Biology - March 2007

We can hear in stereo with two ears and see in 3-D with two eyes, so why can't we smell in 3-D with two nostrils?

2007-03-19 07:15:08 · 5 answers · asked by Anonymous

In a test tube where the Biuret's reagent solution is present, it appears as though the reagent bonds with yeast cells that are also present in the test tube. I am asking this question because I want to directly (through scientific experimentation) determine if the cell membrane of yeast cells contains protein (for a biology class). Does Biuret's solution bond with protein molecules?

2007-03-19 07:03:22 · 4 answers · asked by cdunn 2

2007-03-19 07:02:43 · 2 answers · asked by Anonymous

Could you tell me what the difference is between a carcinogen and a mutagen.

2007-03-19 07:02:04 · 2 answers · asked by Anonymous

?????????? waht would they use it for?

2007-03-19 07:02:00 · 10 answers · asked by Anonymous

2007-03-19 06:51:31 · 1 answers · asked by keilani05 1

I am talking about lymphatic system. How can you describe it in a simple term?

2007-03-19 06:47:08 · 2 answers · asked by emglad17 1

I need to make a 3-D plant cell If anyone can help I would appericate it. give good detail on how to assemble and products to use. Thanks

The scoring rubric say this.

Cell size after complete- 4x6 to 9x12
Type of cell- plant
cell membrane- What should I use?
nucleus- What should I use?
cytoplasm-What should I use?
vacuole- What should I use?
smooth or rough endoplasmic reticulum- What should I use?
ribosome- What should I use?
lysosome- What should I use?
golgi bodies- What should I use?
mitochondria-What should I use?
organelles to be included - What should I use?
cell wall- What should I use?
chloroplast- What should I use?

2007-03-19 06:44:32 · 1 answers · asked by texastwister333 1

i dont kno his stats

2007-03-19 06:42:59 · 2 answers · asked by Anonymous

my mom wont tell me

2007-03-19 06:41:13 · 5 answers · asked by Anonymous

some people have less then 10

2007-03-19 06:39:35 · 4 answers · asked by Anonymous

17. Explain why animals cells do noy burst due to osmotic pressure.

2007-03-19 06:34:02 · 1 answers · asked by Anonymous

14. If placed in water, a cell would swell adn possibly burst due to_______________.

2007-03-19 06:21:36 · 5 answers · asked by cherryvalley2006 2

13. after mitosis, the cytoplasm of cells is pinched in half. In cells of ____________, cell walls are formed.

2007-03-19 06:20:09 · 3 answers · asked by cherryvalley2006 2

12. during cell division in bacteria
A. a circle of DNA is copied
B. chromosomes coil and move
C.the cell splits into 3 parts
D. two new nuclei are formed

2007-03-19 06:18:45 · 4 answers · asked by cherryvalley2006 2

10. during mitosis:
A. chromosomes are copied
B.chromosomes move to oppostie sides of the wall
C.cytoplasm divides in half
D.a new cell wall forms in the center of the cell

2007-03-19 06:15:45 · 3 answers · asked by cherryvalley2006 2

9. Particles too large to pass through protein channels in the cell membrane.
A. exocytosis
B.selective diffusion
C. endocytosis
D.osmotic pressure

2007-03-19 06:11:24 · 3 answers · asked by cherryvalley2006 2

2007-03-19 05:56:58 · 5 answers · asked by Anonymous

1Adrenaline increases the heart rate,blood pressure,and blood supply to skeleton muscles,increases the conversion of glycogen to glcose and stimulates the rate of metabolism.
2Gonads,the ovaries in females and the testes in males,are the gamete-producing organs of the body.They also produce a group of steroid sex hormones.
3There are two separate glands located at the top of each kidney.
4The sensory receptor is the first element in the sensory pathway.
5Neurotransmitters such as acetylcholine and serotonin are always stimulatory.
6There are only two types of nerves, sensory nerves and mixed nerves.
7The nervous system is divided into the central nervous system (CNS) which is composed of the brain and spinal cord and the peripheral nervous system (PNS) which includes all the nervous tissue outside of the central system.
8Nerves are given their white appearance by the myelin sheath that is found around each nerve fiber
9The surface of the brain is smooth.

2007-03-19 05:03:17 · 2 answers · asked by kissesfromhvn807 2

2007-03-19 04:18:18 · 11 answers · asked by Anonymous

what osmotic regulatory challenges would a fish living in freshwater have versus a fish living in salt water?

also, when preparing sauerkraut, shredded cabbage, it is layered with coarse salt crystals. what affect would this have on the cabbages cells?

2007-03-19 04:06:56 · 4 answers · asked by Anonymous

I have performed a mid-parent, offspring regression analysis and have gome up with the result of 1.27. How is this possible? My tutor has told me there is a reason, but wont tell me why.
It is for my degree level dissertation, so I really need to explain this, and well.
Thank you

2007-03-19 04:01:17 · 2 answers · asked by Fred 3

2007-03-19 04:00:12 · 8 answers · asked by erin m 1

:-)

2007-03-19 03:52:11 · 3 answers · asked by Thrasher Man 2

Project in biology, so I need interesting information.

2007-03-19 03:05:27 · 3 answers · asked by M?r?? P 5

2007-03-19 02:57:12 · 6 answers · asked by Anonymous

2007-03-19 01:49:17 · 9 answers · asked by John Yogi 2

In doing routine Gram stains in the laboratory, how would you determine whether your method is reliable?

2007-03-19 01:42:25 · 4 answers · asked by on_gt 1

Do our skin really breath? Why not carbon dioxide and oxygen didn't diffuse from our blood stream out of our body through sweat pore? Sometimes in hot day, I feel there's air coming out of my cloth, is it my skin breathing or just evaporation of sweat?

2007-03-19 01:19:19 · 4 answers · asked by Lai Yu Zeng 4

Revising for AS level mock for PE, and my notes say 'Blood pressure is equal to BLOOD PRESSURE x RESISTANCE'

This cannot be correct, can it?

2007-03-19 01:01:50 · 1 answers · asked by Cookie_Monster_UK 5