The principal polysaccharide in the plant cell wall is A suc

The principal polysaccharide in the plant cell wall is: A) sucrose. B) cellulose. C) starch. D) fructan. E) glycogen. The substance made up of glucose subunits that is the storage compound in animal and plants cells is (respectively) A. Glycogen and starch B) Fats and starch C) Startch and sucrose D) Glycogen cellulose E) Startch and cellulose Which of the following substances is LEAST likely to diffuse across the plasma membrane? A. an ion B) carbon dioxide C) a small, uncharged polar molecule D) oxygen E) water Leucoplasts that synthesize starch are known as: A) proplastids B) amyloplasts C) chloroplasts D) chromoplasts E) etioplasts. Which of the following is the best definition of osmosis? A) The net movement of water across a selectively permeable membrane. B) The net movement of water from a region of low water potential to a region of high water potential. C) The net movement of water from a region of high water potential to a region of low water potential. D) The net movement of any substance down a solute concentration gradient.

Solution

19 b) cellulose -answer

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20 . a ) glycogen and starch ---------- answer

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21 . c) ion ---------- answer

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22. b) amyloplasts---------- answer

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23 .c ) the net movement of water from high water potential to a region of low water potential-----answer

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Water : it diffuses by Osmosis from a district of high Water Potential to a locale of low Water Potential through the Water Potential Gradient.

Osmosis can in this way be characterized as the dispersion of water from an area of high Water Potential to a region of low Water Potential through a Partially Permeable Membrane.

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Amyloplasts: they are non-pigmented organelles found in some plant cells. They are in charge of the union and capacity of starch granules, through the polymerization of glucose. Amyloplasts additionally change over this starch once again into sugar when the plant needs vitality.

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Cellulose: it is a polysaccharide since it is the most bounteous natural compound on earth. Cellulose is a noteworthy segment of intense cell dividers that encompass plant cells, and is the thing that makes plant stems, leaves, and branches so solid.

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