What is light activation ?

What is light activation ?
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Answer :

The matter through which a plane convex light passes through a convex plane is called a light-activated substance.
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Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction

Description : Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction

Last Answer : (4) Reproduction Explanation: Liver is the body’s largest internal organ. It has many functions in the body like it helps in protein synthesis and blood clotting, manufacturing triglycerides and cholesterol, glycogen synthesis, and bile production.

Most of the new atoms formed when atoms in a nuclear reactor capture neutrons without fissioning are: w) fission products x) activation products y) actinides z) lead isotopes

Description : Most of the new atoms formed when atoms in a nuclear reactor capture neutrons without fissioning are: w) fission products x) activation products y) actinides z) lead isotopes

Last Answer : ANSWER: Y -- ACTINIDES

In a spent fuel assembly, the radioactive elements having the longest half-lives are the: w) fission products x) actinides y) activation products z) radioisotopes of lead

Description : In a spent fuel assembly, the radioactive elements having the longest half-lives are the: w) fission products x) actinides y) activation products z) radioisotopes of lead

Last Answer : ANSWER: X -- ACTINIDES

$ Ergosterol is a lipid that changes to vitamins D on activation by UV light. ! Iron is a biochemical compoent of haemoglobin.

Description : $ Ergosterol is a lipid that changes to vitamins D on activation by UV light. ! Iron is a biochemical compoent of haemoglobin.

Last Answer : $ Ergosterol is a lipid that changes to vitamins D on activation by UV light. ! Iron is a biochemical ... is wrong D. If both As and R are wrong.

Vitamin D is manufactured by the activation of ergosterol by U.V light in the (a) liver (b) skin (c) bone (d) muscle

Description : Vitamin D is manufactured by the activation of ergosterol by U.V light in the (a) liver (b) skin (c) bone (d) muscle

Last Answer : Ans:(b)

Photochemical reaction rate does not depend significantly on temperature, because (A) It is a reversible reaction (B) It is an exothermic reaction (C) The energy of reacting molecules exceeds the activation energy by absorption of light (D) None of these

Description : Photochemical reaction rate does not depend significantly on temperature, because (A) It is a reversible reaction (B) It is an exothermic reaction (C) The energy of reacting molecules exceeds the activation energy by absorption of light (D) None of these

Last Answer : (C) The energy of reacting molecules exceeds the activation energy by absorption of light

Pick out the correct statement. (A) Reactions with high activation energies are very temperature sensitive (B) Chemical equilibrium is a static state (C) A photochemical reaction is catalysed by light (D) A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction

Description : Pick out the correct statement. (A) Reactions with high activation energies are very temperature sensitive (B) Chemical equilibrium is a static state (C) A photochemical reaction is catalysed by ... occurs when the energy of the reacting molecule is less than the activation energy of the reaction

Last Answer : (A) Reactions with high activation energies are very temperature sensitive (B) Chemical equilibrium is a static state

Liquid crystal elastomers 4D printing material achieve their activation due to a. Light b. Heat c. Electrical d. All of the above

Description : Liquid crystal elastomers 4D printing material achieve their activation due to a. Light b. Heat c. Electrical d. All of the above

Last Answer : Ans:- d. All of the above

Didn't the inexorable march to cloud-based, metered service actually begin long ago with the development of activation codes and perhaps even of webmail?

Description : Didn't the inexorable march to cloud-based, metered service actually begin long ago with the development of activation codes and perhaps even of webmail?

Last Answer : answer:Software as a Service has been around for a bit (linking wikipedia because it explains it better than I could). Better web technologies and faster internet connections made it possible for companies ... quite as easy to learn, but the communities try to support anyone who takes an interest.

Xm radio activation?

Description : Xm radio activation?

Last Answer : You have to call or go online. You have to have your receiver number etc.. Good luck!

Where is the activation key for Miss Management stored on my computer?

Description : Where is the activation key for Miss Management stored on my computer?

Last Answer : Go to the game and go to option, select properties if the activation code is going to be anywhere it will be there . Tho if you have an account after the new install log in and see if there is a ... and just re download it . Sadly i have no idea of this site you refer to but it may still work

How does the metal activation series help build electromagnets ?

Description : How does the metal activation series help build electromagnets ?

Last Answer : Two electric gates are required for the construction of any type of cell. One causes oxidation and the other oxidation. That is, the tendency of one electron to leave electrons and become ionized ... cathode. Thus the basic idea of making anode and cathode is found through the activation series.

What is activation energy ?

Description : What is activation energy ?

Last Answer : The amount of energy that a part of the reactant gains more than the average energy of the reactant due to mutual collision or any other means and acquires the ability to participate in the reaction is called activation energy.

What is Activity Series ? What is the activation series ?

Description : What is Activity Series ? What is the activation series ?

Last Answer : The series that is obtained by sorting the metals according to their activity is called activation series.

Formation of activation calyx in the egg takes place

Description : Formation of activation calyx in the egg takes place

Last Answer : Formation of activation calyx in the egg takes place A. Before fertilization B. After fertilization C. ... of cleavage D. At the time of amphimixis.

Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broke

Description : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broke

Last Answer : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): ... D. If both Assertion & Reason are False.

Energy for activation of amino acids during proteins synthesis comes from

Description : Energy for activation of amino acids during proteins synthesis comes from

Last Answer : Energy for activation of amino acids during proteins synthesis comes from A. ATP B. GTP C. CTP D. UTP

Name the nondigestive enzyme which helps in activation of trypsinogen

Description : Name the nondigestive enzyme which helps in activation of trypsinogen

Last Answer : Name the nondigestive enzyme which helps in activation of trypsinogen

Name the nondigestive enzyme which helps in activation of trypsinogen

Description : Name the nondigestive enzyme which helps in activation of trypsinogen

Last Answer : Name the nondigestive enzyme which helps in activation of trypsinogen

Which group of periodic table have large negative energy of activation ?

Description : Which group of periodic table have large negative energy of activation ?

Last Answer : Which group of periodic table have large negative energy of activation ? A. Alkali metal B. Zero group C. Halogen family D. Alkaline earth metal

Fight-or - flight reaction causes activation of :

Description : Fight-or - flight reaction causes activation of :

Last Answer : Fight-or - flight reaction causes activation of : A. the parathyroid glands, leading to increased ... to a reduction in the blood sugar levels.

What lowers activation energy in enzymes?

Description : What lowers activation energy in enzymes?

Last Answer : This is the most important concern of Biochemistry, theenzyme-catalyzed reactions. The main factor that lowers theactivation energy, is the catalysis. Catalysts act by reducing theactivation barrier for ... fold rate acceleration occurs only with asmall fraction of the energy of most covalent bonds.

If the activation energy of a biochemical reaction is lowered then?

Description : If the activation energy of a biochemical reaction is lowered then?

Last Answer : What is the answer ?

Do you have to have an activation number for a Visa Gift Card?

Description : Do you have to have an activation number for a Visa Gift Card?

Last Answer : The activation number should be located on your visa gift card or the paperwork it came with.

T-Mobile Micro SIM Card - Ready for Activation?

Description : T-Mobile Micro SIM Card - Ready for Activation?

Last Answer : Micro Sim Cards are ready for easy installation in iPad 3Gs or iPhone 4Gs. When you have or are setting up service with T-Mobile, these cards are necessary to add the device to you plan. ... it is important to ask any questions regarding use because the cards are not returnable once they are cut.

What's the range of the motion activation of Arlo Ultra Cameras?

Description : What's the range of the motion activation of Arlo Ultra Cameras?

Last Answer : Every Arlo security camera has a range of detecting the motion. If we talk about the range of motion detection, then it is nearly 7.6 meters (25 feet) is from the camera position. However, ... The 2-way audio and local storage with MicroSD is available.For more information, visit www camera24x7 com

The activation-synthesis theory says that: (Apex)?

Description : The activation-synthesis theory says that: (Apex)?

Last Answer : C. Dreams are a by-product of brain activity during sleep.

Where can I find the McAfee 25 digit activation code?

Description : Where can I find the McAfee 25 digit activation code?

Last Answer : Open the web browser & visit the link mentioned on the retail card – mcafee.com/activate. Enter the McAfee 25 Digit activation code you got on registered email or type the McAfee activation code given on the backside of the retail card.

Calcium is required for the activation of the enzyme: (A) Isocitrate dehydrogenase (B) Fumarase (C) Succinate thiokinase (D) ATPase

Description : Calcium is required for the activation of the enzyme: (A) Isocitrate dehydrogenase (B) Fumarase (C) Succinate thiokinase (D) ATPase

Last Answer : Answer : D

How many high-energy phosphate bond equivalents are required for amino acid activation in protein synthesis? (A) One (B) Two (C) Three (D) Four

Description : How many high-energy phosphate bond equivalents are required for amino acid activation in protein synthesis? (A) One (B) Two (C) Three (D) Four

Last Answer : Answer : B

Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains

Description : Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains

Last Answer : Answer : C

In the process of activation of amino acids for protein synthesis, the number of high energy phosphate bond equivalent utilised is (A) 0 (B) 1 (C) 2 (D) 4

Description : In the process of activation of amino acids for protein synthesis, the number of high energy phosphate bond equivalent utilised is (A) 0 (B) 1 (C) 2 (D) 4

Last Answer : Answer : C

Activation of IRS-1, PI-3 kinase and GRB2 is brought about by (A) Glucagon (B) Insulin (C) Prolactin (D) IGF-2

Description : Activation of IRS-1, PI-3 kinase and GRB2 is brought about by (A) Glucagon (B) Insulin (C) Prolactin (D) IGF-2

Last Answer : Answer : B

The energy required to start an enzymatic reaction is called (A) Chemical energy (B) Metabolic energy (C) Activation energy (D) Potential energy

Description : The energy required to start an enzymatic reaction is called (A) Chemical energy (B) Metabolic energy (C) Activation energy (D) Potential energy

Last Answer : Answer : C

An enzyme brings about (A) Decrease in reaction time (B) Increase in reaction time (C) Increase in activation energy (D) Reduction in activation energy

Description : An enzyme brings about (A) Decrease in reaction time (B) Increase in reaction time (C) Increase in activation energy (D) Reduction in activation energy

Last Answer : Answer : D

Enzymes increases the rate of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Description : Enzymes increases the rate of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Last Answer : Answer : B

An enzyme promotes a chemical reaction by (A) Lowering the energy of activation (B) Causing the release of heat which acts as a primer (C) Increasing molecular motion (D) Changing the free energy difference between substrate and product

Description : An enzyme promotes a chemical reaction by (A) Lowering the energy of activation (B) Causing the release of heat which acts as a primer (C) Increasing molecular motion (D) Changing the free energy difference between substrate and product

Last Answer : Answer : A

Enzymes increase the rates of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Description : Enzymes increase the rates of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Last Answer : Answer : B

Enzymes accelerate the rate of reactions by (A) Increasing the equilibrium constant of reactions (B) Increasing the energy of activation (C) Decreasing the energy of activation (D) Decreasing the free energy change of the reaction

Description : Enzymes accelerate the rate of reactions by (A) Increasing the equilibrium constant of reactions (B) Increasing the energy of activation (C) Decreasing the energy of activation (D) Decreasing the free energy change of the reaction

Last Answer : Answer : C

Acute pancreatitis is characterised by (A) Lack of synthesis of zymogen enzymes (B) Continuous release of zymogen enzymes into the gut (C) Premature activation of zymogen enzymes (D) Inactivation of zymogen enzymes

Description : Acute pancreatitis is characterised by (A) Lack of synthesis of zymogen enzymes (B) Continuous release of zymogen enzymes into the gut (C) Premature activation of zymogen enzymes (D) Inactivation of zymogen enzymes

Last Answer : Answer : C

Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Description : Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Last Answer : Answer : B

Activation or inactivation of certain key regulatory enzymes is accomplished by covalent modification of the amino acid: (A) Tyrosine (B) Phenylalanine (C) Lysine (D) Serine

Description : Activation or inactivation of certain key regulatory enzymes is accomplished by covalent modification of the amino acid: (A) Tyrosine (B) Phenylalanine (C) Lysine (D) Serine

Last Answer : Answer : D

Which of the following regulates lipolysis in adipocytes? (A) Activation of fatty acid synthesis mediated by CAMP (B) Glycerol phosphorylation to prevent futile esterification of fatty acids (C) Activation of triglyceride lipase as a result of hormone stimulated increases in CAMP levels (D) Activation of CAMP production by Insulin

Description : Which of the following regulates lipolysis in adipocytes? (A) Activation of fatty acid synthesis mediated by CAMP (B) Glycerol phosphorylation to prevent futile esterification of fatty acids (C) ... result of hormone stimulated increases in CAMP levels (D) Activation of CAMP production by Insulin

Last Answer : Answer : C

For the activation of long chain fatty acids the enzyme thiokinase requires the cofactor: (A) Mg++ (B) Ca++ (C) Mn++ (D) K+

Description : For the activation of long chain fatty acids the enzyme thiokinase requires the cofactor: (A) Mg++ (B) Ca++ (C) Mn++ (D) K+

Last Answer : Answer : B

Activation of fatty acids requires all the following except (A) ATP (B) Coenzyme A (C) Thiokinase (D) Carnitine

Description : Activation of fatty acids requires all the following except (A) ATP (B) Coenzyme A (C) Thiokinase (D) Carnitine

Last Answer : Answer : D

The lipoprotein associated with activation of LCAT is (A) HDL (B) LDL (C) VLDL (D) IDL

Description : The lipoprotein associated with activation of LCAT is (A) HDL (B) LDL (C) VLDL (D) IDL

Last Answer : Answer : A

Which of the following statement(s) is/are correct concerning the immunoinflammatory response to shock? a. The anaphylactoxins, C3a and C5a, are products of activation of only the classical pathway of the compliment cascade b. Eicosanoids, such as prostaglandins are stored in platelets and endothelial cells and released in response to inflammatory stimuli c. Thromboxane and PGI2 have similar effects d. Platelet-activating factor can be released by both circulating and fixed tissue cells

Description : Which of the following statement(s) is/are correct concerning the immunoinflammatory response to shock? a. The anaphylactoxins, C3a and C5a, are products of activation of only the classical pathway ... effects d. Platelet-activating factor can be released by both circulating and fixed tissue cells

Last Answer : Answer: d Inflammatory mediators have recently been recognized as playing a significant role in the clinical manifestations and progression of shock and the development ... increased pulmonary vascular resistance, bronchoconstriction, peripheral vasodilatation, and increased vascular permeability

The complement system consists of a series of serum proteins that exist in a quiescent or very low-level state of activation in the uninfected host. Which of the following statement(s) is/are true concerning complement activation? a. The alternate (properdin) pathway of complement activation can occur directly through contact with fungal or bacterial cell wall compounds b. Complement component fragments may serve to decrease vascular permeability c. Excessive complement activation can produce deleterious effects d. Fragments of certain complement components serve as chemoattractants to additional cellular components of the host defense mechanism

Description : The complement system consists of a series of serum proteins that exist in a quiescent or very low-level state of activation in the uninfected host. Which of the following ... certain complement components serve as chemoattractants to additional cellular components of the host defense mechanism

Last Answer : Answer: a, c, d Complement activation can occur through either classic or alternate (properdin) pathways, both of which eventuate in deposition of terminal complement pathway components on the ... and release of lysosomal enzymes that can directly damage certain target tissues, such as the lung

Which of the following statements regarding the complement system are true? a. Complement activation yields products which are directly cytotoxic as well as products which act indirectly via activated leukocytes b. Complement products referred to as anaphylatoxins include C1, C3a, C4a, and C5a c. The principal role of C5a is in bacterial opsonization d. The alternative and classical pathways converge proximal to generating the membrane attack complex (C5b-9)

Description : Which of the following statements regarding the complement system are true? a. Complement activation yields products which are directly cytotoxic as well as products which act indirectly via activated ... and classical pathways converge proximal to generating the membrane attack complex (C5b-9)

Last Answer : Answer: a, d The complement system is composed of two different but linked sequences, the classic and alternative pathways. The pathways involve serum proteins that act to amplify the inflammatory-immune ... the C5 level proximal to generating the membrane attack complex (C5b-9) (Figure 6-3)

Leukocyte activation and adhesion to vascular endothelial cells is a critical step in the inflammatory process. This process is regulated by which of the following molecules? a. The selectins b. The b5 integrins c. The immunoglobulin supergene family d. Nitric oxide e. IL-8

Description : Leukocyte activation and adhesion to vascular endothelial cells is a critical step in the inflammatory process. This process is regulated by which of the following molecules? a. The selectins b. The b5 integrins c. The immunoglobulin supergene family d. Nitric oxide e. IL-8

Last Answer : Answer: a, c, d, e The temporal events that initiate and propagate neutrophil recruitment and inflammation include endothelial cell activation and expression of endothelial-derived ... role in neutrophil recruitment and activation, and the continued propagation of the inflammatory response