Biology - November 2007

Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Staphylococcus epidermis.

2007-11-20 01:20:19 · 4 answers · asked by Anonymous

2007-11-19 19:34:24 · 4 answers · asked by Anonymous

ok so i know that a homolgous chromosomes are the two chromosomes composing a pair have same length, centrosome position, and stain pattern. but sometimes ...Homolgous chromosomes can also be non-identical chromosomes that contain information for the same biological features and contain the same genes at the same loci but possibly different genetic information
...right????
k so i am confused ....it says we inherit i chromosome from each parent ( chromosome is basicaly 1/2 of X what i mean is a line : / )
so on the karyotype it has 22 pairs of homolgoues chromosomes = 46 homolgoues chromosomes?
= 46 x 2 = 92 chromosomes right?
so then that dvided by 2 is 46 chromosomes ....so then why do they say 23 chromosmes from each parent?
shouldn't it be 23 homolgouse pairs / pairs /duplicated chromosomes?
very confused because in one chapter it says the X = duplicated chromosomes and / is a chromosome ( sorry the closest thing to a isual)
on the other chapter it sems like a chromosome = X

2007-11-19 19:07:58 · 3 answers · asked by lubp@sbcglobal.net 2

wether his heart stop working or his brain or else.

2007-11-19 18:37:41 · 20 answers · asked by Rahul M 2

just a quick question from homework.

2007-11-19 18:31:01 · 6 answers · asked by Chika_Bwhaha 3

Is the statement, "In most biology expieriments, the relationship between independent and dependent variable can best be described as cause and effect," True or False?Why

2007-11-19 16:49:30 · 1 answers · asked by Tony 1

2007-11-19 16:40:12 · 5 answers · asked by surreal_j04 1

I'm talking power wise

2007-11-19 16:37:31 · 3 answers · asked by Anonymous

2007-11-19 16:34:52 · 5 answers · asked by **Smalls** 1

Does anybody know the name of the machine that spins the amniotic fluid to compact the fetal cells???
Also, does anyone know what will happen to that compacted cells???

2007-11-19 16:28:39 · 1 answers · asked by hmm... 1

2007-11-19 16:25:41 · 7 answers · asked by Anonymous

2007-11-19 16:17:28 · 5 answers · asked by navarroben 1

I'm reading about synapsis and tetrads in Prophase I, and in the picture it has two sister chromatids, and I don't understand how there are 4 total chromosomes, so that when in Anaphase, splitting occurs in meiosis, each new cell has one chromosome from each homologous pair. Why wouldn't it have two? I know tetra means 4, but I don't understand how this works. Isn't a homologous chromosome singular?

2007-11-19 16:09:36 · 7 answers · asked by Anonymous

2007-11-19 16:06:07 · 2 answers · asked by kat 2

The process of translation. What are the roles of mRNA, tRNA, and how and the process ensures the proper sequence of amino acids in a finished protein.

2007-11-19 15:58:33 · 4 answers · asked by flower 2

Compare and contrast the events that occur during prophase of meiosis I and prophase of mitosis and anaphase I of meiosis and anaphase of mitosis.

2007-11-19 15:56:18 · 4 answers · asked by flower 2

Where the following pathways occur within the cell or specifically where in an organelle
Glycolysis
Transition Step
Krebs Cycle
Electron Transport Chain
Alcohol Fermentation
Lactic Acid Formation

2007-11-19 15:55:16 · 4 answers · asked by flower 2

All i know is that apoenzume is the protein portion of an enzyme. The cofactos in the inorganic molecule (Mg, Zn, so forth) and the coenzyme is the organic molecule (vitamin). I need help with this question.

.An apoenzyme
A. is often an inorganic metal ion.
B. is an RNA molecule.
C. is part of a simple enzyme.
D. is also called a coenzyme.
E. contains the active site.

2007-11-19 15:53:32 · 5 answers · asked by Chitchat5 1

Using an online program, I just crossed a Drosophilia:

Wild type female for antennae and aristopedia shaped antennae for the male. With no information on which allele is recessive or dominant, any ideas on which is?

I am having some serious problems with this.

Thanks!

2007-11-19 15:42:25 · 5 answers · asked by surya0902 2

2007-11-19 14:50:52 · 1 answers · asked by Dung N 1

I was wondering if there is Lipids in DNA or Chromosones. Human, instinct species or not, is there lipids in DNA or Chromosones?

If you could provide your source that would be graciously apreciated!

2007-11-19 14:26:12 · 6 answers · asked by Anonymous

i have to answer that why is the lysosome important?

2007-11-19 14:25:28 · 9 answers · asked by = ) 4

2007-11-19 14:25:28 · 4 answers · asked by ♥♫_jasmine_♫♥ 2

Please help me answer these! Just one is fine! THANKS A BUNCH!

1. Summarize how energy is made available by chemical reactions and describe what happens to the usable energy.

2. How is ATP similar to sugar? To DNA?

3. Energy needed for metabolism does NOT come from:
__A. food
__B. lipids
__C. carbohydrates
__D. water

4. Most enzymes are:
__A. lipids
__B. carbohydrates
__C. proteins
__D. nucleic acids

5. Explain the relationship between an enzyme and the activation energy of the reaction in which the enzyme participates.


IF ANYONE COULD HELP CONTRIBUTE TO MY STUDY GUIDE, THANK YOU SO MUCH!

2007-11-19 14:17:55 · 2 answers · asked by confusion ! 3

2007-11-19 13:01:15 · 5 answers · asked by Anonymous

I see many people here discussing evolution v. creation. Many of the people discussing it don't really seem to be scientists or have much science background (that's only an impression though).

It got me wondering if your average person can really understand the science of evolution. Anatomy, genetics, chaos theory- they are all fairly complex.

Any thoughts?

2007-11-19 12:58:35 · 11 answers · asked by Anonymous

Im just wondering why fungus tends to grow more-so on stumps than on living trees?

2007-11-19 12:46:50 · 3 answers · asked by hipnotikgurl 1

a) xylem : stomata
b) phloem : roots
c) lenticel : woody stems
d) vascular bundle : dermal tissue
e) pith : ground tissue

2007-11-19 12:10:09 · 1 answers · asked by Shakera L 1

I know they're too attract different living creatures to continue they're reproduction, but is that it?

ahhh, I need help!

2007-11-19 12:04:29 · 6 answers · asked by meghan♥ 4

My son has a science experiment, he chose to extract DNA from veggies, but is having a difficult time trying to think of the "question" for his project? He doesnt simply want to do "how to extract DNA" but wants to have more to it, like with a variety of veggies or fruits or whatever he can extract DNA from.

2007-11-19 11:36:50 · 3 answers · asked by Rina 5