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12 DNA Coloring

1. The document provides a worksheet on DNA structure that instructs students to color different parts of the DNA double helix model, including phosphates, deoxyriboses, nitrogen bases, nucleotides, and hydrogen bonds. 2. It explains that DNA has a double helix shape with alternating sugar and phosphate molecules on the sides, and pairs of nitrogen bases - adenine, guanine, thymine, and cytosine - forming the rungs, with adenine always bonding to thymine and guanine to cytosine. 3. The worksheet asks students to answer questions about DNA structure, including the full name of DNA, what genes and chromosomes are, who established the structure of DNA, the shape of

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680 views2 pages

12 DNA Coloring

1. The document provides a worksheet on DNA structure that instructs students to color different parts of the DNA double helix model, including phosphates, deoxyriboses, nitrogen bases, nucleotides, and hydrogen bonds. 2. It explains that DNA has a double helix shape with alternating sugar and phosphate molecules on the sides, and pairs of nitrogen bases - adenine, guanine, thymine, and cytosine - forming the rungs, with adenine always bonding to thymine and guanine to cytosine. 3. The worksheet asks students to answer questions about DNA structure, including the full name of DNA, what genes and chromosomes are, who established the structure of DNA, the shape of

Uploaded by

lightning Tiger
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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Name: _____________________________________ Date: ______________ Period: ________

DNA Structure Worksheet


In 1953, James Watson and Francis Crick established that the structure of DNA is a double helix. A
double helix is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate
molecules. The sugar is deoxyribose. Color all the phosphates brown (one is labeled with a "p"). Color
all the deoxyriboses blue (one is labeled with a "D").

The rungs of the ladder are pairs of 4 types of nitrogen bases. They are called adenine, guanine,
thymine, and cytosine. The bases are known by their coded letters A, G, T, C. These bases always bond in
a certain way. Adenine will only bond to thymine. Guanine will only bond with cytosine.
Color the thymines orange. Color the adenines green.
Color the guanines purple. Color the cytosines yellow.

The combination of a single base, a deoxyribose sugar, and a


phosphate make up a nucleotide. The DNA molecule is made of
repeating nucleotides. Color the parts of the nucleotide (make
sure to use the correct colors!). The two sides of the DNA ladder
are held together loosely by hydrogen bonds. The DNA can
"unzip" its hydrogen bonds when it needs to replicate (make a
copy of) itself. The hydrogen bonds are represented by small
circles. Color the hydrogen bonds red.

Answer the following questions.

1. Write out the full name for DNA.

2.  What is a gene?

3.  Where in the cell are chromosomes located?

4.  What two scientists established the structure of DNA?


5.  What is the shape of DNA?

6. What are the sides of the DNA ladder made of?

7.  What are the "rungs" of the DNA ladder made of?

8.  What sugar is found in DNA?

9.  How do the bases bond?

A bonds with _____  G bonds with _____

10. DNA is made of repeating units called ______________.

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