Membrane transport proteins – Compare and contrast transporters (aka carriers) and pumps. Include at least three features they share and at least three ways in which they differ.
Pump:
-It shift small organic molecules or inorganic ions from one side
of the membrane to the other by CHANGING SHAPE.
-Pumps generate a membrane potential by creating an electrochemical
gradient across the membrane.
-Expenditure of energy.
-Works Against of according to concentration gradient.
Carrier:
-It form tiny HYDROPHILIC PORES across the membrane through which
such substances can pass by DIFFUSION.
-No generation of membrane potential.
-It follow passive pathway so no expenditure of energy.
-Movement of substances according to Concentration gradient.
Membrane transport proteins – Compare and contrast transporters (aka carriers) and pumps. Include at least three...
#4 TICI CU. 3. Compare and contrast types of membrane transport including transport proteins. 4. Distinguish between exergonic/endergonic, anabolic/catabolic reduction/oxidation reactions.
Which of the following statements on membrane transport is NOT correct: A. To transport of solutes in the unfavorable direction across the membrane, pumps couple the process with either ATP hydrolysis, light absorption, electron transport, orother favorable transport process. B. Dissolved gases like O2, CO2, or NO simply diffuse across a membrane bilayer C. Hydrophilic molecules require assistance by membrane proteins to cross the membrane bilayer. D. The rate of transport facilitated by transporters is faster, but less selective for...
4. Glutamine transporters are proteins that, ironically enough, transport glutamine across a membrane. These transporters usually transport sodium along with them. Below is a depiction of the glutamine transport. The binding affinity for glutamine when it's open to the outside is 0.2 mM, while inside it spikes to 5 mM. Na Gln 1 mM 0.4mM Gln 0.7 mM Nat 0.5 mM Which direction would you hypothesize the sodium flow is going in? Why is this sodium transport necessary? When the...
Compare and contrast electron transport and ATP synthesis in mitochondria and chloroplasts. Start with the electron donor and end with the final electron acceptor. Detail the arrangement in the membrane and redox chemistry of the electron transporters, orientation and function of ATP synthase, membrane properties, etc., etc. How are these electron transport systems related to metabolic processes occurring in the mitochondria and chloroplasts?
21. Which property has not been observed for membrane proteins? a. energy storage b. transport of substances into and out of the cell catalysis (enzymatic activity) acting as a receptor c. d. 22. In the fluid mosaic model of membrane structure the proteins are specifically bonded to the lipids b. a. the proteins "float" in the lipid bilayer the proteins are sandwiched between the lipid molecules c. d. the lipids are sandwiched between the protein molecules 23. All steroids contain...
Compare and contrast DNA replication in prokaryotes and eukaryotes. Include three commonalities and three distinctions. Describe the molecular structure of DNA in all organisms. Contrast the differences in DNA structure between prokaryotes and eukaryotes. Compare and contrast DNA and RNA with respect to structure and function. Include three commonalities and three distinctions.
Chapter 5 1. Compare and contrast simple diffusion with facilitated diffusion being sure to mention direction of movement, source of energy, and how movement across the membrane occurs. 2. Compare and contrast the terms active transport with facilitated diffusion addressing the same issues as above. 3. Draw a diagram of a membrane receptor and include the following details. Include a depiction of the plasma membrane with which it is associated; label the locations of the extracellular space, the cytoplasm, and...
1. Explain how the amphipathic nature of membrane proteins helps form the three-dimensional structure of a single-pass protein like a receptor, versus a multipass protein like a channel. 2. Describe the different ways by which cells confine proteins or restrict protein movement to a specific region of the plasma membrane
Compare and contrast glycoproteins and glycation products; include at least one similarity and one difference. Give an example of each.
Compare and contrast the American and Norwegian incarceration systems. Distinguish at least three characteristics that are similar as well as distinct. Identify what is being done in each system to minimize the negative impacts on individuals lives, the community, and the larger issue of incarceration and its impact on society. Which characteristics seem to be the most effective.