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nata0808 [166]
3 years ago
6

A child with cystic fibrosis has a mutated protein in his cells which does not behave normally. The mutated protein stops chlori

de ions from leaving the cells. This causes water to be retained in the cell creating thicker fluids. These fluids cause a buildup of mucus which leads to breathing problems. Which cell structure is most likely being negatively affected by the mutated protein?
Chemistry
1 answer:
Helen [10]3 years ago
6 0

Answer:

Explanation:

lung air ways the mucus will clog it up causing asthma hope this helped :P

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Liquid nitrogen boils at –195.8°C. Express the boiling point of liquid nitrogen in kelvin
inessss [21]

Answer:

\boxed {\boxed {\sf 77.35 \ K}}

Explanation:

The Celsius and Kelvin scales are used to measure the temperature of matter.  Their scales and unit differences are the same (1 K increase = 1 °C increase), but they have different starting points.

So, the conversion is quite simple and only requires addition because of the different starting points. The formula is:

T_K = T_C+ 273.15

The boiling point of liquid nitrogen is -195.8 °C. We can substitute this value into the formula.

T_K= -195.8 + 273.15

T_K= 77.35 K

The boiling point of liquid nitrogen is 77.35 Kelvin.

4 0
3 years ago
All oxygen atoms have eight protons, and most have eight neutrons as well. What is the mass number of an oxygen isotope that has
denis-greek [22]

Answer: The mass number of an oxygen isotope that has nine neutrons is 17 and isotope is called as Oxygen-17.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

For a neutral atom:

Atomic number = Number of electrons = Number of proton

Atomic number= Number of protons = 8

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Given: Number of neutrons = 9

Thus mass number = Number of protons + Number of neutrons = 8 + 9 = 17.

Isotopes are elements which have same atomic number but different mass number.

Thus the mass number of an oxygen isotope that has nine neutrons is 17 and isotope is called as Oxygen-17.

5 0
3 years ago
Identify whether the description refers to a monomer, a polymer, or both. Macromolecule:
larisa86 [58]

Answer:

Macromolecule: polymer

Repeating units: monomer

Simple molecule: monomer

Covalent bonds: both

Explanation:

A macromolecule is a very large molecule commonly created by the polymerization of smaller subunits called monomers. They are typically composed of thousands of atoms or more.

A  monomer is a molecule that can be reacted together with other monomer molecules to form a larger polymer chain.

Polymers include bounds between nonmetal atoms, therefore, they are joint by covalent bonds

3 0
3 years ago
Read 2 more answers
Question 39 (1 point)
NemiM [27]

Answer:

volume = 2128L

Explanation:

volume at stp = 22.4dm³ =22400L

CO2 = 12 + 2(16) = 44

4.20/44 = volume/22400L

0.095 = volume/22400L

volume = 0.095 x 22400

volume = 2128L

5 0
3 years ago
an engineer chooses to use a composite material that incorporates concrete and recycled glass for the floors of a new building.
amid [387]
Green Design is your answer. :)
8 0
3 years ago
Read 2 more answers
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