Cell Theory and Cell Size

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What is the main function of the plasma membrane in eukaryotic cells?

Stores genetic information

Helps in cell division

Regulates passage of materials in and out (correct)

Synthesizes organic food

What is the believed origin of the nucleus in eukaryotic cells?

Emitted from the Golgi apparatus

Evolved by invagination of the plasma membrane (correct)

Arose spontaneously within the cell

Developed from the endoplasmic reticulum

What is the theory that suggests mitochondria and chloroplasts in eukaryotic cells originated from engulfed prokaryotic cells?

Nuclear fusion theory

Evolutionary vestige theory

Endosymbiotic theory (correct)

Excavation hypothesis

Which organelles are considered independent and self-sufficient in eukaryotic cells?

Mitochondria and chloroplasts Signup and view all the answers

Which type of cells would contain more smooth endoplasmic reticulum according to the text?

Liver cells detoxifying drugs Signup and view all the answers

What is the function of the dark nucleolus within the nucleus of a eukaryotic cell?

Produces subunits of ribosomes Signup and view all the answers

What did Matthias Schleiden and Theodor Schwann contribute to the Cell Theory?

Proposed that cells come only from pre-existing cells Signup and view all the answers

Why do cells need to be small according to the information provided?

To increase the efficiency of material transport Signup and view all the answers

What is a distinguishing feature of eukaryotic cells compared to prokaryotic cells?

Larger size and presence of organelles Signup and view all the answers

What is the size range for cells as mentioned in the text?

1 millimeter to 1 micrometer Signup and view all the answers

Why does the surface-area-to-volume ratio require cells to be small?

To enhance the efficiency of transporting materials Signup and view all the answers

What is one of the main functions of organelles in eukaryotic cells?

Perform specific functions Signup and view all the answers

Cell Theory and Cell Size

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Questions and Answers

What is the main function of the plasma membrane in eukaryotic cells?

What is the believed origin of the nucleus in eukaryotic cells?

What is the theory that suggests mitochondria and chloroplasts in eukaryotic cells originated from engulfed prokaryotic cells?

Which organelles are considered independent and self-sufficient in eukaryotic cells?

Which type of cells would contain more smooth endoplasmic reticulum according to the text?

What is the function of the dark nucleolus within the nucleus of a eukaryotic cell?

What did Matthias Schleiden and Theodor Schwann contribute to the Cell Theory?

Why do cells need to be small according to the information provided?

What is a distinguishing feature of eukaryotic cells compared to prokaryotic cells?

What is the size range for cells as mentioned in the text?

Why does the surface-area-to-volume ratio require cells to be small?

What is one of the main functions of organelles in eukaryotic cells?

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