Which of the following statements is not true? a)the smooth er has no ribosomes. b)the smooth er functions according to what type of cell it is in. c)the rough er has ribosomes. d)the rough er functions according to what type of cell it is in.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Which prefix mean under less or below