Unicellular Organisms
Circulatory system
(aka cardiovascular system) This system works as the transportation highway for the body. It consists of the heart, blood, and blood vessels. It transports substances such as oxygen, carbon dioxide, and nutrients in the body.
Eukaryotic
A cell characterized by the presence of a nucleus and other membrane-bound organelles. Eukaryotas can be unicellular (protists) or multi-cellular (fungi, plants and animals).
Organ
A collection of tissues that carry out a specialized function of the body
DNA
A complex molecule containing the genetic information that makes up the chromosomes.
Binary fission
A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of about the same size
Organ system
A group of organs that work together in performing vital body functions.
Flagellum
A long, hairlike structure that grows out of a cell and enables the cell to move.
Respiratory system
A system of organs, functioning in the process of gas exchange between the body and the environment, consisting especially of the nose, nasal passages, nasopharynx, larynx, trachea, bronchi, and lungs.
Where does cell division occur
All the tissues and organs of the body
Where does growth occur
All the tissues and organs of the body
Multicellular organisms
An organism which is made up of many different cells which work together
Prokaryotic
An organism whose cells do not have an enclosed nucleus, such as bacteria.Always unicellular
Why is cell division during adulthood primarily a replacement event
Cell division is balanced by the decrease in cell number through cell death
Cell levels of organization
Cells[smallest living unit]--->tissues[cells working together]--->organs[like heart]--->organisms[us]
Digestive system
Composed of the alimentary canal and accessory structures. Mouth, esophagus, stomach, small intestine (duodenum, jejunum, and ileum), large intestine (colon), and anus, Breaks down food into absorb-able units that enter the blood for distribution to body cells.
Photosynthesis
Conversion of light energy from the sun into chemical energy, 6CO2 + 6H2O + light --> C6H12O6 + 6O2,mostly used by plants
Osmosis
Diffusion of water through a selectively permeable membrane
Why is respiration also referred to as gas exchange
During respiration, oxygen is removed from the environment and carbon dioxide is released back into the environment
Urinary system
Eliminates nitrogenous wastes from the body. Regulates water, electrolyte and acid-base balance of the blood.
Tissues
Groups of cells with a common structure and function.
What do multicellular organisms obtain through the processes of ingestion and digestion
In ingestion the food in turned into nutrients then digestion breaks down the food for nutrients
Gas exchange respiration
In plants and animals.Oxygen is removed from the environment as we breathe in and Carbon dioxide is released back as we breathe
Respiration
Inhalation and exhalation of air.Sugar molecules are broken down to produce ATP energy
Does waste removal happen at the cellular level in multicellular animals
It occurs in the digestive system
Unicellular Organisms
Living things made up of only one cell, carry out all the functions of life,reproduces through binary fission.
Multicellular
Made up of more than one cell.Plants and animals
Diffusion
Movement of molecules from an area of higher concentration to an area of lower concentration.
The major difference between unicellular and multicellular organisms
Number of cells
Respiration
Occurs in the mitochondria, produces carbon dioxide,water and energy and releases energy
What perform respiration in multicellular animals
The organs and the tissues of the respiratory system
Transpiration
The process by which plants release water vapor into the air through stomata
What happens during the life process of growth in multicellular animals
They grow larger and start developing into adults
How are multicellular and unicellular organisms similar
They perform a number of life functions
How is oxygen used by the cells
They use the oxygen in chemical reactions with glucose or sugar that produce energy,water, and carbon dioxide.
Examples of multicellular organisms
animals, plants, protist.
What are the life functions
reproduction, digestion, growth,respiration,ingestion,waste removal,stimulus response
Phototropism
the orientation of a plant or other organism in response to light, either toward the source of light ( positive phototropism ) or away from it ( negative phototropism ).
Does respiration happen at the cellular level
yes
