n Cellular

Notes

n Cellular Biology Catch-Up Summary Summary by Raisa Moche Loka n Enzymes • Enzymes are catalysts that speed up chemical reactions without being consumed. • Their activity depends on temperature and pH. • Substrates are the molecules that react, and products are the ones formed. • The 'lock and key' model explains enzyme specificity. • Enzymes reduce activation energy, allowing reactions to occur faster. • They are essential for body function; without them, life processes would be too slow. n Cellular Respiration • Occurs inside every cell. • The body uses oxygen and glucose to produce energy (ATP). • With oxygen → 36 ATP molecules are produced. • Without oxygen → only 2 ATP molecules are made. • Waste products: carbon dioxide (COn) and water. n ATP (Adenosine Triphosphate) • ATP is the molecule that carries and releases energy for cellular processes. • Energy is released when ATP breaks down into ADP and phosphate. • Cellular respiration is the process of regenerating ATP – not related to lung breathing. n Based on: 'Catch up for those who did not do Cellular Biology' (ARU College material)