1. which of the following organelles converts light energy into food
a. lysosome
b. chloroplast
c. nucleus
d. ribosome
2. oxygen moving from the blood stream into a cell down a concentration gradient is a form of
a. osmosis
b. endocytosis
c. active transport
d. passive transport
3. in order for an organism to develop specialized tissues, the organism must be which of the following
a. a plant
b. an animal
c. unicellular
d. multicellular