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pcb 3023 FINAL EXAM Practice Questions and Answers

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pcb 3023 FINAL EXAM Practice Questions and Answers endosymbiosis - Answer️️ -mitochondria and chloroplasts were prokaryotes that entered eukaryotic cells and became specialized to perform specific cellular instructions evidence for endosymbiosis - Answer️️ -- organelles contain their ...

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  • August 28, 2024
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©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM

Molecular Cell Biology PCB 3023 BROWARD COLLEGE/ UNIVERSITY of
SOUTH FLORIDA/ UCF COLLEGE Of Sciences




pcb 3023 FINAL EXAM Practice
Questions and Answers

endosymbiosis - Answer✔️✔️-mitochondria and chloroplasts were
prokaryotes that entered eukaryotic cells and became specialized to
perform specific cellular instructions

evidence for endosymbiosis - Answer✔️✔️-- organelles contain their
own DNA (organelle genomes

- organelles resemble present day prokaryotes

- organelle genomic sequences resemble those of present day
prokaryotes

- organelles can divide independently from the cell nucleus

- organelles are enclosed by double membranes

evolution of cells - Answer✔️✔️-- mitochondria entered into the
eukaryotic cell lineage



see photo (slide 33, lecture 1)

endosymbiosis- the origin of mitochondria - Answer✔️✔️-mechanism
is similar to endocytosis

- notice the double membrane of the organelle


1

, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM

Molecular Cell Biology PCB 3023 BROWARD COLLEGE/ UNIVERSITY of
SOUTH FLORIDA/ UCF COLLEGE Of Sciences




human mitochondrion contains multiple copies of its genome and
divides like a __________________ - Answer✔️✔️-bacterium
(fusion/fission)

evolution of cells - Answer✔️✔️-chloroplasts entered only in the plant
cell lineage

endosymbiosis - origin of chloroplasts - Answer✔️✔️-chloroplasts
originated from a photosynthetic bacterium

endosymbiotic prokaryotes adapted to perform specialized cellular
functions - Answer✔️✔️-- mitochondria - energy processing

- chloroplasts - sunlight energy harvesting

- b/c of the loss of genes to the nucleus, the endosymbionts cannot
survive outside the cell

- presence of organelles does NOT define eukaryotes -- nucleus does

eukaryotic cell types - animal - Answer✔️✔️-- nucleus

- linear nuclear chromosomes

- mitochondria

- centrioles

-- microtubule organizing center

- no cell wall or capsule



2

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