Answers
An enzyme that is always produced, regardless of the presence of substrates or the end products, is called a constitutive enzyme.
Constitutive enzymes are continuously synthesized by cells at a constant rate, regardless of the metabolic needs or environmental conditions.
Constitutive enzymes play essential roles in basic cellular functions and metabolic pathways. They are involved in fundamental processes such as energy production, maintenance of cellular structure, and regulation of cellular metabolism. Examples of constitutive enzymes include those involved in glycolysis, the citric acid cycle, and protein synthesis.
Unlike inducible enzymes, which are only synthesized in response to specific signals or the presence of certain substrates, constitutive enzymes are always present in the cell. They are typically produced at a basal level to ensure the constant supply of essential products for cellular processes.
The constitutive production of enzymes allows cells to maintain a stable internal environment and carry out necessary metabolic functions continuously, even in the absence of specific stimuli or substrates.
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Related Questions
In chemical reactions, elements tend to combine with other elements to____ stability and ____ total energy
Answers
Answer:
In chemical reactions, elements tend to combine with other elements to INCREASE_ stability and DECREASE total energy.
Explanation:
The chemical compounds when joining are more stable in external media such as solvents or solutions already formed, although this union with another chemical compound removes total energy from the compound.
Is a Krypton atom still a Krypton atom if you change the number of neutrons?
Group of answer choices
Answers
Answer:
Yes
Explanation:
A krypton atom will remain the same despite changing the number of neutrons they contain.
The neutron is a nuclear particle found within an atom.
Atoms with different number of neutrons belonging to the same element are called isotopes. Only changes to the number of protons changes the elemental designation of an atom. A change in the number of electrons and neutrons does not affect the identity of such atom.Titration of 25.0 mL of an HCl solution of unknown concentration requires 14.8 mL of 0.100 M NaOH. What is the molar concentration of the HCl solution
Answers
M1 = 0.100 M NaOH
V1 = 14.8 mL NaOH
M2 = ?
V2 = 25.0 mL HCl
(0.100 M)(14.8 mL) = M2(25.0 mL)
M2 = 0.0592 M HCl
If a horse is moving and then come to a stop is the horse accelerating or decelerating
Answers
Answer:
decelerating hope this helps❤️
Answer:
Decelerating
Explanation:
It is slowing down, not speeding up.
Magnesium hydroxide reacts with chlorine to form magnesium chloride,
magnesium chlorate and water. How many grams of magnesium hydroxide is
needed to yield 8.00 moles of magnesium chlorate?
77.8 g Mg(OH)2
9178.1 g Mg(OH)2
2799.6 g Mg(OH)2
.823 g Mg(OH)2
How many grams of sodium sulfato pro
Answers
The grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g. None of the options provided match the calculated value of 466.64 g.
To determine the grams of magnesium hydroxide (Mg(OH)2) needed to yield 8.00 moles of magnesium chlorate (Mg(ClO3)2), we need to consider the balanced chemical equation for the reaction between magnesium hydroxide and chlorine.
The balanced equation is as follows:
2 Mg(OH)2 + 6 Cl2 → 2 Mg(ClO3)2 + 2 H2O
From the balanced equation, we can see that 2 moles of Mg(OH)2 react with 6 moles of Cl2 to produce 2 moles of Mg(ClO3)2.
Therefore, the stoichiometric ratio is 2 moles of Mg(OH)2 : 2 moles of Mg(ClO3)2.
To calculate the grams of Mg(OH)2 needed, we can use the stoichiometric ratio and the given moles of Mg(ClO3)2.
Given:
Moles of Mg(ClO3)2 = 8.00 moles
Using the stoichiometric ratio, we have:
8.00 moles Mg(ClO3)2 × (2 moles Mg(OH)2 / 2 moles Mg(ClO3)2) = 8.00 moles Mg(OH)2
To convert moles to grams, we need to multiply by the molar mass of Mg(OH)2.
The molar mass of Mg(OH)2 = (24.31 g/mol) + (2 * 16.00 g/mol) = 58.33 g/mol
Grams of Mg(OH)2 = 8.00 moles Mg(OH)2 × 58.33 g/mol = 466.64 g
Therefore, the grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g.
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The number of moles of Cr deposited by passing 1,5 F electricity in following reaction Cr+3e–– ›cr is
Answers
The number of moles of Cr deposited by 1.5 F of electricity is 0.5 moles
What is electrolysis?The term electrolysis has to do with thee deposition of a solid when a direct current is passed through its solution.
Given the reaction; Cr3+(aq) + 3e ––›Cr(s)
If 3F of electricity is required to deposit 1 mole of Cr
1.5F of electricity is required to deposit 1.5F * 1 mole/3F
= 0.5 moles
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Given: H2 + O 2 → H2O1
the reaction occurs at ST.P a) Balance the chemical equation. (1 pts) b) Calculate the number of moles of the reactants needed to obtain 45 liner of H2O (2 pt) 4) Deduce the volume of the reactants (2 pts)
Answers
a) The balanced chemical equation for the reaction is: 2H₂ + O₂ → 2H₂O
b) the number of moles of O₂ required is approximately 1.004 moles.
c) approximately 45 liters of H₂ and 22.5 liters of O₂ are needed to obtain 45 liters of H₂O.
a) Balancing the chemical equation:
The balanced chemical equation for the reaction is: 2H₂ + O₂ → 2H₂O
b) Calculating the number of moles of the reactants needed to obtain 45 liters of H₂O:
From the balanced equation, we can see that for every 2 moles of H₂O produced, we need 2 moles of H₂ and 1 mole of O₂. Since the stoichiometry is based on moles, we need to convert the given volume of H2O into moles.
To convert volume to moles, we need to use the ideal gas law, PV = nRT. At standard temperature and pressure (STP), the molar volume of an ideal gas is 22.4 liters.
Given that we have 45 liters of H2O, we can calculate the number of moles as follows:
moles of H₂O = (volume of H₂O) / (molar volume at STP)
= 45 liters / 22.4 liters/mol
≈ 2.008 moles of H₂O
Since the stoichiometry of the reaction is 2 moles of H₂O for every 2 moles of H₂, we need an equal number of moles of H₂. Therefore, the number of moles of H₂ required is also approximately 2.008 moles.
For O₂, since the stoichiometry is 1 mole of O₂ for every 2 moles of H₂O, we need half the number of moles of H₂O. Thus, the number of moles of O₂required is approximately 1.004 moles.
c) the volume of the reactants:
Since the stoichiometry of the balanced equation is 2 moles of H₂for every 1 mole of O₂ and 2 moles of H₂O, we can deduce the volume of the reactants based on their molar volumes at STP.
For 2.008 moles of H₂, the volume can be calculated as follows:
volume of H₂= (moles of H₂) * (molar volume at STP)
= 2.008 moles * 22.4 liters/mol
≈ 45 liters of H₂
For 1.004 moles of O₂, the volume can be calculated similarly:
volume of O₂= (moles of O₂) * (molar volume at STP)
= 1.004 moles * 22.4 liters/mol
≈ 22.5 liters of O₂
Therefore, approximately 45 liters of H₂and 22.5 liters of O₂ are needed to obtain 45 liters of H₂O
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Why was meteorology such a late developer compared to other branches of science?
Answers
Answer:
Because of the difficulties of measuring the atmosphere's properties above the earth's reachable surface
Explanation:
Hello,
In this case, meteorology is the branch of science studying the atmosphere in its weather processes and forecasting and it had a late development because of the difficulties of measuring the atmosphere's properties above the earth's reachable surface. We cannot forget that even nowadays, it is very difficult to predict upcoming weathers with the 100 % assurance and with many days in advance.
Best regards.
Meteorology is developed lately as compared to other branches of science due to far away from the reach of humans.
Meteorology is a late developer compared to other branches of science because the measuring the climatic conditions in the atmosphere is difficult and even impossible without the presence of advance technologies.
To find out the weather as well as climatic conditions can't be measured due to it is not reachable to the human like other materials present on the earth surface so we can conclude that meteorology is developed lately as compared to other branches of science due to far away from the reach of humans.
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How does atmospheric pressure affect weather?
Answers
Answer:
Because of pressure
Explanation:
A 25.0 g sample of warm water at 40.0⁰C was added to a 25.0 g sample of water in a Styrofoam coffee cup calorimeter initially at 20.0⁰C. The final temperature of the mixed water and calorimeter was 29.5⁰C. Calculate the heat capacity of the coffee cup calorimeter. The specific heat of water is 4.184 J/g∙⁰C.
a.
0.189 J/⁰C
b.
27.3 J/⁰C
c.
11.0 J/⁰C
d.
116 J/⁰C
Answers
Answer:
2024.70 J
Explanation:
The heat capacity of the coffee cup calorimeter can be calculated using the following formula:
q_calorimeter = q_water + q_water_final
where q_calorimeter is the heat absorbed by the coffee cup calorimeter, q_water is the heat lost by the warm water, and q_water_final is the heat gained by the cold water.
First, calculate q_water:
q_water = m_water * c_water * ΔT
where m_water = 25.0 g is the mass of the warm water, c_water = 4.184 J/g°C is the specific heat of water, and ΔT = (40.0°C - 29.5°C) = 10.5°C is the change in temperature.
q_water = 25.0 g * 4.184 J/g°C * 10.5°C = 1057.35 J
Next, calculate q_water_final:
q_water_final = m_water * c_water * ΔT
where m_water = 25.0 g is the mass of the cold water, c_water = 4.184 J/g°C is the specific heat of water, and ΔT = (29.5°C - 20.0°C) = 9.5°C is the change in temperature.
q_water_final = 25.0 g * 4.184 J/g°C * 9.5°C = 967.35 J
Finally, calculate the heat capacity of the coffee cup calorimeter:
q_calorimeter = q_water + q_water_final = 1057.35 J + 967.35 J = 2024.70 J
So the heat capacity of the coffee cup calorimeter is 2024.70 J.
A 25.0 g sample of warm water at 40.0⁰C was added to a 25.0 g sample of water in a Styrofoam coffee cup calorimeter initially at 20.0⁰C. 2024.70 J is the heat capacity of the coffee cup calorimeter.
What is heat capacity?A physical feature of matter known as heat capacity and thermal capacity is the quantity of heat that must be applied to an object in order to cause a unit change in temperature. Heat capacity is measured in joules per kelvin (J/K), the SI unit. A broad property is heat capacity.
The particular heat capacity, which can be calculated by dividing an object's heat capacity by its mass, is the comparable intense attribute. The molar heat capacity is obtained through dividing the specific heat even by molecular weight of the substance. The heat capacity per volume is gauged by the volumetric heat capacity. The term "thermal mass" is frequently used in civil engineering and architecture to describe a building's ability to hold heat.
q calorimeter = q water + q water final
q water = m ×c water ×ΔT
q water = 25.0 g×4.184 J/g°C ×10.5°C
= 1057.35 J
q water final = m×c of water × ΔT
q water final = 25.0 g×4.184 J/g°C ×9.5°C
= 967.35 J
q calorimeter = q water + q water final
= 1057.35 J + 967.35 J
= 2024.70 J
Therefore, 2024.70 J is the heat capacity of the coffee cup calorimeter.
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what is a respiration?
Answers
Answer:
Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells)
Explanation:
In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
8. Which is correct about kinetic energy?
As the kinetic energy increases gas molecules move slower
B. As the kinetic energy increases, the temperature of the gas increases
C. As the kinetic energy decreases, gas molecules move faster
D. As the kinetic energy decreases, the temperature of the gas increases
Answers
Answer:
is B
Explanation:
Please I need help thank you
Answers
Answer:
its sodium hydroxide
Explanation:
Example Scenario:
Leah finished her lunch. All that is left is her plastic sandwich bag. Lea thinks there is no longer anything in the bag, but Paul disagrees. He thinks the bag is filled with air and air is something.
They decide to test their ideas by measuring and comparing the mass and volume of an empty flat and sealed plastic bag with one that has been inflated with air and sealed. Lea thinks that matter does not exist if it cannot be seen. Paul thinks matter can exist even when it's not visible.
Here is the data they collected:
Answers
The data collected by Leah and Paul supports Paul's opinion that matter can exist even when it is not visible.
What is support?Support is a term used to describe a range of services and resources offered to individuals in need. It can refer to providing help with practical tasks, such as helping someone to manage their finances or providing transport to medical appointments. It can also refer to providing emotional or social support. This could involve providing counselling or having regular conversations to help someone to feel understood and supported. Support can also refer to offering advice and guidance, or providing a safe space for someone to talk and express their feelings. In its broadest sense, support is about helping someone to have the best quality of life they can.
This is because the mass of the inflated bag is greater than the mass of the empty bag despite the fact that the volume of the inflated bag is much greater. This shows that the inflated bag contains air, which is matter, even though it cannot be seen.
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Scientists us ________waves to study the characteristics of Earth Layers_______ cannot travel through liquid, so the ________must be liquid.
Answers
Answer:
1)seismic 2) S-waves 3) outer core
Answer:the other comment is right
Explanation:
What must be satisfied for a hypothesis to be useful?
A. It must be theoretical.
B. It must be observable.
C. It must be based on scientific law.
D. It must be testable.
Answers
During a physical change
A. the properties of matter change.
B. the properties of matter are not affected.
C. the color of matter changes.
D. none of the above
Answers
A certain gas at 2oC and 1.00 atm pressure fills a 4.0 container. What volume will the gas occupy at 100oC and 780 torr pressure?
Answers
The final volume V₂=4.962 L
Further explanationGiven
T₁=20 + 273 = 293 K
P₁= 1 atm
V₁ = 4 L
T₂=100+273 = 373 K
P₂=780 torr=1,02632 atm
Required
The final volume
Solution
Combined gas law :
P₁V₁/T₁=P₂V₂/T₂
Input the value :
V₂=(P₁V₁T₂)/(P₂T₁)
V₂=(1 x 4 x 373)/(1.02632 x 293)
V₂=4.962 L
Which circuits are parallel circuits?
Answers
Circuits C and D are parallel circuits. Therefore, options C and D are correct.
Parallel circuits are a type of electrical circuit configuration where multiple components are connected in parallel to the same power source. In a parallel circuit, each component has its own separate path for current to flow. It allows independent current flow through each component.
In a parallel circuit, the components, such as resistors, lamps, or other electrical devices, are connected side by side, with each component having its own branch or "loop" connecting it to the power source.
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PLEASE ANSWER ASAP! which pair of elements would most likely combine to form a salt?
Ca and C
In and Fe
Ne and F
Mg and Cl
Answers
Answer:
Ne and F
Explanation:
Ne and F
Answer: It’s Mg and Cl.
Explanation:
The difference in electronegativity between them is the highest out of them.
Chemistyd
By mistake you and sat instead of sugar to the
of How can you remove the salt
Answers
If you accidentally add salt instead of sugar to a recipe, you can use vinegar to counteract the salty taste.
If you have added salt instead of sugar to a recipe, then you can try to remove the salt by adding a substance that will counteract its flavor. One such substance is vinegar, which is an acid and can help to neutralize the salty taste. Here are the steps to remove salt from a dish:
1. Remove as much of the salty liquid or sauce as possible.
2. Dilute the remaining sauce or liquid by adding more of the ingredients in the recipe, except for the salt
3. Taste the dish and add more sugar if needed.
4. If the dish is still too salty, add a little bit of vinegar.
5. Keep tasting the dish and adjusting the sugar and vinegar until it is no longer too salty.6. If the dish becomes too sweet, add more of the other ingredients to balance it out.
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After one half life ___% of the atoms will change to a stable
Answers
Answer:
the answer is 30% if the atoms will change to a stable
burning 12g of urea raise temp of water by 30C what is the enthalpy of combustion for 1kg urea
Answers
The enthalpy of combustion for 1kg of urea is -1223525.84 J/mol.
Urea is a compound that is used in fertilizers and in some plastics.The enthalpy of combustion for urea is the amount of energy that is released when urea is burned. In order to calculate the enthalpy of combustion for 1kg of urea, we need to use the information that is provided to us in the question. Let us start by writing down the balanced equation for the combustion of urea: CO(NH2)2 + 3/2 O2 → CO2 + 2H2O + N2
The balanced equation shows that 1 mole of urea reacts with 1.5 moles of oxygen gas to produce 1 mole of carbon dioxide, 2 moles of water, and 1 mole of nitrogen gas. The enthalpy change for this reaction is equal to the amount of energy that is released when 1 mole of urea is burned.
The heat of combustion (ΔHc) of urea is -632.6 kJ/mol. This means that 632.6 kJ of energy is released when 1 mole of urea is burned. We know that 12g of urea raised the temperature of water by 30°C. We can use this information to calculate the amount of energy that was released when 12g of urea was burned.
The specific heat capacity of water is 4.18 J/g°C. This means that it takes 4.18 J of energy to raise the temperature of 1 gram of water by 1°C. Therefore, it takes 4.18 x 1000 = 4180 J of energy to raise the temperature of 1 kg of water by 1°C.
We know that 12g of urea raised the temperature of water by 30°C. Therefore, the amount of energy that was released when 12g of urea was burned is:
Energy = mass x specific heat capacity x temperature change
Energy = 0.012 kg x 4180 J/kg°C x 30°C
Energy = 1497.6 J
We can now use this information to calculate the enthalpy of combustion for 1kg of urea:
Enthalpy of combustion = energy released / moles of urea burned
Enthalpy of combustion = 1497.6 J / (0.012 kg / 60.06 g/mol)
Enthalpy of combustion = - 1223525.84 J/mol
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Which of the following is an incorrect representation for a neutral atom?
36Li
613C
3063Cu
1530P
Answers
This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li
To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.
Let's analyze the given representations:
36Li:
This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.
613C:
This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.
3063Cu:
This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.
1530P:
This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.
Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.
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What is the pH of a solution that is 1.9×10−9 M in NaOH ?
Answers
A small amount of chemical splashes in Frank’s eye. What should Frank do immediately?
Answers
Answer:
A small amount of chemical splashes in Frank's eye. What should happen next? Frank should go to the eyewash station while his lab partner tells the teacher what happened.
Explanation:
Brainlist
An infant acetaminophen suspension contains 80.0mg/0.80 mL suspension. The recommended dose is 15 mg/kg body weight. (1.000 lb. is equivalent to 453.59 g; this is a measured equality.)
How many mL of this suspension should be given to an infant weighing 17 lb ? (Assume two significant figures.)
Express your answer using two significant figures.
Answers
The amount, in mL, of the suspension that should be given to an infant weighing 17 lb will be 1.16 mL
Dimensional analysis0.8 mL of the liquid contains 80.0 mg of the drug.
The recommended dose is 15 mg per kg of body weight
The infant to be given the drug weighs 17 lb.
First, let's convert the weight of the infant to kg.
1 lb = 453.59 g
17 lb = 453.59 x 17/1
= 7711.03 g
1000 g = 1 kg
7711.03 g = 7711.03 x 1/1000
= 7.711 kg
So, the baby's weight is 7.711 kg.
The drug dose for the baby can thus be calculated as:
15 mg x 7.711 = 115.67 mg
But 0.8 mL of the drug contains only 80.0 mg. How many mL will contain 115.67 mg?
0.8 x 115.67/ 80.0 = 1.16 mL
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Methane is combusted with Oxygen to produce Carbon Dioxide and Water. How many grams of oxygen are required to react with 55 grams of
Methane?
A.55 g
B.110 g
C.165 g
D.220 g
Answers
871g of sodium chloride is how many moles
Answers
Answer:
14.9 mol
Explanation:
To find the number of moles in a given mass of a sample of sodium chloride (NaCl), we can multiply the number of grams in the sample by the molar mass of sodium chloride, which is 58.44 g/mol.
871 g × (1 mol / 58.44 g)
= 871/58.44 mol
≈ 14.9 mol
Note that we rounded to 3 significant figures in the final answer because that is how many significant figures were given in the mass measurement of the sodium chloride sample.
What wavelength (in nm) of light is emitted when an electron transitions from the n= 12 to the n = 4 state?Use A£= -2.179x10^-18. And 2.998x10^8
Answers
ANSWER
STEP-BY-STEP EXPLANATION