Biology - November 2007

2007-11-14 16:26:41 · 8 answers · asked by Anonymous

2007-11-14 16:24:40 · 2 answers · asked by 123456789 1

Are the chromosones within a cell physically linked to each other by a string of DNA, or are they completely seperate?

2007-11-14 16:21:46 · 11 answers · asked by Chris tf 2

2007-11-14 15:25:38 · 3 answers · asked by van l 1

Where and how specifcally, does it happen?

2007-11-14 15:15:52 · 2 answers · asked by ASL 5

2007-11-14 15:09:17 · 2 answers · asked by Anonymous

2007-11-14 15:02:28 · 1 answers · asked by ch@rlene 3

I have a question for my AP lab that my friend and I are having trouble answering. Any help will be greatly appreciated. Thanks.

What organelles (or structures) do onion epidermal cells possess that are NOT found in human cheek epithelial cells?

I'm pretty sure cell wall is right but I'm not sure about chloroplasts. This is because I don't know what part of the plant they are talking about when it says "onion epidermal cells". I know epidermal means "skin", but does it mean the skin of the onion or the skin of the leaf? And there could be other organelles too. I'm so confused. =(

2007-11-14 15:01:25 · 2 answers · asked by ashley2325 2

hint: what types of tissues does it contain.

i dont actually know this answer. i havnt learend about hands yet? please help me thank-you.

2007-11-14 14:53:16 · 3 answers · asked by TheDarkness 1

What will be the ratios of genotypes and phenotypes of the F1 gen. resulting from the following cross: axial-red (true breeding) X terminal white?

I'm not asking for the answer, but what does it mean they they describe the flowers as axial and terminal.

2007-11-14 14:49:55 · 4 answers · asked by shadow82795 1

I have a biology test on Friday, and I need to finish my review, but I don't understand most of it! If anyone could, could someone answer at least one of these questions:
What are two jobs of water's hydrogen ions?
How is oxygen involved in light reactions?
What are excited electrons passed down?
What type of transport is used to pump Hydrogen ions?
How does the hydrogen pump get energy?
Where does the energy come from to make ATP in the light reactions?
What happens when light strikes photosystem I?
What are the products of the dark reactions?
Where do the products of the Calvin cycle go?

It would be REALLY helpful if someone could answer some, one, or maybe all. Thanks!

2007-11-14 14:45:18 · 1 answers · asked by Kazumi H 1

which observation below comes closest to explaining the basis for placing these organisms in different taxa?
a. some closely resemble animals, which lack cell walls
b. their cell walls are constructed form very different biochemicals
c. some have cell walls only for support
d. some have cell walls only for protection from herbivores
e. some have cell wasll only to control osmotic balance

2007-11-14 14:26:21 · 4 answers · asked by Colleen C 1

It has to relate with hypertonic solutions.

2007-11-14 14:12:35 · 2 answers · asked by LiL_Blu86 1

can someone explain to me why the fetus in the womb is a person and not just cells?

2007-11-14 14:02:29 · 36 answers · asked by Jen 2

How can an organism exhibit a trait not passed by either parent?

2007-11-14 14:02:07 · 7 answers · asked by babe 2

Ok the question is:

When you work harder, your muscle cells work harder and increase in size. How might various organelles in a muscle cell increase in size, number, or activity to respond to the challenge of an increased workload?

Please only answer if your 100 % sure of you're right. Thanks.

2007-11-14 14:00:26 · 4 answers · asked by Katie L 2

2007-11-14 13:57:25 · 11 answers · asked by xoxshortiee92x 1

Okay so a normal male and a female carrier for color blindness produce 6 female children and 5 males. None of the males are colorblind. Sooo... how do you find out how many females are color blind? and would this be an example of X-linked recessive?

2007-11-14 13:43:46 · 2 answers · asked by Anonymous

True science states that in order for a theory to become a fact, it must be reprodused in a lad successfully many times over. Sence noone was there in the beginning to record the exact conditions, any experiments must be based on unproven speculation. Therefore, the theory of evolution, is a faith based religion ( Humanism ), just as the theory of creation is. What is your response to this statment, and please show your reasons.

2007-11-14 13:41:42 · 16 answers · asked by Michael G 1

I drink a cup of milk practically every day in hope of becoming taller, my sister and brother are tallish but I have another brother who is like 5''3. Is drinking milk going to help at all??? If not what will, I'm not interested in getting shots to postpone my period or make me grow.....

Thanx!

2007-11-14 12:50:11 · 2 answers · asked by heyyyyy 3

Disease ecology: what does it entail?

2007-11-14 12:01:56 · 2 answers · asked by Jess 2

what are examples of mollusks?
are they all complex?
do they all have a complex nervous system?
what are the major parts of a mollusk?

2007-11-14 11:49:43 · 7 answers · asked by Anonymous

Wat is the function of the embryo and how it is formed?

2007-11-14 11:09:32 · 1 answers · asked by Anonymous

In humans, the trait for A type blood and B type blood show incomplete dominance, so that a person with both genes has blood type AB. Both A and B dominate type O. A person with a gene for type A blood and type O blood marries someone with a gene for type B blood and type O blood. List the types of offspring they could have and the probability for each blood type in the offspring.

2. Suppose that gene b is sex-linked, recessive, and lethal. A man marries a woman who is heterozygous for this gene. If this couple had many normal children, what would be the predicted sex ratio of these children?

3. A particular sex-linked recessive disease of human beings is usually fatal. Suppose that by chance, a man with the disease lives past puberty and marries a woman heterozygous for the trait. If they have a daughter, what is the probability that she will have the disease?

2007-11-14 10:51:17 · 2 answers · asked by Anonymous

2007-11-14 10:32:27 · 4 answers · asked by Bruno S 3

2007-11-14 09:47:57 · 4 answers · asked by Anonymous

2007-11-14 09:46:09 · 4 answers · asked by damigurl05 1

2007-11-14 08:30:16 · 32 answers · asked by Anonymous

One that could be used for experiments that should be tested in human blood but tested in animal blood first. Thanks :)

2007-11-14 08:28:22 · 7 answers · asked by Anonymous

if identical twins have the same DNA would it be possible to tell which twin fathered the child, and also do they have the same fingerprint

2007-11-14 06:53:58 · 50 answers · asked by jo2004uk2004 2