Circular chromoso Study guides, Revision notes & Summaries

QUESTIONS AND ANSWERS

1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus should be observed. A single circular chromosome called a prokaryote contains free-floating nuclear ...

1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus should be observed. A single circular chromosome is characteristic of prokaryotic cells, which do...

hapter 1: Prokaryotes include cyanobacteria (blue-green algae), bacteria, and rickettsiae. Simple organization, no organelles, no nuclear membrane, lack of distinct nucleus, single, circular chromosome. Eukaryotic cells Animals, plants, protozoa, fungi, most algae, Membrane bound organelles multiple, structured chromosomes with supercoiled DNA, Well-defined nucleus, Ability to transport across outer membrane. *Cellular functions: Cells become specialized through cellular differentiation, or matu...