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Answer: D?  

Explanation: The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. It is the power house of the cell; it is responsible for cellular respiration and production of (most) ATP in the cell.

Answer:

the answer is A

Explanation:

it is substrates because ,Enzymes are specialized proteins that catalyze or speed up chemical reactions within cells. The substance upon which an enzyme acts is called a substrate. Substrates are small molecules.

The substance on which the enzyme acts is called the substrate chemical. Therefore, the correct option is option A.

Enzymes are biological molecules that function as catalysts, facilitating and speeding up chemical reactions without being devoured or irreparably changed. The term "substrate" refers to the material that the enzyme reacts with.

An enzyme forms an enzyme-substrate complex when it comes into contact with its particular substrate and attaches to it at a location known as the active site. This contact makes the chemical reaction more rapid than it would be in the absence of the enzyme by lowering the activation energy necessary for the reaction to occur.

Therefore, the correct option is option A.

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Answer:

The higher the excitation state, the more energy the electron contains. When an electron absorbs energy, it jumps to a higher orbital. ... An electron in an excited state can release energy and 'fall' to a lower state.

Answer:

the higher the excitation state, the more the energy the electrons contains. when an electrons absorbs energy , it jumps to a higher orbital.

Explanation:

the electrons with its extra packet of energy becomes excited , and promptly moves out of its lower energy level and takes up a position in a higher energy level

Answer:

See explanation

Explanation:

Now we have, the graph attached.the stable disintegration product of C-14 is N-14.

Then;

Since the mass of C-14 originally present is 64g, at a time t= 17100 years, we will have;

N/No = (1/2)^t/t1/2

N = mass of C-14  at time t

No= mass C-14 originally present

t = time taken for  N amount of C-14 to remain

No = mass of C-14 originally present

t1/2 = half life of C-14

N/64 = (1/2)^17,100/5730

N/64 = (1/2)^3

N/64 = 1/8

8N = 64

N = 8 g

Answer:

The physician William Murrell was one of the first physicians to recognize the the clinical benefits of nitroglycerin in the treatment of the heart disease known as angina pectoris, a type of chest pain caused by reduced blood flow to the heart.

Explanation:

The physician William Murrell was one of the first physicians to recognize the the clinical benefits of nitroglycerin in the treatment of the heart disease known as angina pectoris, a type of chest pain caused by reduced blood flow to the heart. He also used nitroglycerin to treat and reduce high blood pressure. He used small diluted doses of nitroglycerin to treat patients with angina pectoris. Murrell published his treatment results in the article "Nitro-glycerine as a remedy for angina pectoris," in the journal The Lancet in 1879. Thereafter, the use of nitroglycerin as treatment procedure for angina pectoris soon became generally adopted by other physicians.

Nitroglycerin is a vasodilator which is a medicine that opens blood vessels in order to improve blood flow. Nitroglycerine acts to improve blood flow to the heart by opening up or dilating the coronary arteries in the heart, thereby reducing how hard the heart has to work in pumping blood round the body. It reduces preload by  dilating veins and reduces afterload moderately by dilating arteries.

Nitroglycerin comes in two forms: quick-acting forms and long-acting forms.

The quick-acting forms include tablets or oral sprays.

Long-acting forms include pills, tablets, skin ointment, and skin patches.

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question we have

[tex]volume = \frac{50.75}{11.3} \\ = 4.491150...[/tex]

We have the final answer as

Hope this helps you

Answer:

Na+ represents a sodium atom that has lost an electron.

Explanation:

An atom that has gained or lost electrons is called an ion.

Answer:

I think because of the positive radical it's carrying

Answer:

The answer would be meniscus.

Answer:

inertia

Explanation:

Answer:

Law of inertia, also called Newton's first law, postulate in physics that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Explanation:

hope it helps, please mark brainliest

Answer:

determines if a solution is acidic.

Explanation:

Answer:

The given statement is "True". A further explanation is provided below.

Explanation:

Therefore this obvious response is the right one.

Explanation:

prevent becoz crop rotation means using it by planting the crop according to nuetrients so ur soil is prevented

Answer:

Due to conduction, glob A will melt faster

Answer:

scattering is the direction of transmission absorption is the particle absorbs the energy of the photon

Explanation:

Answer:

Potassium < lithium <  Selenium < Oxygen

Explanation:

Oxygen has the highest electronegativity value from the given choices.

Electronegativity of an element is a property that combines the ability of its atom to lose and gain electrons.

It is a measure of the relative tendency with which atoms of the element attracts valence electrons in a chemical bond.

Potassium and lithium are in group 1 , selenium and oxygen are group 7;

 So group 1 elements will have lower electronegativity value.

Potassium is below lithium in group 1 and its electronegativity value will be lower.

Selenium is below oxygen and also, its electronegativity value is lesser.

The electronegativity values of lithium, oxygen, potassium, and selenium from lowest to highest is potassium, lithium, selenium and oxygen.  

The electronegativity of an element is a measure of the tendency of an atom of element to attract bonding pair of electrons. Electronegative elements have the ability to attract shared electrons of covalent bonds to itself.

The most electronegative element is fluorine. Electronegativity increases across the period in the periodic table .

Electronegativity decreases down the group in the periodic table. Generally metallic elements are have lower electronegativity. This is because they mostly give out there electrons.

Therefore,  the electronegativity values of lithium, oxygen, potassium, and selenium from lowest to highest is potassium, lithium, selenium and oxygen.  

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Answer:

the answer for your question is veins

Answer:

blood vessels aka veins

Answer:

A. People with perfect understanding of science

Answer

Explanation:

Recall that the land surface cools quicker than the water surface at night. Therefore, the warmer air over the ocean is buoyant and is rising. The denser cool air over the land is flowing offshore to replenish the buoyant warm air and is called a land breeze.

Answer:

Explanation:

Nuclear fusion of a form of nuclear reaction in which two small atomic nuclei combines to form larger ones with the release of a large amount of energy.

For example;

                ²₁H  +  ²₁H   →    ⁴₂He  + Energy

The energy released in a nuclear reaction provides the needed temperature for another set of ²H atoms to fuse. This process in turn yields another ⁴He with the release of a lot of energy. Thus, enormous release of energy accompanies a nuclear reaction.

It is based on this principle that an hydrogen bomb is formed.

Answer:

Where are the answer choices.......

Explanation:

Answer: 4.5 Years

Explanation:

8 -> 4 -> 2 -> 1

Substance goes through 3 Half-Lives

3 Half-Lives x 1.5 Years = 4.5 Years

Answer:

4.5 i think

Explanation:

The chemical balanced : A and B

Given

Chemical equation

Required

Balanced equation

Solution

A chemical equation is said to be balanced if the number of atoms in the reactants and the number of atoms in the product are the same

a. CO₂+H₂O⇒H₂CO₃

balanced

b. MgO+ 2HCI ⇒ MgCl₂ + H₂O

balanced

c. CaO + HCI ⇒ CaCl₂ + H₂O

the elements H and Cl are not balanced

d. K + H₂O ⇒ K₂O +H₂

element K is not balanced

Answer:

Br

Explanation:

Answer:

The cell is a plant cell because it has chloroplast, which helps the plant make its own food from sunlight.

Explanation:

Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.

Answer: 2.5L x 1mol/22.4 =  0.112 mol

Explanation:

Answer:

The answer is option 4.

Explanation:

Chloroplast is the place where they absorb sunlight to perform photosynthesis to produce food.

Answer:

Lemon juice because it has more of a sour taste to it than a watery taste like milk

Explanation: