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Life Science Praxis 5442 Questions and Answers Latest Version Graded A+
How do enzymes affect the rate of biochemical reactions?✔✔They speed up reactions by lowering the activation energy
What process do plants use to convert sunlight into chemical energy?✔✔Photosynthesis
What molecule carries genetic information in most living organisms?
✔✔DNA
How is oxygen produced in photosynthesis?✔✔By splitting water molecules during the light-dependent reactions
What structure controls the movement of substances into and out of a cell?✔✔The cell membrane
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Why is mitosis important for multicellular organisms?✔✔It allows for growth and repair by producing identical cells
What organelle is responsible for protein synthesis?✔✔Ribosomes
What is the role of chlorophyll in photosynthesis?✔✔To absorb light energy from the sun
How do traits pass from parents to offspring?✔✔Through inherited genes in DNA
What is the result of meiosis in humans?✔✔Four genetically unique gametes with half the number of chromosomes
What is a dominant allele?✔✔An allele that expresses its trait even when only one copy is present
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