Biology - December 2007

2007-12-11 04:44:26 · 5 answers · asked by Me 1

please help

2007-12-11 04:24:12 · 2 answers · asked by balrr4life 2

A. denitrification
B. deammonification
C. nitrogen fixation
D. ammonification
E. production of amino acids

2007-12-11 03:40:17 · 3 answers · asked by Anonymous

2007-12-11 03:25:44 · 1 answers · asked by airplane68 1

2007-12-11 03:12:47 · 2 answers · asked by Anonymous

2007-12-11 01:52:23 · 8 answers · asked by nina3vedi@sbcglobal.net 2

Why does it increase with temperature?

2007-12-11 00:46:20 · 7 answers · asked by Anonymous

When a human zygote is formed, the coded program in the form of DNA, chromosomes and genes starts de-coding and in 37 weeks a human body is formed, capable to breathe independantly outside the mother`s womb. The brain gets the ability by default, to control the required functions of the body to exist, grow and reproduce. Does it have limitations? I feel... yes. The human brain will never be able to conceive Cosmological truths in their entirety.

2007-12-11 00:46:15 · 2 answers · asked by Gee Waman 6

natural sources and chemicals

2007-12-11 00:29:41 · 2 answers · asked by chelsea b 1

2007-12-10 21:17:01 · 2 answers · asked by rahul t 1

2007-12-10 19:02:58 · 20 answers · asked by Anonymous

1. Let's say that in seals, the gene for the length of the whiskers has two alleles. The dominant allele (W) codes for long whiskers & the recessive allele (w) codes for short whiskers. What percentage of offspring would be expected to have short whiskers from the cross of two long-whiskered seals, one that is homozygous dominant and one that is heterozygous? Explain your answer and use a punnett square.

2. You are experimenting with flies in which red eyes (R) are dominant over white eyes (r). If the mother has white eyes, and the father is heterozygous. What are the expected results for genotype and phenotype?

2007-12-10 18:02:29 · 1 answers · asked by foxtrot 1

2007-12-10 17:01:57 · 5 answers · asked by i need help fast 1

What are they called?

2007-12-10 16:34:38 · 5 answers · asked by metal_same 2

Is the cycle just not going to continue and the cell won't divide?

2007-12-10 16:27:09 · 4 answers · asked by Anonymous

All off the following are movements plants can accomplish except:

1 folding and unfolding of leaves
2 rapid responses using action potentials
3 growth movements up or down in response to gravity
4 growth movements toward or away from light
5 changes in plant growth in response to touch

I think it is 4 because of phototropism, am I correct
(doubts in 3 and 4)

Thank You

2007-12-10 16:10:24 · 2 answers · asked by Anonymous

A - homozygous for two different gene pairs
B - heterozygous for two different gene pairs
C - recesive for three different gene pairs.
D - triploid

please select the correct fill in blank.

2007-12-10 15:51:58 · 9 answers · asked by Stud S 1

A - lipids
B - carbohydrates
C - enzymes
D - proteins

I selected B and got it wrong. Professor says - lipids is the correct answeer.
Obviously lipids are used for that purpose and indeed do store more energy, but carbhydrates are used to store energy for short term purposes too. Don't you think that the question is incorrect?
Thanks.

2007-12-10 15:46:10 · 4 answers · asked by Stud S 1

2007-12-10 15:27:23 · 2 answers · asked by FOXgirl7 1

annelids, sponges, chordates or mollusks?

2007-12-10 15:26:45 · 4 answers · asked by shawna 2

I thought the answer would be 5 chromosome in each daughter cell, but the answer sheet said 10 and it doesn't make sense how that worked. Can anyone tell me if its 5 or if it's 10 how did that happen.

2007-12-10 15:26:01 · 4 answers · asked by julz2589 1

My teacher has given our class extra credit and I'm not sure about the answers. Can someone please help me out?

This is the fill in the blank she has given us:
To do biological 1. _________, cells require energy.A quick source of energy that cells use is the molecule 2._______ . THe 3.__________ in this molecule is stored in its 4._______. ATP is composed of a (n) 5.______ molecule bonded to a(n) 6.____________ sugar. Three 7.________ molecules called 8.________ groups are attached to sugar.


This is the word bank below:
energy, ATP, phosphate, chemical bonds, adenosine, work, charged, and ribose

All help will be appreciated!
Thanks in advance!

2007-12-10 15:25:44 · 3 answers · asked by dragnslayaz 1

What is the difference between cytosol and cytoplasm?

2007-12-10 15:23:00 · 2 answers · asked by Anonymous

DNA codes for proteins ONLY. Keeping that in mind, how is aspects such as personality, a very conceptual matter, "coded" by something of a (dear I say) "tangible" element such as DNA? So, does proteins direct our personality? If so, how?

2007-12-10 15:12:21 · 4 answers · asked by Anonymous

are there any scientific facts behind this even, or is it just a educated guess?

2007-12-10 14:48:48 · 2 answers · asked by Anonymous

from a scientific viewpoint

2007-12-10 14:47:30 · 6 answers · asked by yo 2

Ok, so lets say i have animal cell A. The DNA in the nucleus has compacted to form 4 different chromosomes, each one shaped like an 'X' [with 2 chromatids and one centromere]. When the cell splits, the kinetochore fibers pull apart each of the 4 chromosomes, yielding 2 separate cells each with 4 HALF-chromosomes or 'chromatids'. Doesnt this mean that every time a cell does binary fission, it loses HALF its genetic information?

I just fail to see how this equation is even.
One cell has 4 chromosomes shaped like X's. It splits and makes 2 separate cells with 4 half chromosomes each [they are just shaped like lines]

PLEASE explain how cells formed by binary fission don't have HALF the genetic information as the original cell. This is really bothering me, haha.

2007-12-10 14:06:49 · 4 answers · asked by Anonymous

ive looked around in my science textbook and it doesnt say anything about that. it's for a poster.
heeeelp!
---Cheri

2007-12-10 13:09:32 · 1 answers · asked by Samantha 3

Any help would be great! Thanks

2007-12-10 12:52:09 · 3 answers · asked by mkpstar10 1

2007-12-10 12:50:07 · 2 answers · asked by coolio_de_fabio 2