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BartSMP [9]
3 years ago
11

Which of the following is NOT true of protein quaternary structure?

Chemistry
1 answer:
AVprozaik [17]3 years ago
3 0
The choices for this question can be found elsewhere and as follows:

<span>A. A single polypeptide may have quaternary structure.
B. Hydrogen bonds may hold the polypeptides in contact.
C. A quaternary protein cannot have fewer than two carboxyl groups.

I think the correct answer from the choices is option A. The statement a </span>single polypeptide may have quaternary structure is not true. 
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An object has a mass of 6.8 g and volume of 34 mL. What is the density of the object?​
jenyasd209 [6]

Answer:

<h2>Density = 0.2 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

<h3>Density =  \frac{mass}{volume}</h3>

From the question the points are

mass = 6.8 g

volume = 34 mL

Substitute the values into the above formula and solve

That's

<h3>Density =  \frac{6.8}{34}</h3>

We have the final answer as

<h3>Density = 0.2 g/mL</h3>

Hope this helps you

7 0
3 years ago
How many nonmetals are there on the periodic table?
ZanzabumX [31]
There are 17 nonmetals
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3 years ago
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Which factor is responsible for the red color of Mars? Select one of the options below as your answer:
pochemuha
C.) iron oxide <span>is responsible for the red color of Mars.

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8 0
3 years ago
6. A student dissolved 1.1 g of solid NaOH in 22.1 mL of water inside a constant-pressure
mote1985 [20]

From the calculations, the heat of the reaction is 44.4 kJ/mol.

<h3>What is the enthalpy of reaction?</h3>

The enthalpy of reaction refers to the amount of heat that is absorbed or evolved in a reaction.

Number of moles of NaOH = 1.1 g /40 g/mol = 0.0275 moles

Mass of the water = 22.1 mL or 22.1 g

Given that;

H= mcdT

H = 22.1 g *4.184 * (31.4 - 18.2)

H = 1221 J or 1.221kJ

ΔH rxn = -(1.221kJ)/0.0275 moles

ΔH rxn = 44.4 kJ/mol

Learn more about enthalpy:brainly.com/question/15319033

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8 0
2 years ago
insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 325 mL of insu
prohojiy [21]
To determine the total mass of insulin in the bottle, we simply need to multiply the volume of the contents to the concentration of the insulin. We cancel the volume units, then get the total mass with units of mg.

mass of insulin = 35 mL ( 20.0 mg / mL ) = 700 mg insulin

Hope this answers the question. Have a nice day.
3 0
3 years ago
Read 2 more answers
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