Biology 1002B Lecture Notes - Lecture 5: Carbon Fixation, Cellular Respiration, Atp Synthase

10 views3 pages

indigotortoise482

3 Feb 2020

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Lecture 10: integrated metabolism: atp synthase is not a pore, it only lets protons through when adp and pi are around, measuring the change of oxygen (rate of respiration) Co2 and o2 production and consumption in respiration versus photosynthesis. How does one determine the rate of respiration: rate of respiration : rate at which mitochondria are releasing co2, 10 mirco mol co2 released / cell / min. Zero net gas exchange: the rate at which the mitochondria are releasing co2 and the calvin cycle is fixing co2 is exactly equal, a plant cannot grow under the light compensation point. When you add the substrate it changes to purple: enzyme kinetic curve: velocity vs [s] What explains the shape of velocity versus [s] curve for an enzyme. Definition of a competitive inhibitor: a competitive inhibitor competes for the active site, ex. C4 photosynthesis: oxygen can be a competitive inhibitor cause it competes with co2 to bind to rubisco.

Related Questions

1.Bacteriorhodopsin is a protein that has 7 alpha helices embedded in the cell membrane. As such, how many start-transfer and stop-transfer sequences would it need?

7 start transfer sequences, 6 stop transfer sequences

7 of each, in alternating fashion

4 start transfer sequences and 3 stop transfer sequences

7 start transfer sequences

2. The role of GTP hydrolysis by the Signal Recognition Particle during cotranslational translocation to the ER is

to release the SRP after docking to the translocon so translation can resume.

to open the gate/pore of the translocon into the ER.

to arrest translation so that synthesis does not finish before the peptide is delivered to the translocon.

to allow binding to the ribosome.

3. The cisternal maturation model is just one model that describes how objects might move through the Golgi. Some of the statements below describing the cisternal maturation model are correct and some are incorrect. Select all the incorrect descriptions.

There's no need for retrograde movement

Vesicles bud off from the Trans Golgi Network toward the plasma membrane

Vesicular tubules move materials from the cis to medial Golgi networks.

There are no vesicles moving in the anterograde direction

4. Select all statements that are correct concerning electron transport and ATP synthesis during photosynthesis in chloroplasts.

Each photosystem (I and II) pump protons.

Protons are pumped into the lumen of the thylakoid.

The bulb of the synthase projects into the stroma

Photosystem I is reduced directly by Photosystem II

5. Select all that are true about ATP synthesis with an F_oF₁ synthase complex.

Each ADP+Pi is transferred from one beta subunit in Open conformation to a second beta subunit in Loose conformation and finally to the 3rd beta subunit in the T conformation

As the gamma subunit rotates to each beta subunit, it forces them to the open state.

As the gamma subunit rotates to a particular beta subunit, the unit before it changes conformation to Tight and the one ahead of it changes to Loose

As the gamma subunit rotates to a particular beta subunit, the unit before it changes conformation to Loose and the one ahead of it changes to Tight

All 3 beta subunits are always in a different conformation (open, loose, or tight)

6. The number of ATPs per NADH generated by the electron transport system is higher than the number generated per FADH2 because __________.

		electrons from FADH₂ are not oxidized all the way to water
		NADH is converted to NAD⁺, which increases the charge gradient for ATP synthesis
		FADH₂ has a lower (less negative) redox potential than NADH does
		FADH₂ has a higher (more negative) redox potential than NADH does

Biology 1002B Lecture Notes - Lecture 5: Carbon Fixation, Cellular Respiration, Atp Synthase

Document Summary

Get access

Related Documents

Biology 1002B Lecture Notes - Lecture 8: Electron Acceptor, Carbon Fixation, Glyceraldehyde 3-Phosphate

Biology 1002B Lecture Notes - Lecture 5: Carbon Fixation, Electrochemical Gradient, Oxygen Evolution

Biology 1002B Lecture Notes - Lecture 10: Glucose Transporter, Carbon Fixation, Light-Independent Reactions

Related Questions