large starch molecules into smaller maltose molecules. Chewing increases the surface area of food for digestion. Saliva emulsifies ... ? (a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4

Last Answer : (a) 1 and 2

Does anyone have any ideas for experiments I can do involving Food Chemistry (proteins, carbs, fats)?

Description : Does anyone have any ideas for experiments I can do involving Food Chemistry (proteins, carbs, fats)?

Last Answer : Brewing beer

Name the main organs of the human digestive system. Also name the associated glands. (b) How do carbohydrates, fats and proteins get digested in human beings -Science

Description : Name the main organs of the human digestive system. Also name the associated glands. (b) How do carbohydrates, fats and proteins get digested in human beings -Science

Last Answer : (a) The various organs of the human digestive system are mouth, oesophagus, stomach, small intestine and large intestine. The glands associated with the human digestive system are salivary ... the intestinal juice completes the process of digestion of proteins thus converting it into amino acids.

Assertion : Carbohydrate are most suitable for the production of energy in the body than proteins and fats. Reason : Carbohydrates can be stored in ti

Description : Assertion : Carbohydrate are most suitable for the production of energy in the body than proteins and fats. Reason : Carbohydrates can be stored in ti

Last Answer : Assertion : Carbohydrate are most suitable for the production of energy in the body than proteins and ... D. If both Assertion & Reason are false.