IB Bio Water Carbs Lipids Review

Front

What is ribose?

Back

Ribose is a five-carbon sugar (pentose) that is a component of RNA (ribonucleic acid). It is essential for the synthesis of nucleotides.

Front

What is cohesion in the context of water?

Back

Cohesion is the property of water molecules to stick to each other due to hydrogen bonding, which contributes to water's high surface tension.

Front

What is adhesion in the context of water?

Back

Adhesion is the property of water molecules to stick to other substances, especially those that are charged or polar, which helps in processes like capillary action.

Front

What is amylopectin?

Back

Amylopectin is a branched form of starch, a polysaccharide made up of glucose units, and is one of the two components of starch, the other being amylose.

Front

What are nucleic acids?

Back

Nucleic acids are organic macromolecules that contain carbon, hydrogen, oxygen, nitrogen, and phosphorus. They include DNA and RNA, which are essential for genetic information storage and transfer.

Front

How do starch, glycogen, and cellulose differ?

Back

Starch, glycogen, and cellulose are all polysaccharides made from glucose, but they differ in their structure and function: starch is used for energy storage in plants, glycogen is used for energy storage in animals, and cellulose provides structural support in plant cell walls.

Front

What is the primary function of carbohydrates?

Back

The primary function of carbohydrates is to provide energy to the body. They are also involved in structural functions and cell recognition.

Front

What are lipids?

Back

Lipids are a diverse group of hydrophobic organic molecules, including fats, oils, and phospholipids, that are primarily used for energy storage, insulation, and making up cell membranes.

Front

What is the difference between saturated and unsaturated fats?

Back

Saturated fats have no double bonds between carbon atoms and are typically solid at room temperature, while unsaturated fats have one or more double bonds and are usually liquid at room temperature.

Front

What is the role of water in biological systems?

Back

Water is essential for life; it acts as a solvent, helps regulate temperature, participates in chemical reactions, and provides structure to cells.