DNA Structure and Function Living Environment

DNA takes the shape of what molecule

• Double Helix

• Twisted Ladder

• Spiral

• Staircase

One stand in a molecule of DNA reads "AGTTACA" Which of the following does each letter represent?

• Sugar

• Phosphate

• Nitrogenous Base

• Protein

One strand in a molecule of DNA contains the sequence "ATTGCGTA" Which sequence is the complementary strand?

• ATTGCGTA

• UAACGCAU

• TAACGCAT

• GCCTATCG

A biologist collects DNA samples from two sisters. The younger sister has blond hair. The older sister has red hair. The sisters have different traits because their DNA contains different-

• types of nitrogenous bases

• types of sugar molecules

• Sequences of nucleotides

• sized phosphate groups

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A nucleotide consists of-

• A sugar, phosphate, and protein

• lipid, carbohydrate, phosphorus

• sugar, base, protein

• sugar, phosphate, nitrogen base

What is the significance of the sequence (order) of the Nitrogen Bases in DNA?

• The order of the Nitrogen Bases determines the number of chromosomes present in an organism.
• The order of the Nitrogen Bases determines the traits that an organism will possess (have).
• The order of the Nitrogen Bases determines the gender of an organism.
• The order of the Nitrogen Bases determines whether an organism is abiotic biotic.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1