• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

AS BIOLOGY P-33

Moi

Messages
223
Reaction score
80
Points
38
guys where is the phloem and xylem in the vascular bundle (outwards/inwards) In leaves-roots-stems?
and can u show me how do you draw it! thx
 
Messages
325
Reaction score
215
Points
53
guys where is the phloem and xylem in the vascular bundle (outwards/inwards) In leaves-roots-stems?
and can u show me how do you draw it! thx
The xylem is always to the inside. Check google images for drawings.
 
Messages
53
Reaction score
51
Points
28
21012zc.jpg

42 EPGU - 10 SMU
1 EPGU - x SMU
42x - 10
x - 10/42 = 0.238 SMU

1 SMU - 0.01 mm
0.238 SMU - x mm
x - 0.01 x 0.238 = 0.00238 mm

Therefore, step 1: 10 divided by 42 = 0.238 x 0.01 = 0.00238 mm.

Step 2: 0.00238 multiplied by 1000 = 2.38 micrometres.
Omgggg thankyouuuu so much :D(y):D
 
Messages
53
Reaction score
51
Points
28
21012zc.jpg

42 EPGU - 10 SMU
1 EPGU - x SMU
42x - 10
x - 10/42 = 0.238 SMU

1 SMU - 0.01 mm
0.238 SMU - x mm
x - 0.01 x 0.238 = 0.00238 mm

Therefore, step 1: 10 divided by 42 = 0.238 x 0.01 = 0.00238 mm.

Step 2: 0.00238 multiplied by 1000 = 2.38 micrometres.
b (ii) part please :)
 
Messages
34
Reaction score
9
Points
18
in w12 q31, how do we do the serial dilution because they ask us to make a volume of 20 but when we transfer from one beaket to the other the volume left is 10???
 
Messages
807
Reaction score
696
Points
103
w12 qp 31

Ok listen we did this type of dilution in our mock at our school its like u take 10cm3 of solution from that beaker and then u add to another beaker then add 10cm3 of water then from this beaker which u just added solution to u take a further 10cm3 and add to another beaker...and so on
Hence you will have a serial dilution in which conc decreases by half each time.. u get me?
 
Messages
34
Reaction score
9
Points
18
Ok listen we did this type of dilution in our mock at our school its like u take 10cm3 of solution from that beaker and then u add to another beaker then add 10cm3 of water then from this beaker which u just added solution to u take a further 10cm3 and add to another beaker...and so on
Hence you will have a serial dilution in which conc decreases by half each time.. u get me?
yup see i get this part. but they have asked to make up a total volume of 20 for each conc but when you transfer it from one beaker to the other wouldnt the volume decrease by 10?
 

DOS

Messages
70
Reaction score
17
Points
18
Top