BIO 201- Midterm Exam Study Guide With Correct Answers.

BIO 201- Midterm Exam Study Guide With Correct Answers. anatomy - ANS - study of the structure/morphology of the human body and its parts physiology - ANS - study of the functions of the human body and its parts List the levels of organization from simplest to most complex. - ANS - subatomic particles atom molecule macro-molecule organelle cell tissue organ organ system organism cell - ANS - -composed of organelles -the basic units of structure and function of the body tissue - ANS - layer or mass of cells with specific function organ - ANS - group of different tissues with a function system/ organ system - ANS - group of organs with common function homeostasis - ANS - maintenance of a stable internal environment metabolism - ANS - all of the chemical reactions in an organism that support life positive feedback loop - ANS - -homeostatic mechanism -response enhances or exaggerates original stimulus -uncommon in body -short lived -examples are contractions in labor by oxytocin and platelet plug formation+ blood clotting negative feedback loop - ANS - -homeostatic mechanism -most feedbacks in the body -response reduces or shuts off original stimulus/ goes in opposite direction -examples are regulation of body temperature, regulation of blood glucose by insulin Human life depends on what 5 environmental factors? - ANS - 1) water 2) food 3) oxygen 4) heat