### process | respiration:

Aerobic respiration
* Most aerobic respiration leads to production
  - provides energy
* Some aerobic respiration involves breakdowns
  - releases energy
* ceases, anerobic respiration begins.
* fairly recent development in the history of life.
* is an oxidative process which uses oxygen as a final electron acceptor
  - at extracting chemical energy than is fermentation
  - composed of three separate processes
  - done when there large amount of oxygen available
  - much more rapid and efficient than anaerobic metabolism
  - possible only if oxygen is present in protozoan cells
* is the most efficient form, and requires oxygen
  - of all because the electron falls so far
  - the production of carbon dioxide and water
* occurs only in the presence of oxygen.
* produces carbon dioxide as a waste product
  - many times more energy than anaerobic respiration does
  - much more than anaerobic respiration
* provides energy much faster than anaerobic respiration
* releases energy by breakdown of glucose to carbon dioxide and water.
* uses oxygen and releases a large amount of energy
  - carbon in the form of carbon dioxide

### process | respiration:

Anaerobic respiration
* Most anaerobic respiration provides energy
  - enough energy
  - releases oxygen
  - requires oxygen
* Some anaerobic respiration has equations
  - occurs in absence
* Some anaerobic respiration produces acid
  - lactic acid
* can provide energy to animals for several days in the absence of oxygen
  - use nitrate, sulfate, etc. as electron acceptor
* common occurrence.
* is in the absence of air
  - necessary above the anaerobic threshold
  - the build up of lactic acid which also causes cramps
* lets organisms live in places where there is little or no oxygen.
* prevents muscle fatigue.
* produces more energy for cells than does aerobic respiration.
* releases much less energy than does aerobic respiration
* takes place in a. the chloroplast
  - our skeletal muscles
* uses oxygen from the breakdown of compounds such as nitrate or sulfate
  - sulfur, methane or hydrogen as electron acceptors
* very slow process.

Cell respiration
* Some cell respiration occurs in organelles.
* beautiful process that is vital to the well being all living things.
* is the process by which consumers, detritus feeders and decomposers obtain energy.
* releases carbon dioxide
* takes place in the mitochondria of animals and in the cytoplasm of plants.
* uses glucose and oxygen and produces carbon dioxide and water as waste products.

Dark respiration
* Some dark respiration shows large spikes.
* taking place in plants is independent of the presence of light.

### process | respiration:

Insect respiration
* happens without lungs.
+ Insect, Physiology, Respiratory and circulatory systems:
  * Insect respiration happens without lungs. There is a system of internal tubes and sacs through which gases diffuse or are actively pumped. Air is taken in through openings on the sides of the abdomen called spiracles. As larvae, many insects have gills that can extract oxygen dissolved in water, while others need to rise to the water surface to replenish air supplies which may be held or trapped in special structures.

Rapid respiration
* is called tachypnea.
* produces more heat, which can increase the temperature still further.