Unit 2 Cells and Viruses Period 4

Which structure can be found in both eukaryotic and prokaryotic cells?

• mitochondrion

• nucleus

• chloroplast

• nucleic acid

Which structure does not belong in a prokaryotic cell?

• DNA

• Nuclear membrane

• phospholipid membrane

• cytoplasm

Which statement applies to eukaryotic cells but not to prokaryotic cells?

• utilize mitochondria during energy production

• flow of nutrients and wastes occurs across a membrane

• contain DNA as genetic material

• perform metabolic processes with the help of chemicals

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Which structures are found in all prokaryotic cells?

• flattened, stick-like structures which process macromolecules

• a continuous, interconnected network of membranes

• small, protein-producing units composed of RNA and protein

• power-producing organelles that convert energy into usable forms

Which of the following is a defining characteristic of a prokarytoic cell?

• The method of cellular respiration

• the composition of the ell membrane

• absence of a membrane-bound nucleus

What type of cell is described below?

*contains mitochondria

*contains ribosomes

*reproduces by meiosis

*performs photosynthesis

• bacteria

• prokaryote

• virus

• eukaryote

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Four of the six kingdoms are comprised of organisms that contain eukaryotic cells. Which of the following structures in a cell would not be evidence that the cell is eukaryotic?

• cell walls

• mitochondria

• endoplasmic reticulum

Scientists think eukaryotes may have evolved from an endosymbiotic relationship between prokaryotes and mitochondria and host parasitic cells. One piece of evidence that supports this endosymbiosis theory is that mitochondria have their own system of transcription and translation that more closely resembles protein synthesis in prokarytoies than eukaryotes. Upon Evaluation of this information, which of the following statements is most likely true?

• At one time, mitochondria may have been primitive prokaryotic cells

• protein synthesis in the mitochondria is the result of bacterial cell infection

• mitochondria do not have DNA and , therefore, do not produce mitochondrial RNA

• there was never a symbiotic relationship between prokaryotic cells and eukaryotic cells

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Based on cell size and complexity, prokaryotic cells cells would be expected to

• have more ribosomes than ost eukaryotic cells

• have fewer ribosomes than most eukaryotic cells

• be affected more by DNA mutations compared to eukaryotic cells

• be affected less by DNA mutations compared to eukaryotic cells

A scientist observes two cells. Cell 1 and Cell 2 both contain DNA (genetic material) and ribosomes. However, Cell 1 contains a nucleus and other membrane-bound organelles, which Cell 2 does not. What is the correct classification for each of the cells?

• Cell 1=Eukaryotic, Cell 2=Prokaryotic

• Cell 1=Prokaryotic, Cell 2 Eukaryotic

• Cell 1 Eubacteria, Cell 2=Archaea

• Cell 1=Archaea, Cell 2=Eubacteria