7th grade dna basics daily grade

What are the 3 parts of DNA

• Sugar Phosphate Backbone

• Nitrogenous Bases

• Hydrogen Bonds

• Twizzlers and marshmallows

What are the four bases of DNA?

• Adenine

• Thymine

• Guanine

• Cytosine

This is a picture of ?

• Gene

• Chromosome

• Medicine

• Genotype

Tags

NGSS.HS-LS3-1

The human body cells have what number of chromosomes?

• 23 chromosomes

• 46, or 23 pairs of chromosomes

• too many to count

• 72 chromosomes

In DNA molecule, the nitrogenous bases are?

• Adenine, Guanine, Cytosine and Uracine

• Adenine, Thymine, Cytosine and Guanine

• Adenine, Thymine, Cytosine and Vasolene

• Adenine, Thymine, and Cytosine

The nitrogenour base pairs are?

• Adenine-Thymine and Cytosine-Guanine

• Adenine-Cytosine and Thymine-Guanine

• Adenine-Protein and Thymine-fats

• Thymine pairs with Cytosine

Why are your chromosomes arranged in pairs?

• Scientists have no idea
• Because you get one from your mom and one from your dad
• Because pairs can divide easier
• Because DNA is awesome

Tags

NGSS.HS-LS3-1

A nucleotide consists of

• DNA

• adenine and thymine

• A phosphate, sugar and nitrogenous base

• genes

In a DNA molecule, nucleotides are linked together to make up a single strand of DNA then bonded to a second strand. This structure is known as a

• RNA

• double helix

• watson-crick

• double nucleotide

In a double strand of DNA, the nitrogen bases only pair in a certain combination. Which combination is correct?

• A-C and T-G

• C-T and A-G

• A-T and G-C

• A-A C-C