LIFSCI 7C XL - PEQ Week 9 (9/10)
Questions and Answers Rated A+
Question: What is the primary function of enzymes in biological reactions?
Answer: Enzymes act as catalysts, speeding up biochemical reactions by lowering the
activation energy required for the reaction to proceed.
Question: ...
LIFSCI 7C XL - PEQ Week 9 (9/10)
Questions and Answers Rated A+
Question: What is the primary function of enzymes in biological reactions?
Answer: ✔✔ Enzymes act as catalysts, speeding up biochemical reactions by lowering the
activation energy required for the reaction to proceed.
Question: How does ATP provide energy for cellular processes?
Answer: ✔✔ ATP provides energy by releasing a phosphate group during hydrolysis, which
releases energy that can be used for various cellular activities.
Question: What is the role of the electron transport chain in cellular respiration?
Answer: ✔✔ The electron transport chain generates ATP by transferring electrons through a
series of complexes, ultimately producing water and creating a proton gradient used to power
ATP synthase.
Question: How do the structures of DNA and RNA differ?
Answer: ✔✔ DNA is a double-stranded molecule with deoxyribose as the sugar, while RNA is
single-stranded and contains ribose as the sugar.
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, Question: What is the significance of genetic mutations in evolution?
Answer: ✔✔ Genetic mutations introduce variation in a population, which can lead to
evolutionary changes over time if the mutations confer a survival advantage.
Question: How does photosynthesis convert light energy into chemical energy?
Answer: ✔✔ Photosynthesis converts light energy into chemical energy by using sunlight to
drive the synthesis of glucose from carbon dioxide and water, producing oxygen as a byproduct.
Question: What are the key differences between mitosis and meiosis?
Answer: ✔✔ Mitosis results in two genetically identical diploid daughter cells, while meiosis
produces four genetically diverse haploid cells used in sexual reproduction.
Question: How do regulatory proteins control gene expression?
Answer: ✔✔ Regulatory proteins control gene expression by binding to specific DNA
sequences, either promoting or inhibiting the transcription of genes depending on the needs of
the cell.
Question: What is the role of ribosomes in protein synthesis?
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