DNA Discovery Check-In

After watching the video, organize what we know about Proteins, DNA, and the discovery of the genetic material.

Groups:

(a) Proteins

,

(b) DNA

• Is made of Amino Acids

• Scientists thought: this molecule is more complicated it's probably the genetic code

• 20 Different Kinds

• Is made of Nucleic Acids

• 4 Different Kinds

• Makes up most of the interesting stuff in our bodies (blood, tissues, ect.)

• Found in the nucleus of cells

• Scientists thought: this molecule is too simple so it can't be the genetic code

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The question of whether the genetic material was protein or DNA was finally settled in an experiment with bacteria.

What 2 results did the scientists get that proved that it was DNA was that passed on genetic traits?

• They took harmless bacteria and gave it DNA from a deadly bacteria. It then became deadly too

• They took harmless bacteria and gave it proteins from a deadly bacteria. It did not change and stayed harmless

• They took harmless bacteria and gave it DNA from a deadly bacteria. It did not change and stayed harmless

• They took harmless bacteria and gave it proteins from a deadly bacteria. It then became deadly too

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The DNA molecule is made up of subunits called . . .

• carbohydrates
• phospholipids
• nucleotides
• amino acids

What are the 3 chemical parts that make up a single Nucleotide in DNA?

d

e

f

Nitrogen Base

Sugar

Phosphate

Salt

Potassium

Amino Acid

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Check the names of all the 4 Nitrogen Bases.

• Uracine

• Thymine

• Adenine

• Guanine

• Cytosine

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The first person to take a clear X-Ray picture of the structure of DNA was​ (a)  

• Rosalind Franklin
• James Watson
• Francis Crick
• Maurice Wilkins
• Erwin Chargaff

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Add the 2 names to the sentence in Alphabetical Order:

​ (a)   and ​ (b)   used the discoveries of others to finally figure out the structure of DNA and build a model of it.

• James Watson
• Francis Crick
• Maurice Wilkins
• Erwin Chargaff
• Rosalind Franklin

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Proteins are often called the ​ (a)   of life because when ​ (b)   properly, they can make ​ (c)   numbers of things.

• building blocks
• arranged
• endless
• specific
• examined
• genetic code

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Proteins and DNA are related to each other. ​ (a)   holds the code that tells the body how to arrange the ​ (b)   into the right shape to make a ​ (c)   .

• DNA
• amino acids
• protein
• nucleic acids
• fatty acids

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To make a protein, the DNA makes a partial ​ (a)   of itself inside the ​ (b)   . That message is sent to a special organelle in the cell called a ​ (c)   . This organelle reads the DNA ​ (d)   at a time to figure out ​ (e)   amino acid to add to the new protein.

• copy
• nucleus
• ribosome
• 3 letters
• which

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