Science & Mathematics - 5 February 2007

2007-02-05 13:15:40 · 1 answers · asked by brian_rambadan 2 in Physics

True or False. Re write the false statements making them true.

1. Animal cells do not have chloroplasts.

2. All organisms consist of many cells.

3. The cell wall controls the movement of materials into and out of the cell.

4. The chromosomes are found in the nucleus.

5. The green chloroplasts in a plant cell manufacture food for the cell.

6. Cellular respiration takes place in animal cells but not in plant cells.

7. In the mitochondria, energy is released from glucose molecules.

8. Most plant cells contain many small vacuoles.

9. The carbon dioxide that is a product of cellular respiration is used as a reactant in photosynthesis.

10. Both plant and animal cells are enclosed within a cell wall.

2007-02-05 13:14:50 · 5 answers · asked by ronni_macaroni 1 in Biology

2007-02-05 13:14:17 · 5 answers · asked by Jennifer H 1 in Engineering

I hear it all the time, but i don't know what it means

2007-02-05 13:13:40 · 10 answers · asked by The Ponderer 3 in Other - Science

Three strings are tied together. They are on top of a circular table and meet exactly in the center of the table. Each of the strings hangs over the edge of the table, and a weight is supported from it as shown. The masses m1 = 3.70 kg and m2 = 6.60 kg are known. The angle α = 72.6 degrees between strings 1 and 2 is also known.

What is the angle β between strings 1 and 3?

Where do I start on this problem? What equations relate to a problem like this?

Thanks.

2007-02-05 13:11:11 · 2 answers · asked by Defcon6 2 in Physics

find a formula for the inverse of the function
f(x)=

9x-1
_____

7x+9

2007-02-05 13:11:01 · 6 answers · asked by Christie 1 in Mathematics

Which one would have the least density and which one the greatest density?

2007-02-05 13:10:52 · 2 answers · asked by THOMAS J 1 in Chemistry

given an unknown substance, how do i determine ( describe) if it contained, starch, sugar, protein, or lipids?

thankyou

2007-02-05 13:10:10 · 1 answers · asked by abc 1 in Biology

1. Burial
2. Cremation
3. Donate organs to medicine
4. Donate body to science
5. Let someone else decide
6. Cryonic Freezing
6. Mummification
7. Other

2007-02-05 13:08:16 · 6 answers · asked by God Fears Me 3 in Medicine

what is the purpose of substances like amylase, pepsin

2007-02-05 13:06:54 · 1 answers · asked by abc 1 in Biology

For a movie scene, an 85.0 kg stunt double falls 12.0 m from a building onto a large inflated landing pad. After touching the landing pad surface, it takes her 0.486 s to come to a stop. What is the magnitude of the average net force on her as the landing pad stops her?

2007-02-05 13:06:47 · 1 answers · asked by oscarv_56 1 in Physics

2007-02-05 13:06:20 · 4 answers · asked by Anonymous in Geography

meter shower

2007-02-05 13:06:18 · 4 answers · asked by halakabish 1 in Astronomy & Space

1) The ratio of girls to boys at a school dance was 3 to 2. If there were 30 boys at the dance, how many girls were there?

2) (4*5*6)*(1/4*1/5*1/6) = ??

3) The present time is 9 A.M. What time will it be 3600 seconds from now?

4) A 2 pound pizza is cut into 8 slices of equal weight. Find te weight of three slices of the pizza in ounces.

Show work PLEASSEE

2007-02-05 13:06:09 · 7 answers · asked by P E R S O N 2 in Mathematics

Last question for the night =)

2007-02-05 13:05:55 · 3 answers · asked by skoolgirl 1 in Biology

hurry I need a response NOW!!!!!!

2007-02-05 13:05:48 · 7 answers · asked by girlygirl92194 1 in Earth Sciences & Geology

i need people to answer my question below and take this seriously for my project which i have to come up with a new invention. Have any ideas for me?

1) what problems in life would you like to be seen made easier?

2) if u could invent anything to make life easier ehat would that be?

3)What invention does not work as well as you would like it?

2007-02-05 13:05:33 · 4 answers · asked by Anonymous in Other - Science

2007 space shuttle

2007-02-05 13:04:39 · 3 answers · asked by *!aries 4 lyfe!* 2 in Astronomy & Space

what is gravitational force

2007-02-05 13:03:49 · 7 answers · asked by mourning_soldier_us 2 in Astronomy & Space

1) What is 25% of 50% of 100.

2) what percent of 4 hours is 8 seconds?

3) Each of a certain type of tire on a 4 wheel car last exactly 10,000 miles. How many spare tires of this same variety must be carried so that a trip of 15000 miles can just be completed(assuming no tires are defective)?

4) The sum of the first 100 positive whole number is 5050. What is the sum of the first 100 positive odd whole numbers?


Show work pleasee

2007-02-05 13:02:11 · 5 answers · asked by P E R S O N 2 in Mathematics

Hello folks , please help me , there is an equation when you use the base of the bar by the top of the bars dimensions and when you use this with something it will prove the is true gold or a fake bar , does anybody know this ?? It always comes out to the same number which i believe is the atomic number of Au , sorry its a bit vague , i know what iam trying to say but it wont translate to my fingers , i hope you get me and can help !!

2007-02-05 13:02:09 · 5 answers · asked by Anonymous in Mathematics

2007-02-05 13:02:04 · 7 answers · asked by ♥IslamForever♥ 5 in Other - Science

2007-02-05 13:01:35 · 4 answers · asked by whatever_9123 1 in Chemistry

Just curious. I see people being shot generally near the chest and some gurgle some don't. Why do they gurgle blood and where are they shot?

2007-02-05 13:00:11 · 11 answers · asked by Anonymous in Biology

The difference in energy carried by electrons at different points in a circuit will determine the

a) voltage.
b) resistance.
c) current.
d) power.

2007-02-05 13:00:02 · 4 answers · asked by Anonymous in Other - Science

1) The winner of the shot-put event in the Olympics is the person who best uses___________.

a. Newton's first law
b. Newton's second law
c. air resistance
d. the law of gravity

2) State each of Newton's three laws of motion in your own words, and give an example that demonstrates each law.

2007-02-05 12:59:54 · 1 answers · asked by J 6 in Physics

is true?

2007-02-05 12:59:50 · 1 answers · asked by dk 6 in Biology

How is it? Would you recomend participating? Is it hard? What kind of research do you recomend?

2007-02-05 12:58:01 · 3 answers · asked by eringerran 2 in Other - Science

if you do come up with an answer, please give me some directions on how you figured it out!

2007-02-05 12:56:55 · 7 answers · asked by =] 2 in Mathematics

why do living organisms need the following substances: protein, carbohydrates, lipids.
thankyou

2007-02-05 12:56:54 · 2 answers · asked by abc 1 in Biology