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Why is diffusion insufficient meet the oxygen requirements of multicellular organisms like humans?
In single-celled organisms the entire surface of the organisms is in contact with the environments for the diffusion of substances. In multi-cellular organisms all the cells may not be in direct contact with the surrounding environment. So simple diffusion will not meet the requirements of all the cells.
Do all living things on earth have at least 25 protons in their atoms?
No. Living things are over 90% carbon, oxygen, hydrogen, and nitrogen. Carbon has 6 protons, nitrogen has 7, hydrogen has 1, and oxygen has 8. Other elements found in the body, such as calcium, potassium, and phosphorus, also have less than 25 protons. Iron, used to carry oxygen in the blood has 26. However, single-celled organisms do not contain iron and all of their atoms have less than 25 protons.
What organisms make most of earth's oxygen?
sea organisms
Why do organisms die when they don't have oxygen?
organisms need oxygen because if organism didnt they would mutate into non organisms and create virus called stilia
Which of these is most inclusive level of organization listed here is an a. organ b. atom c. molecule d. multicelled organism e. cell?
Organ, since it is composed if cells, tissues, molecule, and multi-celled organisms. Multi-celled organisms are only composed of one then one cell.
How do single-celled pond organisms get the oxygen they need to survive?
ask your mom
Is bacteria single or multicellular?
Usually Bacteria is unicellular, but in some cases multicellular.
Bacteria are single celled organisms?
yes bacteria is a single celled organisms.
What is a group of single celled organisms?
what is the group of mainly single celled organisms called
Generally are single celled organisms?
Amoebas are single celled organisms. They do not have any particular shape. Another group of single-celled organisms like amoebas are protists.
Is bacteria single-celled or multi-celled?
Bacteria are single-celled organisms.
What organisms first introduced oxygen into earth's atmosphere?
Colonies of algae-like single celled organisms called stromatolites
Are single celled animals and single celled organisms different?
"unicellular"
Are there more single-celled or multi-celled organisms on earth?
multi-celled organisms have more than 1 cell.But a singe-celled organism does not.
What are the example of protist?
The kingdom Protista contain all single celled organisms. Examples are: protozoans (animal-like single celled organisms) and algae (plant-like single celled organisms).
Who wrote the book Single Celled Organisms?
Single-celled Organisms was written by Helmut Schenk.
Are single celled organisms.?
no
