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SVEN [57.7K]
3 years ago
11

Which of the following represents a difference between RNA and DNA?

Biology
1 answer:
WARRIOR [948]3 years ago
7 0
The answers D 
hope this helps
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A steel bar has a mass of 4,000 kilograms and a volume of 0.5 cubic meters . Calculate its density. Write your answer as a whole
mixer [17]

The equation for density is:


D=\frac{m}{V}


where the mass is in grams and the volume is in cm^{3}.


We are given 4,000 kilograms, and we know that there are 1,000 grams in 1 kilogram, so we need to multiply to convert to grams:


4,000*1,000=4,000,000g


We are also given 0.5 m^{3}, and we need to convert to cm^{3}. We know that there are 100 cm in 1 m, and since we are talking about cubic volume, we must also raise 100 to the 3rd power: 100^{3}=1,000,000cm. So now we know that there are 1,000,000 cm^{3} in 1 m^{3}. We need to then multiply 1,000,000 cm by 0.5 in order to find the volume that was given in the question:


1,000,000*0.5=500,000cm^{3}


So now that we have the correct units, let's plug them into the equation:


D=\frac{4,000,000g}{500,000cm^{3}}


D=\frac{8g}{cm^{3}}


So now we know that the density is 8g/cubic centimeter.

3 0
3 years ago
Buffers are substances that resist shifts in pH by
kondor19780726 [428]
D and E the H+ ones
5 0
3 years ago
(1) Cell membranes (plasma membranes) help organisms maintain__________ homeostasis by controlling what substances may enter or
Marianna [84]

Answer:

Explanation:

Active cellular transport:

  • It is the movement of molecules against the concentration gradient  (from low concentration to high).
  • Active transport requires expense of energy supplied by ATP.
  • It is a rapid way to transport of large sized molecules.

Passive cellular transport:

  • It is the movement of molecules along the concentration gradient (from high concentration to low).
  • Passive transport does not require expense of energy.
  • It is a slow process and small sized molecules get transprorted.
7 0
3 years ago
In DNA and RNA, what “codes for amino acids”?
Stels [109]

Answer:

DNA: Three nucleotides encode an amino acid. Proteins are built from a basic set of 20 amino acids, but there are only four bases. Simple calculations show that a minimum of three bases is required to encode at least 20 amino acids.

RNA: You can think of the sequences of bases in the coding strand of DNA or in messenger RNA as coded instructions for building protein chains out of amino acids. There are 20 amino acids used in making proteins, but only four different bases to be used to code for them. Obviously one base can't code for one amino acid.

4 0
3 years ago
All you need is in the photo ​
yulyashka [42]

Try 2 i just did some research so try 2 HOPE this helped!....

5 0
3 years ago
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