Cells, tissues, organelles, organs, systems
Tissues, cells, organs, organelles, systems
Organs, organelles, systems, cells, tissues
Organelles, cells, tissues, organs, systems
Ability of human beings to keep body weight within normal limits
Maintenance of a constant external temperature inside a room
Ingestion of enough food to keep hunger pains from developing
Tendency of the body to maintain a stable environment
It controls the amount of heat produced
Its a source of energy
It is used to release energy that is stored in food
It is part of water and is necessary to keep organisms hydrated
The face is forward
The arms are at the sides
The palms are facing backward
The body is erect
A vicious circle
None of the above
Covers organs; lines cavities
Lines cavities; covers organs
Is thick; is thin
Secretes mucous;secretes serous fluid
A+B --> C+D
Form covalent bonds with water
Ionize when dissolved in water
Cannot conduct electricity in solution
Are not found in the human body in any appreciable amounts.
Concentration of hydrogen ions in solution
Amounts of salts dissolved in water
Number of hydroxyl ions in water
Strength of an electrical current carried by a solution
Release of energy
Digestion of food particles
Growth of body parts
Neutralization of acids by buffers
One atom sharing and another atom gaining electrons
Atoms sharing pairs of electrons
Oppositely charged atoms being attracted to each other
All of the above
A group of substances that are insoluble in water.
A number of compounds such as phospholipids, cholesterol and fats.
Fat molecules containing C, H, & O but the proportion of oxygen is much smaller than in carbohydrates.
All of the above.
Serve as structural materials, energy sources, and chemical messengers.
Contain C, H, O and N, and sometimes sulfur.
Can act as enzymes
All of the above.
Protein that speeds up chemical reactions without being changed or depleted.
Protein that functions as a hormone
Protein that inhibits chemical reactions by being changed or depleted
Fibrous protein that is used to help build certain tissues in the body
Bond more strongly