Table of Contents
What cell is flattened sacs?
endoplasmic reticulum (ER), in biology, a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins .
What are the flattened membranes sacks called?
The Golgi body, or Golgi apparatus is a collection of flattened membrane sacks called cisternae that carry out the processing, packaging, and sorting of a variety of cellular products in higher plants and animals.
What is a series of flattened sacs?
Rough endoplasmic reticulum (RER), series of connected flattened sacs, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that plays a central role in the synthesis of proteins.
What is the flattened system of tubular membranes?
Function- a flattened stack of tubular membranes that modifies proteins and packages them for distribution outside the cell. Definition- is a flattened stack of membranes that modifies, sorts, and packages proteins into sacs called vesicles.
What are the cellular flattened sacs discovered by Camillo Golgi?
The Golgi apparatus, also called Golgi complex or Golgi body, is a membrane-bound organelle found in eukaryotic cells (cells with clearly defined nuclei) that is made up of a series of flattened stacked pouches called cisternae.
What removes harmful substances for a cell?
cell functions
| smooth er | removes harmful substances from cell |
| mitochondria | releases energy in cell |
| golgi apparatus | prepares proteins for special job |
| vesicle | carries substances to other parts of the cell |
| cell wall | stiff structure outside the cell membrane |
Do thylakoids have double membranes?
Plant chloroplasts are large organelles (5 to 10 μm long) that, like mitochondria, are bounded by a double membrane called the chloroplast envelope (Figure 10.13). The thylakoid membrane forms a network of flattened discs called thylakoids, which are frequently arranged in stacks called grana.
Which organelle looks like a system of flattened membrane sacs?
the Golgi apparatus
The carbohydrates that the Golgi attaches to membrane proteins are often quite complex, and their synthesis requires multiple steps. In electron micrographs, the Golgi apparatus looks like a set of flattened sacs. Vesicles that bud off from the ER fuse with the closest Golgi membranes, called the cis-Golgi.
What is the function of RER and SER?
Introduction on Rough and Smooth Endoplasmic Reticulum
| RER-Rough Endoplasmic Reticulum | SER-Smooth Endoplasmic Reticulum |
|---|---|
| They are found near the nucleus of the cell. | They are found away from the nucleus in the cell. |
| Their function is to synthesize proteins. | Their function is to synthesize lipids. |
What is function of ribosome?
A ribosome functions as a micro-machine for making proteins. Ribosomes are composed of special proteins and nucleic acids. The TRANSLATION of information and the Linking of AMINO ACIDS are at the heart of the protein production process.
How many Golgi bodies are in a cell?
Animal cells generally contain between ten and twenty Golgi stacks per cell, which are linked into a single complex by tubular connections between cisternae. This complex is usually located close to the cell nucleus. Due to its relatively large size, the Golgi apparatus was one of the first organelles ever observed.