Biology - January 2007

I'm doing a project that may involve testing for coliform bacteria, but I don't want to buy too many test kits if there aren't even going to be bacteria anyway (test kits are quite expensive), so I'd like to know beforehand what the chances are that the lake has bacteria. By lake, I mean a small lake that you might find in a park (e.g., Central Park in NYC).

2007-01-22 16:00:55 · 4 answers · asked by Anonymous

I don't see other mammals' hair to grow indefinitely. Is it something special only seen on humans?

2007-01-22 15:54:10 · 1 answers · asked by Quantum 1

2007-01-22 15:29:21 · 5 answers · asked by qbkr21 1

2007-01-22 15:24:56 · 15 answers · asked by Anonymous

is there a cultural, geographical or societal reason

2007-01-22 15:14:48 · 6 answers · asked by M.B. G 1

2007-01-22 15:12:55 · 1 answers · asked by M.B. G 1

2007-01-22 14:33:17 · 2 answers · asked by sidharth_17k 1

2007-01-22 14:27:00 · 2 answers · asked by Anonymous

2007-01-22 14:26:35 · 1 answers · asked by Anonymous

TO GET VOTED BEST ANSWER YOU MUST ANSWER THE FOLLOWING QUESTIONS!!!WHEN ANSWERING NUMBER THE ANSWER SO IT MATCHES THE QUESTION!!!

1)What type of tissue makes up the walls of the heart?

2) To which parts of the body do the right and left sides of the heart pump blood?

3) Through which blood vessels does oxygen-rich blood return from the lungs to the heart?

4) Why is the wall of the left ventricle is thicker than that of the right ventricle?

5) Describe the path that oxygen-poor blood takes into and out of the heart.

6) Name the four valves in the heart. What is the purpose of these valves?

7)What structure seperates the right side of the heart from the left side of the heart? Why is this structure important?

2007-01-22 14:23:52 · 4 answers · asked by system error 2

help please- if you could give like 2 differences and 2 similarities i would love you forever! well atleast i'd be really grateful.

2007-01-22 14:18:18 · 1 answers · asked by christie m. 2

2007-01-22 14:02:58 · 3 answers · asked by bunnylover1987 1

TO GET VOTED BEST ANSWER YOU MUST ANSWER THE FOLLOWING QUESTIONS!!!WHEN ANSWERING NUMBER THE ANSWER SO IT MATCHES THE QUESTION!!!

1)What type of tissue makes up the walls of the heart?

2) To which parts of the body do the right and left sides of the heart pump blood?

3) Through which blood vessels does oxygen-rich blood return from the lungs to the heart?

4) Why is the wall of the left ventricle is thicker than that of the right ventricle?

5) Describe the path that oxygen-poor blood takes into and out of the heart.

6) Name the four valves in the heart. What is the purpose of these valves?

7)What structure seperates the right side of the heart from the left side of the heart? Why is this structure important?

2007-01-22 13:34:11 · 1 answers · asked by system error 2

I have a forg i want to discect but i want to see if i can keep it alive what can i use to knock it out but keep it alive this is completely legal where i live so please serious answers only and no sarcasim

2007-01-22 13:13:00 · 9 answers · asked by Anonymous

how many proteins are found in the plasma membrane? what are the names of these proteins, and what are their functions? i cant find it anywhere and i need to know for a bio exam tomorrow so if someone could answer that would be awesome...thanks!!

2007-01-22 13:01:32 · 3 answers · asked by Anonymous

How come guys and girls (if your like that you dont have to be gay to like them) like **** so much, there just great!!! i really want to know what part of your brain triggers in a person that creats this attraction?

2007-01-22 12:34:05 · 8 answers · asked by Anonymous

please explain everything, but also what happens after its a protien (DNA>RNA>polypeptide>protein>.........)

2007-01-22 12:24:12 · 3 answers · asked by Anonymous

2007-01-22 12:22:02 · 8 answers · asked by eldwill 4

help due tomorrow

2007-01-22 12:18:56 · 8 answers · asked by abercombie123 1

plese help, due tomorrow!

2007-01-22 12:17:44 · 3 answers · asked by abercombie123 1

Things such as what happened in FarCry and in the not so good movie, Doom. This aspect of super human abilities.

2007-01-22 12:12:21 · 8 answers · asked by Anonymous

Can somebody tell me if they're the same things?
And what are they?

2007-01-22 11:52:39 · 1 answers · asked by Lady Di 1

2007-01-22 11:40:14 · 5 answers · asked by Anonymous

2007-01-22 11:37:32 · 7 answers · asked by Anonymous

Base the question on overall resemblence

2007-01-22 11:24:36 · 1 answers · asked by Bart S 1

I have a few problems out of a packet of them that are giving me troubles. These are the problems:


1. An albino hemophilic man marries a normally pigmented, non-hemophilic woman whose father is hemophilic and whose mother was an albino. What is the expected ratio of genotypes and phenotypes among their sons and daughters? (This one is giving my problems because I know hemophilia to be a sen-linked recessive trait, but what about albinism? From what I unerstand there are several types?)


2. In a flock of turkeys, if you found that in some matings you got a ratio of two males to one female, what explanation seems most likely? (I know that poultry, which is ZZmale/ZWfemale, can change sex with operatory procedures, but if there were a sex change, it would either be a ZZxZZ cross, producing all males, or a ZWxZW cross, producing 1 MALE and 2 FEMALES, and a lethal. How can I switch the ratio?)


Thanks if you can help! :)

2007-01-22 11:20:40 · 2 answers · asked by Anonymous

Which of the following is False?



a. Substrates are usually smaller than the enzymes that act on them

b. Each enzyme binds with a unique type of molecule called its substrate

c. Enzymes eventually wear out and are replaced

d. A cell contains only a few enzymes, maybe only one and usually less than 10

e. Enzymes are proteins

2007-01-22 11:16:14 · 5 answers · asked by mini 1

if so, provide me with an article.

2007-01-22 11:02:27 · 3 answers · asked by You are stupid 1

how does anatomy show evidence of evolution? give example, like Darwin's finches with their evolving beaks... thanks

2007-01-22 10:50:37 · 3 answers · asked by Anonymous

An approximate percent if possible would be nice. Thank you so much, I really appreciate it!

2007-01-22 10:44:35 · 8 answers · asked by tylerb013 1