Exploring DNA: Structure and Function

Front

What are the strategic steps involved in planning a DNA extraction experiment?

Back

1. Identify the source of DNA 2. Choose appropriate reagents 3. Determine the method of analysis.

Front

What is a nucleotide?

Back

A nucleotide is the basic building block of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

Front

What is the role of hydrogen bonds in DNA structure?

Back

Hydrogen bonds hold the two strands of DNA together by connecting complementary nitrogenous bases.

Front

Describe the process of lysis in DNA extraction.

Back

Lysis is the step where the cell membrane is broken down to release DNA into the solution.

Front

What is the purpose of precipitation in DNA extraction?

Back

Precipitation is used to remove proteins and other contaminants, allowing for the isolation of DNA.

Front

Explain the purification step in DNA extraction.

Back

Purification isolates the DNA from other cellular components and contaminants, ensuring a clean sample.

Front

Given the DNA sequence 5'-GATTACA-3', what is the corresponding mRNA sequence?

Back

5'-CUAAUGU-3'.

Front

What is the complementary DNA sequence for ATT GTA CGA?

Back

TAA CAT GCT.

Front

What are the components of a nucleotide?

Back

A nucleotide consists of a phosphate group, a deoxyribose sugar, and a nitrogenous base.

Front

What is the function of DNA?

Back

DNA stores genetic information and provides instructions for the development and functioning of living organisms.