BIOS251-Exam 1 (Week 1-
Intro) QUESTIONS AND
VERIFIED CORRECT
ANSWERS GRADED A+
[LATEST 2026-2027] 100%
GUARANTEED PASS
negative feedback - CORRECT ANSWER-a reaction that causes a decrease in function; essentially
reduces, shuts off, or counterbalances the original stimulus that caused the homeostatic
imbalance
- causes the given variable to change in the opposite direction of the inital change, and brings
the system back to homeostasis
- ex: temp, blood glucose levels, blood volume, pH, composition
positive feedback - CORRECT ANSWER-the response of the effector works to further increase
the change that was caused by the stimulus; may enhance, exaggerate, or amplify the original
stimulus
- ex: childbirth, blood clot formation, menstrual cycle
anatomical position - CORRECT ANSWER-stand erect, arms at the side with palms facing
forward (thumbs pointing away from the body), feet flat on the floor
mattering - CORRECT ANSWER-anything that takes up space and mass
, protons - CORRECT ANSWER-positive charge
electrons - CORRECT ANSWER-negative charge
neutrons - CORRECT ANSWER-neutral charge
atomic number - CORRECT ANSWER-number of protons in an atom
mass number - CORRECT ANSWER-total number of protons and neutrons in an atom
atomic weight - CORRECT ANSWER-average mass of an atom
molecules - CORRECT ANSWER-are made of 2 or more atoms linked together; can be of the
same element or different
ions - CORRECT ANSWER-atoms or molecules with an electrical charge
ex: electrons = -1
ex: protons = +1
- when an atom has more total protons than electrons, the charge will be positive (and vice
versa)
electrolytes - CORRECT ANSWER-any substance that gives off or forms ions when dissolved in
water
axial region - CORRECT ANSWER-represents core of the body, includes all structures except the
upper and lower appendages
Intro) QUESTIONS AND
VERIFIED CORRECT
ANSWERS GRADED A+
[LATEST 2026-2027] 100%
GUARANTEED PASS
negative feedback - CORRECT ANSWER-a reaction that causes a decrease in function; essentially
reduces, shuts off, or counterbalances the original stimulus that caused the homeostatic
imbalance
- causes the given variable to change in the opposite direction of the inital change, and brings
the system back to homeostasis
- ex: temp, blood glucose levels, blood volume, pH, composition
positive feedback - CORRECT ANSWER-the response of the effector works to further increase
the change that was caused by the stimulus; may enhance, exaggerate, or amplify the original
stimulus
- ex: childbirth, blood clot formation, menstrual cycle
anatomical position - CORRECT ANSWER-stand erect, arms at the side with palms facing
forward (thumbs pointing away from the body), feet flat on the floor
mattering - CORRECT ANSWER-anything that takes up space and mass
, protons - CORRECT ANSWER-positive charge
electrons - CORRECT ANSWER-negative charge
neutrons - CORRECT ANSWER-neutral charge
atomic number - CORRECT ANSWER-number of protons in an atom
mass number - CORRECT ANSWER-total number of protons and neutrons in an atom
atomic weight - CORRECT ANSWER-average mass of an atom
molecules - CORRECT ANSWER-are made of 2 or more atoms linked together; can be of the
same element or different
ions - CORRECT ANSWER-atoms or molecules with an electrical charge
ex: electrons = -1
ex: protons = +1
- when an atom has more total protons than electrons, the charge will be positive (and vice
versa)
electrolytes - CORRECT ANSWER-any substance that gives off or forms ions when dissolved in
water
axial region - CORRECT ANSWER-represents core of the body, includes all structures except the
upper and lower appendages
