Question: Q: Portal veins carry blood between what? Choices: - chambers of the heart - digestive organs - arteries - pairs of capillary beds A:
Answer: pairs of capillary beds

Question: Q: Behind the pupil, a single lens focuses light on a layer of what? Choices: - photons - chloroplasts - electrons - photoreceptors A:
Answer: photoreceptors

Question: Q: What is the job of hemoglobin in the body? Choices: - infects oxygen - become scabs - transports neurons - transports oxygen A:
Answer:
transports oxygen