BIOL 348 EXAM 1 ASSESSEMENT QUESTIONS AND 100% CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS

BIOL 348 EXAM 1 ASSESSEMENT QUESTIONS AND 100% CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS 2025 EXAM  BIOL 348 EXAM 1 ASSESSEMENT QUESTIONS AND 100% CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS Anatomy - CORRECT ANSWER The study of body structure and their relationship to one another Ex: Bone Physiology - CORRECT ANSWER The function of the body's structural mechanism or how all of the body parts work and carry out their life-sustaining activities Ex: How bone works Chemical - CORRECT ANSWER See atoms and molecules interacting Not alive Atoms - Molecules - Hemoglobin Cellular - CORRECT ANSWER Cells are made of molecules Alive/Homeostasis Grow, reproduce, exchange energy, evolve Tissue - CORRECT ANSWER A group of similar cells that perform the same function Organ - CORRECT ANSWER Group of tissues that work together to perform closely related functions (epithelial, connective) Not every group of tissues makes an organ Organ System Level - CORRECT ANSWER Organ systems consist of different organs that work together closely Ex: Mouth and digestive system Organismal level - CORRECT ANSWER All organ systems working together How do we know something is alive? - CORRECT ANSWER 1) Composed of a single cell/group of cells 2) AT LEAST physical and chemical machines 3) Respond to short term changes in environment -Basis for homeostasis 4) Grow and reproduce -Cellular and organismal level 5) Adapt to long term changes in environment through natural selection -Mutations are random Homeostasis - CORRECT ANSWER -A tendency to maintain a balanced or constant internal environment or equilibrium -Different -Life is -Steady state -Dynamic -Out of Equilibrium Boundary Organ Concept - CORRECT ANSWER Boundary- Limit between something and something else Boundary Organ: Ability to change extracellular fluid -Internal vs External Environment Internal: Muscular, Endocrine, Immune, Respiratory Intracellular fluid (ICF) - CORRECT ANSWER Fluid within cells Extracellular Fluid (ECF) - CORRECT ANSWER Fluid outside cells Intercellular/Interstitial- Tissue fluid inbetween cells Plasma- Liquid part of blood vessel Differential Distribution of Solutes - CORRECT ANSWER 67% of cells is intracellular fluid (ICF) 33% Is inbetween cells or plasma (ECF) Some proteins more in ICF than ECF Protein attached to cell membrane sodium-potassium pump - CORRECT ANSWER A transport protein in the plasma membrane of animal cells that actively transports sodium out of the cell and potassium into the cell. How is this homeostasis controlled? - CORRECT ANSWER Negative feedback - CORRECT ANSWER A mechanism of response in which a stimulus initiates reactions that reduce the stimulus Ex: If cold, body shivers to create heat in muscles Stops response Most common Positive reinforcement - CORRECT ANSWER The reinforcement of a response by the addition or experiencing of a pleasurable stimulus Does not stop response Ex: Contractions - Pressure in cervix- brain sends oxytocin to increase contractions Feedback loop happens until baby is out Components of a feedback loop - CORRECT ANSWER Receptor- monitors a controlled condition Control center- Determines next action Effector- Receives direction from that control center -produces a response that changes the controlled condition -Less effect when close to condition -More effect when further from condition