Question: Q: What blood protein carries oxygen from the lungs to cells throughout the body? Choices: - plasma - platelets - dopamine - hemoglobin A:
Answer: hemoglobin

Question: Q: What is the most important factor determining soil type? Choices: - landscape - plant life - ecology - climate A:
Answer: climate

Question: Q: The cell membrane consists of two adjacent layers of what? Choices: - lecithin - membranes - eukaryotes - phospholipids A:
Answer:
phospholipids