Chapter 3 Flashcards
(50 cards)
Two major parts of molecules that make up the plasma membrane
Phosphorus and proteins
Three principle part of a generalized animal cell
Plasma membrane, cytoplasm, nucleus
What makes up the majority of the membranes framework
Phospholipids
These proteins extend across the plasma membrane, helping to move substances in and out of the cell acting as recognition sites for hormones or serving as enzymes to speed reactions
Integral
These proteins are loosely attached to the surfaces of the cell membrane, serving as cytoskeleton anchors or cell identity markers
Peripheral
What do we mean when we say the cell membranes maintains an electrochemical gradient
Difference in change
The movement of substances across a cell membrane using cellular energy (ATP)
Active
The movement of substances across a cell membrane using no cellular energy
Positive
Net movement of any substance from region of higher concentration to region of lower concentration : membrane not required
Simple diffusion
Movement is across a semipermeable membrane with help of a carrier : ATP not required
Facilitated diffusion
Net movement of water from region of high water concentration to region of lower water concentration across semipermeable : important in maintains normal cell size and shape
Osmosis
Movement of molecules from high-pressure zone to low-pressure zone we in response to force of blood pressure
Filtration
Cellular support and movement
Cytoskeleton
Selective permeability
Plasma membrane
Protein synthesis
Ribosomes
Lipid synthesis, detoxification
Smooth ER
Packages proteins and lipids
Golgi complex
ATP production
Mitochondria
Digest bacteria, worn out organelles
Lysosomes
Forms mitotic spindle
Centre some
Short-hair like structures on the surface of some cells
Cilia
Long cell projection used to propel sperm cells
Flagella
Chemical substances produced by cells: not bounded by a membrane
Inclusions
Low power
10x
