Which of the following is not part of the cell theory? A. All organisms are composed of one or more cells.

B. Cells are the basic unit of life for all living things.

C. All cells come from pre-existing cells.

D. All cells contain a nucleus.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.