Chloroplasts are composed of membranous sacs called ________ that carry chlorophyll. Surrounding these sacs is a ground substance called ________.
A. grana; stroma
B. cristae; stroma
C. thylakoid; matrix
D. cristae; matrix
E. thylakoids; stroma
Answer: E
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Compare animal and plant cells; how are they different? How are they the same?
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The transparent portion of the outer eye that allows light to enter the eye is the
A. lens
B. cornea
C. pupil
D. iris
How is the structure of a mitochondrion related to its function of generating energy?
A) The mitochondrion has an oval shape. B) The mitochondrion is surrounded by a membrane. C) The mitochondrion has a highly folded internal membrane. D) The mitochondrion contains genetic information inherited from the mother.
middle germ layer; develops into muscles, and much of the circulatory, reproductive, and excretory systems
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