Cells Flashcards

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1
Q

All cells have:

A

proteins
lipids
carbohydrates
plasma membrane

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2
Q

flagella

A

long filaments that rotate to propel cell

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3
Q

fimbriae

A

needle like projections that promote attachment to other cells or surfaces

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4
Q

Endosymbiosis theory

A

mitochondria and chloroplast were once free-living bacteria engulfed by ancestor of modern eukaryotes but were not destroyed instead mutually beneficial relationship evolved

Because both:
Mitochondria have their own mitochondrial DNA (mtDNA)
Grow and divide independently of cell division
Manufacture their own ribosomes

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5
Q

Unique plant structures

A

central vacuole
chloroplast
cell wall

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6
Q

Nucleus

A

large, highly organized membrane bound compartment

stores decodes and processes DNA

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7
Q

Nucleolus

A

where ribosomal RNA is synthesized and ribosome subunits are assembled

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8
Q

nuclear envelope

A

double membrane surrounding and protecting nucleus

fibrous proteins

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9
Q

ribosomes

A

manufacture proteins

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10
Q

Endoplasmic Reticulum (ER)

A

enclosed factory continuous with the nuclear envelope

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11
Q

Rough (RER)

A

studded with ribosomes
synthesizes, folds, processes proteins

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12
Q

Smooth (SER)

A

contains enzymes to catalyze reactions involving lipids
synthesize lipids
poison detoxification
calcium ion storage

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13
Q

Golgi apparatus

A

where proteins go after ER
processes, sorts, and ships RER proteins

Cis side receives
Trans side ships

protein modification and sorting

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14
Q

Lysosomes

A

recycling center
enzymes
macromolecule digestion
autophagy

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15
Q

Peroxisome

A

center of reduction oxidation reactions

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16
Q

Mitochondria

A

supplies ATP

17
Q

Chloroplasts

A

photosynthesis
3 membranes

18
Q

prokaryotic only structure

A

nucleoid

19
Q

eukaryotic only structures

A

nucleolus, lysosomes, mitochondria
membrane enclosed organelles
nucleus

20
Q

Pulse

A

cells are exposed to a high concentration of radioactive labeled amino acid to tag proteins being synthesized

21
Q

Chase

A

radioactive amino acids washed away and unlabeled amino acids are added then their path examined

22
Q

pulse chase experiment

A

tracks movement of proteins through systems

23
Q

nucleoid region

A

where prokaryotic cells put DNA

24
Q

unique animal cell structure

A

centrioles

25
Q

both plant and animal cells have

A

mitochondria, golgi, membrane, nucleus, cytoskeleton, er

26
Q

plasmids

A

in prokaryotes circular super coiled DNA molecules