Stomata and their surrounding guard cells are affected by conditions other than just water. Describe these other factors
What will be an ideal response?
Carbon dioxide levels within the leaf affect the stomata, as when the carbon dioxide levels within the leaf drop precipitously, photosynthesis cannot continue. Guard cells actively pump potassium ions in, and water follows by osmosis, and vice versa. Temperature and light also affect stomatal opening and closing. Further, a plant hormone, abscisic acid, affects the concentration of calcium ions, and also potassium ions. Some plants exhibit a daily rhythm to the opening and closing as well.
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Mitochondria and chloroplasts have their own DNA but use the ribosomes of the host cell
Indicate whether the statement is true or false.
The ATP made during glycolysis is generated by
A. substrate-level phosphorylation. B. electron transport. C. photophosphorylation. D. chemisosmosis. E. oxidation of NADH to NAD+
If short hair (L) is dominant to long hair (l), then
what fraction of the offspring produced by a cross of Ll x ll will be homozygous dominant? a. 1/2 b. 1/4 c. 1/3 d. none (no chance of this offspring) e. none of these answers is correct
Modern biology is guided by the cell theory, the view that _____.
A) all living things arise from other living things B) the cell is the smallest unit of organization capable of life C) living organisms are formed from one or more cells D) cell growth and division account for the continuity of life E) all of the choices