Description : Why potential energy is stored in the form of H ion gradient -Biology
Last Answer : answer:
Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose
Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose
Description : In which form is the supplied heat energy stored during change in temperature of substance? (1) Heat energy (2) Kinetic energy (3) Potential energy (4) Both kinetic and potential energy
Last Answer : (2) Kinetic energy Explanation: Temperature is used as a measure for heat in an object by measuring the amount of kinetic energy in the molecules that make up the object. It is a measure of the average ... from the heat source to the molecules, and it can also change its form from heat to movement.
Description : Energy is stored in a flywheel in the form of (A) Heat energy (B) Solar energy (C) Kinetic energy (D) Potential energy
Last Answer : (C) Kinetic energy
Description : The work is stored in an inductor in form of.......: a. Elastic potential energy b. Kinetic energy c. Potential energy d. Gravitational potential energy
Last Answer : b. Kinetic energy
Description : Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy
Last Answer : ANSWER: Z -- BOTH KINETIC AND POTENTIAL ENERGY
Last Answer : Kinetic energy
Description : The equation of a curve passing through `(2,7/2)` and having gradient `1-1/(x^2)` at `(x , y)` is (a) `( b ) (c) y=( d ) x^(( e )2( f ))( g )+x+1( h )
Last Answer : The equation of a curve passing through `(2,7/2)` and having gradient `1-1/(x^2)` at `(x , y)` is (a) `( b ) ... (2)+3` C. `xy=x+5` D. `xy=x^(2)+x+1`
Description : A key process in metabolism is the transport of hydrogen ions (H+) across a membrane to create a concentration gradient. Explain which arrangement of hydrogen ions (unequal concentration or equal concentration) allows work to be done.
Last Answer : It is clear that an unequal concentration, not an equal one, would be the only possibility that work will be done; the unequal concentration of hydrogen ions would allow them to flow across the membrane and increase not only entropy but also work.
Description : A potentiometer circuit is setup as shown. The potential gradient across the potentiometer wire is `k "volt"//cm` and the ammeter present in the circu
Last Answer : A potentiometer circuit is setup as shown. The potential gradient across the potentiometer wire is `k "volt"//cm` and ... (2)` D. `kl_(1)"and"kl_(2)`
Description : A potentiometer having the potential gradient of `2 mV//cm` is used to measure the difference of potential across a resistance of `10 ohm`. If a lengt
Last Answer : A potentiometer having the potential gradient of `2 mV//cm` is used to measure the difference of potential across a ... `) A. 1 B. 2 C. 5 D. 10
Description : Potentiometer wire of length `1 m` is connected in series with `490 Omega` resistance and `2 V` battery. If `0.2 mV/cm` is the potential gradient, the
Last Answer : Potentiometer wire of length `1 m` is connected in series with `490 Omega` resistance and `2 V` battery. If ... 7.9Omega` C. `5.9Omega` D. `6.9Omega`
Description : The action potential of a neuron a. is initiated by efflux of Na+ b. is terminated by efflux of K+ c. declines in amplitude as it moves along the axon d. results in a transient reversal of the ... the cell membrane e. is not associated with any net movement of Na+ or K+ across the cell membrane
Last Answer : is terminated by efflux of K+
Description : The gradient of the magnetic vector potential can be expressed as a) –με dV/dt b) +με dE/dt c) –με dA/dt d) +με dB/dt
Last Answer : a) –με dV/dt
Description : The electric field intensity is the negative gradient of the electric potential. State True/False. a) True b) False
Last Answer : a) True
Description : The relation between vector potential and field strength is given by a) Gradient b) Divergence c) Curl d) Del operator
Last Answer : a) Gradient
Description : Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on (a) membrane potential (b) accumulation of Na+ ions (c) accumulation of K+ ions (d) proton gradient.
Last Answer : (d) proton gradient
Description : The movement of water, from one cell of cortex to adjacent one in roots, is due to (a) accumulation of inorganic salts in the cells (b) accumulation of organic compounds in the cells (c) water potential gradient (d) chemical potential gradient.
Last Answer : (c) water potential gradient
Description : Define potential gradient. State its S.I. unit.
Last Answer : Definition: - Potential gradient is defined as the fall of potential per unit length of potentiometer wire. OR P.G. = Potential / Length S.I. Unit :- V/m.
Description : What factors do the gravitational potential energy stored between an object and earth depends on?
Last Answer : Feel Free to Answer
Description : Tides in the sea have stored in them : (1) Hydraulic energy (2) Kinetic energy (3) Gravitational potential energy (4) A combination of all the above three forms of energy
Last Answer : (3) Gravitational potential energy Explanation: Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation ... is channeled into a large basin behind the darn, holding a large amount of potential energy.
Description : What happens when a chemical bond is formed? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor ... as potential energy. Upon the breaking of these bonds the energy is released thereby creating usable energy.
Last Answer : Silver nitrate solution is kept in brown bottles in laboratory because - (1) it reacts with ordinary white bottles (2) brown bottles stops the passage of light through it (3) brown bottles do not react with it (4) brown bottles react with it
Description : Energy stored in a coal is - (1) kinetic energy (2) potential energy (3) chemical energy (4) nuclear energy
Last Answer : (3) chemical energy Explanation: Chemical energy is stored in coal. Coal is a Hydrocarbon. When coal is burnt its chemical energy comes out in the form of light and heat energy which result in formation of vapors of Carbon Dioxide (CO2) and water(H2O).
Description : The energy stored in a watch spring is (1) Kinetic energy (2) Potential energy (3) Heat energy (4) Chemical energy
Last Answer : (2) Potential energy
Description : In a rechargeable cell what kind of energy is stored within the cell? (1) Electrical energy (2) Potential energy (3) Chemical energy (4) Kinetic energy
Last Answer : (3) Chemical energy Explanation: In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. A battery is ... of two half-cells connected in series by a conductive electrolyte containing anions and cations.
Description : The energy stored in a dam is------? A. Kinetic energy B. Electrical energy C. Potential energy (Answer) D. None of these
Last Answer : C. Potential energy (Answer)
Description : Energy stored in a 2000 mF capacitor charged to a potential difference of 10 V is A. 0.12 J B. 1.3 J C. 0.10 J D. 3 J
Last Answer : 0.10 J
Description : Find the energy stored by the capacitor 3F having a potential of 12V across it. a) 432 b) 108 c) 216 d) 54
Last Answer : c) 216
Description : _________ is the energy stored within a body or substance by virtue of the activity and configuration of its molecules. a. Internal Energy b. External Energy c. Kinetic Energy d. Potential Energy
Last Answer : Internal Energy
Description : The energy that stored in a system as a result of its position in the earth’s gravitational field a. elastic energy b. kinetic energy c. potential energy d. flow energy
Last Answer : potential energy
Description : Suppose a crane lifts a 900 kilogram wrecking ball 12 meters above a concrete slab. 105,840 Joules of potential energy are stored in the wrecking ball. Now the ball is dropped. When the ball is 6 meters above the concrete slab, what is it's potential energy in Joules?
Last Answer : ANSWER: 52,920 JOULES
Description : The energy stored in a watch spring is (1) kinetic energy (2) potential energy (3) heat energy (4) chemical energy
Last Answer : Chemical energy
Last Answer : Gravitational potential energy
Description : When any solution passess through a cation exchange resin that is in acidic form, H ion of the resin is replaced by cations of the solution. A solutio
Last Answer : When any solution passess through a cation exchange resin that is in acidic form, H ion ... D. tetraaquadichloro chromium (III) chloride dihydrate.
Description : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion concentration C-Temperture
Last Answer : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion ... A B. B,C C. A and C D. A,B,C
Description : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :-
Last Answer : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :- A. Arteries and ... and veins and medulla D. Vein and pons and medulla
Description : What will most likely happen is a toxin causes the hydrogen ion pump to stop moving h plus ions outside the mitochondrial membranes of the bird's cells?
Last Answer : Need answer
Description : Chloride shift is (A) H ions leaving the RBC in exchange of Cl- (B) Cl– leaving the RBC in exchange of bicarbonate (C) Bicarbonate ion returns to plasma and exchanged with chloride which shifts into the cell (D) Carbonic acid to the plasma
Last Answer : Answer : C
Description : In the following reaction, Alanine acts as a 3 3 3 3 + + → H H | | H N – – COO —— H N – – COOH C C | | CH CH (A) Acid (B) Base (C) Zwitter ion (D) None of these
Description : The negative logarithm of H+ ion concentration
Last Answer : Ans. Soil pH
Description : The hydronium ion is (a) H+ (b) HO2 (c) H2+ (d) H3O+
Last Answer : Ans:(d)
Description : The N–H bond in the ammonium ion, NH4+, is formed by the overlap of what two orbitals? (a) sp3–sp3 (b) sp3–sp2 (c) sp2–sp2 (d) sp3–s
Last Answer : sp3–s
Description : Why does a H+ ion attacking a carbon-carbon double bond add to the carbon with the least number of substituents? (a) the reaction is resonance stabilized. (b) the hybrid geometry favors this ... tends to attack stable centers of negative charge. (d) a more stable carbonium ion is generated.
Last Answer : a more stable carbonium ion is generated.
Description : In the reaction of ethylene with H2O in the presence of sulfuric acid, which one adds across the double bond first? (a) H+ (b) H. (c) HO– (d) sulfate ion
Last Answer : H+
Description : In the reaction of propene with HCl, H+ ion acts as the : (a) electrophile (b) carbonium ion (c) nucleophile (d) carbanion
Last Answer : electrophile
Description : The concentraction of hydrogen ion (H+ )is denoted by pH.How do you denote concentration of hydrogen ion(OH)?
Last Answer : Ans:The concentration of hydrogen ion (OH) is denoted by poH.
Description : Amiloride has the following effect on urinary cation excretion: A. Decreases both K+ and H+ ion excretion B. Decreases K+ excretion but increases H+ ion excretion C. Increases K+ but decreases Na+ excretion D. Decreases both Na+ and K+ excretion
Last Answer : A. Decreases both K+ and H+ ion excretion
Description : Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells ... d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.
Last Answer : (c) Rods are very sensitive and contribute to daylight vision.