Cells and organelles (van Weerink)

9 important questions on Cells and organelles (van Weerink)

What are the groups that a cell can belong to? What are the properties of these groups?

  • Bacteria: no nucleus or other organelles
  • Archaea: no nucleus, often extremophiles
  • Eucaryotes: nucleus and other organelles, sometimes multicellular life forms.

What are the different microscopy methods

  • Light microscopy (LM)
  • Fluorescence microscopy
  • Electron microscopy (EM)

What is the structure of a nucleus?

A nucleus has a roundish structure with some loops.
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Why does a nucleus show as a darker circle under a microscope?

A nucleus shows as a darker circle under a microscope because a lot of proteins are found in the nucleus.

What is the nucleus pore responsible for?

A nucleus pore is responsible for transport of proteins and RNAs in and out of the nucleus.

What is the function of the mitochondria? How does it fulfill this function?

The mitochondria is the energy supply of the cell. Burning glucose yields energy in the form of adenosine triphosphate (ATP).

Why do mitochondria have their own DNA?

Mitochondria have their own DNA because they are derived from bacteria.

Do plants only have chloroplasts or are mitochondria also present?

Plants still need mitochondria to burn the glucose provided by in photosynthesis.

What is the function of the cytoskeleton and where does it occur?

The cytoplasm contains the cytoskeleton that is responsible for the form and transport of the cell.

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