The basis of the difference between the leading and lagging strand is that DNA polymerase can join new nucleotides only to the 3' end of the growing strand.
The leading strand is the new DNA strand that continually extends from 5' to 3'. On the lagging strand, Okazaki fragments develop and are linked by DNA ligase activity. DNA polymerase can only attach new nucleotides to the 3' end of the developing strand, which forms the basis of the distinction between the leading and lagging strands.
Therefore, "DNA polymerase can link additional nucleotides exclusively to the 3' end of the developing strand" is the appropriate response.
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Which of the following are SI units? Select
all that apply.
Seconds (s)
Liters (L)
Explanation:SI units relate to the International System of Units. These units are the base, metric units that are most commonly accepted for different measurements.
Common SI Units
The most common SI units are as follows:
Length - meter (m)Time - second (s)Mass - kilogram (kg)Amount of substance - mole (mole)Electric current - ampere (A)Temperature - kelvin (K)Volume - liter (L)*Note that gram (g) is not an SI unit
Each type of measurement will only have 1 SI unit. This is the unit that will be expected for most answers. Sometimes this means converting an answer into a different unit so it is more widely accepted.
Why SI Units are Important
SI units are important for the same reason that the metric system is used. It gives a standardized list of measurements that scientists across the world can use. Also, it makes it easier to compare scientific findings and studies when all of the measurements are given in the same units.
There are times when it is unrealistic to use SI units. For example, when discussing space, using meters will not be realistic due to the size of space. Also, when measuring the mass of small elements, kilograms are too large. But otherwise, SI units should be used.
A
What type of reaction is illustrated?
C₂H4+302 → 2CO₂ + 2H₂O
combustion
decomposition
double
replacement
Answer:
A.) combustion
Explanation:
Combustion reactions are a specific type of redox reaction which always have the same general structure: CₓHᵧ + O₂ ---> H₂O + CO₂ + heat/light
Decomposition reactions are reactions which involve a molecule breaking down into smaller compounds/elements. They have the general structure: AB ---> A + B
Double replacement reactions are reactions in which the cation of one compound is swapped with the cation of another compound. They have the general structure: AB + CD ---> AD + CB
How many Chlorine molecules are in 6.5 moles of chlorine?
Answer:
6.5 x ( 6.02x 10^23)= 3.913 x10^24
Explanation:
6.5 x ( 6.02x 10^23)= 3.913 x10^24
What product is used in a pedicure bath to cleanse and soften the skin? a foot masque a foot soak massage oil cuticle remover submitnext
The product which is used in a pedicure bath to cleanse and soften the skin is foot soak
What is skin pedicure?Skin pedicure is a special and cosmetic treatment of the body's skin including the feet and toenails, analogous to a manicure.
So therefore, the product which is used in a pedicure bath to cleanse and soften the skin is foot soak
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When testing the temperature of catalase, what would happen if you changed the temperature using the same tube with the same catalase and hydrogen oxide mixture?.
If we change the temperature using same tube with the same catalase and hydrogen oxide mixture, the hydrogen peroxide will break into oxygen and water molecule.
What is catalase?It is an enzyme which catalyses the decomposition reaction of hydrogen peroxide to water and oxygen.
Its function is to protect the oxidative damage by ROS
ROS is reactive Oxygen Species.
What is an enzyme?Enzymes are made of proteins which catalyses the biological reaction.
Effect of temperature on catalase:Increase of temperature results in the loosening of hydrogen bond and helps the catalase to decompose hydrogen peroxide.
The change in temperature using same tube with the same catalase and hydrogen oxide mixture, the hydrogen peroxide will break into oxygen and water molecule.
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What type of molecule is shown below?
S
H-C=C-CH2-CH3
O A. An alkene-alkyne
OB. An alkane-alkyne
OC. An alkyne
O D. An alkane
H - C ≡ C - CH₂ - CH₃ this is an alkyne molecule.
Hence, Option C is correct answer.
What is Alkane ?The saturated hydrocarbon which have only single bonds between the carbon atoms is called Alkanes.
What is Alkene ?The unsaturated hydrocarbon which have at least one carbon carbon double bond is called Alkene.
What is Alkynes ?The unsaturated hydrocarbon which have one or more than one carbon carbon triple bonds is called Alkynes.
H - C ≡ C - CH₂ - CH₃ in this molecule one triple bond is present so it is alkyne.
Thus from the above conclusion we can say that H - C ≡ C - CH₂ - CH₃ this is an alkyne molecule.
Hence, Option C is correct answer.
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An element with 11 neutrons, 11 protons, and 11 electrons would have a mass number o?
The mass number of element is 22.
The mass number is the sum of number of electrons/proton and number of neutron .
Mass number = number of proton/electron + number of neutrons
If an element with 11 neutrons, 11 protons, and 11 electrons then mass number is calculated as,
Mass number = number of proton/electron + number of neutrons
Mass number = 11 + 11 = 22
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A Carnot cycle operates between the temperatures limits of 400 K and 1600 K, and produces 3600 kW of net power. The rate of entropy change of the working fluid during the heat addition process is
The rate of entropy change:
The rate of entropy change of the working fluid during the heat addition process is 3 kW/K
What is the Carnot cycle?
The Carnot Cycle is a thermodynamic cycle made up of reversible isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression processes in succession. The ratio of the heat absorbed to the temperature at which the heat was absorbed determines the change in entropy.The entropy of a system:
The rate of heat addition is expressed as,
Q = [tex]\frac{WT_{H}}{T_{H}- T_{L}}[/tex]
The entropy of a system is a measure of how disorderly a system is getting. The rate of entropy generation during heat addition is,
[tex]S_{gen} = \frac{Q}{T_{H}} = \frac{W}{T_{H} - T_{L}}[/tex]
Calculation:
Given:
[tex]T_{L}[/tex] = 400K
[tex]T_{H}[/tex] = 1600K
W = 3600 kW
Put all the values in the above equation, and we get,
[tex]S_{gen} = \frac{W}{T_{H} - T_{L}}[/tex] = [tex]\frac{3600}{1600-400}[/tex] = 3 kW/K
The rate of entropy change is 3 kW/K
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To make a solution of lemonade, lemon juice and sugar are dissolved in water. the water is the ______ in this example.
To make a solution of lemonade, lemon juice and sugar are dissolved in water. the water is the Solvent in this example.
Solvent Examples. Common examples of solvents consist of water, ethanol, methanol, and acetone. The term 'solvent' may be defined as a substance that has the ability to dissolve a given solute to form a solution with it.
Solvents are substances that are used to dissolve the solutes used in the formulation. These solutes can be solids, liquids, or gaseous in nature. Thus solvents are used to get a solution upon interacting the solute with a suitable solvent.
Solvents are usually, however not usually, liquids. They can also be gases or solids. The material dissolved in the solvent is referred to as the solute. collectively, the solvent and solute comprise the solution.
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Given that the initial rate constant is 0.0110s−1 at an initial temperature of 21 ∘C , what would the rate constant be at a temperature of 150. ∘C for the same reaction described in Part A?
Part A said: The activation energy of a certain reaction is 45.5 kJ/mol . At 21 ∘C , the rate constant is 0.0110s−1 . At what temperature in degrees Celsius would this reaction go twice as fast?
T2= 32 degrees
The rate of reaction at 150 degrees is 1.878.
What is the activation energy?We have the formula as;
ln(k2/k1) = Ea/R (1/T1 - 1/T2)
ln(2( 0.0110)/0.0110) = 45.5 * 10^3/8.314(1/294 - 1/T2)
0.693 = 5473(1/294 - 1/T2)
0.693/ 5473 = (1/294 - 1/T2)
1.27 * 10^-4 = 1/294
1/T2 = 1/294 - 1.27 * 10^-4
1/T2 = 340 * 10^-4 - 1.27 * 10^-4
T2 = 30 degrees
Again;
ln(k2/0.0110) = 45.5 * 10^3/8.314(1/303 - 1/423)
ln(k2/0.0110) = 5473(3.3 * 10^3 - 2.36 * 10^3)
ln(k2/0.0110) = 5.14
k2/0.0110 = e^5.14
k2 = 0.0110 * e^5.14
k2 = 1.878
The temperature that the reaction will go twice as fast is 30 degrees while the rate construction at 150 degrees is 1.878.
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Phosphate buffer solution is purchased as a(n) 10x stock solution. The solution is more concentrated than the working stock. If tasked with making 941 mL of a 1x solution of PBS, how many mL of the stock solution would be needed
94.1 mL of 10x PBS should be needed
Given:
Phosphate buffer solution = 10x
Volume of 1x solution of PBS = 941 mL
To Find:
Volume of stock solution
Solution:
A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small amount of strong acid or base is added to it.
using the formula
M1 x V1 = M2 x V2
(10x)* V1 = 1x* 941
V1 = 94.1 ml
So, 94.1 mL of 10x PBS should be needed
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Describe the scale used to measure the basicity of a substance. Demonstrate how you could differentiate a weak base from a strong one. (10
points)
Answer:
The pH scale is used to measure the acidity or basicity of a substance.
Explanation:
pH stands for potential hydrogen. It ranges from 0 to 14, 7 being neutral. The pH of water is 7 i.e. it is neither acidic nor basic. 0 to 7 shows acidic behavior while 7 to 14 shows basic behavior.
Experiment:
Dip the pH paper in the liquid and wait for ten seconds. The pH strip starts to discolor.
For a strong acid the strip will turn red.
For a weak acid the strip will become pale red.
To find the correct pH value we can compare it with the indicator scale present on the pH scale box.
The scale used to measure the basicity of a substance is called the pH scale.
What is the pH scale?The pH scale is a logarithmic scale that ranges from 0 to 14 and is used to determine the acidity or basicity of a solution. A pH value of 7 is considered neutral, values below 7 are acidic, and values above 7 are basic.
To differentiate a weak base from a strong one, you can perform the following experiments:
pH Measurement: Measure the pH of the solution containing the base using a pH meter or pH indicator paper. A strong base will have a higher pH value, typically around 12-14, indicating a highly basic solution. A weak base will have a lower pH value, closer to 7, indicating a less basic or slightly basic solution.
Conductivity Test: Dissolve a small amount of the base in water and measure its electrical conductivity using a conductivity meter. Strong bases are good electrolytes and will conduct electricity well, resulting in a high conductivity. Weak bases, on the other hand, are poor electrolytes and will exhibit lower conductivity.
Reaction with Acids: Add a few drops of a strong acid, such as hydrochloric acid (HCl), to a solution containing the base. Strong bases will rapidly and completely neutralize the acid, resulting in a significant increase in pH. Weak bases, however, will only partially neutralize the acid, leading to a smaller increase in pH.
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Describe how Alpha particles, Beta particles, and Gamma rays can be separated from one other?
Need answer ASAP, PLEASE HELP!!!!!!!!!
All three types of charge can be separated by the use of electrostatic field.
What are alpha particles?There are three kinds of rays that are basically discussed when we talk about radioactivity and they are alpha, beta and gamma rays.
Now we know that an alpha ray is positively charged, a beta ray is negatively charged while a gamma ray is not charged. This means that all three types of charge can be separated by the use of electrostatic field.
The gamma rays passes through the field without deflation , the alpha ray is deflated towards the negative part of the field, the beta rays is deflated towards the positive part of the filed.
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Which way does heat flow?
Draw the major 1,2- and 1,4-addition products that form as a result of the following reaction between one equivalent each of 2,4-hexadiene and HBr.
The major 1,2- and 1,4-addition products are 4-Bromo-2-hexene and 2-Bromo-2-hexene.
What is Markovnikov Rule ?
Markovnikov rule explains that in addition reaction of alkene react with a hydrogen halide. The hydrogen atom is attached to the carbon atom that is already bonded to the greatest number of hydrogen.
What is Addition Reaction ?An addition reaction is an organic reaction occur when two or more molecules combine to form a larger molecule without the loss of any atoms present in reactant.
Thus from the above conclusion we can say that The major 1,2- and 1,4-addition products are 4-Bromo-2-hexene and 2-Bromo-2-hexene.
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What component(s) of msa make(s) this media selective? choose all correct answers: a. phenol red b. agar c. mannitol d. sodium chloride
The component(s) of msa make(s) this media selective for sodium chloride.
MSA is a medium which has both differential as well as selective properties. The distinguishing feature is the high salt content (7.5%). On just this high salt concentration, Staphylococcus species, which frequently inhabit human skin, can develop.
Streptococcus species, however, have their growth inhibited by the high salt content of the agar. Mannitol, a sugar, would be the MSA's unique component.
Resulting in high salt concentration, the sodium chloride in MSA ensures that only Staphylococci species survive. All more gram-positive bacteria are thereafter destroyed.
Therefore, the correct answer will be option (d).
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Other than reducing greenhouse gas emissions, why would an entity switch to an alternative energy solution
Answer:
renewable energy sources such as solar and wind DONT emit carbon dioxide and other greenhouse gases that contribute to global warming
Explanation:
Which of the following explanations accounts for the fact that the ion-solvent interaction is greater for Li than for K
Li+ has a smaller ionic radius than K+
and smaller molecules have more collisions/interactions between each other
What is ion-solvent interaction ?In the case of ion-solvent interactions, the state in which the interac-tions exist is an obvious one; it is the situation in which ions are inside the solvent.
Ions are charged particles, and charges interact with other charges. So there will also be ion-ion, as well as ion-solvent, interactions in the solution.In the process of solvation, ions are surrounded by a concentric shell of solvent. Solvation is the process of reorganizing solvent and solute molecules into solvation complexes.Learn more about Ion-solvent interaction here:
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Molecules that have at least one carbon atom bonded to four different groups are __________ while molecules that do not contain a carbon atom bonded to four different groups are
Chiral carbon refers to compounds with at least one carbon atom connected to four different groups, whereas Achiral carbon refers to molecules without a carbon atom bonded to four separate groups.
What is Chiral carbon ?Chiral carbon centres are tetrahedrally positioned carbon atoms that have four distinct substituents bonded to them. The terms "stereogenic carbons" and "asymmetrical carbon atoms" are also used to describe chiral carbon atoms.
What is Achiral carbon ?An achiral molecule lacks "handedness" and can be superimposed on its mirror copy (think of a baseball bat, which can be used with either hand)
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What is the sign of δg for the folding process? what about for the unfolding (denaturation) process? how do you know?
It is a thermodynamically spontaneous process that means Protein folding occurs. The value of ΔG must be negative in the case of folding but in the case of unfolding, the value of ΔG must be positive.
When the process is thermodynamically spontaneous process results in Protein folding otherwise the process is unfolding.
The value for ΔG must be negative in the case of the folding process and the value for ΔG must be positive in the case of the unfolding process. The value of a thermodynamic parameter for the reverse reaction has an opposite sign but the same value that's why the value for ΔG must be positive and known as unfolding (denaturation) process.
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A ground test utilizing an auxiliary current electrode and an auxiliary potential electrode is known as the______.
Answer:
The three-point test
Explanation:
The three-point test refers to a ground test utilizing an auxiliary current electrode and an auxiliary potential electrode.
When you are taking a test, you are awake and alert. this means that your brain is currently generating _____.
a. alpha wave
b. beta wave
c. theta wave
d. delta wave
When you are taking a test, you are awake and alert, which means that your brain is currently generating beta waves (Option b).
What are beta waves?The beta waves are a special type of brain waves observed by using electromagnetic devices (especially in physiology).
This type of waves are dominant during conscious thought as well as during cognitive logical thinking processes.
In conclusion, when you are taking a test, you are awake and alert, which means that your brain is currently generating beta waves (Option b).
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Zinc Sulfide reacts with oxygen according to the reaction:
2ZnS (s) + 3 O2(g) 2 ZnO (s) +2 SO2 (g)
A reaction mixture contains 4.2 moles of zinc sulfide and 6.8 moles of oxygen. Once the reaction occurred as a completely as possible, what amount in moles is left of the excess reactant?
The amount in moles of the excess reactant left is 0.5 mole
Balanced equation2ZnS (s) + 3O₂(g) --> 2ZnO (s) + 2SO₂(g)
From the balanced equation,
2 moles of ZnS reacted with 3 moles of O₂
How to determine the excess reactantFrom the balanced equation,
2 moles of ZnS reacted with 3 moles of O₂
Therefore,
4.2 moles of ZnS will react with =(4.2 × 3) / 2 = 6.3 moles of O₂
From the calculations made above, we can see that only 6.3 moles of O₂ out of 6.8 moles given, is required to react completely with 4.2 moles of ZnS.
Thus, ZnS is the limiting reactant and O₂ is the excess reactant.
How to determine the mole of the excess reactant remainingThe excess reactant is O₂. Thus the mole remaining after the reaction can be obtained as illustrated below:
Mole of O₂ given = 6.8 molesMole of O₂ that reacted = 6.3 molesMole of O₂ remaining =?Mole of O₂ remaining = (Mole of O₂ given) - (Mole of O₂ that reacted)
Mole of O₂ remaining = 6.8 - 6.3
Mole of O₂ remaining = 0.5 mole
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what are the differences between the double displacement reaction and the displacement reaction ? explain with a chemical equations
In a displacement reaction, a more reactive element replaces a less reactive element from a compound. In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds.
Explaination:
Displacement chemical reaction :
A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when iron is added to a copper sulphate solution, it displaces the copper metal.
Fe + CuSO4 → FeSO4 + Cu. When zinc is added to a copper sulphate solution, it displaces the copper metal. ...
Zn + CuSO4 → ZnSO4 + Cu.
etc.
Double Displacement Chemical Reaction :
Double displacement reactions take place mostly in aqueous solutions wherein the ions precipitate and exchange of ions takes place. For example, when a solution of barium chloride is mixed with sodium sulphate, a white precipitate of barium sulphate is formed rapidly. These reactions are ionic in nature.
Here are some examples of double displacement reaction: AgNO 3 + NaCl → AgCl + NaNO.
2NaCl + CaSO4 → Na2SO4+ CaCl.
H2SO4 + 2LiOH ⇌ Li2SO4 + 2H2O.
Tim would like to know the mass of two boxes. Instead of Tim looking at the boxes to determine their mass, what should Tim use to accurately
determine the mass of each box
Answer:
The triple beam balance
A cabbage p h indicator color key. entries are 0 to 2, bright red; 3 to 4, pink; 5 to 6, purple; 7, dark violet; 8 to 9, blue; 10 to 11, bright green; 12 to 13, lighter green. why would you use a solution, such as a cabbage ph indicator, to measure the ph of household items? to see if food went bad to test the safety of water to make sure conditions are safe to use up old cabbage
We use a solution, such as a cabbage ph indicator, to measure the ph of household items :
to see if food went badto test the safety of waterto make sure conditions are safeCabbage ph indicator:Anthocyanin, a water-soluble pigment found in red cabbage, can change color when combined with an acid or a basic. The color changes to red in situations with a pH under 7, and to bluish-green in alkaline (basic) environments with a pH above 7. Cabbage isn't known to cause acid reflux, but plenty of other common foods are.
Anthocyanin turns pink when it interacts with the hydronium ions in an acid, and blue or green when it interacts with the hydroxide ions in a base. Because it may inform us if a substance is acidic or basic by changing color, cabbage juice is referred to as a pH indicator.
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Lorelai discovers a compound that is 64.8 g C, 13.62 g H, and 21.58 g O. What is the empirical formula of Lorelai's compound
The empirical formula of Lorelai's compound is C₄H₁₀O
Data obtained from the questionC = 64.8 gH = 13.62 gO = 21.58 gEmpirical formula =? How to determine the empirical formulaDivide by their molar mass
C = 64.8 / 12 = 5.4
H = 13.62 / 1 = 13.62
O = 21.58 / 16 = 1.35
Divide by the smallest
C = 5.4 / 1.35 = 4
H = 13.62 / 1.35 = 10
O = 1.35 / 1.35 = 1
Thus, the empirical formula of the compound is C₄H₁₀O
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Which color change represents a positive reaction for the presence of sugar using the Benedict's test
Answer:
my best answer is blue
Explanation:
QUICK PLEASE
9. What is the final concentration when 420 mL of a 12.0 mol/L sodium hydroxide solution is diluted to 2.0 L?
Show your work and explain each step.
Answer: 2.52 M
Explanation:
The product of molarity (moles/litre) and volume in litres yields moles, and the numbers of moles in two solutions means dilute and concentrated are equal, which is expressed by the following equation:
[tex]M_1V_1=M_2V_2[/tex]
[tex]$$Given that\\M $1=12.0 \mathrm{M}$ or mole $/ \mathrm{L}$\\$\mathrm{V} 1=420 \mathrm{ml}$\\$\mathrm{M} 2=$ ?\\$\mathrm{V} 2=2.0 \mathrm{~L}$ or $2000 \mathrm{ml}$\\\\$\mathrm{M} 1 \mathrm{~V} 1=\mathrm{M} 2 \mathrm{~V} 2$\\$\mathrm{M} 2=\mathrm{M} 1 \mathrm{~V} 1 / \mathrm{V} 2$\\$=12.0 * 420 / 2000$\\$=2.52 \ \mathrm{M}$[/tex]
How many moles of ammonia are produced when 5.0 moles of hydrogen react with excess nitrogen?
Taking into account the reaction stoichiometry, 3.33 moles of ammonia are produced when 5.0 moles of hydrogen react with excess nitrogen.
Reaction stoichiometryIn first place, the balanced reaction is:
N₂ + 3 H₂ → 2 NH₃
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
N₂: 2 moles H₂: 3 molesNH₃: 2 molesMass of ammonia formedThe following rule of three can be applied: if by reaction stoichiometry 3 moles of hydrogen form 2 moles of ammonia, 5 moles of hydrogen form how many moles of ammonia?
[tex]moles of ammonia=\frac{5 moles of hydrogenx 2 moles of ammonia}{3 moles of hydrogen}[/tex]
moles of ammonia= 3.33 moles
Finally, 3.33 moles of ammonia are produced when 5.0 moles of hydrogen react with excess nitrogen.
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