Biology Intro to DNA

These two scientists are credited with discovering the DNA model

(choose two)

• Francis Crick

• Carl Linnaeus

• Gregor Mendel

• James Watson

The shape of a DNA molecule was first described by Watson and Crick to be a

• Double sphere

• Double helix

• Spiral shell

• Loop-de-loop

Nucleic acids such as RNA and DNA store

• Energy

• Glucose

• Information

• Proteins

Which of the following is not a part of a nucleotide

• Nitrogenous base

• Protein

• Phosphate

• Sugar

A chain of nucleotides creates

• Amino acids

• Carbohydrates

• Nucleic acids

• Proteins

Tags

NGSS.HS-LS1-1

In a DNA molecule, the sides the "ladder" are made of

• Alternating phosphates and sugars

• Hydrogen bonds and sugars

• Nitrogenous bases and hydrogen bonds

• Alternating proteins and sugars

The "rungs" of the DNA "ladder" are made of

• Nitrogenous bases and hydrogen bonds

• Hydrogen bonds and sugars

• Proteins and sugars

• Alternating phosphates and sugars

How are the nitrogenous bases bonded to the sugar-phosphate backbone

• Bonded to the phosphates

• Bonded to the sugars

• Dependent upon the order of the bases

• They are not connected to the sugar-phosphate backbone

In DNA, the nitrogenous bases are bonded to each other via

• Alpha bonds

• Beta bonds

• Hydrogen bonds

• Peptide bonds

Which part of the nucleotide is different in each group along the nucleic acid

• Nitrogenous base

• Phosphate

• Sugar

• Each part of the nucleotide remains the same