Cells/Organelles Flashcards

1
Q

Cell membrane

A

contains the cytoplasm of the cell
regulates materials entering and exiting the cell
made up of a hydrophilic lipid bilayer
coated by the glycocalyx

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2
Q

glycocalyx

A

a carbohydrate-enriched coating that covers the outside of many eukaryotic cells and prokaryotic cells, particularly bacteria

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3
Q

cytoplasm

A

contents of the cell, jelly like fluid
contains the cytosol liquid + all the organelles
space for dissolved molecules to move through
is basic and positively charged
acidophilic: stains pink with eosin which is an acidic dye

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4
Q

nucleus

A
"brain" of the cell
generates mRNA to direct protein synthesis
contains DNA and the nucleolus 
acidic, negatively charged
basophilic, stains blue with hematoxylin
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5
Q

nucleolus

A

produces ribosomes
located inside the nucleus
negatively charged, acidic
basophilic, stains blue with hematoxylin

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6
Q

nuclear membrane

A

contains the chromatin
regulates what enters and exits the nucleus
phospholipid bilayer membrane
pores allow for communication

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7
Q

mitochondria

A

the power house of the cell, provides energy

converts glycogen to glucose

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8
Q

ribosomes

A

synthesize proteins from mRNA
found both in the rough endoplasmic reticulum and free floating in the cytoplasm
produced in the nucleolus
large subunit is 2RNA+49 proteins, small subunit is 1RNA+33 proteins
acidic, basophilic, stains blue with hematoxylin

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9
Q

golgi complex/apparatus

A

modifies molecules from the endoplasmic reticulum
adds elements to finish off proteins
sorting and packaging

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10
Q

rough er

A

transport, managing, and packaging proteins produced by the ribosomes embedded in it
has ribosomes, granular

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11
Q

smooth er

A

transport, lipid synthesis and storage
no ribosomes, agranular
carbohydrate metabolism, calcium regulation

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12
Q

vacuoles

A

dump materials outside of the cell
storage of lipids
may contain waste

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13
Q

lysosomes

A

digest waste from the cell
“garbage men” made in the golgi complex
contain wear and tear pigment

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14
Q

microtubules

A

give structure to the cell, form the cytoskeleton
act as highways for transport of materials throughout the cell
made up of tubulin molecules

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15
Q

vesicles

A

transport materials within the cell, temporary packages, especially between the endoplasmic reticulum and the golgi complex

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16
Q

primary lysosomes

A

granular, no digested material inside

17
Q

secondary lysosomes (endolysosomes)

A

larger and more electron dense, some digested material

18
Q

tertiary lysosomes

A

older, prominent in nerve and cardiac tissue, almost completely filled with debris

19
Q

nucleoplasm

A

fluid within the nucleus containing chromatin and the nucleolus

20
Q

cytoskeleton

A

made up of microtubules, microfilaments, and intermediate filaments