Search found 198 matches

by plasmodesmata11
Thu Jun 03, 2010 2:47 am
Forum: Molecular Biology
Topic: Glucose and it's function?
Replies: 2
Views: 24632

glucose can be used immediately for short term energy or it can be stored as glycogen for later use. and yeah, hormones like insulin and glucagon control sugar usage and fat usage. look up those for help. glucose is very important for many activities in the body.
by plasmodesmata11
Tue May 25, 2010 11:33 pm
Forum: Evolution
Topic: Common ancestor question
Replies: 5
Views: 12524

I guess it would be a species. First, the definition of what constitutes a species is debatable. There would be an individual from which it would stem, but there would be a need for a group, because the mutations would need to accumulate over time in that population of species. It is improabable tha...
by plasmodesmata11
Tue May 25, 2010 11:12 pm
Forum: General Discussion
Topic: Origination of complicated (animal) cell?
Replies: 1
Views: 1294

so you're familiar with the endosymbiont theory? try looking up choanoflagellates; they are some of the first eukaryotic cells working together to form a "team", or organism.
by plasmodesmata11
Tue May 25, 2010 1:55 am
Forum: General Discussion
Topic: Biology HW HELP?
Replies: 3
Views: 8935

you're gonna get killed for this... can't you look it up? or use a textbook?
9. is (C)
by plasmodesmata11
Tue May 25, 2010 1:48 am
Forum: Human Biology
Topic: Myelinated neuron
Replies: 1
Views: 2799

The gates are concentrated at the nodes of ranvier. it's called saltatory conduction.
here: http://en.wikipedia.org/wiki/Saltatory_conduction
by plasmodesmata11
Sun May 23, 2010 2:05 am
Forum: Human Biology
Topic: Human Chromosome Number and Mitosis question.
Replies: 1
Views: 3979

would you really want to see over 30 chromatids squished into one cell in a diagram? it's merely for aesthetics. it'd be hard to tell otherwise.
by plasmodesmata11
Sun May 23, 2010 2:01 am
Forum: Evolution
Topic: How would nonprimate people's lifespans differ from humans'?
Replies: 8
Views: 7331

this would be assuming an improbable instance of convergent evolution. due to the incredibly hypothetical nature of this occurence, i'd say you have the freedom to do what you like with it. an organism's life span is usually based around its reproduction specifics. I'd say make them about the same. ...
by plasmodesmata11
Sun May 23, 2010 1:52 am
Forum: Cell Biology
Topic: Do pseudounipolar neurons have one axon and one dendrite?
Replies: 2
Views: 8363

well, it says that the axon and dendrite are structurally and functionally the same save for the fact that, apparently, dendrites carry impulses towards the soma, whereas axons carry them away. it's a bit picky, but i guess wiki is right.
by plasmodesmata11
Sun May 23, 2010 1:42 am
Forum: General Discussion
Topic: Thoughts on genetically modified organisms/crops
Replies: 1
Views: 2110

well, all these ask what YOU think. but they are important because the goal is to bring out the best qualities in crops. in organisms, they also are supposed to bring out the best qualities, perhaps controlling ratios of different muscle types, etc. However, it is true that people are moving further...
by plasmodesmata11
Fri May 21, 2010 12:58 am
Forum: Evolution
Topic: Selective Pressures reducing population diversity
Replies: 7
Views: 12068

I don't know if this is what you're looking for exactly, but disruptive selection can give way to more than one regular phenotype.
by plasmodesmata11
Mon May 17, 2010 7:17 pm
Forum: Cell Biology
Topic: Need some help
Replies: 3
Views: 1852

perhaps describe how they illicit an immune response?