Exam (elaborations)
Final Exam- BIOS 251 Questions with Complete Solutions
- Course
- Institution
Final Exam- BIOS 251 Questions with Complete Solutions
[Show more]
Content preview
Final Exam- BIOS 251 Questions with CompleteSolutions
Components of the homeostatic control loop Correct Answer-receptor, control center,
effector
Negative feedback Correct Answer--works to oppose change
-brings condition back to a set point
Positive feedback Correct Answer--works to enhance change
-brings condition further away from a set point
Tonicity Correct Answer-relates to how the solution influences the shape of body cells
Hypotonic solution Correct Answer-RBC undergoes hemolysis (swelling)
Hypertonic solution Correct Answer-RBC undergoes crenation (shrinking)
Osmosis Correct Answer--concentration of solutes per liter
-water moves from high concentration of water to low concentration of water
, Final Exam- BIOS 251 Questions with Complete
Solutions
Factors that influence diffusion across a cell membrane Correct Answer--steepness of
concentration gradient
-temperature
-mass of diffusing substance
-surface area
-diffusion distance
Passive processes that move substances across the cell membrane Correct Answer--Simple
diffusion
-Facilitated diffusion
Osmosis processes that move substances across the cell membrane Correct Answer--Active
processes
-Active transport
-Vesicular transport
, Final Exam- BIOS 251 Questions with Complete
Solutions
Primary active transport Correct Answer-energy derived from ATP changes the shape of a
transporter protein which pumps a substance across a plasma membrane against its
concentration gradient
Secondary active transport Correct Answer--energy stored (in a hydrogen or sodium
concentration gradient) is used to drive other substances against their own concentration
gradients
-substance is being transported "against its will"
Types of active transport in vesicles Correct Answer--endocytosis
-phagocytosis
-pinocytosis
-exocytosis
-transocytosis
Endocytosis Correct Answer-cell takes up specific ligands that bind to cell surface receptors
into a vesicle
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ExamRoom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now