GBH2324S1 - Unit 2A Test (Biochemistry)

Front

What is the maximum number of electrons that can be held in the second energy level of an atom?

Back

8

Front

Which of the following biomolecules does not contain nitrogen: RNA, nucleic acids, amino acids, or monosaccharides?

Back

Monosaccharides

Front

What is the primary structural component found in insect exoskeletons?

Back

Chitin

Front

What was the main focus of the Drops on a Penny Lab?

Back

Surface Tension of Water

Front

What type of molecule is composed of a glycerol molecule and three fatty acids?

Back

Lipids

Front

Define 'lipids' in the context of biochemistry.

Back

Lipids are a group of biomolecules that are insoluble in water and include fats, oils, and waxes.

Front

What is surface tension and why is it important in biology?

Back

Surface tension is the cohesive force at the surface of a liquid that allows it to resist external force. It is important for processes like water transport in plants.

Front

What role do amino acids play in living organisms?

Back

Amino acids are the building blocks of proteins, which are essential for structure, function, and regulation of the body's tissues and organs.

Front

Explain the significance of nitrogen in biological molecules.

Back

Nitrogen is a key component of amino acids, nucleic acids, and other biomolecules, making it essential for life.

Front

What is the difference between monosaccharides and polysaccharides?

Back

Monosaccharides are simple sugars (like glucose), while polysaccharides are complex carbohydrates made up of long chains of monosaccharides (like starch).