True/False: After reading each sentence decide whether the statement is true or false. 20. Chromosomes are the genetic material, which is passed on from one generation to the next.
21. A cell plate forms in cytokinesis in plant cells.
22. Cells are the basic units of life.
23. Cell spends most of their life in prophase.
24. Interphase is the division period of the cell cycle.

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What are the student's observations and inferences before he starts his investigation?