T/F A velocity curve (V vs. [S]) for a typical allosteric enzyme will be a sigmoid curve
Answers
True. A velocity curve for a typical allosteric enzyme will exhibit a sigmoidal (S-shaped) curve when plotted against the substrate concentration ([S]). This sigmoidal shape is a characteristic feature of allosteric enzymes due to their regulatory mechanisms.
Allosteric enzymes have multiple binding sites, including both active sites for substrate binding and allosteric sites for regulatory molecule binding. When the regulatory molecule binds to the allosteric site, it induces conformational changes in the enzyme's active site, affecting its catalytic activity.
As the substrate concentration increases, the binding of substrate molecules to the active site leads to a cooperative effect. This means that the binding of one substrate molecule increases the likelihood of subsequent substrate molecules binding to the active sites. As a result, the enzyme's velocity (V) increases significantly over a narrow range of substrate concentrations, leading to the steep portion of the sigmoidal curve.
Eventually, as the substrate concentration continues to increase, the active sites become saturated, and the enzyme reaches its maximum velocity (Vmax). At this point, the velocity curve levels off, reaching a plateau on the sigmoidal curve.
Overall, the sigmoidal velocity curve of allosteric enzymes reflects their cooperative behavior and regulation by allosteric molecules, allowing for fine-tuned control of enzymatic activity in response to changing substrate concentrations.
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Related Questions
Why is rust formed on iron
Answers
A volume current density is given in cylindrical coordinates by NP) up ſ(p) = 10 2 (A/m) Find H everywhere, using the integral form of Ampere's Law
Answers
H everywhere is 20π p A/m in the azimuthal direction, where p is the radial coordinate in cylindrical coordinates.
The integral form of Ampere's Law relates the magnetic field H to the current passing through a closed loop. In cylindrical coordinates, the current density is given by J(r, θ, z) = N·P(r)·uϕ(θ), where N is the number of turns per unit length, P(r) is the volume current density, and uϕ(θ) is the unit vector in the azimuthal direction.
To find H everywhere, we consider a closed loop in the azimuthal direction (ϕ) at a fixed radial distance p. Along this loop, the length element dl is in the azimuthal direction, and the magnetic field H is also in the azimuthal direction.
Applying Ampere's Law, the integral of H·dl over the closed loop equals μ0 times the total current enclosed by the loop. Since the current is uniform and flowing in the azimuthal direction, the total current enclosed is J·2πp, where J is the volume current density and 2πp is the path length along the loop at radial distance p.
Setting up the integral and solving, we have:
H·2πp = μ0·J·2πp
H = μ0·J = μ0·N·P(r) = 20πp A/m.
Therefore, H everywhere in the azimuthal direction is given by H = 20πp A/m.
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You are gardening in the peak of summer, it hasn't rained in a week, and your plants are looking rough. You decide to water the plants for an hour. The next day you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. With what you know from class, please try and explain what is happening to your plants.
Answers
In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.
However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.
It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.
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Michelle is going to vacation in a location on the globe that is currently experiencing summer and daylight. According the model below, which location could Michelle be visiting? Location A - Axis Sun Location C Location B Equator Location D A) Location A B) Location B ) Location ( D) Location D
Answers
:)
For a second order system with damping at least two of the following three frequencies are the same: the ringing frequency, natural frequency and resonant frequency
a) Yes
b) No
Answers
Yes for a second order system with damping the ringing frequency, natural frequency and resonant frequency are same .
How are these frequencies same or equal ?When the structure's damping is very low, the resonance frequency is almost equal to the structure's natural frequency. However, when the structure's damping is high, the resonance frequency is lower than the natural frequency, and the two are incompatible. Because the response within the resonant band range is high, it is vital to avoid not only the single frequency of the resonant peak, but also the resonant band near the resonant peak, corresponding to the intermediate frequency region in the figure above, while building the system. It must not be influenced by the usual operation of its own equipment, as well as the structure and excitation of other equipment.Resonance can induce lifting beam collapse, ground resonance, machine damage, and infrared damage, however vibration is not always destructive.What is natural frequency ?The natural frequency is a feature of every system. The natural frequency of a system is critical, it is the frequency that the system will follow if it is given a tiny fluctuation. Earthquakes and winds, for example, can destroy objects with the same natural frequency as the event itself. Natural frequency and resonance are inextricably linked.What is resonant frequency ?The frequency at which it swings is the system's inherent frequency. Consider a periodic external force acting on the system. The frequency of this external force is not always the same as the inherent frequency of the system. This force will attempt to oscillate the system to its frequency. This results in an uneven pattern. The system absorbs some of the external force's energy. Consider the instance where the frequencies are the same. In this situation, the pendulum will swing freely, absorbing the most energy from the external force. This is known as resonance.Can learn more about natural and resonant frequency from https://brainly.com/question/3172219
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Write three laws of refraction by a lens.
Answers
Answer:
1.The incident Ray,the refracted Ray and the normal at the point of incidence,all three lies in the same plane
2.the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a pair
What is the efficiency of a 10 hp DC motor that draws 31 amps at 300 volts?
Answers
The efficiency of a 10 hp DC motor that draws 31 A at 300 volts is equal to 80 %.
How to calculate the efficiency of a motor?The efficiency of a motor can be calculated from the ratio of the mechanical power output to the electric power input to the motor.
Given the horsepower of the DC motor = 10 hp
Conver the hp into watt:
1hp = 745.7 W
Output power = 10 hp = 10× 745.7 = 7457 W
Input power = 31 × 300 = 9300 W
The efficiency of the motor = Output/Input ×100
Efficiency = (7457/9300) ×100 = 80 %
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An ideal gas is enclosed in a piston-cylinder apparatus with the piston being freely movable. Given that LaTeX: \DeltaΔE is positive and LaTeX: \DeltaΔH is negative following a process, ____ the system absorbs heat and expands during the process. the system absorbs heat and contracts during the process. the system loses heat and expands during the process. the system loses heat and contracts during the process. the system loses heat but neither expands nor contracts during the process.
Answers
Clear question is;
An ideal gas is enclosed in a piston-cylinder apparatus with the piston being freely movable. Given that ΔE is positive and ΔH is negative following a process,
pick one
A) the system absorbs heat and expands during the process.
B) the system absorbs heat and contracts during the process.
C) the system loses heat and expands during the process.
D) the system loses heat and contracts during the process.
E) the system loses heat but neither expands nor contracts during the process.
Answer:
Option A is correct.
Explanation:
In thermodynamics, when the change in energy which is ΔE of a system is positive, it means that the system is undergoing an endothermic process. An endothermic process is simply one where heat is absorbed from the surroundings
Now, when change in enthalpy which is ΔH is negative, it means that it's an exothermic reaction. Exothermic means it releases heat to the surroundings. This means work is positive because the system does work on the surroundings. Thus it will expand.
So the correct answer is;
heat is absorbed from the surroundings and will expand during the process.
1.5V battery is connected to a bulb whose resistance is 1.20hm how, much elections have the battery per minute?
Answers
The battery would have approximately 4.68 x 10^20 electrons flow through it per minute when connected to a 1.20 ohm bulb.
To calculate the number of electrons that flow through the circuit per minute, we need to use the formula:
I = V/R
where I is the current, V is the voltage of the battery, and R is the resistance of the bulb.
In this case, the voltage of the battery is 1.5V, and the resistance of the bulb is 1.20 ohms. Plugging these values into the formula, we get:
I = 1.5V / 1.20 ohms
I = 1.25 amps
Now, we need to convert this current to the amount of electrons that flow through the circuit per minute. To do this, we need to use the formula:
n = I*t/q
where n is the number of electrons, I is the current, t is the time in seconds, and q is the charge of an electron (which is 1.602 x 10^-19 coulombs).
We can convert the time from minutes to seconds by multiplying by 60. So, if we assume that the battery is connected to the circuit for one minute, we can calculate the number of electrons as:
n = 1.25 amps * (60 seconds) / (1.602 x 10^-19 coulombs)
n = 4.68 x 10^20 electrons
Therefore, the battery would have approximately 4.68 x 10^20 electrons flow through it per minute when connected to a 1.20 ohm bulb.
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I will give brainliest to whoever answers this in less than 10 minutes.
Answers
Answer:
D) No, because of the way work is defined
Explanation:
There is no motion in the direction of the force, then no work is done by that force. ... But the work done on the box is zero since by moving in a straight line at constant speed, its energy is remaining the same.
Hope it helps
Please mark me as the brainliest
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Raul is riding on a train that is moving at a speed of 20.0 meters per second. Kirstin is sitting across from him, and there is a distance of 1.8 meters between them. If Raul and Kirstin do not leave their seats, which of the following graphs shows the distance from Raul to Kirstin over the first 6 seconds of the trip?
Answers
Answer:
C
Explanation: Study Island
Answer:
The Straight Line Graph
Explanation:
8. If horizontal velocity is 5 m/s, and vertical velocity is 8 m/s, what is the
magnitude of the resultant velocity?*
O
4.9 m/s
O
3.5m/s
9.4m/s
O 13m/s
Answers
Answer:
9.4
Explanation:
magnitude is the sum of the squares.
\(\sqrt{5^2+8^2} =9.4339\\\)
If you are given horizontal and vertical components, treat those as the rise and run of a triangle, the rise of 8 with a run of 5 and you want to find the hypotenuse.
How do you find the long side of a triangle?
7. A 1000-kg car comes to a stop without skidding. The car's brakes do 50,000 J of work
to stop the car. Which of the following was the car's velocity when the brakes were
initially applied?
Answers
Answer:
10 m/s
Explanation:
Identify each lettered part of the circuit, and explain what each part does.
(PLEASE HELP!) 20 POINTS!!!
Answers
The question is incomplete but the parts of the electric circuit have been outlined below.
What are the components of an electric circuit?An electric circuit is a path through which electric current flows, and typically consists of several components, including:
Power source: A device that provides the electric energy needed for the circuit to function, such as a battery, generator, or power supply.
Conductors: Materials that allow electric current to flow through them easily, such as copper wires.
Load: The device or component in the circuit that consumes or uses the electric energy, such as a light bulb, motor, or resistor.
Switch: A device that can be used to open or close the circuit, allowing or blocking the flow of electric current.
Control elements: Devices that can regulate or control the flow of electric current, such as diodes, capacitors, and transistors.
Connectors: Materials or devices used to connect the components of the circuit together, such as wire nuts, solder, or connectors.
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at an instant when the resistor is dissipating electrical energy at a rate of 0.850 j/sj/s , what is the speed of the bar?
Answers
At an instant when the resistor is dissipating electrical energy at a rate of 0.850 j/s , the speed of the bar is 25.88m/s
What is Faraday's law?The fundamental property of electromagnetism known as Faraday's law, commonly referred to as "Faraday's law," aids in our ability to predict how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF). Electromagnetic induction is the term for this phenomenon.
The electromagnetic induction rules were put forth by Michael Faraday in 1831. The observation or findings of Faraday's experiments are known as the law of electromagnetic induction or Faraday's law. To understand electromagnetic induction, he conducted three key experiments.
There are two laws in Faraday's Laws of Electromagnetic Induction. The induction of emf in a conductor is described by the first law, and the emf that is created in the conductor is quantified by the second law.
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the smooth and accurate execution of movement as conceived in the mind and executed by the body parts
Answers
The smooth and accurate execution of movement as conceived in the mind and executed by the body parts describes ; The central nervous system.
Although your question is incomplete an answer is provided which falls within the scope of your question
The human brain receives, interprets and transfer signals it deduces from the impulses it received to the various sense organs ( body parts ) for execution. and this process involves coordination within the nervous system.
The central nervous system is a category of the Nervous system of a human and it consists of the spinal cord and the human brain. and the peripheral nervous system
Hence we can conclude the smooth and accurate execution of movement as conceived in the mind and executed by the body parts describes, The central nervous system.
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A 1230 kg car accelerates at a rate of 4 how much force is involved
Answers
The force applied on the car of mass 1230 Kg is equal to 4920 N.
What is acceleration?Acceleration can be defined as the change in the velocity of a body with respect to time. The acceleration of a body is a vector parameter because it has magnitude and direction.
According to Newton's 2nd law, the force (F) is the mass times of acceleration (a) of a body.
F = ma
And, a = F/m
Therefore, acceleration (a) is inversely proportional to the mass(m).
Given, the acceleration of the car, a = 4 m/s²
The value of the mass of the car, m = 1230 Kg
The force applied on the car, F = ma = 1230 ×4 = 4920 N
Therefore, the force of 4920 N is involved to accelerate the car.
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A positive test charge of 8.5 × 10 negative 7 Columbus experiences a force of 4.1 × 10 negative 1 N calculate the electric field created by the positive test charge also specify the direction of the electric field with respect to the force
Answers
Explanation:
direction of electric field is same as that of force experienced by the test charge
Answer:
Comments/Reasoning Calculations/Results
I used the equation for calculating electric field strength. E = F/q
I substituted the values of F and q in the equation to get
this value of E E= (4.1 x10-1)/(8.5 x10-7)
The electric field strength is 4.8 × 105 newtons/coulomb
Explanation:
edmentum sample answer
Which position in this magnetic field where a magnetic object would feel the strongest force?
Answers
Option B. The strongest force on a magnetic item in a magnetic field will be near the poles of the field, where the lines of magnetic flux are most concentrated.
What is magnetic field?The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field. a diagram that shows the magnetic field and how a magnetic force is distributed inside and outside of a magnetic substance.
A compass, a motor, the magnets that hold items in refrigerators, railroad tracks, and modern roller coasters are examples of devices that use magnetic force. A magnetic field is created by all moving charges, and any charges that move across its regions are subject to a force.
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Find the Height
*must show work*
Answers
Answer:
h=103.528m
Explanation:
I have explained everything in the attached photo. make sure to ask me questions if you don't understand any part.
find the weight of an astronaut whose mass is 75 kg on the moon
Answers
We already know the mass is 75kg.
The gravitational field strength on the moon is 1.6N. To find out the weight, we can substitute these values in to the formula.
Weight=75 X 1.6
Weight= 120N
Weight is measured on Neutons as it is a force.
Which city is known as the richest square mile on earth?.
Answers
Answer:
Central City is the county seat and the most populous municipality of Gilpin County. The city is a historic mining settlement founded in 1859 during the Pike's Peak Gold Rush and came to be known as the "Richest Square Mile on Earth".
The cabin of a small freight elevator is secured to a
motor by a cable and is moving upward while slowing
down. There is no contact between the cabin and the
elevator shaft. Ignore air resistance.
Answers
The motor is providing the force necessary to move the cabin of the freight elevator upward and slow it down.
What is elevator?An elevator is a type of vertical transportation device designed to move people and goods from one floor to another within a building or structure. It is typically composed of a cab, a motor, a counterweight, cables, and other components. Elevators are the most common form of vertical transportation for multi-story buildings, and are used for both commercial and residential buildings.
The cable connecting the motor to the cabin is providing the mechanical connection that allows the motor to exert the force necessary to move the cabin. Since there is no contact between the cabin and the elevator shaft, the cabin is being accelerated and decelerated solely due to the force exerted by the motor. Air resistance has no effect on the motion of the cabin since it is not in contact with the shaft.
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a car moving at constant speed rounds a curve as shown (the view is from above). at the point pictured, is there a force of friction acting on the car? hint: think of all the forces acting on the car. what direction do they have to add up to? a. no b. yes, pointing backwards c. yes, pointing left d. yes, pointing right
Answers
Yes, there is a force of friction acting on the car at the point pictured. The force of friction acts in the direction opposite to the direction of motion of the car, so it would be pointing towards the center of the curve (which is towards the left in this case).
What is Constant Speed?
Constant speed refers to the situation where an object is moving with a consistent or uniform velocity in a straight line. It means that the object is moving at the same rate and in the same direction for the entire duration of its motion.
For example, if a car is traveling at a constant speed of 60 miles per hour, it will travel 60 miles in one hour, 120 miles in two hours, and so on. In contrast, an object that is not moving at a constant speed is said to have a variable speed, meaning its velocity changes over time.
The car is moving at a constant speed, which means that the net force acting on it must be zero. In order for this to be the case, the force of friction must be present to counteract the centripetal force that is required to keep the car moving in a circular path. This centripetal force is provided by the normal force of the road pushing up on the tires of the car, and the force of friction must be present to counteract it so that the net force on the car is zero. Therefore, the correct answer is (c) yes, pointing left.
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An object that attracts other objects made
of magnetic materials is a(n)
Answers
An object that attracts other objects made of magnetic materials is a magnet.
What is magnet?A magnet is an object which produces a magnetic field. This magnetic field is in the form of lines running from the positive to the negative charged side of the object. It is invisible but forms the characteristic of a magnet.
Magnet creates a force that pulls other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. Magnets are repelled when they are like. When unlike, they are attracted.
Thus, an object that attracts other objects made of magnetic materials is a magnet.
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help will mark as brainliest
Answers
Answer: i guess d is the correct answer
Answer:
D
Explanation:
I used this and passed my test! good luck!
How does a presidential veto affect a bill passed by Congress?
Responses
A It changes a bill passed by Congress to suit the president, who will send it back to Congress to pass or reject with a simple majority vote.
B It delays a bill passed by Congress from becoming law for one full year, after which the president must sign the bill into law.
C It passes a bill approved by Congress and becomes law as soon as the Supreme Court rules it to be constitutional.
D It kills a bill passed by Congress unless Congress votes to override the veto with a two-thirds majority in each house.
Answers
Answer:
If the President vetoes the bill it is sent back to Congress with a note listing his/her reasons. The chamber that originated the legislation can attempt to override the veto by a vote of two-thirds of those present. If the veto of the bill is overridden in both chambers then it becomes law.
Explanation:
Use this information to answer Question 9-12: -3 Consider a step pn junction made of silicon. The doping densities in the p- and n-sides are N₁ = 5 × 10¹5 cm and ND = 1 × 10¹4 cm-3, respectively. Find the built-in potential in unit of V. Answers within 5% error will be considered correct. 0.578
Answers
The built-in potential of a step PN junction made of silicon, with doping densities of N₁ = 5 × 10¹⁵ cm⁻³ in the p-side and ND = 1 × 10¹⁴ cm⁻³ in the n-side, is approximately 0.578 V.
The built-in potential (Vbi) of a PN junction is determined by the difference in the Fermi energy levels between the p-side and n-side. It can be calculated using the formula:
Vbi = (kT/q) * ln(N₁ * ND / ni²),
where k is Boltzmann's constant, T is the temperature in Kelvin, q is the charge of an electron, N₁ and ND are the doping densities in the p-side and n-side respectively, and ni is the intrinsic carrier concentration.
Given the doping densities N₁ = 5 × 10¹⁵ cm⁻³ and ND = 1 × 10¹⁴ cm⁻³, and assuming room temperature T = 300K, we can calculate the built-in potential using the formula. However, the intrinsic carrier concentration (ni) is not provided in the question, so we cannot calculate the exact value of Vbi. The given value of 0.578 V is an approximation within a 5% error margin.
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What is the height of the cannon before it is launched, at t=0? Remember to include units.
Answers
The height of the cannon before it is launched, at t=0, is 58 m.
Model for the motion of the cannon ball
The equation of motion of the cannon ball is given as;
h(t) = -4.9t² + 19.8t + 58
Height of the cannon at time, t = 0The initial height of the cannon before it was launched is calculated as follows;
h(0) = -4.9(0) + 19.8(0) + 58
h(0) = 58 m
Thus, the height of the cannon before it is launched, at t=0, is 58 m.
Complete question is below:
The equation that models the path of a cannon ball is h(t) = -4.9t² + 19.8t + 58. What is the height of the cannon before it is launched, at t=0? Remember to include units.
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What types of evidence are used to support The Big Bang theory?
Answers
Answer:
Hubble's Discovery
cosmic microwave background radiation
Answer:
Three main pieces of evidence for the Big Bang theory are the red-shift of light, cosmic background radiation and types of elements.
Explanation:
Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.