DOL Components of DNA

A model of DNA is shown.

Which part of the DNA model is most directly associated with the coding of genetic information?

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

What components make up the backbone of a DNA molecule? ​ (a)   and ​ (b)  

• Phosphate
• Deoxyribose Sugar
• Ribose Sugar
• Pyrimidines
• Purines
• Hydrogen Bond
• Nitrogen bases

Eight components present in nucleic acids are listed in the box. Which 2 are not found in RNA (a)  

• 3 and 5 only
• 1, 3, 5, and 6 only
• 2 and 4 only
• 3, 4, 7, and 8 only

A segment of a DNA strand is shown.

3' AGGTCAGGT 5'

Which of these is the correct complementary DNA strand for the segment shown?

Students are given data from an investigation that identified some of the chemical elements present in four different samples.

Which sample was most likely DNA?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?

• The number of hydrogen bonds that hold the strands of DNA together.

• The numbr of carbosn in the DNA molecule.

• The sequence of nucleotide bases in the DNA molecule

• The sequences of phosphate along each DNA strand.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Difference in traits such as hair texture are determine by difference in-

• The location of sugar groups in DNA

• the sequence of nucleotides in DNA

• the number of nitrogen bases in DNA

• the molecules attached ot the phosphate in DNA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A student used posters board to construct this model of a section of DNA.

Which statement describes this model of DNA?

• The model is inaccurate because the base pairs are incorrect.

• The model is accurate because it contains correctly paired bases.

• The model is accurate because it shows each base splitting to form a double helix.

• The model is inaccurate because some typical bases in DNA are missing.

Four different nucleotides ar eused as building blocks of DNA. Which of the following can be used to distinguish one nucleotide from another?

• The nitrogenous base

• The shape of the deoxyribose sugar

• The length of the phosphate group

• The type of fatty acid

The completed DNA puzzle/model resembles a

• rubber band

• ladder

• egg

• spiral