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Answer:

is a small, circular double-stranded DNA molecule that replicates autonomously.

Explanation:

hope this helps

Answer:

where are u stuck ????

Explanation:

tell us fast

Answer:

Genetic modification most likely affected the safety and availability of fruits and vegetables by potentially causing infertility, immune problems, and allergic reactions.

Answer:

i believe its b but i could be wrong

Answer:

Which statement describes a difference between transcription in eukaryotic and prokaryotic cells?

In eukaryotes, transcription occurs simultaneously with translation, while transcription in prokaryotes must complete before translation can begin..

In eukaryotes, transcription produces a monocistronic RNA, while transcription in prokaryotes produces a polycistronic RNA.

In eukaryotes, transcription produces an RNA molecule, while transcription in prokaryotes produces a DNA molecule.

In eukaryotes, transcription produces an DNA molecule, while transcription in prokaryotes produces a RNA molecule.

In eukaryotes, transcription is completed by an RNA polymerase, while transcription in prokaryotes is completed with a DNA polymerase.

Answer:

The answer is

→ False.

Explanation:

Without homeostasis, cells can't build up body systems which require homeostasis. Without homeostasis, body systems can't be created and life on Earth would be impossible without homeostasis.

Wavelength  =  (speed) / (frequency)

                     =  (3 x 10⁸ m/s) / (1 x 10⁸ /s)  =  3 meters

Answer:

Explanation:

The momentum of an object can be found by using the formula

From the question

mass = 1000 kg

speed = 2 m/s

We have

momentum = 1000 × 2

We have the final answer as

Hope this helps you

Answer:

sorry I can't able to help you

Explanation:

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[tex]\bold{\huge{\underline{ Solution }}}[/tex]

Arrhenius definition of acids :-

According to Arrehinus,

Second definition of Acids was given by Bonsted Lowry :-

According to Bonsted Lowry

3rd definition was given by Lewis

According to Lewis

Example of Acids

Arrehinus definition of bases :-

According to Arrehinus ,

Bonsted Lowry definition

According to Bonsted Lowry

Lewis definition

According to Lewis

Example of bases

[ Note :- There are so many Lewis acids and bases but they are not Arrhenius or Lowry acids or bases ]

Example of salts

Considering the definition of pH,  the pH of a 6.3×10⁻⁸ M solution of H₃O⁺ is 7.2.

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]= -log [H₃O⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

In this case, you know that [H₃O⁺]= 6.3×10⁻⁸ M. Replacing in the definition of pH:

pH= -log (6.3×10⁻⁸ M)

Solving:

pH=7.2

Finally, the pH of a 6.3×10⁻⁸ M solution of H₃O⁺ is 7.2.

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Answer:

Because the ideas about the models changed as more discoveries were made about the atom

Explanation:

I know because i took this test and made a 100% on it

hope I was helpful :)

What happens to temperature as a substance melts and heat energy is used to break the connections between molecules, until all melting is complete?.

Answer : Stays the same

Explanation:

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Answer:

the law of conservation of matter

Explanation:

that states that matter cannot be produced or destroyed in a closed system. The law of conservation of mass governs the balancing of a chemical equation.

Answer:

C

Explanation:

The enthalpy of the reactants is greater than that of the products.

The statement is true about the exothermic reaction is the enthalpy of the reactants is greater than that of the products. Therefore, option C is correct.

A chemical reaction involves the movement of energy to or from the environment. An exothermic reaction occurs when energy is transmitted to the environment, raising the ambient temperature. Combustion reactions are an example of an exothermic reaction.

Chemical processes known as exothermic reactions generate heat. Therefore, the H of reaction is negative for exothermic processes. Heat is released during an exothermic reaction, raising the temperature of the immediate environment. The environment is cooled through an endothermic process that absorbs heat.

Heat is released during an exothermic reaction, raising the temperature of the immediate environment. The environment is cooled through an endothermic process that absorbs heat.

Thus, option C is correct.

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The main difference between both models is that the Bohr model depicts all subatomic particles, but the Lewis dot diagram only depicts the symbol and valence electrons.

Lewis Structure is a simplified representation of a molecule's valence shell electrons. It's used to depict how electrons in a molecule are distributed around specific atoms.

Hence the Bohr model depicts all subatomic particles, but the Lewis dot diagram only depicts the symbol and valence electrons.

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Answer:

Speed is a form of energy or momentum that represents a person's move rate.

[tex]Example:[/tex]

I took miles per hour and used it as an example[tex].[/tex]

Hope this helps!

Answer:4 1/2 grams.

Explanation:  0.15 is equal to 4 1/2 grams because if you convert ounces into grams 0.15 is equal to 28.35. hope this helped bro.

-107.9°F is the melting point

Answer: -107.9°F

Explanation: Hopefully this helped have a blessed and good day!

Answer:

Asexual reproduction is faster than sexual reproduction

Answer:

Asexual reproduction is faster than sexual reproduction which is d

Explanation:

Answer:

chemical

Explanation:

A chemical change is irreversible and leads to the formation of new products.

Rusting occurs as a result of an irreversible chemical reaction between iron, oxygen and moisture. Rusting is the oxidation of iron when exposed to oxygen and moisture.

The rusting of iron is an electrochemical process in which water serves as the electrolyte and iron serves as the anode. The rusting of iron leads to the formation of hydrated iron III oxide (rust) usually seen an brown flakes that surround a rusted iron material.

Answer:

Comparative Anatomy:

5. Comparative anatomy is the comparative study of the body structures of different species of animals in order to understand the adaptive changes they have undergone in the course of evolution from common ancestors.

One way whales are different from fish is:

1) Whales actually breathe air with lungs using their blowholes to breath out!. Fish get oxygen directly from the water through their gills.

Hope this helps! :D

Heat or light could make a decomposition reaction occur. Therefore, option (A) is correct.

The decomposition reactions can be described as in which one reactant breaks into one or more products during the reaction.

The decomposition reaction can be represented as the following equation:

AB     →    A    +   B

Where AB is the parent molecule that acts as a reactant and gives A and B as products.

A decomposition reaction can be possibly an exothermic reaction or endothermic reaction. Thermal decomposition reactions are those in which the energy is supplied to reactant molecules for the decomposition.

For example, the decomposition of calcium carbonate is a thermal decomposition reaction. In the products, carbon dioxide gas and calcium oxide are produced. The decomposition of ozone gas occurs in the presence of light.

Therefore, heat or light can make the decomposition reaction take place.

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Materials obtained from petroleum refining

Answer:

Examples are Petrol,diesel ,etc

The oxidation state of iron changes from 0 to +3, and of oxygen changes from 0 to -2.

Oxidation state of any atom will tells about the number of exchangeable electrons.

Given chemical reaction is:

Fe + O₂ → Fe₂O₃

Initially in the reactant form, oxidation state of iron (Fe) atom and oxygen (O₂) molecule is zero as they are in elemental form. Oxidation state of 2 iron atoms in the product (Fe₂O₃) is +3 as it is combined with the 3 atoms of oxygen whose oxidation state is -2.

Hence, oxidation state of Fe and oxygen changes as we going from reactants to product side.

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Answer:

B and A

Explanation:

Answer:

yes.

Explanation:

the definition of a redox reaction is a chemical reaction in which electrons are transferred between two reactants participating in it, meaning, thermal decomposition is a chemical reaction where a substance is being broken down hence, electrons being transfered.

Answer:

electrone is a subatomic particle whose electric charge is negative one elementary charge.

civil rights are the rights that people have to equal treatment and equal opportunities.

in physics, force is an influence that can change the motion of an object.

Explanation:

[tex]22.4 lit[/tex]