Search found 198 matches

by plasmodesmata11
Wed Oct 31, 2012 3:05 am
Forum: Genetics
Topic: mitochondrial DNA
Replies: 3
Views: 3146

It's also passed down maternally, so it has many uses in that aspect
by plasmodesmata11
Wed Oct 31, 2012 3:01 am
Forum: Botany Discussion
Topic: Glucose concentration in plants
Replies: 2
Views: 2902

maybe you could use fehling's solution and measure color change using a spectrophotometer? There may or may not be conversions for the measurement you get; you'd have to look it up. Then you could look up the ratio of glucose to monosaccharides for the plant you're using, and then from those two pie...
by plasmodesmata11
Wed Oct 31, 2012 2:52 am
Forum: Botany Discussion
Topic: Lemna minor
Replies: 1
Views: 2550

may not be the desired answer, but duckweed is the smallest flowering plant
by plasmodesmata11
Wed Oct 31, 2012 2:23 am
Forum: General Discussion
Topic: Why are genes regulated?
Replies: 2
Views: 1864

Look up lac and trp operons. they are both fine examples of negative and positive controls, respectively.
However, to answer your question in short... do you think it would be prudent for a bacterium to produce an enzyme for a sugar that it isn't ingesting?
by plasmodesmata11
Sat Jun 16, 2012 2:33 am
Forum: Evolution
Topic: Evolution of life histories
Replies: 4
Views: 4018

what are the advantages of each? for example, look up "r-selected organisms" and "k-selected organisms." Each of these have distinct trade offs involving energy and success of passing on genes.
by plasmodesmata11
Fri Jun 15, 2012 5:53 am
Forum: Zoology Discussion
Topic: Mode of nutrition of spider and starfish
Replies: 5
Views: 10870

Well said. Saprophytic in this context could be rather misleading.
by plasmodesmata11
Fri Jun 15, 2012 5:27 am
Forum: Genetics
Topic: Which Is Genetically Worse?
Replies: 2
Views: 2422

he's got it, and this is a page for the coefficient of relation. It has the equation for relatedness, for future reference if you need it. and way to be thorough in trumping your roommate.
http://en.wikipedia.org/wiki/Coefficien ... lationship
by plasmodesmata11
Fri Jun 15, 2012 1:12 am
Forum: Zoology Discussion
Topic: Mode of nutrition of spider and starfish
Replies: 5
Views: 10870

why would you say the spider is saprophytic?
by plasmodesmata11
Tue Jun 05, 2012 8:17 pm
Forum: Evolution
Topic: Why is knowledge on phylogeny important
Replies: 4
Views: 14181

seems like an interesting and rather specific course, but I can speculate that the phylogeny of insect pollinators is important because understanding their evolution and ancestral species could give insight into the origin of relations that the pollinators share with plants. Some insects and flowers...
by plasmodesmata11
Wed May 30, 2012 2:13 am
Forum: Cell Biology
Topic: Free-flowing cells and those that are stuck together?
Replies: 2
Views: 3633

http://en.wikipedia.org/wiki/Extracellular_matrix
That link talks about the extracellular matrix... hopefully it will help you answer your questions!
by plasmodesmata11
Wed May 23, 2012 3:40 am
Forum: Genetics
Topic: Genetic drift
Replies: 2
Views: 5406

Re: Genetic drift

I got this from the genetic drift wikipedia page, but i kinda like it, especially the last bit: The process of genetic drift can be illustrated using 20 marbles in a jar to represent 20 organisms in a population.[4] Consider this jar of marbles as the starting population. Half of the marbles in the ...
by plasmodesmata11
Tue May 22, 2012 1:06 am
Forum: Molecular Biology
Topic: what is DNA & RNA?
Replies: 9
Views: 8019

I suppose this is also nice in showing function and composition:
http://www.slideshare.net/AngellicaSter ... na-7353343