BIOS 255 Comprehensive Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) What is homeostasis? - Correct Answers ✅maintenance of a stable internal environment with the contribution of all organ systems What are the components of a homeostatic mechanism? - Correct Answers ✅-Stimulus -Receptors -Control center -Effector -Response What is a negative feedback mechanism? - Correct Answers ✅Body REVERSES, or goes against, an original stimulus to return to homeostasis
Example: Blood glucose regulation after eating.
What is a positive feedback mechanism? - Correct Answers ✅Amplifies the change from the normal level. (Agrees with the change)
Example: Childbirth, blood clotting
What feedback mechanism is most common? - Correct Answers ✅negative 1 / 3
BIOS 255 Comprehensive Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) Inferior - Correct Answers ✅Below; at a lower level Superior - Correct Answers ✅Above; higher level Lateral - Correct Answers ✅Side; Away from the midline of the body Proximal - Correct Answers ✅Closer to the point of attachment Distal - Correct Answers ✅Father away from the point of attachment Medial - Correct Answers ✅Toward the midline of the body Sagittal - Correct Answers ✅divides body into left and right Transverse - Correct Answers ✅Divides body into upper and lower parts Anterior - Correct Answers ✅toward the front of the body Posterior - Correct Answers ✅toward the back of the body 2 / 3
BIOS 255 Comprehensive Exam Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) Frontal plane - Correct Answers ✅Divides the body into anterior (front) and posterior (back) portions.Which part of the atom is involved in chemical reactions? - Correct Answers ✅Electrons Which part of the atom makes up the atomic number? - Correct Answers ✅Protons pH scale - Correct Answers ✅Measurement of hydrogen ion concentration
- pH < 7: Acidic
-pH > 7: Alkaline (basic)
-pH = 7: neutral
What is the main function on rough endoplasmic reticulum? - Correct Answers ✅Protein synthesis What kind of cell division results in a diploid, increasing the number of cells? - Correct Answers ✅Mitosis How many pairs of chromosomes do humans have? - Correct Answers ✅23 pairs
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