Chapter 3 Flashcards
Are cells are the same?
No
What do all cells share?
General structure
What is the control center of cell?
The nucleus
What does the nucleus contained?
Genetic material DNA
What are the three regions of the nucleus
Nuclear membrane
Nucleolus
Chromatin
Nuclear membrane
Barrier of nucleus
What does the nuclear membrane consist of
Double phospholipid membrane
What do nuclear pores allow
Exchange of material with the rest of the cell
How many nucleoli does the nucleus contain
One or more
The nucleoli is the site of what production
Ribosomes
How do ribosomes migrate to the cytoplasm?
Through the nuclear pores
What is genetic material composed of
DNA and protein
How many chromosomes in humans
46
Wha is DNA the instruction for or blueprint of
The making of proteins
What do proteins then make each cell type do
Carry out its unique function
Plasma membrane
Barrier for cell contents
Double phospholipid
Hydrophobic- water haters
Hydrophilic - water lovers
What does the phospholipid contain
Protein, cholesterol, glycoproteins
What are cells?
The building blocks of all living things
Microvili
Finger like projections that increase surface area for projection
Chtoplasm
Material outside nucleus and inside the plasma membrane
Cytosol
Fluid that suspends other elements
Organelles
Each has specialized functions within a cell
Ribosomes
Made of protein and RNA
Synthesize protein
Located freely in cytoplasm
On rough Ed
Endoplasmic reticulum
Fluid filled tubles for carrying subtancds
Rough e.r
Site where building materials of cellular membrane are formed
Smooth e.r
Functions in cholesterol synthesis and breakdown, fat metabolism. And detoxification of drugs
What packages does the Golgi apparatus produce
Secretory vesicles
Cell membrane components
Lysosomes
What are lysosomes
Contains enzymes that digest no useable materials within the cell membrane
Peroxisomes
Membrane out sac of oxyidisoe enzymes
Detoxify harmful substances
Peroxisome
Different types of cytoskeleton
Micro tubles
Microfilaments
Interim date filaments
Membrane transport
Movement of substance into and out of cell
Passive transport
No energy is required
Active transport
Cell must provide metabolic energy
Solution
Homogeneous mixture of two or more components
Solvent
Dissolving medium
Solute
Components in a smaller quantity within a solution
Diffisiun
Particles tend to distribute themselves evenly within a solution
Facilitated diffusion
Substances require a protein carrier for passive transport
Filtration diffusion
Water and salutes are forced through a membrane by fluid or pressure