Which of the following most accurately describes a regulatory molecule that must be transported to its place of action within the body?

hormone

polypeptide

enzyme

Answers

Answer 1

Answer:

the answer is hormone

Explanation:

because it is


Related Questions

How many moles of NO2 form when
63.25 g N2O5 decompose?
2N2O5→ 4NO2 + 0₂

Answers

Answer:

1.1713 moles

Explanation:

RFM of N2O5= (14*2)+(16*4)=108

Moles of N2O5= Mass/RFM= 63.25/108= 0.5856 moles

Mole ratio of N2O5:NO2 = 2:4

Therefore moles of NO2= 4/2*0.5856= 1.1713 moles

Which of the following choices is NOT a consequence of incomplete combustion?
A. Carbon monoxide blocking oxygen in the blood.
B. Heavy metals leaking into groundwater and damaging the nervous system.
C. Carbon particles causing breathing problems.
D. Carbon particles making buildings dirty.

Answers

Carbon monoxide blocks oxygen in the blood. Hence, option A is correct.

What is combustion?

Combustion is a chemical process or a reaction between Fuel (Hydrocarbon) and Oxygen.

During incomplete combustion part of the carbon is not completely oxidized producing carbon monoxide (CO). Incomplete combustion uses fuel inefficiently and carbon monoxide is released.

Carbon monoxide gas diffuses rapidly across the pulmonary capillary membrane, binding to haemoglobin with an affinity 200 times that of oxygen to form carboxyhemoglobin. By displacing oxygen, CO decreases the oxygen-carrying capacity and oxygen delivery to tissues, causing marked cellular hypoxia and acidosis.

Hence, option A is correct.

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What does the author predict about the future of the Earth's mantle? Do you support his educated guess? Use complete sentences to answer.

Answers

The earth's mantle will not change in the future because this region is safe from the intervention of human beings.

What happens in the Earth's mantle?

The transfer of heat and material in the mantle helps us to determine the landscape of Earth. Activity in the mantle moves the plate tectonics, that contributes to volcanoes, seafloor spreading, earthquakes, and building of mountains.

So we can conclude that the earth's mantle will not change in the future because this region is safe from the intervention of human beings.

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How many individual Ni atoms are contained in 1.25 grams of Ni? (Input your answer with scientific notation using "e-notation" and report your answer to two places past the decimal point.

Answers

Answer:

Ni atoms are contained in 1.25gram is 1.28e22 atoms.

Explanation:

Ni atoms are contained in 1.25gram is 1.28e22 atoms.

We have a Nickel(Ni)  atom . The atomic number of Ni is 28 .It is a silvery-white metal with a slight golden tinge. Ni belongs to the transitional metal series.

The electronic configuration of Ni = Ar4d⁸35²

Nickel is slowly oxidized by air at room temperature.

Nickel is a ferromagnetic element at approximately room temperature.

To answer the problem , we first need to divide by the molar mass of Ni to get the moles of Ni. And then we will multiply by Avogadro's number to find the number of Ni atoms.

Molar mass of Ni = 58.7gm

Given mass of Ni = 1.25gm

Avogadro’s No. = 6.022 × 10²³ atom/mole

                    Moles of Ni = Given mass/Molecular mass

                                          = 1.25/58.7 = 0.0213

                    Moles of Ni = 0.0213

Now ,

       Number of Ni atom = Avogadro’s number × Moles

So that,

                No. of Ni atom = 6.022 × 10²³× 0.0213

                                            = 0.128 ×10²³  atoms

                                           = 1.28 × 10²² atoms

                                           = 1.28e22

So there are 1.28 × 10²² individual Ni atoms are contained in 1.25 grams of Ni.

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Which shows a monosaccharide?

Answers

Monosaccharides are the group of carbohydrates that are the simplest form of sugar. Option A galactose is a monosaccharide sugar.

What are monosachharides?

Monosaccharides are simple sugars and are the fundamental unit of carbohydrates.

The general structural formula for the monosaccharides is (CH₂O)ₙ

The structure of the monosaccharide sugar contains carbon, oxygen, and hydrogen molecules in their structure.

Galactose that is a simple sugar with six carbon atom rings Hence,  option A is a correct option

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All of the following are physical properties except a. density b. colour c. reaction with oxygen d. melting point

Answers

C! That’s a chemical change :)

Answer:

C

Explanation:

a, b and d   are physical properties ..... the compound or element in question has not changed its identity

   c    when combined with oxygen, it has changed to a different compound via CHEMICAL property.

would mean alot to help

Answers

Answer:

n

Explanation:

nobody knows

Answer: O

Explanation:

Out of the given elements, oxygen has the highest electronegativity.

can see all wavelengths/photons of light emitted from excited electrons.

Answers

No, all wavelengths/photons of light are emitted from excited electrons.

What is wavelength?

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

When an atom's electrons move to a lower energy state, the atom releases energy in the form of a photon. Depending on the energy involved in the emission process, this photon may or may not occur in the visible range of the electromagnetic spectrum.

Hence, no, all wavelengths/photons of light are emitted from excited electrons.

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10.5 mL of an unknown solution are diluted to 80.0 mL. The concentration of the
new solution was determined to be 0.172 M. What was the molarity of the
unknown solution? (Report your answer to two places past the decimal point.
Moodle is looking for a number only, no units.)

Answers

The molarity of the unknown solution will be 1.310 M.It is denoted by M₂.

What is molarity?

Molarity is defined as the ratio of the moles to the volume of the solution.

Given data;

Volume of unknown solution,V₁ = 10.5 mL

The volume of diluted solution,V₂ = 80.0 mL

Molarity of new solution,M₁ = 0.172 M

Molarity of unknown solution, M₂=?

For dilution we use the formula as;

M₁V₁=M₂V₂

M₂=M₂V₂/V₁

M₂ = ( 80 × 0.172 ) / 10.5

M₂= 1.310 M

Hence the molarity of the unknown solution will be 1.310 M.

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Which statement best describes how changing the temperature of a solution
affects the rate of reaction?
A. Increasing the temperature of a solution increases the
concentration of the reactants.
B. Decreasing the temperature of a solution increases the rate of
reaction.
C. Increasing the temperature of a solution increases the rate of
reaction.
D. Decreasing the temperature of a solution increases the
concentration of the reactants.

Answers

C. increasing the temperature of a solution increases the rate of reaction.

This is because increasing the temperature gives particles more kinetic energy, thus resulting in more effective collisions.

What is the mass in grams of 4.85 x 10^22 Al atoms? (Report your answer to two places past the decimal

Answers

Answer:

2.17 gm Al

Explanation:

First, find the number of moles .   Then multiply by the mole weight of aluminum.

# moles =   4.85 x 10^22 / 6.022 x 10^23 = .08053 moles

.0805 moles * 26.981 gm/mole  = 2.173 gm

which type of scientist would most likely study how the size of the lemming population affects the size of the snowy owl population?
A. A biologist
B. A sociologist
C. A chemist
D. A physicist
HELP PLS

Answers

The type of scientist would most likely study how the size of the lemming population affects the size of the snowy owl population is a biologist.Thus, the correct option is (D)

What Biologist does ?

Biologists study humans, plants, animals, and the environments in which they live.

They may conduct their studies--human medical research, plant research, animal research, environmental system research--at the cellular level or the ecosystem level or anywhere in between.

Hence, The type of scientist would most likely study how the size of the lemming population affects the size of the snowy owl population is a biologist.Thus, the correct option is (D)

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What causes ionic bonding between two atoms?

Answers

Answer:

Ionic bonding happens when an atom of an element gives one or more of its electrons to the other element's atom..it usually takes place between metal and non metal atoms...like in NaCl, Na gives its valence electron to chlorine and completes its own octet. Chlorine accepts the electron and completes its own octet too...but now both the atoms have an opposing charge and hence they attract each other to form an IONIC bond.

Ionic bonds are the strongest of the bonds...here complete transfer of electrons takes place unlike covalent bonds.

HOPE IT HELPED..

:)

Answer:

The electrostatic interaction between an anion and cation

The scientists who have contributed to our current body of knowledge were
from what part of the world?

A. All areas of the world

B. Mostly Europe

C. Mostly the Middle East

D. Only the United States
SEMIT

Answers

Answer:

A.

Explanation:

Well, Nicola Tesla was from Croatia.

Albert Einstein was from Germany.

Thomas Edison was from the U.S.

So I think all over.

All areas of the world (A)

What mass of sodium chloride (nacl) forms when 7.5 g of sodium carbonate (na2co3) reacts with a dilute solution of hydrochloric acid (hcl)? type in your answer using the correct number of significant figures. na2co3 2 hcl → 2nacl h2o co2 7.5 g na2co3 = g nacl

Answers

Answer:

8.3 g of NaCl

Explanation:

Edge 2022

Answer:

8.3 g NaCl

Explanation:

Its right just type it in

It requires 2,500 joules to raise a certain amount of water (c = 4.186 j/g°c) from 20.0°c to 60.0°c. what is the mass of the water that is being heated? 15 g 40 g 63 g 80 g

Answers

Answer:

15 grams of water will absorb 2,500 Joules  in going from 20.0 to 60.0 C.

Explanation:

The heat involved in raising a mass (m) of a substance with a specific heat (c) from one temperature to another (Delta T) is given by:

Heat = mc(Delta T)

2,500 Joules = m*(4.186J/gC)*(60C-20C)

2,500 Joules = m*(4.186J/gC)*(40C)

2,500 Joules = m*(4.186J/gC)*(40C)

m = (2,500J)/(4.186*40J/g)

m = 14.93 grams

Answer: B (15g)

Explanation:

Please answer one question. thanks so much if u do
What is the substance produced by a chemical reaction called?
a) Reactant
b) Product
c) Resultant
d) Reagent
e) Summation

What kind of chemical reaction involves oxygen and another substance producing water and carbon dioxide?
a) Synthesis reaction
b) Decomposition reaction
c) Combustion
d) Single displacement
e) Photochemical reaction

What does a catalyst do to a chemical reaction?
a) Stops the reaction
b) Starts the reaction
c) Speeds up the rate of reaction
d) Slows down the rate of reaction
e) None of the Above

Answers

Answer:

b) Product

c) Combustion

c) speeds up the rate of reaction

Explanation:

the substance produced by a chemical reaction is called a product (b)

Combustion (c) reactions are involving oxygen and "another substance" [and hydrocarbons] to produce carbon dioxide and water.

A catalyst acts to speed up the rate of a reaction (c)

 > note how it "speeds up" reaction: , it [a catalyst] lowers the pressure or temperature needed to start one--but it isn't used/consumed in the reaction

So, the answers are: b, c, c

hope this helps!!

The answer is b product

50 atoms, 15 were isotope A, 30 were isotope B, and 5 were isotope C, which isotope would be the most abundant?

Answers

The most abundant isotope among the given Isotopes will be Isotope B

How to calculate percentage abundance of isotopes ?

To calculate the percent abundance of each isotope in a sample of an element, we usually divide the number of atoms of a particular isotope by the total number of atoms of all isotopes of that element and then multiply the result by 100.

For  Isotope A ;

% Abundance =  15/50 x 100

                        =  30 %

For  Isotope B ;

% Abundance =  30/50 x 100

                        =  60 %

For  Isotope A ;

% Abundance =  5/50 x 100

                        =  10 %

Hence, The most abundant isotope among the given Isotopes will be Isotope B.

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If 1.32 g MgO is combined with 100.0 mL of 1.00 M HCl in a coffee cup calorimeter, the temperature of the HCl solution increases from 24.2 °C to 34.4 °C. Calculate the enthalpy change for the reaction per mole of MgO. Assume that the specific heat of the HCl solution is 4.18 J/g·°C and its density is 1.00 g/mL.

MgO(s) + 2HCl (aq) MgCl2 (aq) + H2O (l)

Answers

The change in enthalpy for the reaction per mole is -130KJ/mol.

Given,

Reaction: MgO(s) + 2HCl (aq) →MgCl₂ (aq) + H₂O (l)

1.32 g MgO is combined with 100.0 mL of 1.00 M HCl in the cup of coffee.

Change in temperature, ΔT=34.4 °C-24.2 °C =10.2°C

Specific heat of the HCl solution, c= 4.18 J/g·°C

Density= 1.00 g/mL

Mass can be written as the product of density and volume.

Mass= Density × Volume= 1g/ml × 100 ml=100g

Heat can be written as

Heat, Q=mcΔT=100g×4.18 J/g·°C×10.2°C=4263.6J

Number of moles of the MgO,

n= (mass of MgO)/(Molar mass)= 1.32g/(40.3g/mol)= 0.03275 mol

Change in Enthalpy, ΔH=-Q/(n)=(-4263.6J)/(0.03275 mol)

ΔH= -1300186J/mol= -130KJ/mol

Hence, the change in enthalpy for the reaction per mole is -130KJ/mol.

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How do you test for hydrogen?

Answers

To test for hydrogen, burn a candle near the suspected source of hydrogen. If you hear a squeaky pop sound, hydrogen is present because when hydrogen gas burns, it makes a squeaky pop sound.

Hydrogen burns with a loud pop in when a burning splint is held near it.

Test for hydrogen

There are a couple of ways to test for hydrogen. However, the simplest and most popular way is to bring a burning splint near a container containing hydrogen gas.

The production of a loud squeaky pop sound indicates the presence of hydrogen gas. All precautions should, however, be observed.

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How many liters of a 0.80 M
solution can be made with 2.0 mol
KNO3?

Answers

Answer: 2.5

Explanation: you devide mol solute which is 2.0 and the L solution which is 0.80M, and after you divide the two you get 2.5

i also had this question <3

The molarity is an important method to calculate the concentration of a solution. The volume of potassium nitrate of 0.80 molarity and 2.0 mol moles is  2.5 L.

What is molarity?

The molarity of a solution is defined as the number of moles of the solute present per litre of the solution. It is mainly employed in calculating the molarity of a binary solution. It is represented as 'M' and unit is mol L⁻¹.

The equation used to calculate the molarity is given as:

Molarity = Number of moles of the solute / Volume of the solution in litres

Here molarity = 0.80 M

Number of moles = 2.0 mol

Then the volume of the solution =  Number of moles of the solute / Molarity

Volume = 2.0 / 0.80 = 2.5 L

Thus the volume of the solution is 2.5 L.

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GIVING 17 POINTS PLS HELP ME!!!!
Which of the following statements is true about hydropower?
A. It releases carbon dioxide.
B. It can produce harmful chemicals.
C. It can affect fish and other marine life.
D. It uses gas trapped under Earth's surface.

Answers

Hydropower can affect fish and other marine life which is the true statement and is denoted as option C.

What is Hydropower?

This is the process in which water energy is converted into electrical energy through the use of dams and turbines.

When the dams are created, it blocks the path of marine activities and limits them to certain activities such as reproduction.

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Which statement best describes how the scientific community analyzes data?
OA. A scientist must always keep his or her data hidden from other
scientists.
B. There is only one possible conclusion to be drawn from a set of
data.
OC. Each scientist must use his or her own, unique data.
OD. Scientists can come to different conclusions based on the same
data.
SUBMIT

Answers

Answer: D. Scientists can come to different conclusions based on the same data.

scientists can come to different conclusions based on the same data

What is the noble gas configuration for tellurium (Te)?
The Periodic Table
OA. [Kr] 5s²4d105p4
O B. [Kr] 5s25p65d8
O C. [Xe] 5s25065
O D. [Xe] 5s24d1¹05p4

Answers

The correct answer to this question is option A.

How many liters of a 0.80 M
solution can be made with 2.0 mol
KNO3?
{?} L

Answers

Answer:

Explanation:

Solution

Verified by Toppr

2 molL

−1

Explanation :

Concentration =

Volume of solution

Moles of solute

We assume that potassium nitrate dissolves in the given volume of solvent without gross change in volume.

Concentration =

101.10gmol

−1

404g

The temperature of a thermometer
increases during a chemical reaction.What happens to the energy of the reaction (system)?
A. The reaction releases energy (- or exothermic).
B. The reaction absorbs energy (+ or endothermic).
C. The reaction does not cause an energy change.

Answers

Answer:

B. the reaction absorbs energy (+ or endothermiic)

Take a small amount of water and milk in two different but similar container's. Freze them by putting them in a refrigerator .NOw melt them,in the sunshine,boil them on the same stove under the same condition ,and evaporate them completely .note there time during changing of their states .what similarities and differences you find while changing the states of noth of the materials

Answers

All liquids evaporate if exposed to certain elements.

What is Evaporation ?

Evaporation is the process by which water changes from a liquid to a gas or vapor.

Evaporation is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor.

All liquids evaporate if exposed to certain elements.

The rate at which a liquid evaporates depends on its molecular structure.

The other factors that affect evaporation are surface area, temperature and air movement.

We can also do a few fairly simple experiments to demonstrate the effect that the various factors have on the rate of evaporation.

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A graduated cylinder is filled to 12.5 mL
with water and a piece of tin is placed
in the cylinder, displacing the level to
16.8 mL.
What is the volume of the tin piece in
cubic centimeters?
[?] cm³
Record your answer to the tenths place.
Volume (cm³)

Answers

The volume of the tin piece in cubic centimetres is 4.3 cm³

What is a graduated cylinder?

A graduated cylinder is a standard piece of laboratory glassware used to measure the volume of an object or amount of liquid. As its name indicates, it is a glass cylinder with marks along the side similar to those on a measuring cup.

When adding an object to a liquid, the displayed volume difference corresponds to the volume of the added object.

In this way, to find the value of the object's volume, subtract the initial volume from the final volume:

16.8ml - 12.5ml = 4.3ml

To convert to cubic centimetres, the conversion scale of volume and length measurements need to be used, finding that mL is equal to cubic centimetres. So, the final answer is:

4.3 cm³

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heating up a reaction increases the speed of a reaction until the ____

Answers

Heating up a reaction increases the speed of a reaction until the enzyme denatures.

What is enzyme denaturation?

Enzyme denaturation occurs when a biological protein catalyst does not work anymore due to a high temperature that alters its tridimensional conformation.

This cellular process (denaturation) is well known to be one of the main causes of enzymatic failure.

In conclusion, heating up a reaction increases the speed of a reaction until the enzyme denatures.

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Two samples contain sulfur and
oxygen in the amounts shown in the
data table. What is the mass percent
of sulfur in compound B?
Sample Mass S (g) Mass 0 (g)
A
32.0
48.0
B
30.0
30.0

Answers

Answer:

Sample A=40 Sample B=50

Explanation:

32+48=80

32/80x100=40

The 100 is to convert it to a percentage

___________________________

Sample B

same thing

30+30=60

30/60x100=50

The mass percent of sulfur in compound B is 50 %

What is mass percent?

Mass percent is defined as a way of expressing a concentration or describing the component in a particular mixture.

It can also be defined as a mass of a element or solute divided by the mass of compound or solvent.  

Mass percent of sulfur of sample A

= 32 + 48 = 80

= 32 / 80 x 100

= 40 %

Mass percent of sulfur of sample B

= 30 + 30 = 60

= 30 / 60 X 100

= 50 %

Thus, the mass percent of sulfur in compound B is 50 %

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Other Questions
I need to use factorial the! When you use the binomial probability formula and I need to show step-by-step for for a through cGiven the number of trials and the probability of success, determine the probability indicated: (Hint use binomial distribution formula use factorials ! in showing your work)n = 15, p = 0.4, find P(4 successes) n = 12, p = 0.2, find P(2 success ) n = 20, p = 0.05, find P(at most 3 successes) (hint for c. P (at most 3 successes) = P(x 3)= P(x= 0) + P(x = 1)+ P(x = 2)+ P(x = 3) 1. Read the cartoon and answer the questions bellow. a. Indentify how many times you can see the 'verb to be: b. Find an interrogative sentence with verb to be: c. Translate the words wondering' and 'understand: e. They f. She AM ALWAYS NONDERING IFI REALLY AM very angry. a teacher. at home. from Brazil. a b C 2. Complete the sentences with the forms of to be in the present simple (am, is, are). a. We in the shopping mall. b. The dog inside the house. . d. You IT IS HARD TO NDERSTAND SIZE heavy, light, big, small, little, tiny, tall, short, fat, thin, skeletal, giant, 3. Choose three sentences from the last exercise and put in the negative and interroga Use the examples to help you. Example: Affirmative: She is beautiful. / Negative: She is not beautiful. / Interrogative: Is she GNIT SHE HAPPY SHAPE round, square, straight, triangular, oval, sleek, blobby, flat, elliptical, www. 4. Describing animals. In the boxes below you will find many adjectives you can use to describe the differ Can you also come up with suggestions of your own for describing the many a COLOUR pink, red, orange, black, yellowish, blue, dark, green, purple, white, S quick, speedin bustlin 1. Read the cartoon and answer the questions bellow . a . Indentify how many times you can see the ' verb to be : b . Find an interrogative sentence with verb to be : c . Translate the words wondering ' and ' understand : e . They f . She AM ALWAYS NONDERING IFI REALLY AM very angry . a teacher . at home . from Brazil . a b C 2. Complete the sentences with the forms of to be in the present simple ( am , is , are ) . a . We in the shopping mall . b . The dog inside the house . . d . You IT IS HARD TO NDERSTAND SIZE heavy , light , big , small , little , tiny , tall , short , fat , thin , skeletal , giant , 3. Choose three sentences from the last exercise and put in the negative and interroga Use the examples to help you . Example : Affirmative : She is beautiful . / Negative : She is not beautiful . / Interrogative : Is she GNIT SHE HAPPY SHAPE round , square , straight , triangular , oval , sleek , blobby , flat , elliptical , www . 4. Describing animals . 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PLEASE EXPLAINE.12 ftF.14ftG.16 ft H.!8ft Which are two possible reasons for the change within the frog population?3.2, 4.8, 7.2, 10.8, Fill in the blanks find P A And si Help me to solve this answer below :((!!! 1Select the correct answer.What is a useful question to consider before reading a text for the central ideas?OA.What do you predict the text will be about?OB. What does the first paragraph reveal about the ideas?OC. How would you summarize the important events in the text?OD. How will the text end? How much does the federal government collect in taxes?. Which sentence shows the logical fallacy of authority?O My opponent raises a good point, but can we really trust him? I mean, he moved to this town onlytwo years ago and everyone knows that his wife left him.O Many women claim that they want to live in a peaceful world, but we must remember that therewere no nuclear weapons before women were given the right to vote.O Studies show it takes up to seven years for the human body to digest a piece of gum.I'm raising funds to help cure XYZ disease. If you don't donate, then you're part of the problem. Which piecewise defined function is shown on thegraph?f(x) =f(x)f(x)=f(x) =DONEx+ 2, if 0 < x "This is Aunt ____ and Uncle ___. Congratulations! Your photos and dress are sooo beautiful! So happy for you. Beautiful inside and out."how do i respond to this message? for context their talking about my grad photos and they live in Florida so i havent seen them in years __________ typically are used to display continuous measures. Es necesario que los tringulos congruentes tengan el mismo tamao? It takes 405 bricks to build 1 wall of a room. If there are 5 rooms (with 4 walls each), how many bricks will be needed to build all the walls?