DNA Structure (In-Class Notes)

Multiple Select

Who contributed to the discovery of the DNA double helix structure in 1953?

• Rosalind Franklin

• Albert Einstein

• Watson & Crick

• Gregor Mendel

Multiple Choice

Which of the following best describes the function of histones in DNA structure?

• They code for proteins

• They are enzymes that replicate DNA

• They are proteins that help pack and condense DNA

• They are the building blocks of nucleotides

Labelling

Label the following structure

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phosphate

glucose

Lipids

nitrogen base

deoxyribose

Multiple Select

Which of the following are components of a nucleotide in DNA?

• Phosphate group

• Deoxyribose sugar

• Nitrogen base

• Amino acid

Match

Match the following DNA base pairs.

• Adenine pairs with

• Thymine pairs with

• Cytosine pairs with

• Guanine pairs with

Thymine

Adenine

Guanine

Cytosine

• Thymine

• Adenine

• Guanine

• Cytosine

Multiple Choice

What determines the genetic code in a DNA molecule?

• The number of chromosomes

• The sequence of nitrogen bases

• The number of histones

• The number of hydrogen bonds

Labelling

Complete the DNA molecule based on the rules for complementary base pairing

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C

G

T

A

Labelling

label the following parts of the DNA Molecule.

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nitrogen bases

Phosphate

Hydrogen Bonds

sugars