Exam (elaborations)
BIO 181 NAU- Exam 1 with Verified Solutions
- Course
- Institution
BIO 181 NAU- Exam 1 with Verified Solutions
[Show more]
Content preview
BIO 181 NAU- Exam 1 with VerifiedSolutions
Mitochondria Correct Ans-In plant cells. Supply ATP to cells. Has two membranes
Chloroplasts Correct Ans-Most plants and algal cells have these. Have three membranes.
Innermost membranes contains flattened sacs called thylakoids, thylakoids are arranged in
stacks called grana, surrounding the thylakoids is the stroma. Contain own DNA and
manufacture their own ribosomes
Thylakoids Correct Ans-innermost membrane of the chloroplast and contains flattened sacs
Grana Correct Ans-Thylakoids arranged in stacks
Stroma Correct Ans-Surrounds the thylakoids
Endosymbiosis theory Correct Ans-Mitochondria and chloroplasts were on their own until a
cell came and engulfed it.
Phospholipids Correct Ans-Consist of glycerol linked to a phosphate group bonded to a
charged or polar molecule with two hydrocarbon chains. Fatty acids in bacteria and eukarya.
Form cell membranes
Rate of diffusion Correct Ans-Size- small molecules diffuse faster
Polarity- Nonpolar diffuse faster
Charge- noncharged diffuse faster
Transmembrane gradient Correct Ans-Concentration of a solute is higher on one side of a
membrane than the other
, Ion electrochemical gradient Correct Ans-Both an electrical gradient and chemical gradient
Simple diffusion Correct Ans-High to low
Facilitated diffusion Correct Ans-High to low with the help of a transport protein
Active transport Correct Ans-Low to high, required ATP
Passive transport Correct Ans-When substances diffuse across a membrane without an
outside energy source.
Osmosis Correct Ans-water moves low to high concentration ALWAYS
Hypertonic Correct Ans-the solution has a higher concentration of slute than the other side
of the membrane
Hypotonic Correct Ans-Solution has a lower conenctration of solute than the other side
Isotonic Correct Ans-The solution has an equal concentration of solute.
Osmoregulation Correct Ans-The control of water balance within a cell or organism
Osmosis in a HYPERTONIC solution Correct Ans-Water will move out of the cell, cell will
shrink.
Osmosis in a HYPOTONIC solution Correct Ans-Water will move into the cell, cell will expand.
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 $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
71498 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now