Biology - February 2007

smooth ER


cisternae of the ER


Golgi Apparatus


tonoplast

2007-02-08 16:12:04 · 2 answers · asked by whatsinaname07 1

2007-02-08 16:01:51 · 7 answers · asked by okiejr136 1

in a certain population the dominant phenotype of a certain trait occurs 91% of the time. what is the freqency of the dominant allele?

2007-02-08 15:56:31 · 2 answers · asked by dave b 2

2007-02-08 15:52:55 · 4 answers · asked by Greg H 2

Jean Baptiste Lamark is commonly remembered for his discredited theory of inheritance of acquried traits. However many biologists including Darwin have respected him as a zoologist and evolutionary biologist. How did Lamark contribute to cell theory before the work of Shleiden and Schwann

2007-02-08 15:43:22 · 3 answers · asked by hockeyislife21 1

2007-02-08 14:53:55 · 4 answers · asked by pam r 1

2007-02-08 14:49:34 · 1 answers · asked by kitty 1

1. List 3 of the circulatory system working with other systems in your body
2. Explain why blood pressure is expressed with 2 numbers.
3. How does the circulatory system help your body mantain homeostasis?

i really need help. we have no books and i need these answers! if you know, help me PPLLEEAASSEE!!

2007-02-08 14:41:41 · 3 answers · asked by kenzie 1

XY chromosomes are for male, XX are for female, if possoblie(just imagine) what would YY give?

2007-02-08 14:30:32 · 9 answers · asked by Stefan F 1

What are the answers to: (fill in the blank)
EX) In normal cell reproduction the stage right before the daughter cells are formed is called ____________. (9 letters)
ANSWER: telaphase

1) Having only one set of chromosomes is called the __________ condition of the cell. (7 letters)
2) The process of duplicating the nucleus is called _____________. (7 letters)
3) A ___________________ is a fertilized egg. (6 letters)
4) Having two complete sets of chromosomes is called the ___________ condition of the cell. (7 letters)
5) The period of a cell's life cycle when its DNA is replicated is called _________________. (10 letters)
6) After the nucleus has been duplicated, the cytoplasm divides. This process is called__________________. (11 letters)
7) Cells used for sexual reproduction are formed by a process called _____________. (7 letters)
8) During metaphase the duplicated chromosomes are lined up on the equator of the _________. (7 letters)


THANKS FOR THE HELP!

2007-02-08 14:29:22 · 2 answers · asked by Anonymous

2007-02-08 14:26:41 · 1 answers · asked by ur_cutie_16 1

2007-02-08 13:58:09 · 1 answers · asked by Anonymous

?

2007-02-08 13:49:11 · 4 answers · asked by Anonymous

2007-02-08 13:36:35 · 8 answers · asked by Anonymous

two organisms of the same species differ in only a single trait. they are crossbred to analyze how the trait will be distributed.what is this procedure called?
a. completeness cross
b. dihedral cross
c. monohybrid cross
d. selection cross

which of the following is the correct term for the process by which an advantageous genetic mutation spreads throughout a species??
a. dominance
b. genetic drift
c. monohybrid crossing
d. natural selection



Plants capture energy from sunlight using properties of chlorophyII and other light-absorbing pigments. explain why chlorophyII makes plants leaves appear green.

at least 3 sentences for this one......

one of the simplest types of animal is the sponge. the sponge has a multicellular structure and specialized cells for digestion, water circulation, reproduction, and external covering. which of the following does the sponge lack?
a. sperm and eggs
b. tissues and organs
c. a supporting skeleton
d. genes and chromosomes

2007-02-08 13:13:06 · 1 answers · asked by shannon2rocks 1

Someone told me that when you pass a certain age, your genetic make-up is already set, so whatever you do isn't hereditary.

(Like if when you're 40 and you have high cholesterol, you can't pass it on) Is this true?

2007-02-08 13:07:30 · 6 answers · asked by Lita 2

2007-02-08 12:58:03 · 5 answers · asked by Anonymous

2007-02-08 12:50:48 · 9 answers · asked by cajusntrike 1

how do bacteria and unicellular protist differ?
a. bacteria have a complex interacellular structures like ribosomes.
b. bacteria lack a definite nucleus and have no nuclear membrane.
c. protist have a single chromosome in a nuclear region, but no nuclear membrane.
d. protist lack organized intracellular structures like mitochondria and chloroplast.

2007-02-08 12:40:36 · 5 answers · asked by shannon2rocks 1

PLZ HELP FOR BIO

2007-02-08 12:07:11 · 3 answers · asked by Anonymous

You have prapared a karyotype of an individual and have found that one of the chromatids of chromosome 4 is shorter than its homologue. What can you conclude has happened to this chromosome?

2007-02-08 11:57:59 · 2 answers · asked by Anonymous

If your job were to inform the parents of the fetus of their test results, what would you say?

2007-02-08 11:54:08 · 4 answers · asked by Anonymous

If the karyotype I constructed was for a female with downsyndrome, what chromose changes would be evident?

2007-02-08 11:49:53 · 3 answers · asked by Sumcraft 1

I have to do a project for my Biology class on Bioethics and I'm having trouble finding cases. I already did gene therapy last semster, so I cannot do that topic again. I have one topic on organ donation, though I need one more. I need cases that are not well-known. Things like cloning, abortion, and that kind of idea will not work. Does anyone know of any good case studies? Thanks.

2007-02-08 11:44:58 · 4 answers · asked by Sabaku no Gaara 2

I'm a freshman and im taking it this year and so far i have Barron's as study material. Is the test very detailed? What score is considered good? any input would be appreciated.

2007-02-08 11:20:20 · 2 answers · asked by i am soo asian 3

--How would the daughter cells that underwent cytokinesis, but not mitosis, look?

--How would the daughter cells that underwent mitosis, but not cytokinesis, look?



Thanks in advance.

2007-02-08 11:15:04 · 7 answers · asked by Eclipse 2

A woman with normal color vision has a colorblind daughter. What are the genotypes & phenotypes of both parent?

2007-02-08 10:54:12 · 3 answers · asked by brushpicks 2

2007-02-08 10:54:09 · 3 answers · asked by Anonymous

it is 4 science

2007-02-08 10:53:11 · 4 answers · asked by babyphatgurl 1

Explain why there are a wide variety of phenotypes for skin color in humans

2007-02-08 10:51:15 · 6 answers · asked by brushpicks 2