BIOS 251 Final Questions and Correct Answers
| Graded A+ | Latest Update 2026/2027 | A+
Pass!!
Components of the homeostatic control loop
🗸🗸🗸: receptor, control center, effector
Negative feedback
🗸🗸🗸: -works to oppose change
-brings condition back to a set point
Positive feedback
🗸🗸🗸: -works to enhance change
-brings condition further away from a set point
Osmosis
🗸🗸🗸: -concentration of solutes per liter
-water moves from high concentration of water to low concentration of water
Factors that influence diffusion across a cell membrane
1|Page
,🗸🗸🗸: -steepness of concentration gradient
-temperature
-mass of diffusing substance
-surface area
-diffusion distance
Hypotonic solution
🗸🗸🗸: RBC undergoes hemolysis (swelling)
Passive processes that move substances across the cell membrane
🗸🗸🗸: -Simple diffusion
-Facilitated diffusion
Tonicity
🗸🗸🗸: relates to how the solution influences the shape of body cells
Hypertonic solution
🗸🗸🗸: RBC undergoes crenation (shrinking)
2|Page
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| Graded A+ | Latest Update 2026/2027 | A+
Pass!!
Components of the homeostatic control loop
🗸🗸🗸: receptor, control center, effector
Negative feedback
🗸🗸🗸: -works to oppose change
-brings condition back to a set point
Positive feedback
🗸🗸🗸: -works to enhance change
-brings condition further away from a set point
Osmosis
🗸🗸🗸: -concentration of solutes per liter
-water moves from high concentration of water to low concentration of water
Factors that influence diffusion across a cell membrane
1|Page
,🗸🗸🗸: -steepness of concentration gradient
-temperature
-mass of diffusing substance
-surface area
-diffusion distance
Hypotonic solution
🗸🗸🗸: RBC undergoes hemolysis (swelling)
Passive processes that move substances across the cell membrane
🗸🗸🗸: -Simple diffusion
-Facilitated diffusion
Tonicity
🗸🗸🗸: relates to how the solution influences the shape of body cells
Hypertonic solution
🗸🗸🗸: RBC undergoes crenation (shrinking)
2|Page
, Thank you for Purchasing this exam
Study Guide. We provide high-quality
academic materials to help students
excel in exams. Our other Services
include but not limited to: academic
research, University & College
assignments writing, essay writing,
Online Classes, and research
projects. Our services are reliable,
affordable, and plagiarism-free. All
the Best in your Exam. For more
information; Contact us at:
or
0R
+254 741484450
3|Page
