• Sonuç bulunamadı

• protein synthesis occurs on ribosomes that are free-floating in the cytoplasm and on

N/A
N/A
Protected

Academic year: 2021

Share "• protein synthesis occurs on ribosomes that are free-floating in the cytoplasm and on "

Copied!
1
0
0

Yükleniyor.... (view fulltext now)

Tam metin

(1)

17

Ribosomes - protein synthetic machinery

• two subunits - large and small - each made of protein and ribosomal RNA (rRNA)

• subunits associate when they are synthesizing proteins

• protein synthesis occurs on ribosomes that are free-floating in the cytoplasm and on

ribosomes attached to ER

• rRNA is synthesized in the nucleolus

18

Golgi Apparatus -

a collection of membranes associated with the ER composed of flatten sacs called _________

concentrates and packages proteins synthesized on the ER

The Golgi is functionally associated with the ER.

19

Proteins synthesized on the ER are concentrated internally and transport vesicles are budded off Transport vesicles fuse with the Golgi, dump their contents into the Golgi

Golgi packages proteins in vesicles so that they may be excreted from the cell, or used within the cell.

Secretory vesicles - used for excretion - leave the Golgi and move to plasma membrane where they fuse and dump their contents outside - seen in many

glands

20

The Golgi Apparatus also forms lysosomes

Lysosomes - vesicles filled with digestive enzymes - used for intracellular digestion

Particles can be

taken into cell

by phagocytosis

and vesicle fused

with lysosome

The components

of organelles can

be recycled after

digestion by

lysosomes

Referanslar

Benzer Belgeler

zıda 4 aylıkken skrotal hemanjiyom tanısı alan, in- traskrotal alana yayılımı olmayan ve lokal bakım ile herhangi bir komplikasyon gelişmeden 12.. ayına ge- len bir erkek

The situations that the wait-and-see approach is not appropriate are as follows: the location of the primary tumor, the likelihood of the occult cervical metastasis being

[r]

The general view suggests that emotional parentification threatens children’s psychological devel- opment in terms of delivering negative child outcomes, because this type

Transthoracic echocardiography showed normal left ventricular function, and a mobile, irregular, crescent- shaped mass in the right atrium and ventricle measuring 5.5x1.1 cm

– transmembrane lipids for ER, Golgi apparatus, lysosomes, endosomes, secretory vesicles and the plasma membrane – lipids for mitochondrial and peroxisomal membranes.. •

Every time an actor stops and starts, a mark is placed on the floor, to help ensure the actors stop at the same place every time for framing, lighting and focus?. When determining

Mostly presynaptic cell releases a chemical signal that diffuses across cleft an binds to a membrane on postsynaptic cell.. Also human can contains electrical synapses where two cells