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Review Unit 3 and 4 Figure 6.8a Review Unit 3 and 4 Figure 6.8a

Review Unit 3 and 4 Figure 6.8a - PowerPoint Presentation

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Review Unit 3 and 4 Figure 6.8a - PPT Presentation

ENDOPLASMIC RETICULUM ER Rough ER Smooth ER Nuclear envelope Nucleolus Chromatin Plasma membrane Ribosomes Golgi apparatus Lysosome Mitochondrion Peroxisome Microvilli Microtubules ID: 724254

potential water figure solution water potential solution figure atp sucrose respiration cell transport bars cellular beaker photosynthesis chain light

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Slide1

Review Unit 3 and 4Slide2

Figure 6.8a

ENDOPLASMIC RETICULUM (ER)

Rough

ER

Smooth

ER

Nuclear

envelope

Nucleolus

Chromatin

Plasma

membrane

Ribosomes

Golgi apparatus

Lysosome

Mitochondrion

Peroxisome

Microvilli

Microtubules

Intermediate filaments

Microfilaments

Centrosome

CYTOSKELETON:

Flagellum

NUCLEUSSlide3

NUCLEUS

Nuclear

envelope

Nucleolus

Chromatin

Golgi

apparatus

Mitochondrion

Peroxisome

Plasma membrane

Cell wall

Wall of adjacent cell

Plasmodesmata

Chloroplast

Microtubules

Intermediate

filaments

Microfilaments

CYTOSKELETON

Central vacuole

Ribosomes

Smooth

endoplasmic

reticulum

Rough

endoplasmic

reticulum

Figure 6.8cSlide4

Figure 6.UN01a

Nucleus

(ER)Slide5

Figure 6.UN01b

(Nuclear

envelope)Slide6

Figure 6.UN01cSlide7

Endosymbiont Theory

Mitochondria and chloroplasts have their own DNA in circular loops like prokaryotes

Both have a double membrane (inner from original prokaryote and outer from cell

Both are similar in size and structure to bacteriaBoth have ribosomes similar in structure and size to prokaryotesSlide8

Phospholipid

bilayer - What molecules can get through directly? Slide9

Figure 7.19

Passive transport

Active transport

Diffusion

Facilitated diffusion

ATPSlide10

Managing water balance

Cell survival depends on balancing water uptake & loss

freshwater

balanced

saltwaterSlide11

Figure 7.UN03

0.03

M

sucrose

0.02

M glucose

“Cell”

“Environment”

0.01

M sucrose0.01 M glucose0.01

M fructoseSlide12

2005-2006

Cell

(compared to beaker)

 hypertonic or hypotonic

Beaker

(compared to cell)  hypertonic or hypotonicWhich way does the water flow?  in or out of cell

.05 M

.03 M

Osmosis… Slide13

Water Potential

Water Potential =

Y = Ys +

YpYs = -iCRTi = The number of particles the molecule will make in water; for NaCl this would be 2; for sucrose or glucose, this number is 1 C = Molar concentration R = Pressure constant = 0.0831 liter bar/mole K T = Temperature in degrees Kelvin = 273 + °C of solution Click here to see an entire page of water potential problems!Slide14

Water

Potential and Solution Potential

Sample Problem

The molar concentration of a sugar solution in an open beaker has been determined to be 0.3M. Calculate the solute potential at 27 degrees Celsius. Round your answer to the nearest tenths. Slide15

Q3

Solute potential= –

iCRT

i

= 1C= 0.3R = Pressure constant = 0.0831T= 27 +273=300KSolute concentration= -7.5

If a baby carrot with a water potential of -5.2 bars is put into this solution, what will happen? Why?Slide16

Answer…..

If a baby carrot with a water potential of -5.2 bars is put into this solution, what will happen? Why

?

Water moves from areas of higher water potential to areas of lower water potential (towards the more negative number!)So water moves……..out of the carrot!!! The carrot is hypotonic to the solutionSlide17

Water Potential – another example

The value for water potential in root tissue was found to be -3.3 bars. If you take the root tissue and place it in a .1 M solution of sucrose at 20 C in an open beaker, what is the water potential of the solution and in which direction will the net flow of water be? (answer is on the next slide) Slide18

Water Potential

The value for water potential in root tissue was found to be -3.3 bars. If you take the root tissue and place it in a .1 M solution of sucrose at 20 C in an open beaker, what is the water potential of the solution and in which direction will the net flow of water be?

Roots = -3.3 bars

.1M sucrose solution = -2.4 bars (calculate this!)Water moves from the sucrose solution into the roots (from high water potential to low water potential!)Slide19

Figure 9.2

Light

energy

ECOSYSTEM

Photosynthesis

in chloroplasts

Cellular respiration

in mitochondria

CO

2  H2O

 O2

Organicmolecules

ATP powers

most cellular work

ATP

Heat

energySlide20

Cellular respiration –

Watch this VideoSlide21

Cellular

respiration –

2 ATP

2 ATP

~36 ATP

+

+

~40 ATPSlide22

Electron Transport Chain (oxygen as an electron acceptor and the generation of ATP)!!!!Slide23

Pyruvate is a branching point

Pyruvate

O

2

O

2

mitochondria

Krebs cycle

aerobic respiration

fermentation

anaerobic

respirationSlide24

Photosynthesis –

WATCH THIS VIDEO (7 minutes)Slide25
Slide26

Light: absorption spectra

Photosynthesis gets energy by

absorbing

wavelengths of lightchlorophyll

a absorbs best in red & blue wavelengths & least in greenaccessory pigments with different structures absorb light of different wavelengthschlorophyll b, carotenoids, xanthophylls

Why are

plants green?Slide27

Figure 10.UN02

Primary

acceptor

Primary

acceptor

Cytochrome

complex

NADP

reductase

Photosystem II

Photosystem I

ATP

Pq

Pc

Fd

NADP

+ H

NADPH

H

2

O

O

2

Electron transport

chain

Electron transport

chainSlide28

Light

Light

Reactions:

Photosystem

II

Electron transport chain

Photosystem IElectron transport chain

NADP

ADP

+ P i

RuBPATP

NADPH

3-Phosphoglycerate

Calvin

Cycle

G3P

Starch

(storage)

Sucrose (export)

Chloroplast

H

2

O

CO

2

O

2

Figure 10.22Slide29

Watch Bozeman Biology Photosynthesis and Respiration

Cellular Respiration Video

Photosynthesis Video