Search found 11 matches

by taata
Wed Nov 23, 2005 8:38 pm
Forum: Cell Biology
Topic: Staining Theory
Replies: 1
Views: 2067

Staining Theory

i need help Section rehydration Wax must be removed and the section rehydrated before staining Wax usually removed by soaking in xylene. Rehydration is in series of alcohol baths from 100%, 95%, 70% etc to distilled water. ‘Taking back to water’ i did understand waht is rehydration is but not what i...
by taata
Sun Jul 31, 2005 9:46 pm
Forum: Botany Discussion
Topic: carnivorous plants
Replies: 6
Views: 7801

carnivorous plants

can any body help me
i do know what is carnivorous plant and the enviroment they like to live in
but i do not know
the mechanisms that responsible for triggering the closure of leaves of carnivorous plants.
if any of you may know please reply me back
thank you
by taata
Fri Jul 08, 2005 10:10 pm
Forum: Cell Biology
Topic: cellular membrane
Replies: 15
Views: 11105

cellular membrane

How thick is a typical cellular membrane? Express in picometres (pm),
nanometres (nm), micrometres (μm) and millemetres (mm).
by taata
Fri Jul 08, 2005 9:44 pm
Forum: Genetics
Topic: genetic
Replies: 13
Views: 8640

please help it is not home work

i am trying to revise exam but have not clue about genetic
this qouesion was from exam papers from last year that i am using as revision
this can of example could came in the exame please
help any one
by taata
Fri Jul 08, 2005 9:16 pm
Forum: Microbiology
Topic: experiment
Replies: 1
Views: 3112

experiment

Describe the experiments of Beadle and Tatum with Neurospora crassa.

:cry: :shock: please help
by taata
Fri Jul 08, 2005 9:12 pm
Forum: Microbiology
Topic: bacteriophages
Replies: 5
Views: 5779

bacteriophages

Draw fully labelled diagram, and write some explanatory notes, explaining how you would quantify the number of bacteriophages in an unknown suspension. :cry:
by taata
Fri Jul 08, 2005 12:39 am
Forum: Genetics
Topic: genetic code
Replies: 3
Views: 8331

genetic code

The genetic code is degenerate. What does this term mean?
Give an example of this feature of the genetic code.
:( please help soon
by taata
Fri Jul 08, 2005 12:04 am
Forum: Cell Biology
Topic: cell biology
Replies: 2
Views: 3352

cell biology

Give figures in μm and μm3 for the diameters and volumes (calculated yourself from the diameters you give) respectively of a typical named eukaryotic cell and for particularly large and small named variants. [6 marks] Category of eukaryotic cell Diameter (μm) Volume (μm3 ) A typi...
by taata
Thu Jul 07, 2005 11:59 pm
Forum: Genetics
Topic: genetic
Replies: 13
Views: 8640

genetic

In a cross between a black guinea pig and a white guinea pig, all the offspring were black. The F2 generation was made up of 18 black and 5 white guinea pigs. a) What does this information tell you about coat colour inheritance in guinea pigs? b) Explain the numbers of black and white guinea pigs in...
by taata
Thu Jul 07, 2005 11:56 pm
Forum: Genetics
Topic: genetic
Replies: 1
Views: 3909

genetic

The wild type (normal) fruit fly, Drosophila melanogaster, has straight wings and long bristles. Mutants have been isolated that have curled wings or short bristles. Consider the five crosses given in the table below. Cross Number of progeny Straight wings, long bristles Straight wings, short bristl...
by taata
Wed Apr 27, 2005 1:10 am
Forum: Microbiology
Topic: enzyme
Replies: 1
Views: 3808

enzyme

please can any one help me to answer these questions for to as i have to hand in tommorrow 1. Define Km: 2. Define Vmax: 3. a) Which type of plot is best for determining the type of enzyme inhibition? b. Draw a sketch of the expected graph for each of the following three types of inhibition. Discuss...