The Cell: Parts and its Function prt. II Flashcards
control the passage of ions, molecules, and RNA between the nucleoplasm and the cytoplasm.
pores
only visible and distinguishable from one another when the cell is getting ready to divide
Chromosomes
a series of interconnected membranous tubules that collectively modify proteins and synthesize lipids
endoplasmic reticulum (ER)
two functions are performed in separate areas of the endoplasmic reticulum
rough endoplasmic reticulum
smooth endoplasmic reticulum
the ribosomes attached to its cytoplasmic surface give it a studded appearance when viewed through an electron microscope
rough endoplasmic reticulum (RER)
True or False
The ribosomes synthesize proteins while attached to the ER, resulting in the transfer of their newly produced proteins into the lumen of the RER where they undergo modifications such as folding or addition of sugars
false
True or False
The ribosomes synthesize proteins while attached to the ER, resulting in the transfer of their newly synthesized proteins into the lumen of the RER where they undergo modifications such as folding or addition of sugars
true
RER or SER
makes phospholipids for cell membranes.
RER
continuous with the RER but has few or no ribosomes on its cytoplasmic surface
smooth endoplasmic reticulum (SER)
SER’s functions include
synthesis of carbohydrates, lipids (including phospholipids), and steroid hormones;
detoxification of medications and poisons;
alcohol metabolism; and
storage of calcium ions.
where sorting, tagging, packaging, and distribution of lipids and proteins take place
Golgi Apparatus (also called the Golgi body)
Golgi Apparatus also known as
Golgi body
a series of flattened membranous sacs.
Golgi Apparatus
has a receiving face near the endoplasmic reticulum and a releasing face on the side away from the ER, toward the cell membrane
Golgi apparatus
the transport vesicles that form from the ER travel to the receiving face, fuse with it and empty their contents into the lumen of…
Golgi apparatus
true or false
As the proteins and lipids travel through the Golgi, they undergo further modifications.
true
true or false
As the minerals travel through the Golgi, they undergo further modifications.
false
the cell’s “garbage disposal.
Lysosomes
aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles
Digestive enzymes within the lysosomes
aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles
Digestive enzymes within the lysosomes
lysosomes are important for digestion of the food they ingest and the recycling of organelles in what cell
single-celled eukaryotes
membrane-bound sacs that function in storage and transport
Vesicles and Vacuoles
Vesicles or Vacuoles
somewhat larger than vesicles
Vacuoles
Vesicles or Vacuoles
the membrane does not fuse with the membranes of other cellular components
Vacuoles
Vesicles or Vacuoles
can fuse with other membranes within the cell system
Vesicles
enzymes within what vacuoles can break down macromolecules
plant vacuoles