DNA Structure and Function: Exploring Genetic Coding and Polymer Basics

This video tutorial explores the structure and function of DNA, highlighting its role in storing genetic information within the cell nucleus. It explains how DNA forms chromosomes during cell replication to maintain stability. The video also describes DNA as a polymer composed of repeating nucleotide units, detailing the components of nucleotides, including phosphate, sugar, and nitrogenous bases.

What is the primary function of DNA within the cell?

• To store and code genetic information

• To protect the cell from pathogens

• To provide energy for cellular processes

• To transport nutrients

Where is DNA located for most of the cell's life cycle?

• In the cytoplasm

• In the mitochondria

• Inside the nucleus

• On the cell membrane

During cell replication, DNA is organized into what structure?

• Mitochondria

• Endoplasmic reticulum

• Chromosomes

• Ribosomes

What is a polymer?

• A single molecule with no repeating units

• A type of protein

• A type of cell organelle

• A molecule consisting of many repeating units

Which of the following is an example of a polymer?

• Oxygen

• Starch

• Glucose

• Water

What are the monomeric units that make up DNA?

• Glucose molecules

• Fatty acids

• Nucleotides

• Amino acids

Which of the following is NOT a component of a nucleotide?

• Phosphate group

• Lipid

• Sugar

• Nitrogenous base

What type of sugar is found in a nucleotide?

• Deoxyribose

• Ribose

• Fructose

• Glucose

How many oxygen atoms are attached to the phosphorus ion in the phosphate group of a nucleotide?

• Five

• Three

• Two

• Four

Which component of the nucleotide is responsible for the genetic coding?

• Phosphate group

• Water

• Sugar

• Nitrogenous base