Bio 141 Notes (3/13/14) Flashcards Preview

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Flashcards in Bio 141 Notes (3/13/14) Deck (28):
1

Light Reactions

plants do not absorb green
generate energy to pass to the Calvin cycle

2

Calvin Cycle

carbon fixation

3

Light captures via ?

photosystem

4

What is important to photosynthesis

membranes

5

Photosystems are made of...

Proteins and Pigments

6

excited eletrons pass through an ____________ that sets up a proton gradient

electron support chain

7

An electron is excited again in Photosystem __ and then used to make _______

1
NADPH

8

What picks up the electron

NADP+

9

what is the result of picking up electrons

NADPH

10

Photosystems II

P680
water coming in and splitting

11

Photosystem I

P700
start with electrons
ends with electrons being picked up by NADP+

12

Non-Cyclic Electron Transport

savings- water
H2O - O2

13

Cyclic Electron Transport

can back ATP
allows continuous generation of ATP
goes back to electron transport chain

14

Calvin cycle requires ___ more ATP than ____

1.5x
NADPH

15

Calvin Cycle

once called 'Dark reactions'
light independent
takes place in stroma (open chloroplast interior)
using energy from light reactions - incorporate carbon from CO2 into sugar
energy transferred to carbon-containing molecules
- phosphorylation by ATP and reduction by NADPH
every 'turn', two 3-C molecules exit and sic 1-C molecules enter

16

Carbon Fixation

take carbon from the air and put it into a biologically useful form

17

Rearrangement 1

6* 5-C + 6* 1-C -> 12* 3-C

18

Rearrangement 2

10*3-C -> 6*5-C

19

Rearrangements involve going to/ from...

5-C ribulose molecules

20

Reasons for cell division

reproduction, growth, and regeneration

21

Sexual Production

2 Parents

22

Asexual Production

1 Parent
individual, single celled organisms
plants, bacteria
ex. aphids, occasionally lizards

23

Sexual Life Cycles

sexual reproduction involves halving and doubling the chromosome number

24

Diploid

2n
2 copies of genetic information

25

Meiosis

Halving

26

Chromosome number indicated by...

(n)

27

Haploid

one copy of each chromosome

28

How many diploids/haploids do humans have?

Diploids 2n - 46
Haploids n - 23