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BIOL 203 (Purdue) EXAM 1 QUESTIONS AND ANSWERS RATED A. $16.19   Add to cart

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BIOL 203 (Purdue) EXAM 1 QUESTIONS AND ANSWERS RATED A.

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  • Course
  • BIOL 203
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  • BIOL 203

BIOL 203 (Purdue) EXAM 1 QUESTIONS AND ANSWERS RATED A.

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  • September 20, 2024
  • 28
  • 2024/2025
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  • BIOL 203
  • BIOL 203
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BIOL 203 (Purdue) EXAM 1 QUESTIONS
AND ANSWERS RATED A.
peroxisomes
Correct Answer -break Dow fatty acids, synthesize cholesterol, and make
parts of the myelin sheath


centrosome
Correct Answer -area where microtubules are produced


microfilaments
Correct Answer -involved in cellular movements


microtubules
Correct Answer -form internal skeleton


inclusions
Correct Answer -lipid droplets, glycogen granules, and melanin granules


movement through the cell membrane
without energy
Correct Answer -diffusion
facilitated diffusion - channels
osmosis


movement through the cell membrane with energy
Correct Answer -active transport - carrier proteins endocytosis

,exocytosis


endocytosis
Correct Answer -phagocytosis: engulfing particles
pinocytosis-internalization of fluids in the form of tiny droplets
receptor-mediated endocytosis- certain molecules are taken in due to
receptor


exocytosis
Correct Answer -vesicles fusing with the cell membrane and opening out
to the outside


cells that do not divide
Correct Answer -skeletal and muscle
differentiated neurons


cell division
Correct Answer -


epigenetic s
Correct Answer -dan methylation: causes transcription; silencing


tumor suppressor genes
Correct Answer -inactivation of a tsg causes cancer if both genes are
inactivated
viruses can inactivate it

, porto-oncogenes
Correct Answer -activation causes cancer
viruses can activate it


retinoblastoma tumor supressor gene
Correct Answer -it doesnt allow cells to divide
retinoblastoma : childhood tumors of the retina of the eye
that can lead to loss of the eye


p53 tumor surpresos gene
Correct Answer -most frequently mutated
(protein atomic weight)


apoptosis
Correct Answer -cell shrinks and may round up
their dna breaks up and the chromatin condenses
the nucleus breaks up into masses of condensed chromatin
cell develops blebs
blebs are phagocytized by surrounding macrophages


necrosis
Correct Answer -accidental cell death
cell and mitochondria change shape, swell, and lose their function
membranes break down
cells and organelles undergo lysis
substances are released that trigger inflammation

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