Cell organelles Flashcards

1
Q

FUNCTION OF rough ENDOPLASTIC RETICULUM ?

A

translation and folding of new proteins

manufacture of lysosomal enzymes

site of N-linked glycosylation

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2
Q

FUNCTION OF smooth ENDOPLASTIC RETICULUM ?

A

steroid, lipid synthesis

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3
Q

examples of cells with extensive RER

A

pancreatic cells, goblet cells, plasma cells

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4
Q

examples of cells with extensive SER

A

adrenal cortex, hepatocytes, testes, ovaries

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5
Q

Golgi apparatus Modifies, sorts, and packages molecules that are destined for cell secretion what other function do they have ?

A

addition of mannose-6-phosphate to proteins

designates transport to lysosome

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6
Q

Mitochondrion Contains mitochondrial genome as ?

A

circular DNA

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7
Q

Nucleus role ?

A

DNA maintenance

RNA transcription

RNA splicing ( removes the intervening, non-coding sequences of genes (introns) from pre-mRNA and joins the protein-coding sequences (exons)

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8
Q

Lysosome role ?

A

Breakdown of large molecules such as proteins and polysaccharides

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9
Q

Nucleolus role ?

A

Ribosome production

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10
Q

Ribosome role ?

A

Translation of RNA into proteins

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11
Q

Peroxisome

A

Catabolism of very long chain fatty acids and amino acids
Results in the formation of hydrogen peroxide

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12
Q

Proteasome

A

Along with the lysosome pathway involved in degradation of protein molecules that have been tagged with ubiquitin

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