Exam (elaborations)
BIO 348 EXAM 1 Questions with Correct Answer2.
- Course
- Institution
BIO 348 EXAM 1 Questions with Correct Answer2.
[Show more]
Content preview
BIO 348 EXAM 1 Questions with Correct AnswersAnatomy Correct Answer-studies the structure of the different parts of
the body and their interrelationship at different levels of organization
Physiology Correct Answer-studies how diverse and indispensable body
functions are performed by the interaction of different body structures
Boundary organs Correct Answer-Internal & External environment must
remain distinct.
Boundary organs control extracellular fluid composition.
They exchange materials into and out of the body.
(digestive, urinary, reproductive, respiratory systems)
Living things Correct Answer-•composed of a single cell or a group of
cells
•AT LEAST physical and chemical machines
•respond to short term changes in their environment
•grow and reproduce
•adapt to long term changes in their environment through natural
selection
Homeostasis Correct Answer-A tendency to maintain a balanced or
constant internal state; the regulation of any aspect of body chemistry,
such as blood glucose, around a particular level
,Intracellular fluid (ICF) Correct Answer-fluid within cells (67% of fluid
in body)
Extracellular fluid Correct Answer-fluid outside cells
intercellular fluid=tissue fluid=interstitial fluid
plasma=fluid portion of blood, part of ECF
(33%)
Separation of fluid compartments Correct Answer-ICF and ECF
homeostasis of body fluids
composition of fluid changes as substances move between compartments
-small nutrients, oxygen, ions and wastes move in both directions across
capillary walls
Components of a feedback loop Correct Answer-receptor:
-monitors a controlled condition
control center:
-determines next action
effector:
-receives directions from the control center
-produces a response that changes the controlled condition
Negative feedback Correct Answer-More common
, A primary mechanism of homeostasis, whereby a change in a
physiological variable that is being monitored triggers a response that
counteracts the initial fluctuation.
(i.e. regulation of body temp, blood pressure)
Positive feedback Correct Answer-Feedback that tends to magnify a
process or increase its output.
(i.e. childbirth, formation of platelet plug)
Plasma membrane Correct Answer-•Extra and intracellular
compartments
•Control communication and transport
•Preserve different composition
Functions of membrane proteins Correct Answer-formation of channel
-passage to allow specific substances to pass through
transporter proteins
-bind to a specific substance, change their shape & move it across
membrane
receptor proteins
-cellular recognition site: bind to substance
simple diffusion Correct Answer-*passive transport*
simple diffusion of fat-soluble molecules through the phospholipid
bilayer down their concentration gradient
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 cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now