Why do scientists believe that mitochondria may have been a separate cell at one time? (endosymbiotic theory)

This organelle modifies, packages and ships proteins where they need to go.

This organelle digests foreign DNA, old organelles, viruses and ingested bacteria.

This cell structure is a network of protein strands located in the cytosol.

This component of the cytoskeleton is the smallest, is made of actin and is important in cell movement and muscle contraction.

This component of the cytoskeleton is medium in size, made of keratin and is important in anchoring the nucleus and organelles.

This component of the cytoskeleton is made of tubulin, is the largest in size and is important in the movement of chromosomes during cell division.

Which BEST describes the structure of cilia and flagella?

Which BEST explains the difference between chromatin and chromosomes?

All of these are true about the nucleus EXCEPT.

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