1. What biochemical feature of a phospholipid molecule allows phospholipids to spontaneously form closed compartments when...

70.2K

Verified Solution

Question

Biology

1. What biochemical feature of a phospholipid molecule allowsphospholipids to spontaneously form closed compartments when placedin an aqueous solution?
a) they are amphipathic
b) they are charged
c) they are spherical
d) they have a single fatty acid tail
2. Other than phospholipids, what molecule do cells use to alterthe fluidity of biological membranes?
3. What distinguishes active transport from passivetransport?
a) active transport can utilize channel proteins
b) passive transport does not utilize carrier/transporterproteins
c) active transport requires the input of energy
d) active transport only occurs at the plasma membrane
4. In the case of active transport, the Na+/K+ pump undergoes asequence of conformational changes that allows the movement of Na+and K+ across a membrane against their electrochemical gradients,while in the case of ER protein import SRP undergoes a sequence ofconformational changes to allow the signal sequence to interactwith the translocation pore. What drives these conformationalchanges?
a) hydrolysis of a high energy phosphate bond
b) binding of a solute or protein
c) both
d) neither
5. Is protein import into the ER co-transcriptional, orco-translational?

Answer & Explanation Solved by verified expert

3.8 Ratings (426 Votes)

1 The correct answer is a they are amphipathic Phospholipid molecules have hydrophobic and hydrophilic regions when these are placed in a aqueous solution hydrophobic regions buried inside and See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member