Question

Which of the following monomers would be used to make the double helix of a DNA molecule?

Answer 1

I don't know what your choices are, but purines and pyrimidines bases make up DNA.

Answer 2

Hold on the for the choices.

Answer 3

well guanine , Cytosine thymine and adenine are the bases, any one of which join with one ribose suger and 3 phosphate groups to make a specific monomer

Answer 4

This is choice 1.

Answer 5

This is choice 2.

Answer 6

This is choice 3.

Answer 7

This is choice 4.

Answer 8

Anyone?

Answer 9

dont u think choice 1 and 4 are same??

Answer 10

My bad. This is the real choice 1:

Answer 11

So...........?

Answer 12

then this 4th one is true one the others dont look right

Answer 13

So it is choice 4 correct?

Answer 14

yes as per my knowledge :)

Answer 15

Thank you.

Answer 16

your welcome :)

Answer 17

i think it's choice 3

Answer 18

choice 1 i'm pretty sure..

Answer 19

Are you people for real?

Take a look at this picture of a DNA double helix:
http://academic.brooklyn.cuny.edu/biology/bio4fv/page/molecular%20biology/dsDNA.jpg

And compare that with choice #1.

Same thing.

A DNA double helix is made of nucleotides.
Three parts:
1. Nucleobase
2. Sugar
3. Phosphate group

Answer 20

Are YOU real, witch?

Answer 21

@InYourHead choice 1 is a dimer not a monomer so choice 4 is is a single monomer and it completely matches your given pic too

Answer 22

Choice 1 is a monomer.

It's a nucleotide, and they are the monomers of nucleic acids.
DNA is a nucleic acid.

Nucleotides have 3 parts:

1. Nitogen base
2. Sugar
3. Phosphate group

The picture that I posted is a picture of a DNA ladder.

When two nucleotide monomers join together,
they make one rung of the DNA ladder.

Answer 23

Just so we're on the same page....

This is choice 4:
http://assets.openstudy.com/updates/attachments/51f2b340e4b00daf471baca2-r115-1374860602016-image4.4.jpg

And this is my picture:
http://academic.brooklyn.cuny.edu/biology/bio4fv/page/molecular%20biology/dsDNA.jpg

How do they match?

This is Option 1. The nucleotide:
http://assets.openstudy.com/updates/attachments/51f2b340e4b00daf471baca2-r115-1374860962480-image1.115.jpg