Refer to the Biochemistry in Focus section of your text for this chapter to answer this question: Oxybenzone reacts with the base thymine and forms an oxetane derivative of thymine. Which of the following is the most likely reason the oxetane derivative of thymine disrupts DNA replication? The oxetane derivative is not recognized by DNA polymerase The oxetane derivative can form hydrogen bonds with guanine: The oxetane derivative lacks the functional groups to form hydrogen bonds with adenine_ The oxetane derivative resembles uridine
Answers
The option that is the most likely reason the oxetane derivative of thymine disrupts DNA replication is option A: The oxetane derivative is not recognized by DNA polymerase.
Describe oxybenzone?An organic substance used in sunscreens is oxybenzone. It is a benzophenone derivative. It produces white crystals that dissolve easily in the majority of organic solvents. Because it absorbs UV-A radiation, it is a component of sunscreen and other cosmetic products.
Therefore, one of the often used active chemicals in sunscreens offered in the US is oxybenzone. When two nucleotides are misaligned, the DNA polymerase is unlikely to make links between them. The DNA polymerase operates as an exonuclease.
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Related Questions
Cordell bought new tires for his bicycle. As he rode his bike on the hot street, the temperature of the air in the tires increased. If the volume of the air stayed the same, what happened to the pressure inside the tires?
A. It decreased. B. It increased. C. It stayed the same. D. It was inversely proportional to the temperature
Answers
Answer: The answer is B. The pressure inside the tires increased.
Explanation:
The relationship between the pressure, volume, and temperature of a gas is described by the ideal gas law, which is usually written as:
\($$PV = nRT$$\)
where:
- \(\(P\)\) is the pressure,
- \(\(V\)\) is the volume,
- \(\(n\)\) is the number of moles of gas,
- \(\(R\)\) is the ideal gas constant, and
- \(\(T\)\) is the temperature (in Kelvin).
In this case, the volume \(\(V\)\) and the number of moles \(\(n\)\) of air in the tires stay the same. The temperature \(\(T\)\) is increasing. Therefore, for the equation to remain balanced, the pressure \(\(P\)\) must also increase.
So, the answer is B. The pressure inside the tires increased.
Which term represents the strength of the attraction an atom has for electrons in a chemical bond?
Answers
Answer:
Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself. Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.
Answer:
Electronegativity
a substance decomposes with a rate constant of 9.05 Ãâ€"" 10âÂȉ´ s⻹. how long does it take for 15.0% of the substance to decompose?
Answers
37.41 min is the time required for the substance to reach 15.0% of its original amount, given its specific rate constant for decomposition.
Given, Rate constant (k) = 9.05 × 10⁻⁴ s⁻¹,
Let A be the initial quantity of the substance.
We know that, the rate of reaction is directly proportional to the amount of the substance present.
Hence, the first-order integrated rate equation is given as follows:
ln ([A]/[A₀]) = -kt
We can rearrange this equation as follows:
[A]/[A₀] = e^-kt
Where [A₀] is the initial amount of the substance, [A] is the amount of substance remaining after time t has elapsed, and k is the rate constant.
Substituting the values we get 0.15/1 = e-9.05 × 10⁻⁴ t.
Taking natural logs on both sides we getting 0.15 = -9.05 × 10⁻⁴ t × ln Solving for t we get = 2244.52 s = 37.41 min (approx).
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The complete question is-
A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 15.0% of the substance to decompose? In other words, what is the time required for the substance to reach 15.0% of its original amount, given its specific rate constant for decomposition?
for the sn2 reaction, draw the major organic product and select the correct (r) or (s) designation around the stereocenter carbon in the organic substrate and organic product. include wedge‑and‑dash bonds and draw hydrogen on a stereocenter.
Answers
For stereocenter carbons, the proper abbreviations are (S) for the organic substrate and (P) for the organic product (R).
This is further explained below.
What is a nucleophile?Generally, The reaction's substrate is denoted as S, and its output as R. because of it. The mechanism of the SN2 reaction may be stated succinctly as follows: This nucleophilic substitution procedure only needs one step.
The reaction is known as the SN2 reaction because two reactants are involved in the step that establishes the rate.
In the mechanism of the reaction, the nucleophile attacks the electrophile, leading to a transition phase in which the electrophile's alkyl group departs and the nucleophile forms a new bond with the still-present substrate.
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Respiration is measured in a human. How do the concentrations of o2 and co2 in inhaled air compare with exhaled air?.
Answers
Concentrations of O₂ and CO₂ in inhaled air compare with exhaled air when inhaled will have more oxygen and less carbon dioxide and when exhaled air have more carbon dioxide and less oxygen
Respiration is the act of respiring inhalation and exhalation of air and also called breathing and respiration also described as human take in oxygen and release carbon dioxide and this oxygen that is taken in by the cells is used for carrying various functions in the cell and is also used for deriving energy from the food and inhaled air is the oxygen rich and this air is important for the requirement of energy and exhaled air is the air that breath out which is waste air carbon dioxide which is not require for the body
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PLEASE HELP ASAP
which is a primary consumer?
Picture shown above
Answers
zooplankton cod and krill
Help me answer these questions
Answers
Answer:
10, True
Explanation:
Because weather is what conditions of the atmosphere are over a short period of time and climate is how the atmosphere behaves over a long period of time.
Answer:
8. Equator
9.
a. thermometer
b. manometer
c.hygrometer
d.Anemometers
10. True
Explanation:
03.01 Atomic Theory Guided Notes
Objectives:
In the lesson you will:
explain how Dalton's atomic theory was modified, but not discarded
describe the structure of an atom
describe the electrical charges and forces that exist between protons, neutrons, and electrons
state the atomic masses of protons, neutrons, and electrons
Big Ideas:
Key Questions and Terms
Notes
What new scientific evidence led to changes in Dalton’s atomic theory?
What did J. J. Thomson discover about electrons?
What was Rutherford’s contribution to the structure of an atom?
Explain the process of how James Chadwick found the neutron.
Explain what can happen to scientific theories over time.
What is the structure of an atom?
What is a proton?
What is a neutron?
What is an electron?
What are the forces that exist inside an atom?
Explain how a neutral atom can become positively or negatively charged.
What are the atomic masses of protons, neutrons, and electrons?
How is the atomic mass of an atom determined and why are electrons not used in the calculation?
What is an amu?
Answers
Answer:
1.. all atoms contain tiny negatively charged subatomic particles or electrons.
2..The atom, as described by Ernest Rutherford, has a tiny, massive core called the nucleus. The nucleus has a positive charge
3...he bombarded Beryllium with alpha particles from the natural radioactive decay of Polonium.
4..Theories can be improved or modified as more information is gathered so that the accuracy of
what kind of intermolecular forces act between a bromide anion and a methanol ch3oh molecule?
Answers
The intermolecular forces that act between a bromide anion (Br-) and a methanol molecule are hydrogen bonding and dipole-dipole interactions
Bromide anion (Br-) and methanol (CH3OH) are held together by intermolecular forces. The polar hydroxyl (OH) group in methanol creates hydrogen bonds with the negatively charged bromide anion. These hydrogen bonds are strong, directional, and specific. The methanol molecule has an overall dipole moment, creating dipole-dipole interactions with the bromide anion. Dipole-dipole interactions are the result of attractive forces between positive and negative ends of polar molecules. The polar nature of methanol and the negative charge of the bromide anion result in a significant dipole-dipole interaction between them .London dispersion forces may also play a role in the interaction between Br- and CH3OH, as both species are non-polar. These intermolecular forces result in a stable, cohesive molecular assembly between the bromide anion and methanol. The strength of these intermolecular forces will influence the physical properties of a solution containing Br- and CH3OH.
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Which action happens at the microscopic scale as the temperature of a substance decreases and it eventually freezes?
Answers
The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.
A liquid can turn into a solid if it is cooled down far enough.
Why does a liquid become a solid when its temperature drops?The average kinetic energy of the molecules falls as a liquid cools.
The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.
Freezing is the process of transitioning from a liquid to a solid.
It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.
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Adding or removing thermal energy causes a change in state of matter.
O True
O False
Answers
Answer:"You can change an object's state of matter by adding or removing thermal energy. When you add thermal energy to an object, these things can happen: Particles move faster (increased kinetic energy). Particles get farther apart (increased potential energy)."
Explanation:
Sodium carbonate releases carbon
dioxide when decomposed by heating.
Which reaction shows the correctly
balanced equation?
A. Na₂CO,
CO + Na₂O₂
B. Na₂CO, CO₂ + Na₂O
C. Na₂CO, CO₂ + 2Na
D. NaCO,
->>
->>
CO₂ + NaO
Answers
The reaction that correctly shows the balanced equation is Na₂CO₃ = CO₂ + Na₂O (option B).
How to balance a chemical reaction?A chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
A chemical equation is said to be balanced when the number of atoms of each element on both sides of the equation are the same.
According to this question, sodium carbonate is said to release carbon dioxide when decomposed by heating.
The balanced chemical equation for the decomposition is as follows:
Na₂CO₃ = CO₂ + Na₂O
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Which statement best describes how an inflated air mattress is evidence of matter
Answers
The mass of the air mattress has decreased
Calculate the mass of 2. 18 x 10^22 molecules of B2H6? Show your work!!!
Answers
Multiplying 0.036 moles by 27.67 g/mol, we find that the mass of 2.18 x 10^22 molecules of B2H6 is approximately 1 gram.
To calculate the mass of a substance, we need to know its molar mass, which is the mass of one mole of the substance. In the case of B2H6, we have two boron atoms (B) and six hydrogen atoms (H). The molar mass of B2H6 can be calculated by adding up the molar masses of the individual atoms.
Boron (B) has a molar mass of approximately 10.81 g/mol, and hydrogen (H) has a molar mass of approximately 1.01 g/mol. Multiplying the molar mass of boron by 2 (since we have two boron atoms) and adding the molar mass of hydrogen multiplied by 6 (since we have six hydrogen atoms), we find that the molar mass of B2H6 is approximately 27.67 g/mol.
Next, we can use Avogadro's number, which is approximately 6.022 x 10^23, to convert the number of molecules to moles. Dividing the given number of molecules (2.18 x 10^22) by Avogadro's number, we find that we have approximately 0.036 moles of B2H6.
Finally, to calculate the mass, we multiply the number of moles by the molar mass. Multiplying 0.036 moles by 27.67 g/mol, we find that the mass of 2.18 x 10^22 molecules of B2H6 is approximately 1 gram.
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Mary is driving on a straight road. When a deer jumps in front of her, she turns her car sharply to the left. What will happen to loose objects inside the car?
Answers
Answer: The loose objects will tend to move to the right inside the car.
Explanation:
The options include:
A. The loose objects will tend to move to the left inside the car.
B. The loose objects will tend to move to the right inside the car.
C. The loose objects will tend to move toward the front of the car.
D. The loose objects will tend to move toward the back of the car.
Based on the question, we are informed that Mary is driving on a straight road and then a deer jumps in front of her, which made her turn her car sharply to the left.
The loose objects inside the car will move towards the opposite direction. Since Mary made a left turn, the loose objects in the car would move to the right.
how does the periodic table tell me if a element is solid, liquid, gas, or man made?
Answers
Answer:
if you search up the periodic table and go to any website it will let you press on the element and it will say if it is a gas,solid or liquid and it might say if it is man made!
Explanation:
i really hope this helps:)
find the coordinates of the following points
Answers
(
a
,
b
)
is a are the coordinates of a point in Cartesian Plane,
u
is its magnitude and
α
is its angle then
(
a
,
b
)
in Polar Form is written as
(
u
,
α
)
.
Magnitude of a cartesian coordinates
(
a
,
b
)
is given by
√
a
2
+
b
2
and its angle is given by
tan
−
1
(
b
a
)
Let
r
be the magnitude of
(
−
2
,
5
)
and
θ
be its angle.
Magnitude of
(
−
2
,
5
)
=
√
(
−
2
)
2
+
5
2
=
√
4
+
25
=
√
29
=
r
Angle of
(
−
2
,
5
)
=
tan
−
1
(
5
−
2
)
=
tan
−
1
(
−
5
2
)
=
−
68.198
degree
⇒
Angle of
(
−
2
,
5
)
=
−
68.198
degree
But since the point is in second quadrant so we have to add
180
degree which will give us the angle.
⇒
Angle of
(
−
2
,
5
)
=
−
68.198
+
180
=
111.802
⇒
Angle of
(
−
2
,
5
)
=
111.802
=
θ
⇒
(
−
2
,
5
)
=
(
r
,
θ
)
=
(
√
29
,
111.802
)
⇒
(
−
2
,
5
)
=
(
√
29
,
111.802
)
Note that the angle is given in degree measure.
A bottle is filled with a small amount of a volatile liquid and sealed. Sometime later it is observed that no liquid is evident in the sealed bottle. Which of the following statements would explain this observation? a. More time is needed to establish equilibrium. b. Liquid and vapor are at equilibrium in the bottle. c. Too little liquid was added to achieve a liquid vapor equilibrium in the closed system d. The vapor state is favored when equilibrium is established e. The liquid has undergone sublimation
Answers
The statement that would best explain the observation of no liquid being evident in the sealed bottle is: b. Liquid and vapor are at equilibrium in the bottle.
When liquid and vapor are at equilibrium in a closed system, it means that the rate of condensation (liquid turning into vapor) is equal to the rate of vaporization (vapor turning into liquid). In this case, it appears that all the liquid has vaporized, and no liquid is evident. This suggests that the liquid and vapor have reached a state of equilibrium, where the amount of liquid remaining is negligible compared to the amount of vapor present.
The vapor state is favored when equilibrium is established because the pressure exerted by the vapor phase reaches a point where it equals the vapor pressure of the liquid at that temperature. At this equilibrium point, no further net condensation or vaporization occurs, resulting in the absence of visible liquid in the sealed bottle.
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How do you prepare 300 ml buffer of 100 mm tris ph 7. 8 and 250 mm nacl?
Answers
A buffer of 300 ml of 100 mM Tris pH 7.8 and 250 mM NaCl can be prepared by dissolving 3.64 g of Tris and 4.27 g of NaCl in 300 ml of water, and adjusting the pH to 7.8 using 10 ml of 1 M HCl. The % v/v refers to the volume of the solute while % w/v refers to the weight of the solute.
To prepare a 300 ml buffer of 100 mM Tris pH 7.8 and 250 mM NaCl, you need to follow the following steps:1. Calculate the amount of Tris required to prepare 100 mM solution of Tris, which is equal to 100 mM x 0.3 L = 0.03 moles. The molecular weight of Tris is 121.14 g/mol. Thus, the amount of Tris required is 3.64 g.2. To make the buffer of pH 7.8, use HCl or NaOH to adjust the pH. For this, use 1 M HCl or 1 M NaOH to avoid diluting the buffer. Add 10 ml of 1 M HCl to the solution.3. Measure 4.27 g of NaCl and add it to the solution. 4. Add water to the solution to make up the final volume of 300 ml. 5. Mix the solution thoroughly until everything is dissolved. Your buffer of 100 mM Tris pH 7.8 and 250 mM NaCl is now ready. % v/v refers to the percentage volume of a solute in a solvent while % w/v refers to the percentage weight of a solute in a solvent. The percent v/v is calculated by the volume of the solute divided by the volume of the solution while the percent w/v is calculated by the mass of the solute divided by the volume of the solution in which it is dissolved.For more questions on buffer
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The correct question would be as
How do you prepare 300 ml buffer of 100 mM Tris pH 7.8 and 250 mM NaCl? % v/v,% w/v Questions.
I NEED EXPLANATIONSS!!!! Help , i have to past or my teacher will fail me .. again !!
Answers
Answer:
Put simply, Asexual reproduction is reproduction without the use of gametes or the number of chromosomes being changed. So they are genetically identical creatures. Some animals include wasps, lizards, sharks, turkeys, and sea urchins.
Sexual reproduction includes chromosomes and gametes being fused, creating genetically different offspring. Examples of creatures that reproduce sexually are humans, chickens, cow, pigs, etc.
Explanation:
what four elements does halogen bond with?
Answers
fluorine, chlorine, bromine, and iodine,
What is the molarity of 3 mole of hydrochloride acid in 3 L of water ?
Answers
Answer:
1
Explanation:
Formula of molarity is
\(M=\frac{n}{v}\)
M= molarity
n= no of moles
v= volume in liters (if mL then you have to convert it to L)
During photosynthesis, the following reaction takes place: carbon dioxide + water + light energy → sugar + oxygen During cellular respiration, the following reaction takes place: sugar + oxygen → carbon dioxide + water + chemical energy Given this information, how are photosynthesis and cellular respiration related? A. The products of photosynthesis are the reactants of cellular respiration. B. Photosynthesis and cellular respiration both start with the same materials. C. The same type of energy is found in both photosynthesis and cellular respiration. D. Photosynthesis and cellular respiration both produce the same materials.
Answers
specific heat capacity
- Heat capacity represents the amount of heat a substance can absorb or release without changing temperature. Specific heat capacity is the heat capacity per unit of mass of substance.
- the energy required to raise the temperature of one gram of a substance by one degree Celsius
Answers
Specific heat capacity is a property of a substance that represents the amount of energy required to raise the temperature of one gram of that substance by one degree Celsius.
In other words, it tells us how much heat a substance can absorb or release without changing its temperature. Here is a step-by-step explanation:
1. Identify the substance and its specific heat capacity (usually given in units of J/g°C or cal/g°C).
2. Determine the mass of the substance (in grams) and the desired temperature change (in degrees Celsius).
3. Use the formula: Q = mcΔT, where Q is the heat energy absorbed or released, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.
4. Solve the equation for Q to find the amount of energy required or released for the given temperature change.
Remember, specific heat capacity values are unique to each substance and help us understand how different materials react to changes in temperature.
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what will be the hexadecimal value of al after these instructions execute? mov al,0cfh and al,2bh
Answers
0Bh will be the hexadecimal value of AL (Aluminium)after these instructions execute
#D9DAD9 is the hex code for aluminum. (217, 218, 217) are the corresponding RGB values, indicating that it is made up of 33% red, 33% green, and 33% blue. Printers employ the CMYK color coding, which are C:1 M:0 Y:1 K:15. Aluminum has a brightness value of 85%, a saturation value of 0%, and a hue value of 120° on the HSV/HSB scale.Hexadecimal is the most practical number system to work with when dealing with long strings of numbers due to its compactness, aligned correspondence of 4 bits to 1 symbol, and freedom from the need to perform multiplication and addition when switching between bases (compare switching from binary to decimal and back).
complete question:What will be the hexadecimal value of AL after these instructions execute?
mov al, 0CFh
and al, 2Bh
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a uv/vis spectrometer was used to determine the concentration of an unknown colored compound in solution. the cuvette had a path length of 1.00 cm and the molar absorptivity was found to be 0.296 m- 1cm-1. find the concentration of the unknown compound in solution if the absorbance was measured to be 0.314 a.
Answers
1.0608 mol/L is the concentration of the compound measured using UV/Vis spectrophotometer.
The equation for the Beer-Lambert Law has the following structure:
A=E×b×c
Where b is the sample's route length, E is the molar absorptivity, A is absorbance, and c is the compound's concentration in solution.
In question: E is 0.296 m- 1cm-1. A is .314 and path length is 1.00 cm.
By adding values in formula the answer is 1.0608 mol/L.
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True or False (+2 Points Possible each): Write true if the statement is true. If false, replace
the underlined word with the correct word in the space provided.
1. Radiation is the transfer of energy through space.
2. Molten rock rises in Earth's mantle caused by gravity.
3. Fossils provide evidence of sea-floor spreading.
4. Older, denser Earth material sinks below younger material
known as subduction.
5. Convergent boundaries
move plates towards each other
mountains.
is
forming
PLEASE HELP ASAP THIS IS DUE BY MIDNIGHT!
Answers
Answer:
2. Molten rock rises in Earth's mantle caused by (pressure)
Explanation:
i think i just had a similar question
The action of the sodium-potassium pump is an example of passive transport.
a. True
b. False
Answers
True
The sodium-potassium pump carries out a form of active transport—that is, its pumping of ions against their gradients requires the addition of energy from an outside source.
Can someone please help me with the last column!! ASAP
Answers
The ratio of the volume and temperature of the gas in the given table is as follows:
0.72/276 = 0.002620.78/294 = 0.002650.84/313 = 0.002680.87/330 = 0.002630.93/355 = 0.002620.98/371 = 0.00264What is the relationship between the volume and temperature of a gas?Charles's law, also known as the law of volumes, describes the relationship between the volume and temperature of a gas at a constant pressure. According to this law, the volume of a gas is directly proportional to its absolute temperature (measured in Kelvin) when the pressure is constant.
In other words, as the temperature of a gas increases, its volume will also increase proportionally, and vice versa. Mathematically, Charles's law can be expressed as:
V/T = k
where V is the volume of the gas, T is its temperature in Kelvin, and k is a constant of proportionality.
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Does watermelon milk exist?
Answers
Answer:
yes
Explanation: