DNA Structure

DNA Structure

What does DNA look like?

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​2) Title this page

3) Write the question below.

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Multiple Choice

Where can Deoxyribonucleic Acid (DNA) be found in eukaryotic cells?

• mitochondria

• nucleus

• in the cytoplasm

• cell membrane

Multiple Choice

In the last shot of the video, Joseph Graves Jr. evolutionary biologist says, "DNA is the molecule of______".

• proteins

• humans

• heredity

• discovery

Multiple Choice

What does DNA stand for?

• Deoxyribonucleic Acid

• Deoxyglucoucleic Acid

• Demonic Acid

• Destabilizing Amoeba

Before we watch the video, here are the questions you need to be able to answer.

1. How much DNA is in each human cell?

2. How much DNA is in all human cells combined?

3.How is DNA “packaged”?

4.How many chromosomes do humans have?

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​1) How much DNA is in each human cell?

​2) How much DNA is in all human cells combined?

​3) How is DNA "packaged"?

​4) How many chromosomes do humans have?

Multiple Choice

How much DNA is in each human cell?

• 1 meter of DNA in each human cell

• 2-3 meters of DNA in each human cell

• 50 meters of DNA in each human cell

Multiple Choice

How much DNA is in all human cells combined?

• All DNA added up from each cell in the human body could go from the earth and back 70 times

• All DNA added up from each cell in the human body could go from the earth and back once

• All DNA added up from each cell in the human body could go from the earth and back 770 times

Multiple Choice

How is DNA “packaged”?

• DNA is packaged in the cell as ribosomes.

• DNA is packaged in the cell as 'nucleus spots'.

• DNA is packaged in the cell as chromosomes.

Multiple Choice

How many chromosomes do humans have?

• Humans have 4 chromosomes

• Humans have 46 chromosomes

• Humans have 82 chromosomes

Multiple Choice

The overall shape of DNA is descibed as a ______ _____.

• semi circle

• double helix

• helix

Multiple Choice

What is the basic building block of DNA called?

• amino acids

• nucleic acids

• nucleotides

• RNA

Multiple Select

Which of the following are the "three parts" of a nucleotide?

• amino acid

• nitrogen base

• lipid

• sugar

• phosphate

Multiple Select

Click the two molecules that make up the sides of DNA :

• sugar (ribose)

• nitrogen base

• sugar (deoxyribose)

• phosphate

Multiple Choice

What part of the nucleotide makes up the middle of the DNA molecule?

• sugar

• nucleic acid

• nitrogen base

• phosphate

Multiple Choice

The nitrogen bases are stuck together with:

• water bonds

• hydrogen bonds

• oxygen bonds

• sugar

Multiple Choice

Adenine will always bond to __________.

• Adenine

• Guanine

• Cytosine

• Thymine

Multiple Choice

Guanine will always bond to

• adenine

• thymine

• guanine

• cytosine

Multiple Choice

Cytosine will always bind to

• adenine

• thymine

• guanine

• cytosine

Chargaff's Ratio

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Multiple Choice

The final composition of DNA is:

15% adenine

35% cytosine

35% guanine.

What would the percentage of Thymine be?

• 35 %

• 100%

• 15%

• 80%

Write down what pairs with 1-5. You answer these soon

Multiple Choice

Choose the correct order 1-5 from the previous screen

• 1. G

  2.C

  3.G

  4. A

  5. C

• 1. C

  2.C

  3. T

  4. A

  5. T

• 1. C

  2. A

  3. T

  4. G

  5. T