History of DNA Studies

Multiple Choice

Ms. Conley is experimenting to find the best way to extract DNA from a strawberry. She hypothesizes that adding soap will allow her to extract more DNA because it will break up the lipids in the cell membrane. Why did Ms. Conley include the container without soap in her experiment, if soap was more effective at extracting DNA?

• The container without soap was the dependent variable.

• To have a control group for comparison.
• The container without soap was a replicate

• The container without soap was a back-up

Multiple Choice

Which component is NOT part of a nucleotide?

• sugar

• phosphate

• base

• lipase

Multiple Choice

Consider a DNA sample that contains 28% adenine [A]. After the DNA is replicated and then split into two daughter cells during cell division, what will each cell's percentage of thymine [T] be?

• 28%
• 14%
• 56%

• 42%

Multiple Choice

Which of the following macromolecules typically contains both Nitrogen and Phosphorus?

• carbohydrates
• lipids
• proteins
• nucleic acids

Multiple Choice

What molecules join together to make up a single DNA nucleotide?

• fructose, a phosphate group, and two nitrogenous bases

• sucralose, two phosphate groups, and one nitrogenous base

• deoxyribose, two phosphate groups, and one nitrogenous base

• deoxyribose, a phosphate group, and one nitrogenous base

Multiple Choice

In a complementary strand, Cytosine [C] always pairs with -

• Adenine [A]

• Thymine [T]

• Cytosine [C]

• Guanine [G]

Multiple Choice

During DNA replication, each original DNA strand is used as a template to build a new strand. If an original DNA strand had the sequence CCA-TAG, what will the sequence be on the new, complementary strand?

• GGT-ATC
• GGT-TAG

• CCA-TAG
• TTA-CTG