Biology - January 2007

Or is it autosomal?

Is it dominant mutation or recessive?

And is it monohybrid or dihybrid?

2007-01-24 14:20:16 · 2 answers · asked by yeknumnknurd64 1

2007-01-24 14:17:11 · 7 answers · asked by Anonymous

1. Between which types of compounds in a double-stranded DNA molecule must ht bonds break before replication take place?
a. phosphate base
b. sugar-phosphate
c. adenine-thymine
d. sugar-base

2. to which organelles does messenger RNA attach?
a. chloroplasts
b. ribosomes
c. mitochondria
d. lysosomes

3. the coded info in a DNA molecule directly determines the formation of____
a. polysaccharides
b. lipids
c. monosaccharides
d. polypeptides

4. if the code for an amino acid is ATG on the DNA molecule, this code on the transfer RNA molecule may be written as
a. ATG
b. CTG
c. AUG
d. CTA

errghh... i dont like DNA stuff, so if you can explain how you got the answers itd help me out alot!! thankss :]

2007-01-24 14:12:19 · 4 answers · asked by Anonymous

DNA , white blood cells, lysogenic, lytic, AIDS, proviruses.

Many disease- causing viruses have both lytic and (16)_____cycles.For example,when HIVs infect(17)_____,the virus enter a lysogenic cycle.Their genetic material becomes incorporated into the(18)______of the white blood cells,forming(19)_____. When this happens,the white blood cells still function normally,and the person may not appear ill. Eventually,the proviruses enter a(20)_____cycle,killing the white blood cells.As a result, the person loses the ability to fight diseases and develops(21)______.

2007-01-24 14:09:18 · 6 answers · asked by Anonymous

Women who's first babies are larger than average at birth tend to always have large babies. Similarily, If the first baby is smaller than average, her other children will be too. Can this pattern be explained only on the basis of genes, or are there other factors involved.

2007-01-24 14:01:48 · 4 answers · asked by ronni_macaroni 1

answer keys for study guide

2007-01-24 14:01:05 · 2 answers · asked by dodo02261994 2

Some examples of the abnormalities I'm talking about result in Down's Syndrome (extra chromosome 21), Turner's Syndrome (only one X chromosome), Klinefelter's syndrome (an extra X chromosome), and Monosomy 7 (absent chromosome 7).

2007-01-24 13:51:34 · 3 answers · asked by Anonymous

___1.genetic material of a virus
___2.where a virus attaches to a host cell.
___3.nonliving particle that replicates inside a living cell.
___4.a virus proteis coat
___6.Layer that surrounds the capsid of some viruses
___7.a virus that surrounds the capsid of some viruses
___8.A cell in wich a virus replicates

a. virus
b.T4 phage
c.DNA or RNA
d.capsid
e.receptor site
f.envelope
g.host
h.attachment protein

2007-01-24 13:51:24 · 3 answers · asked by Anonymous

2007-01-24 13:50:00 · 10 answers · asked by archie t 1

A man with blood type A had a father whose blood was type O. This man marrys a woman whose blood type is AB.

a.) What are the genotypes of the man, his father, and his wife?

b.) What are the possible blood types this couple's children may have.

2007-01-24 13:49:31 · 5 answers · asked by ronni_macaroni 1

2007-01-24 13:42:23 · 6 answers · asked by chicka0002002 2

2007-01-24 13:39:23 · 4 answers · asked by Jeanette D 1

what happens to the degree of diversity at both ends of the scheme, from the higher taxonomic levels to the lower taxonomic levels.

2007-01-24 13:34:52 · 3 answers · asked by georgia_gurl345 2

eukaryote, prokaryote, asexual, single-celled

im stumped on this one.
plz answer!!!!!!!!!

2007-01-24 13:29:36 · 6 answers · asked by ♫ singin_gurl1200 ♫ 3

Okay, I am doing a study guide that [thank goodness!] i can use on my biology final, but I am so clueless when it comes to RNA Transcription and RNA translation. I tried so hard to understand, but it confuses me. So, anyway, I was wondering if someone could explain to me both RNA transcription and RNA translation. What information I would like is what it generally is, and how it works, such as the steps to it. Please, I really need help!!!

2007-01-24 13:27:01 · 6 answers · asked by Anonymous

I'm going over a Biology study guide for finals and I haven't the faintest idea on how to explain the presence of both chloroplasts and mitochondria in plant cells. Here are the options I've narrowed it down to:

-If plants cannot produce enough ATP in the process of photosynthesis to meet their energy needs, they can produce it in aerobic respiration.

-The leaves and sometimes the stems of plants contain chloroplasts, which produce ATP to meet the energy needs of these plant parts. The roots of plants contain mitochondria, which produce ATP to meet the energy needs of these plant parts.

An explanation of your answer and some sources would be excellent. Thanks much. :]

2007-01-24 13:20:39 · 4 answers · asked by Anonymous

2007-01-24 13:18:17 · 3 answers · asked by no name 1

explain how light touch stimulates a nerve impulse.
how does the impulse travel to the brain.
where in the brain is the impulse received?

2007-01-24 13:17:31 · 1 answers · asked by Anonymous

what happens to the degree of diversity at both ends of the scheme, from the higher taxonomic levels to the lower taxonomic levels.

2007-01-24 13:01:22 · 3 answers · asked by georgia_gurl345 2

2007-01-24 12:56:18 · 2 answers · asked by rainingfrogs29 1

2007-01-24 12:54:28 · 1 answers · asked by altpro9 2

A black, smooth guinea pig was mated with an albino, rough guinea pig. Their offspring were black rough and black smooth. These were the only types produced over a period of years in a number of matings. Black and rough are dominant traits. What was the probable genotype of each parent?

2007-01-24 12:52:50 · 2 answers · asked by M 2

any ideas?

2007-01-24 12:38:44 · 6 answers · asked by OOH sheahh 1

2007-01-24 12:29:07 · 1 answers · asked by krnbellax3 3

Ok guys, its about that time again when comparative vertebrate embryology leaves me exasperated. I need the stages a frog goes thru from fertilization all the way up to a tadpole. Links with pics would also be nice. Thanks guys, where would i be without you??!!!Start answering....GO

2007-01-24 12:21:05 · 1 answers · asked by bookworm 2

2007-01-24 12:17:30 · 4 answers · asked by Anonymous

What is Chemiosmosis/ chemiosmosis in chloroplasts???

2007-01-24 11:43:47 · 7 answers · asked by f.lipped 2

2007-01-24 11:41:27 · 2 answers · asked by chris12perez 1

???

2007-01-24 11:39:56 · 5 answers · asked by Anonymous

1- Explain what the phrase "mutation proposes, selection disposes" in regard to evolution by natural selection.

2- How has the conflict between the everyday & scientific usage of the word "theory" contributed to the controversy over the theory of evolution by natural selection?

3- Why are many features of dolphins & ichthyosaurs considered to be analogous but not homologous?

4- How do "transitional forms" provide evidence for evolution? Give 1 example.
--------
1- ? I have NO idea, I don't really understand the phrase.

2- ? I'm not sure about this one either.

3- I want to say it's b/c they have similar traits, but that their traits aren't from a common ancestry. IDK if that is a proper/full explanation though.

4- ? I think it's b/c transitional forms show the relationship of change throughout time. I don't know how to explain that more in depth.An example would be whales.

Can someone please help explain these concepts to me.I would really appreciate it. Thanks!

2007-01-24 11:27:05 · 5 answers · asked by Miss*Curious 5