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biol 200 Exam Study questions and Answers all Verified 100% Correct

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  • Course
  • Biol 200
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  • Biol 200

biol 200 Exam Study questions and Answers all Verified 100% Correct

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  • January 10, 2025
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biol 200
  • Biol 200
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biol 200 Exam Study questions and Answers all
Verified 100% Correct

what are lysosomes? what do they do? - ✔✔special vesicles that have digestive
enzymes; they ingest macromolecules and digest them into smaller molecules



what is endocytosis? - ✔✔when the membrane forms a vesicle around
macromolecules too big to be transported across the membrane, "eating" the
macromolecules



what are mitochondria? - ✔✔degenerate bacterial symbionts



what do mitochondria do? - ✔✔produce ATP using energy produced by oxidizing
small organic molecules from the cytosol


how many compartments of the mitochondria are there? what are they called? -
✔✔1) matrix
2) intermembrane space



what are peroxisomes? what do they do? - ✔✔membrane limited bodies containing
catalyase and other enzymes involved in breaking down peroxides and other reactive
oxygen compounds



what is the plasma membrane? - ✔✔outer membrane of the cell that separates the
interior from the exterior and directly or indirectly controls the passage of everything
into and out of the cell

, Flow of biological information (uhh... super simplified?) - ✔✔1) RNA synthesis in the
nucleus
2) out the nuclear pores
3) protein synthesis in the cytosol



path of secretory proteins - ✔✔1) synthesis in the cytosol
2) proteins move to the lumen of the ER
3) then to the golgi apparatus
4) then to secretory vesicles
5) vesicles empty contents to the outside



other destinations for proteins from the golgi? - ✔✔alternatively, proteins are taken
to lysosomes, providing the enzymes found in the lysosomes



how do proteins enter the nucleus? - ✔✔certain proteins have a signal that interacts
with nuclear pores and are transported into the nucleus


what kind of proteins have the signalling allowing entrance into the nucleus? -
✔✔chromosomal proteins, proteins required for DNA replication, transcription and
RNA processing


how do proteins enter the mitochondria? what kind of proteins are they? -
✔✔proteins that have signals allowing interaction with membrane system of the
mitochondria; these proteins include all the ones involved with the mitochondria



proteins aren't just meant for secretion, but also: - ✔✔1) nucleus
2) mitochondria

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