Question

a. chloroplast. b. ribosome. c. endoplasmic reticulum. d. microtubule. e. microfilament. figure 4 - 4 use the figure to answer the corresponding question(s). 37. the formation of carbohydrates from carbon dioxide and water during photosynthesis occurs in the portion of figure 4 - 4 labeled: a. a (stroma) b. b (outer membrane) c. c (inner membrane) d. d ( grana thylakoids) e. e (stroma thylakoids) 38. which of the following is a key component of the cytoskeleton, flagella, and cilia? a. centrosome b. microtubules c. dna d. ribosomes e. endoplasmic reticulum 39. you isolate a cellular structure and determine that it is composed of alfa - tubulin and beta - tubulin. based on this evidence, you correctly identify this structure as: a. a structural map. b. a microfilament. c. a microtubule. d. an actin filament. e. a myosin filament. 40. the structures in the micrograph are:

Explanation:

1. Photosynthesis reactions that form carbohydrates from carbon - dioxide and water occur in the stroma of chloroplasts.
2. Microtubules are key components of the cytoskeleton, flagella, and cilia.
3. Microtubules are composed of alpha - tubulin and beta - tubulin.

Answer:

1. a. A (stroma)
2. b. microtubules
3. c. a microtubule