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Bacterial Spiral Forms and Internal Structure Quiz

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Bacterial Spiral Forms and Internal Structure Quiz

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Questions and Answers

What is the internal structural feature of a prokaryotic cell that comprises a closed loop of double stranded DNA?

Cytoplasm

Plasma membrane

Granular ribosomes

Nucleoid (correct)

What surrounds the cytoplasm in a prokaryotic cell?

Nucleoid

Pili/fimbriae

Cell wall (correct)

Flagella

What does the genetic material of prokaryotes lack?

Ribosomes

Cytoplasm

True nucleus (correct)

Plasmids

What are small, self-replicating extrachromosomal elements called in some bacteria?

Plasmids Signup and view all the answers

What is the function of ribosomes in a cell?

Site of protein synthesis Signup and view all the answers

Which type of cells contain a nucleus and many organelles?

Eukaryotic cells Signup and view all the answers

What is the main component of eukaryotic cell membranes that enhances their rigidity?

Lipids called sterols Signup and view all the answers

What role does the cell wall play in eukaryotic cells?

Provides structural support and protection Signup and view all the answers

What is the composition of the shaft of a eukaryotic flagellum?

Molecules of a globular protein called tubulin arranged in chains to form hollow microtubules Signup and view all the answers

What is the function of cilia in single-celled eukaryotes?

To propel the cell through its environment Signup and view all the answers

What is the genetic status of eukaryotes in terms of chromosomes compared to prokaryotes?

Eukaryotes have one or more pairs of chromosomes, while prokaryotes are haploid Signup and view all the answers

What gives the rough endoplasmic reticulum its granular appearance under the electron microscope?

The presence of numerous ribosomes on its surface Signup and view all the answers