Which statement supports the theory that chloroplasts evolved from cyanobacteria
a. chloroplast have dna.
b. chloroplast are created by cells.
c. chloroplast last lack an outer membrane.
d. chloroplasts synthesize their own proteins.

The instructions for making proteins come originally from

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae