Probably the most abundant carbohydrate on Earth, which unbranched chain of b-glucose subunits is the primary
structural fiber in plant cell walls?
a. chitin
b. amylopectin
c. cellulose
d. glycogen
e. amylose
ANSWER: c
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Epiphytes are
a. plants that are not parasites but that do grow on other plants instead of the soil. b. plants that trap animals and digest them. c. parasitic plants that use mycorrhizae to obtain nutrients and food indirectly from other plants. d. plants that deal with nutrient-deficient soil by growing a large, netlike mesh of roots through several layers of the soil. e. parasitic plants that use haustoria to obtain nutrients and food directly from other plants.
Which of the following is not a photosynthetic pigment?
A. Phycobilin B. Carotenoid C. Leukophyll D. Chlorophyll
Scientists have found that extracellular matrix components may induce specific gene expression in embryonic tissues such as the liver and testes
For this to happen there must be direct communication between the extracellular matrix and the developing cells. Which kind of transmembrane protein would most likely be involved in this kind of induction? A) integrins B) collagens C) actins D) fibronectins
Osmosis is best defined as the movement of
What will be an ideal response?