While looking at the bottom surface of a leaf with a compound light microscope, a student notices pairs of cells with openings between them on the surface of the leaf. the main purpose of these openings and the cells that surround them is
1. removing excess sugars2. synthesis of carbon dioxide3. regulating gas exchange4. purification of water
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Biology, 21.06.2019 16:30
25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?
Answers: 3
Biology, 22.06.2019 01:20
Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen
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Biology, 22.06.2019 15:10
Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus
Answers: 2
While looking at the bottom surface of a leaf with a compound light microscope, a student notices pa...
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