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ELEN [110]
3 years ago
15

Explain the structure and function of DNA. What important roles does the phosphate-sugar backbone, nitrogen bases, complementary

strands, and hydrogen bonds play in the structure of DNA?
Chemistry
1 answer:
Lina20 [59]3 years ago
4 0
DNA structure is a helix . DNA function is to form the hereditary code of a living organism. This involves physical and acquired traits ( eyes, hair, skin, tendencies). The roles you listed above all are part of the biological chemistry involved in the DNA process.
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Which state of matter has particles that vibrate in a rigid structure
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Explanation:

Solids have definite shape and distinct boundaries as such the intermolecular forces between them is maximum

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In an experiment, what is the purpose of the control group?
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A control group is the comparison group that helps to "make sure your experiment works." A control group is separated from the rest of the experiment and nothing happens to it kinda like a controlled variable.  Controlled variables are the variables in a experiment that remains the same for example a temperature, time, type of products, etc..

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7 0
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At sea level, where the pressure was 104 kPa and temperature 21.1 ºC, a certain mass of air occupies 2.0 m3 . To what volume wil
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Answer:

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is 3.64 m^3.

Explanation:

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 104 kPa

P_2 = final pressure of gas = 52 kPa

V_1 = initial volume of gas = 2.0m^3

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 21.1^oC=273+21.1=294.1K

T_2 = final temperature of gas = -5.0^oC=273+(-5.0)=268 K

Now put all the given values in the above equation, we get:

\frac{104 kPa\times 2.0m^3}{294.1 K}=\frac{52 kPa\times V_2}{268 K}

V_2=3.64 m^3

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is 3.64 m^3.

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Two tectonic plates had the same density and a collision of the plates pushed the advancing plate that contained fossilized marine organisms upward forming the Himalayan mountains and Mount Everest.

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a group of unicellular microorganisms

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