Biology (Science & Mathematics) - November 2007

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What's the most complex organism with a bi-directional digestive system? Are there any?

I'm talking about an animal with a defined digestive tract (i.e., not unicellular) that can ingest food from either end and excrete waste from either end. If such a thing hasn't evolved (which I can't imagine it hasn't, so many other odd things have), would it be workable in a synthetic organism if you make an organism that needs to eat/excrete certain things? If so, what would work best as far as the kinds of things such an organism should eat/excrete?

Just curious. Very curious. About some of the darndest things. ;-)

2007-11-16 06:23:05 · 1 answers · asked by uncleclover 5

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Is Love a word that is used by people unfamiliar with the concepts rising hormone levels?

2007-11-16 04:37:04 · 10 answers · asked by Anonymous

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If you have 100 molecules of glucose, how many ATPs can be yielded?

I'm cramming for an online anatomy class and I have completely forgotten how to do this....if I could at least see the steps necessary to complete this, that would be AWESOME!! thanks sooooo much!!

(it's multiple choice and the possibe answers are:
a. 36
b. 38
c. 3600
d. 3800

2007-11-16 03:33:20 · 5 answers · asked by gymnastics=life 2

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What is the name of the blue dye used when staining cells?

I think it was something cotton blue?

2007-11-16 00:56:58 · 7 answers · asked by Kellyanna 2

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In benign cancers, cells divide rapidly but spread little, forming a mass of cells called a,?

a. lump.
b. tumor.
c. malignancy
d. melanoma

2007-11-16 00:28:36 · 3 answers · asked by BD M 1

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I found a contradiction...Wikipedia say that cows have 46 chromosomes and two science sites say 60, who is....

right?

The two science sites:
http://www.gla.ac.uk/faculties/vet/teaching/CAL/biomolecular/module3.swf (requires flash player) (go to "Types of Abnormalities" button)
http://www.pathlights.com/ce_encyclopedia/Encyclopedia/15sim03.htm (scroll down to "Chromosome Count In Relation To Size")

This is Wikipedia:
Cow 46
http://en.wikipedia.org/wiki/List_of_number_of_chromosomes_of_various_organisms

2007-11-15 19:17:57 · 11 answers · asked by Adyghe Ha'Yapheh-Phiyah 6

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i need some help with work i dont get it?

how do the processes of photosynthesis andd respiration and how they meet the needs of cells, realting these to structures.
i need some help because i dont understand what to do

2007-11-15 17:59:31 · 9 answers · asked by yaaahooooo 3

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What is the difference between hypertonic, isotonic, and hypotonic?

And, which way will water flow if a cell is placed in each of these three solutions?

2007-11-15 16:58:19 · 8 answers · asked by holly f 3

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if people went a few generations without sun light what would be some of the results?

like if humans lived underground for like a few hundred years what would be some of the physical effects or changes over time

2007-11-15 15:11:01 · 3 answers · asked by trustluvlove 1

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Is invertase (sucrase) enzyme specific?

Sucrase will separate both sucrose (sugar) and sucralose (Splenda). Can it do this because the enzyme isn't 100% specific to sucrose, or is it because it can't tell the difference between sugar and Splenda? Thanks!

2007-11-15 14:41:36 · 1 answers · asked by what? 5

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Why do pickels have bumps?

Why is it that pickels have those little bumps on them?

2007-11-15 13:41:19 · 2 answers · asked by Havie 2

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help! i need help in biology?? plz.?

how can i describe the nucleus and it's contents???

2007-11-15 13:40:09 · 13 answers · asked by crazy g 1

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Biology Problem!!! Help!?

Explain why grease on clothing will not come out with cold water.

Thanks in advance!

2007-11-15 13:31:06 · 4 answers · asked by Gabbs 3

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What is the opposite of virulent!?

please help

2007-11-15 13:29:26 · 5 answers · asked by deniseg1993 2

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Which animal is rain forest?

2007-11-15 12:54:00 · 3 answers · asked by Anonymous

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what kind of evidence can you prove that living things are composed of basic units called cells?

2007-11-15 12:51:43 · 1 answers · asked by $$$$$$$$$$$$$ 2

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what are 4 structures/organelles found in plant cells not animal cells?

2007-11-15 12:49:41 · 2 answers · asked by jessica s 1

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Why do leaves contain pigments beside chlorophyll?

2007-11-15 12:45:38 · 2 answers · asked by Anonymous

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Ap Biology question?

Fats digested to fatty acid and glycerol, the solution will become what type of PH? Why??

2007-11-15 12:36:02 · 1 answers · asked by ryan t 1

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what is an artery cell called?

2007-11-15 12:26:50 · 3 answers · asked by ? 2

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what is the reproductive systems of the komodo dragan?

2007-11-15 12:21:09 · 3 answers · asked by 123456789 1

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what is a skin cell called?

2007-11-15 12:03:28 · 5 answers · asked by ? 2

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What counterassertions can be made to Stephen Jay Gould's view that nature is nonmoral in his essay?

Gould's view is that "it just plain happens." What counter assertions can be made based on his essay Nonmoral Nature?

2007-11-15 11:50:23 · 3 answers · asked by Anonymous

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what is another name for tympanic membrane?

i need help with this question badly it's for a science question.

2007-11-15 11:49:48 · 3 answers · asked by Anonymous

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what different atoms make up an amino acid?

2007-11-15 11:38:47 · 4 answers · asked by laxlax14 1

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AP Biology help?

A population has 8 times as many heterozyotes as homozygous recessives. What is the frequency of the recessive gene?

A recessive characteristic appears in 40% of males and 16% of females. What kind of trait is it? Frequency of heterozygous females? heterozygous males? males not showing the characteristic?
*PPPPPlllleeeaaseee! I really need help with them!

2007-11-15 11:24:47 · 2 answers · asked by Anonymous

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