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A&P I > Eukaryotic Cell > Flashcards

Eukaryotic Cell Flashcards

1
Q

Organelles

A

Small structures that perform specific metabolic function of the cell. ‘Little organs’

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2
Q

Mitochondria

A

Site of ATP synthesis; powerhouse of the cell.

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3
Q

Ribosomes

A

RNA+PROTEIN; site of protein synthesis. Found on rough ER and free throughout cell.

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4
Q

Rough Endoplasmic Reticulum

A

Sugars attach to proteins within cisterns, where proteins are bound in vesicles for transport to Golgi apparatus/other sites Membranous system studded w/ ribosomes.

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5
Q

Smooth Endoplasmic reticulum

A

Site of lipid and steroid (cholesterol) synthesis, lipid metabolism, drug detoxification.

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6
Q

Golgi apparatus

A

Packages, modifies, and separates proteins for secretion from the cell. Stack of flattened membranes.

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7
Q

Peroxisomes

A

Membranous sacs contain CATALASE + OXIDASE detoxify toxic substances. Catalase breaks down hydrogen.

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8
Q

Lysosomes

A

Membranous sacs containing acid HYDROLASE. intercellular digestion

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9
Q

Microtubules

A

Support the cell and give it shape. Cell movement.

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10
Q

Intermediate filaments

A

Protein fibers.

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11
Q

Microfilaments

A

Help form cells cytoskeleton. Protein actin. Intercellular movement.

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12
Q

Flagellum

A

Like cilli but longer, tail-like extension, propels the cell.

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13
Q

Microvilli

A

Tubular tensions of the plasma membrane, contain actin filaments. Increase surface area for absorption.

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14
Q

Nucleus

A

Control center of the cell; transmits genetic information and provides instruction for protein synthesis. Largest organelle.

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15
Q

Nuclear envelope

A

Double membrane structure; regulates passage of substances to and from the nucleus.

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16
Q

Nucleolus

A

Ribosomal RNA and proteins. Manufactures ribosomes

17
Q

Chromatin

A

DNA+histone proteins.

18
Q

Plasma membrane

A

Separates intercellular fluid from extracellular fluid. External cell barrier. Double layer of lipids embedded with proteins

19
Q

Cytoplasm

A

Substance between the cell membrane and the nucleus, containing CYSTOL, organelles, cytoskeleton, and various particles.

20
Q

Cytoskeleton

A

Filament and tubules that support the cell and give it shape.

21
Q

Desmosomes

A

Cell junction composed of thickened plasma membranes joined by filaments.

22
Q

Glycocalyx

A

A layer of glycoproteins and glycolipids on or near a cells plasma membrane.

A&P I (1 decks)

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