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- Multiple ChoicePlease save your changes before editing any questions.
In DNA, adenine pairs up with thymine and guanine with cytosine. If adenine makes up 40% of the bases in DNA, then what percentage of the bases in DNA does cytosine make up?
10%
20%
40%
50%
- Multiple ChoicePlease save your changes before editing any questions.
What did Rosalind Franklin contribute to the understanding of DNA molecules?
An image indicating the shape of a DNA molecule
An analysis of the chemical makeup of a DNA molecule
A theory about how DNA conveys genetic information
A thought that DNA carries genetic information
- Multiple ChoicePlease save your changes before editing any questions.
Sarah is building a model of a strand of DNA. She should show that the nucleotides are linked by covalent bonds between
Two nitrogenous bases
Nitrogenous bases and phosphate
Nitrogenous bases and sugar
Phosphate and sugar
- Multiple ChoicePlease save your changes before editing any questions.
The illustration below represents a section of a DNA molecule. From left to right, what are the components of each nucleotide?
Phosphate group, nitrogenous base, deoxyribose
Nitrogenous base, phosphate group, deoxyribose
Nitrogenous base, deoxyribose, phosphate group
Phosphate group, deoxyribose, nitrogenous base
- Multiple ChoicePlease save your changes before editing any questions.
What is the relationship between DNA and protein in a cell?
Protein is composed of DNA that is stored in the cell.
DNA is made up of proteins that are synthesized in the cell.
DNA controls the production of protein in the cell.
The cell is composed only of DNA and protein.