Q: The skin plays an important role in preventing the escape of what commonly found liquid from the body? Choices: - hormones - stomach acid - urine - water A:
water

Q: A mitotic spindle forms from the centrioles and passes through the nuclear membrane, which remains intact. chromosomes attach to the mitotic spindle, which separates the chromosomes and does what? Choices: - manipulates the cell - migrates the cell - destroys the cell - elongates the cell A:
elongates the cell

Q: What in hemoglobin gives red blood cells their red color? Choices: - calcium - lead - barium - iron A:
iron

Q: What broad group of living things serves as the major producers in terrestrial biomes? Choices: - vases - flowers - animals - plants A:
plants