18 Questions
What are the four major elements found in 96% of living organisms?
Carbon, Hydrogen, Oxygen, Nitrogen
Which of the following is not one of the molecules of life mentioned in the text?
Metals
Why do living organisms eat according to the text?
To gain more energy for growth and repair
What is the most abundant inorganic compound in the human body according to the text?
H2O
What is essential for building blocks and energy for building and running bodies according to the text?
Proteins
Which element is NOT mentioned as one of the major elements found in living organisms?
Calcium
What is the function of a catalyst in a chemical reaction?
Lowering the activation energy required for the reaction to occur
Which two components fit together like a lock and key during an enzyme-catalyzed reaction?
Substrates and enzymes
What is the main role of enzymes in biological systems?
Speed up reactions by lowering activation energy
Which part of the enzyme-substrate complex is eventually released as a product?
Glucose-6-phosphate
What is the significance of activation energy in a chemical reaction?
It is needed to start a reaction
Why are enzymes important in living tissues for speeding up reactions?
To make slow reactions practical
What is the process of building bigger molecules from smaller molecules called?
Synthesis
What are proteins primarily built from?
Amino acids
Which large organic molecule is built from sugars?
Carbohydrates
What is the main function of digestion in the body?
Breaking down big molecules into raw materials
Which large molecule is primarily built from nucleotides?
Nucleic acids (DNA)
In the context of building important polymers, what is the role of ATP?
Providing energy for synthesis reactions
Explore the composition of living creatures and learn why we need to eat in this quiz delving into the building blocks of life. Discover how carbon, hydrogen, oxygen, and nitrogen come together in various combinations to form the molecules essential for living organisms.
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