-
How are phospholipids arranged to make a membrane.
Fatty acids attached to two of carbons, Phosphate atteshed to a third carbom
-
What are the roles of protein in a membrane?
Receptors to communnicate, imbedded in the membrane, outer surface flexable
-
What is the cytoplasm?
is the cell like material in which prganelles are suspended. Everything in the cell execpt the nucleolus
-
Define the term organelle
Little organelle; a structure in a cell that has a specialized function
-
What is the function of mitochondria?
Uses of fuel of sugar and oxygen, releases ATP and Carbon dixoide, Sausage shaped, outer membrane, Inner folded membrane, site for cellular respration
-
What is the function of ribosomes?
site for protein production, A cell quickly manufacture proteins required in large amounts, all ribosomes are composed of proteins and RNA molecules
-
What is the function of the endoplasmic reticulum?
protiens, lipids, and cardroydrates series of membrane, Factory of cells participates in the synthesis of protein and lipid molecules, network of membranes in cells
-
What is the function of the Golgi apparatus (bodies)?
Thin sacs of membrane, Packaging of material, package into vesicles for transport
-
What is Lysome
Vesicle containing digestive enzymes
-
What is the function of a vesicle?
membrane packaging for cellular transport
-
Describe the nuclear membrane.
- Maintains interity of the nucleus and controls passage of materials between nucleus and cytoplasm
- special pores for stuff to get in and out
-
What is chromatin?
DNA fibers coiled around proteins, condense to chomosomes during cell division
-
What is the function of the nucleolus?
Make Ribosomes, contains DNA, controls of cell function
-
Define the term diffusion
Random movement of molecules from a region of higher concentration toward one of lower concentration
-
Which types of molecules diffuse more easily through a membrane?
Non charged particles, small molecules and random movement
-
Define the term osmosis.
Movement of water through a semipermeable membrane from an area of higher water concentration to an area of lower water concentration. Salt and sugar will not go through
-
What is phagocytosis?
- To big of stuff that can not move through the membrane
- cell eating - movement into cells
-
What is used up in aerobic respiration?
- Uses Oxygen, and glucose
- Put out carbon dioxide and ATP
-
What are the products of aerobic respiration?
Energy production with oxygen
-
Under what circumstances would anaerobic respiration occur in a cell?
No Oxygen and not enough ATP
-
What toxic byproduct is produced by anaerobic respiration?
Latic Acid
-
Which is more efficient, aerobic or anaerobic respiration?
Aerobic respiration
-
What is the function of messenger RNA?
make proteins and make messenger RNA
-
What is the function of transfer RNA?
moves complimentary amino acid into correct positions
-
What is a codon and what molecules does it code for?
codon three base sequences for amino acid
-
Name the four steps of mitosis.
Prophase, Metaphase, Anaphase, Telophase
-
Describe the Prophase
Divide Chromosome, each half call cromtid
-
Describe the Metaphase
chromosome line to meet in a row, getting ready to divide
-
Describe the Antaphase
one chromosome goes away and the other goes by spindle fibers
-
Describe the Telophase
splits apart
-
Describe the structure of a chromosome during prophase.
chromosomes condense
-
What is the definition of a tissue?
Groups of similar cells that peform a specialized function
-
Where in the body are epithelial tissues found?
Lines body surfaces, lines internal cavities and organs
-
What cell shapes are possible in epithelial tissues?
Squamous (flat) cells, Cuboidal (cube shaped) cells, Columnar (column shape) cell
-
What is the difference between simple and stratified tissue?
simple one layer, stratified several layers
-
What is pseudostratified tissue?
Appears as several layers, actually is one layer, often contain cilia and contain goblet cells
-
What three things do all connective tissues contain?
Cells, Ground substance, protein fibers, blood to bone
-
Describe Fibroblast
Produce other tissues parts
-
Describe Mast cell
Produce Histamine, Stimulate inflamnation
-
Describe Macrophage
Phagocytosis, eating dead cells
-
Describe elastic fibers
stretchable fibers
-
Describe Collagen
Most common fiber strength and flexibility
|
|
