Biology - October 2007

2007-10-21 05:36:35 · 2 answers · asked by Anonymous

2007-10-21 05:34:24 · 4 answers · asked by Mercedes16_90!! 1

how do green algae differ from the red algae and in what ways are they the same
please answer the question dont give me the website

2007-10-21 05:34:05 · 1 answers · asked by star baller 360 5

If all saprobic fungi (decomposers) in an environment were to suddenly die, which group of organisms should benefit as a whole?

A. prokaryotes
B. mutualistic fungi

C. animals

D. plants

E. protists

I have no idea about this one and my book and wikipedia haven't been helpful

2007-10-21 05:25:11 · 2 answers · asked by Anonymous

Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?

A. dinoflagellates
B. red algae
C. cyanobacteria
D. diatoms
E. autotrophic euglenids


I'm stuck between red algae and cyanobacteria. Please help

2007-10-21 05:14:52 · 3 answers · asked by Anonymous

Which of the following statements concerning living phytoplanktonic organisms are true?
1. They are important members of communities surrounding deep-sea hydrothermal vents.
2. They are important primary producers in most aquatic food webs.
3. They are important in maintaining oxygen in Earth's seas and atmosphere.
4. They are most often found growing in the sediments of seas and oceans.
5. They can be so concentrated that they affect the color of seawater.

A. 2, 3, and 5
B. 1 and 4
C. 2, 3, and 4
D. 1, 2, and 4
E. 3, 4, and 5


I know choice 5 is true so now I'm stuck between A and E. Please help.

2007-10-21 04:55:24 · 2 answers · asked by Anonymous

2007-10-21 04:52:04 · 17 answers · asked by lil1 2

2007-10-21 04:42:39 · 4 answers · asked by genius 2

Please explain...

2007-10-21 04:30:27 · 2 answers · asked by Anonymous

What do scientists think is the next evolutionary stage for humans. will we have three hands, telekenesis, better jumping abilities or even bigger sex organs lol

2007-10-21 04:03:43 · 20 answers · asked by Anonymous

"Mutation only causes physical changes if it occurs in the sequence of a gene" The book had never before mentioned the sequence of a gene so I want an explanation to what it is and what this means.

2007-10-21 03:58:00 · 5 answers · asked by Emankcin 2

background:
Rabbits have been artificially immunized with sheep red blood cells in order to stimulate the production of agglutination and lysis. In this experiment the agglutination of the rabbit serum is measured. So I need to determine the agglutination titres of immune and non immune sera.
If the experiment went perfectly, do u know what would results i'd get?Please dont think im cheating, I misplaced the results,I've only got a photo of the haemagglutination tray.

method:
The immune rabbit serum was heated for 30 mins, to inactivate natural complement present in the serum.Then we made a serial dilution of the rabbit serum in phosphate buffered saline (PBS). Then placed 0.2ml from each dilution into a well in the hemaglutination tray.To each well we added 0.2ml of a 2% solution of sheep red blood cells in PBS pH7.2. Then we set up control wells containing 0.2ml dilution buffer and 0.2ml cell suspension. Then repeated method with non immune serum but with fewer dilutions.

2007-10-21 02:59:03 · 1 answers · asked by Anonymous

name as many as you can. links are always appreciated. thanks.

2007-10-21 02:38:00 · 6 answers · asked by That Guy Drew 6

2007-10-21 01:52:12 · 16 answers · asked by Anonymous

2007-10-21 00:57:36 · 5 answers · asked by Anonymous

It's funny that people choose to believe evolution over creation, when evolution takes much more faith than creation. You can choose to believe that all organisms, including humans which just happened to be the smart ones, came from a freaken rock/ooze/whatever since you don't know, or you can choose that a creator created us. I would rather choose god over an ooze that took millions of years to 'evolve'

2007-10-20 23:34:21 · 13 answers · asked by Anonymous

Well I think it is because of hormones. But is there any other reasons why women do have soft skin and body??

2007-10-20 21:18:01 · 9 answers · asked by Bluebird 6

2007-10-20 21:04:31 · 20 answers · asked by nagarvadhu 1

When I decide to move my finger, how does this decision (which is a "thought") get translated into the physical "action" of moving the finger? If you believe the thought itself is actually a physical entity (which thus "gets the physiological ball rolling"), then explain how the process of creating this physical thought works. In other words, how can my mere (non-physical) "will" set in motion a physical process?

2007-10-20 20:59:58 · 5 answers · asked by Bewildered 2

Wouldn"t a male have to be YY (which of course is not possible) to be 100% male?

I know that female is the default sex, and that for the first few weeks in the womb all are female to start with. Basically are all males bisexual because all are part female anyway?

2007-10-20 20:18:13 · 3 answers · asked by Nathan 4

2007-10-20 19:52:20 · 6 answers · asked by Anonymous

2007-10-20 15:59:58 · 5 answers · asked by sdjfhdkjsfgkuae 2

would show the best survival following exposure to UV radiation? explain

2007-10-20 15:07:02 · 1 answers · asked by 41 1

2007-10-20 13:55:29 · 2 answers · asked by Anonymous

y is it more people have recessive traits compared to people having dominant traits?

2007-10-20 13:40:51 · 5 answers · asked by Anonymous

wouldn't Natural selection eliminate sexual dysfunction early on, since its such a critical step in genetic prorogation, even if it remain recessive? For many a men, it's not simply a mental inhibition, but a biological reinforcement.

2007-10-20 12:48:49 · 4 answers · asked by Anonymous

2007-10-20 12:34:10 · 4 answers · asked by Anonymous

science question.

2007-10-20 11:49:01 · 14 answers · asked by pear~bear 2

Is it made of electriciy

2007-10-20 11:32:10 · 5 answers · asked by Anonymous

for example dams...but i need more.. please help.

2007-10-20 11:27:53 · 10 answers · asked by Christina S 1