21. Which of the following statements is NOT true about all living things? a. th

Question

21. Which of the following statements is NOT true about all living things? a. they are made of cells b. their composition includes carbon, hydregen, oxygen they undergo growth and development they have a cell wall as an outer boundary. c. d. 22. The cell theory b. c. d. explains how life evolves by natural selection. helps to identify the properties of life. explains how organisms have changed over time. Includes the idea that cells come from preexisting cells. 23. In order to anrive at a solution to a problem, a scientist usually proposes and tests a. laws b. theories c. hypothesis d. principles 24. The control in an experiment a. makes the experiment valid b. is an additional replicate for statistical purposes c. reduces the experimental errors d. allows a standard of comparison for the experimental group.

Explanation / Answer

21.d. they have a cell wall as an outer boundary.because capsule is outer bounadry of a prokaryotic cell

22.d.includes the idea that cells come from preexisting cells

23.c hypothesis

24.c.reduces the experimental errors

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