When using microscope 2, how do the cheek cells compare to the cells of the onion root tip with regard to the general shape of the the cells?

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm