Enzymes — definition?
Proteins that speed up reactions.
Digestive enzymes — role?
Break down food molecules into absorbable units.
Amylase — function?
Breaks down starch into sugars.
Temperature effect — on enzymes?
Affects activity; extremes cause denaturation.
Heart chambers — number?
Four: two atria, two ventricles.
Blood flow — pathway?
Body → right atrium → right ventricle → lungs → left atrium → left ventricle → body.
DNA — structure?
Double helix of two strands with bases.
Base pairing — rule?
A pairs with T; C pairs with G.
Genes — role?
Carry hereditary information for traits.
DNA replication — process?
Semi-conservative copying with original and new strands.
Answer 5 questions on Fundamentals of Enzymes and Circulatory Systems.
1. What is the primary role of valves in the heart within the circulatory system?
2. According to the section on Environmental Factors, what is the effect of extreme temperatures on living organisms?
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