Question 4 Euglena are eukaryotic, unicellular organisms that can use light to generate food through photosynthesis. As
shown in the image, each euglena has a red eyespot and a long flagellum.
Write about three sentences explaining how a euglena cell could use its eyespot and flagellum to respond to
changing environmental conditions. How could this response enhance its ability to survive?

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

An animal cell (left) and a plant cell (right) are shown. which organelle, labeled x in the diagram, is found in both plant and animal cells?