BIO 116 EXAM 1 UPDATED ACTUAL QUESTIONS AND VERIFIED ANSWERS

BIO 116 EXAM 1 UPDATED ACTUAL
QUESTIONS AND VERIFIED ANSWERS

●● Physiology
Answer: the study of how the body and its parts work or function


●● Atoms
Answer: smallest unit of matter


●● Molecules
Answer: Groups of two or more atoms held together by chemical bonds


●● Macromolecules
Answer: A very large organic molecule composed of many smaller
molecules


●● cells
Answer: The basic unit of structure and function in all living things


●● Tissues
Answer: Groups of cells with a common structure and function.

,●● Organs
Answer: Groups of tissues that work together to perform a specialized
function or related functions


●● Organ systems
Answer: A group of two or more organs working together for a specific
job; e.g. the digestive system


●● organisms
Answer: organ systems functioning together


●● Homeostasis
Answer: When factors in the
external environment
(the outside world)
change, conditions in the
internal environment
(the fluid around
the body cells) must remain stable.


●● Responsiveness
Answer: Reaction to a change inside or outside the body

, ●● negative feedback
Answer: A mechanism by which a deviation in a variable from its set
point is corrected Example: A thermostat


●● positive feedback
Answer: A mechanism by which a deviation in a variable from its set
point
moves conditions farther away from the normal range


Examples :
Blood clotting leads to more blood clotting, which stops bleeding


●● cranial cavity
Answer: contains the brain


●● vertebral canal
Answer: contains the spinal cord


●● thoracic cavity
Answer: cavity housing lungs and heart


●● abdominopelvic cavity