The only plant hormone that is a gas is cytokinin
Indicate whether the statement is true or false
FALSE
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Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. If cells are removed from the middle of the dish, the cells bordering the open space will begin dividing until they have filled the empty space. What does this experiment show?
A. Cells continue to grow as long as there is adequate space. B. The controls on cell growth and division can be turned on and off. C. When cells come into contact with other cells, they stop growing. D. Cell division can be regulated by factors outside of the cell. E. All of the answer choices are correct.
Figure 2-1 represents:
a. two isotopes of the same element.
b. two different elements.
c. two different ions.
d. an acid and a base.
e. a cation and an anion.
Which of the features listed below is not found in all cells?
A) Cytoplasmic membrane B) Ribosomes C) DNA D) Nucleus
All microorganisms are parasites.
Answer the following statement true (T) or false (F)