Flattened sac within a granum of a chloroplast; membrane contains chlorophyll; location where the light reactions of photosynthesis occur.
What will be an ideal response?
thylakoids
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Which of the following statements is true regarding the movement of water through the xylem of vascular plants? Select all correct choices
A. It is not uni-directional (e.g., can be transported both toward the leaves and roots). B. It depends on differences in turgor pressure. C. It may be the result of capillary action. D. It travels through vessel elements.
Two Martians fall in love and marry. One Martian is homozygous for red eyes and the other is
heterozygous. The recessive eye color is purple. What is the probability that they will have a child with purple eyes? a. 1/1 b. 1/2 c. 1/4 d. 3/4 e. 0
Which statement about glands and hormones is true?
A) The anterior pituitary produces multiple hormones that affect activity of other endocrine glands and cells of the body. B) The posterior pituitary produces melatonin, which helps regulate biological rhythms. C) The pineal gland is the master control center of the endocrine system. D) The hypothalamus is an endocrine gland responsible for producing the hormone calcitonin.
Which of the following is not found in the cytoskeleton?
A. intermediate filaments B. spindle fibers C. actin filaments D. microfilaments E. none of the above