Unicellular Organisms

Unicellular organisms are organisms that only have one cell. They perform the same life processes as multicellular organisms. When they are by themselves, they can only be seen with a microscope, hence their other name, micro-organisms. Unicellular organisms contain bacteria and some protists and fungi. Most unicellular organisms live in bodies of water, and has

Systems in Multicellular Organisms

Organs systems are different organs working together Systems in a Human nervous system[1] muscular system[2] circulatory system[3] digestive system[4] skeletal system[5] excretory system[6] respiratory system[7] integumentary system[8] immune system[9] Systems in a Plant root system[a] shoot system[b] ≿━━━━༺❀༻━━━━≾ Nervous System Function: responds to changes impacting the body coordinates the function of every part of the

Organs in Multicellular Organisms

Organs are different tissues formed together. Major Organs in a Human heart pumps blood throughout body blood vessels distributes blood throughout body lungs filters air windpipe transports oxygen to body and carbon dioxide out blood vessels distributes oxygenated blood throughout body mouth breaks down food into manageable proportions esophagus sends food to stomach stomach has

Tissues in Multicellular Organisms

Tissues are groups of similar cells. Main Tissues for Animals nervous tissue[1] epithelial tissue[2] muscle tissue[3] connective tissue[4] Main Tissues for Plants dermal[a] ground tissue[b] vascular tissue[c] ≿━━━━༺❀༻━━━━≾ Nervous TissueThis tissue is specialized for communication through the body. It is composed of the brain, spinal cord and peripheral nerves. The major cell groups in the

Cells in Multicellular Organisms

Cells in an Animal (Human) nerve cells[1] muscle cells[2] skeletal (voluntary) cells smooth (involuntary) cells cardiac cells bone cells[3] gland cells[4] blood cells[5] red blood cells white blood cells lymphocytes monocytes neutrophils eosinophils basophils reproductive cells[6] sperm cells ovum cells Cells in Plants parenchyma cells[a] collenchyma cells[b] sclerenchyma cells[c] xylem cells[d] phloem cells[e] meristematic cells[f]

Parts of a Multicellular Organism

As stated in Characteristics of Living Things, specialization is how different parts of a cell or organism do specific tasks. This is an innate ability of all living things. In the early stages of cell development, the cell develops the parts they need to perform a certain task. Specialization allows the organism to adapt to

Endocytosis and Exocytosis

The prefixes “endo-” means “in” and “exo-” means “out.” The suffix “-cytosis” is the transport of molecules relating to a cell. From that, we can conclude that “endocytosis” is the process of transporting molecules into a cell and “exocytosis” is the process of molecules leaving the cell. ≿━━━━༺❀༻━━━━≾ Endocytosis It is the process of how

Osmosis

Osmosis is a type of diffusion that requires water and a semi-permeable membrane. This is because osmosis is the movement of water from an area of higher concentration to an area of lower concentration across a semi-permeable membrane. Like diffusion, the molecules move from a higher concentration to a lower concentration. Water moves through but

Diffusion

Diffusion is the movement of particles across a concentration gradient. Particles move from a higher concentration to a lower concentration. Diffusion only requires a solvent and a solute to occur. Concentration gradient refers to the uneven distribution of substances. ≿━━━━༺❀༻━━━━≾ Passive Transport The solute (particles) move to get a state of concentration equilibrium. They spread

Cell Membrane

The cell membrane is something that surrounds all cells, even prokaryotes. It is a semi (selective) permeable membrane. It is a vital component in keeping the cell at homeostasis. It is, at its very roots, a barrier to protect the cell. However, it is much more than that. The cell membrane allows glucose, lipid and