Biology - February 2007

I heard there were few different techniques involved and I am not sure if there are actually true. Can someone enlighten me on the subject? Is there just one technique that is used? If so, how is it done?

2007-02-21 08:34:45 · 3 answers · asked by The Young Creator 2

I have a worksheet in Biology. Here are some of the questions. Please help! **Distinguish between the terms in each of the following pairs of terms**
1. histone, nonhistone
2. chromatid, centromere
3.sex chromosome, autosome
4. diploid cell, haploid cell

5.What role do proteins play in enabling the enourmous amount of DNA in a eukaryotic cell to fit into the nucleus, and what are those proteins called?
6.In what was are homologus chromosomes similar?
7. Some relatively simple eukaryotes, such as adder's tongue fern, may have many more chromosomes than a more-complex eukaryote, such as a mammal. What might this suggest about the size and organization of chromosomes in different species?

8. Prokaryotic cells reproduce by a process called
a. mitosis
b. meiosis
c. binary fission
d. binary fusion


9. In eukaryotic cells, DNA is copied by a process called
a. M phase
b. S phase
c. G1 pase
d.G2 phase

2007-02-21 08:20:16 · 2 answers · asked by †Emily† 3

I am looking to prove a point with students, and while the chimp-human relation is obvious, it's old hat to these kids. I need something to shake them up a bit, but must be able to back it up with a reliable resource!

Thanks!

2007-02-21 08:20:04 · 6 answers · asked by Seagull_72 1

2007-02-21 08:06:47 · 2 answers · asked by WEHA 3

2007-02-21 08:06:16 · 6 answers · asked by WEHA 3

Justify ur Answer!!!!!!!!!

2007-02-21 08:04:12 · 4 answers · asked by JSquare 1

2007-02-21 08:03:45 · 3 answers · asked by WEHA 3

2007-02-21 07:48:39 · 13 answers · asked by Ashish 2

2007-02-21 07:25:04 · 10 answers · asked by nathalie_l_d 1

2007-02-21 07:02:42 · 1 answers · asked by Anonymous

I mean, theres an obvious reason why women have them...logically they aren't an accident and they aren't necessary so why?

2007-02-21 06:51:46 · 4 answers · asked by J: 1

2007-02-21 06:48:55 · 4 answers · asked by side_neck 1

I have a science project. The project is to prove that insulin and other protein/peptide hormones can be synthesized in a fairly simple and inexpensive manner, using machines and materials that a slightly above-average laboratory would have, or would have the funds to buy.

I need more information (including very specific laboratory protocols) on how recombinant proteins ARE synthesized, as well as how they CAN BE theoretically synthesized. Keep in mind that keeping cost of materials down is a priority second only to producing the proteins.

Please do not reply saying I should have chosen an easier project.

2007-02-21 06:48:17 · 6 answers · asked by Think. 3

Hi all

This is slightly morbid but for my coursework I have to analyse a fictious crime.

I's like to know what happens to a body in a cold river? Will decomposition be slowed down?

Also say a person drown in said river... Imagine if they had a tie or scarf on and it got caught on something, could this leave bruising around the neck area?

Again sorry to be morbid!

Any help would be appreciated!

2007-02-21 06:46:57 · 9 answers · asked by Belle 3

They say it might be the cause of smoking, or drinking !

What if a person doesnt smoke or drink but his blood is very thick and dark ?

2007-02-21 06:37:53 · 8 answers · asked by int_69h 3

2007-02-21 06:34:34 · 7 answers · asked by side_neck 1

The process by which transmitter chemicals move across the synapse is
A.osmosis
B.diffusion
C.active transport
D.endocytosis

The answer I believe is c

The presence of a myelin sheath can increase the speed of nerve impulses from about 1 m/s to around 100 m/s. This increase is cause by the

A.increased rate of repolarization of the neuron membrane
B.unbroken flow of electrons between the nodes of Ranvier
C.continuous conduction of the impulse along the myelin sheath
D.movement of the action potential between the nodes of Ranvier
I belive the answer is either D or C not quite sure

thanks is advance!!

2007-02-21 06:28:41 · 2 answers · asked by Anonymous

How do they feed?
How do they reproduce?
What is their medical and economic importance?
Why are they in a phylum together?

2007-02-21 05:37:28 · 1 answers · asked by Anonymous

2007-02-21 05:13:29 · 3 answers · asked by carlos o 1

Why is the same trend not true as you move down a group?

Can you give at least one example to support your answer please.



Thank you!!!!!!


I am writing a report and want to make sure I got all the facts correct. Can you help plz?!

2007-02-21 04:58:14 · 4 answers · asked by Sublime 2

What is ultrasonic hearing please?

2007-02-21 04:47:04 · 4 answers · asked by Anonymous

I have two questions from my AP Bio class that I'm not sure of. Any help is appreciated.

1. What are the most important factors influencing terrestrial distributation?

2. What is the largest biome on Earth?

2007-02-21 04:40:21 · 2 answers · asked by BlueEyedAngel 2

2007-02-21 04:21:35 · 6 answers · asked by cooldudepa24 2

2007-02-21 04:12:47 · 4 answers · asked by angeljackie10 1

do identical twins hit puberty and start menstruating at the same time?

2007-02-21 03:50:32 · 10 answers · asked by Anonymous

2007-02-21 03:09:13 · 2 answers · asked by courtney s 1

both parents are A postive and the child is O postive? there is NO affair involved

2007-02-21 02:52:14 · 6 answers · asked by Debbie M 1

i only hit my stomach with hammers?

2007-02-21 02:42:37 · 7 answers · asked by Anonymous

2007-02-21 02:23:47 · 2 answers · asked by bryan d 1

In my honest opinion I believe it is the sense of smell.

2007-02-21 02:07:28 · 14 answers · asked by Anonymous