Organelles of the Cell Flashcards

0
Q

nucleus

A

houses the cells DNA

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1
Q

cytoplasm

A

all cellular contents between plasma and nucleus

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2
Q

plasma membrane

A

flexible outer layer

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3
Q

cytoplasm

A

contents of the cell between the plasma membrane and the nucleus
has cytosol and organelles that perform different functions in the cell

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4
Q

cytoplasmic cytosol

A

fluid protein, contain water, ions, glucose, amino acids, proteins, lipids, ATP, and waste products
the site of many chemicals reactions required for cells existence

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5
Q

cytoplasmic organelles

A

structures of the cytoplasm that performs specific functions in cellular growth, maintenance and reproduction

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6
Q

endoplasmic reticulum

A

complex organelle

a network of membranes in the form of flattened sacs and tubules

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7
Q

rough and smooth ER

A

two kinds of endoplasmic reticulum

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8
Q

ribosomes

A

particles composed of proteins and rRNA

composed of two subunits

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9
Q

golgi complex

A

group of flattened membraneous sacs. first step in transport process

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10
Q

mitochondria

A

outer and inner membrane with a small fluid filled space between them

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11
Q

cristae

A

inner membrane contains a series of elongated fluid filled folds (mitochomdria)

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12
Q

lysosomes

A

membranous sacs that contain enzymes

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13
Q

peroxisomes

A

most abundant in cells of the liver

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14
Q

proteasomes

A

tiny barrel shaped structure of four stacked rings of proteins around a central core

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15
Q

centrosomes

A

non-membranous structure composed of two hollow cylinders called centriols

16
Q

cilia

A

moves fluid over the cells suface

17
Q

flagella

A

moves an entire cell

18
Q

cytosol

A

intracellular fluid that surrounds the organelles; 55% of total cell volume
site of many chemical reactions required for a cells existence
75-90% water

19
Q

cytosol function

A

site of many chemical reactions that provide the building blocks for maintenance of cell structures and cell growth

20
Q

organelles

A

special structures within the cell that have characteristic shapes
perform functions that aid in cellular growth, maintenance, and reproduction
each type have their owm set of enzymes

21
Q

cytoskeleton

A

maintains shape and general organization of cellular contents

22
Q

centrosomes

A

used for growth of the mitotic spindle and microtubule formation

23
Q

endoplasmic reticulum (ER)

A

synthesizes glycoproteins and phosopholipids

smooth ER has various functions depending on what type of cell it is in

24
golgi complex
entry (cis) face accepts proteins from ER | exit (trans) face modifies the molecules further and packages them for transport
25
lysosomes
garbage disposal of the cell | enzymes breakdown protein, carbohydrates, and nucleic acids as well as foreign particles and worn out cells
26
perioxisomes
contains enzymes oxidase and catalase oxidase is important in the breakdown of many organic molecules catalase is important in the breakdown of H2O2
27
proteasomes function
degrades unneeded, damaged, or faulty proteins by cutting them into small peptides
28
mitochondria
powerhouse of the cell | generates ATP through cellular respirations