Level of organization in the body and 10 characteristics of human life

Chemical level

• it starts with atom which are bonded together to form molecule.

• it is then combined with other molecule and atoms to form macromolecule

cellular level

• smallest unit that have characteristic in life

• The body have 100 trillion cells

• Each cell have cytoplasm, Cell membrane, and nucleus

System level

• many types of system works together

• 11 major types of systems in the body

Organism level

• have all of the organization of levels.

Organelle level

• made up of chemical groupings

• Tiny organ like things that are in the cells

• without organelles, cells would not survive.

Tissue level

• similar cell that develop to the some part of embryo

• tissue cell are surrounded by matrix - non living cellular substances

• 4 major types of tissue in the body: Connective tissue, Muscle tissue, Epithelial tissue, and Nervous tissue

Organ level

• made up of different tissues and have a different function level.

• For example - Liver → organ located in the abdominal region of the body.

• The liver stores some vitamin and minerals

• The liver stores glycogen → Stored form of energy

• Helps in old red bloodcell destruction

• Helps remove toxins or detoxiy the blood to get rid of harmful substances

Growth

• increase in cell size and numbers

• Increase in size of a person, organ, or structure.

• As the body grows the brain becomes more complex.

Respiration

• gas exchange

• Oxygen ←→ Carbondioxide

Circulation

• Nutrient rich fluid move throughout the body.

• Accomplished through blood vessels, circulate throughout the body.

• Circulate → delivering nutrients and removing wastes

Excretion

• removal of waste products from the body.

• Example: Breathing & Urinating

Reproduction

• ability to partake in the formation of offspring, formation of new cells for tissue growth, repair or replacement.

Metabolism

• Chemical Reactions within the body cells.

• Breakown of complex substances into simple building blocks.

Organization

• condition in which parts of an organism have specific relationships to each other and interact to perform specific functions

Responsiveness

• abiity to respond to a stimulus → change in internal & external environment

• as the temperature drops because of cold weather, the muscle shiver to increase body temp.

Conductivity

• transmit electrical waves/ electrical impulses → accomplished by neurons which are in nerve cells.

Digestion

• food materials are broken down into simpler substances

• absorbed by the body and used by the cells in the body

• Done by enzymes released in the mouth, stomach, and intestines

Absorption

• movement of molecules (Nutrients, water, O, CO2) into body fluids to be transported into cells

• Most absorption of molecules takes in the lungs & intestines

secretion

• ability to produce and release substances

• Survival needs: Fluid, oxygen, food, appropriate body temp, and appropriate atmospheric pressure

Movement

• Motions of the whole body, individual organs single cells

Differentiation

• developmental process by which non- specialized cells change into specialized cel with distinctive structural and functional