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What does DNA stand for?
B. Deoxyribonucleic acid
A. Double nitrogen acid
D. Deoxygenated ribose acid
C. Dynamic nuclear acid
Where is DNA found in a human cell?
Nucleus
Ribosomes
Cell membrane
Cytoplasm only
Which of the following best describes the shape of DNA?
Circular loop
Single helix
Straight ladder
Double helix
What is the main role of DNA?
To digest nutrients
To provide energy for the cell
To carry genetic information
To protect the cell
Which structure is DNA wrapped around to form chromosomes?
Lipids
Enzymes
Proteins (histones)
Sugars
Which nitrogenous base pairs with adenine in DNA?
Thymine
Cytosine
Uracil
Guanine
Adenine and thymine are held together by which type of bond?
Ionic bonds
Hydrogen bonds
Covalent bonds
Peptide bonds
Adenine and thymine are examples of which type of molecule?
Nitrogenous bases
Fatty acids
Enzymes
Sugars
Which nitrogenous base pairs with cytosine in DNA?
Uracil
Thymine
Guanine
Adenine
Cytosine and guanine are held together by which type of bond?
Covalent bonds
Hydrogen bonds
Ionic bonds
Peptide bonds
