BIOB10H3 Lecture Notes - Lecture 8: Vacuole, Signal Peptide, Gonad

39 views5 pages

ceruleanweasel185

15 Dec 2011

School

Department

Course

Professor

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

Document Summary

Function: site of photosynthesis: utilizes energy to convert carbon dioxide and water into glucose, in plants, eukaryotic algae, some protists and several prokaryotes. Slide 9: confocal of gfp thylakoid protein. Thylakoid sacs arranged into grana (stacks of. Outer envelope membrane y contain porin molecules large channels y allow very large molecules through. Inner envelope membrane y highly impermeable: requires transporters. Thylakoids internal membrane system y membranous sacs arranged in stacks called grana y membrane has 75:25 protein: lipid ratio y thylakoid sacs have lumen inside y stroma lamellae flattened membrane structures that connect. and can also have thylakoid transfer domain (for thylakoid proteins) If destined for stroma: hsp60 refolds protein and stroma-targeting domain is cleaved by protease y. If destined for thylakoid lumen: stroma-targeting domain is cleaved to reveal thylakoid transfer domain, protein is transported into lumen-bacterial translocon-type machinery. Ribosomes assemble on thylakoid membrane (like rer) and stop trans for sequence return proteins in membrane.

Related Questions

How are proteins imported into the thylakoids of chloroplasts?

fuchsiaotter184

In reference to photosynthesis, explain the consequenceof increasing the chloroplast inner membrane permeability(Not thylakoid membrane) that allows the diffusion of small chargedsubstances. Be specific to the effects it would have on the processof photosynthesis.

amaranthmacaw968

4.) Reactions with positive standard free energy changes ( G^oâ>0) can be made to occur in cells by:

a.Coupling them to the hydrolysis of ATP.

b.Coupling them with exergonic reactions via a common intermediate.

c.Manipulating the concentrations of products and reactants such that G <0.

d.All of the above

6.Glycolysis has to âprimeâ the substrate glucose before it can subsequently extract energy from the pathway. What is the compound it uses to do this?

a.NADH. b. NAD⁺. c. GTP. d. ADP. e. ATP

10.Which of the following statements about chloroplasts is FALSE?

a.The thylakoid membrane is permeable to protons.

b.The thylakoid membrane contains the photosynthetic electron transport components.

c.Protons are pumped from the stroma into the thylakoid space.

d.ATP is synthesized in the stroma.

e.Chloroplasts divide to form new chloroplasts.

12.What is the source of free energy (G) for moving protons out of the mitochondrial matrix against their concentration and electrical gradients

a.ATP

b.The redox reactions of the electron transport chain

c.Glycolysis

d.Creatine phosphate

13.The F₀ base of ATP synthase contains a ring of 12 subunits while the F₁ head has 5 different protein subunits in the ratios 3:3:1:1:1. It takes ____ protons for the rotor to make one complete revolution, or _____ protons to make one ATP

a.12, 4

b.12, 2

c.4, 4

d.6, 2

sangriacricket98

BIOB10H3 Lecture Notes - Lecture 8: Vacuole, Signal Peptide, Gonad

Document Summary

Get access

Related Documents

BIOB10H3 Study Guide - Phagocytosis, Nuclear Dna, Photodissociation

BIOB10H3 Lecture Notes - Lecture 8: P700, Sucrose, Carboxylation

BIOB10H3 Study Guide - Midterm Guide: Thylakoid, Signal Peptide, Intermembrane Space

Related Questions