Biochemical Reactions and Molecules

This video introduces biochemistry, focusing on metabolism, which includes catabolism and anabolism. Metabolic pathways are controlled by enzymes in an aqueous environment. Catabolism breaks down large molecules, releasing energy, while anabolism builds up molecules, requiring energy. The energy from catabolic reactions fuels anabolic processes. Examples include glucose breakdown and protein synthesis. The video also covers biological molecules like lipids, proteins, vitamins, and carbohydrates, highlighting their diverse functions based on structure.

What is the primary focus of biochemistry?

• The study of chemical reactions in non-living things

• The study of chemical reactions in living organisms

• The study of biological structures

• The study of physical reactions in living organisms

What is the role of enzymes in metabolism?

• They act as inhibitors

• They act as products

• They act as catalysts

• They act as reactants

What happens during catabolic reactions?

• Large molecules are synthesized

• Small molecules are broken down

• Energy is consumed

• Large molecules are broken down

Which of the following is a result of catabolic reactions?

• Energy is released

• Energy is stored

• Energy is converted to heat

• Energy is lost

What is required for anabolic reactions to occur?

• Energy consumption

• Energy loss

• Energy conversion

• Energy release

Which process involves the synthesis of proteins from amino acids?

• Catabolism

• Metabolism

• Anabolism

• Oxidation

How are catabolic and anabolic reactions interconnected?

• Energy from anabolic reactions drives catabolic reactions

• Energy from catabolic reactions drives anabolic reactions

• They occur independently

• They do not involve energy transfer

Which of the following is an example of a catabolic reaction?

• Nucleic acid synthesis

• Photosynthesis

• Protein synthesis

• Glucose breakdown in respiration

Which of the following is NOT a biological molecule discussed?

• Proteins

• Vitamins

• Minerals

• Lipids

What determines the diverse functions of biological molecules?

• Their weight

• Their specific structures and shapes

• Their color

• Their size