Cells Flashcards
Digests worn out or non usable cell structures
lysosome
Use oxygen to detoxify harmful substances
peroxisomes
Part of the cytoskeletal system that determines overall cell shape
microtubules
Site of ribosome synthesis
Nucleolus
Double membrane barrier for the control center of the cell
Nuclear envelope
Fingerlike projections that increase the cell’s surface area
microvilli
Organelle that is double membraned and the site of ATP formation
mitochondria
Synthesis cholesterol and fat
smooth Er
Cellular extensions that move substances along the cell surface
cilia
Network of channels (with ribosomes) for carrying substances from one part of a cell to another part
Rough Er
Network of protein structures in the cytoplasm that forms an internal framework for the cell
cytoskeleton
Packages proteins to be transported and released from the cell
golgi apparatus
The selectively permeable barrier of the cell that separates it from its surroundings
plasma membrane
These direct the formation of the mitotic spindle during cell division
centrioles
The material that makes up chromosomes
chromatin
Contains the genetic material and is the “headquarters” of the cell
nucleus
Cellular region between the nuclear and plasma membrane. Contains cytosol, organelles, and inclusions
cytoplasm
The sites of protein synthesis in the cell
ribosomes
diffuses from low to high (water leaves cell)
hypertonic
Inside cell is lower concentration stays equal inside and outside
hypotonic
Water concentration stays equal inside and outside the cell (no net movement)
isotonic
No energy required
passive transport
Energy required (ATP)
active energy
Passes through special pores called aguaporins created by proteins in the membrane
Osmosis
Tunnels that molecules can enter and exit (can open and close)
Channel proteins
T or F:
the heads are polar which means they are hydrophilic (water loving)
true
T or F:
the non polar tails are hydrophobic (water fearing)
true
