Quiz me. Test my knowledge. Yes this will fail.

[gophins72]

1. When multiplying a matrix by its inverse, what is the resultant matrix called?
Identity matrix

2. Why do chemists perform recrystallization?
For purification
http://en.wikipedia.org/wiki/Recrystallization_(chemistry)

3. What is the mother liquor?
the stuff that's left over after crystallization
http://en.wikipedia.org/wiki/Mother_liquor

4. What is the significance of Stanley Miller’s experiments?
Mr pedantic and eits is correct.
http://en.wikipedia.org/wiki/Miller–Urey_experiment

5. What is the fluid-mosaic model?
Mr pedantic and eits is correct.
http://en.wikipedia.org/wiki/Cell_membrane#Fluid_mosaic_model

6. From Charles Dicken’s book “Great Expectations”, what is Phillip Pirrip’s nickname?
Pip
http://www.sparknotes.com/lit/greatex/section1.html

7. What is Mendel’s contribution to modern science? His work was not appreciated until after his death, what was his day job?
Contribution of genetics, was a friar, gardener, and cook.
http://en.wikipedia.org/wiki/Gregor_Mendel

8. The fact that Mitochondria have DNA suggests that they where once their own what?
They were their own cells (bacteria works too I suppose, though you probably meant prokaryotes).

9. What is Brownian Movement?
Brownian motion (named after the botanist Robert Brown) or pedesis (from Greek: πήδησις "leaping") is the presumably random drifting of particles suspended in a fluid (a liquid or a gas) or the mathematical model used to describe such random movements, which is often called a particle theory.
http://en.wikipedia.org/wiki/Brownian_motion

10. How are scientists able to figure out what a distant (outside of the solar system) planet’s atmosphere without sending a probe or personally visiting it?
spectroscopy

11. Which of your senses would most likely be damaged if you endure an injury to your temporal lobe?
I was going for hearing
http://en.wikipedia.org/wiki/Temporal_lobe

12. According to the famous anecdote, how did Archimedes prove that the crown given to his king was not made of pure gold?
Mr pedantic and eits is correct, He used buoyancy and displacement
http://en.wikipedia.org/wiki/Archimedes#The_Golden_Crown

13. Who created the first BBS (Bulletin Board System) in the world?
Tom Christensen

14. What is believed to be the business model that made pay-for-BBS’s profitable?
By offering Porn and warez.
http://en.wikipedia.org/wiki/BBS:_The_Documentary
http://www.bbsdocumentary.com/

15. Hydrofluoric acid is extremely powerful, able to eat through bone, skin, glass, etc. However, it is considered a weak acid while Hydrochloric acid which can not nearly eat through as much material is considered a strong acid. Why?
Although it is a more powerful and corrosive acid, it does not completely disassociate in water into ions, so HF is a weak acid, whereas HCl completely dissociates into H+ and Cl- when in water.

 

[eits]

8. The fact that Mitochondria have DNA suggests that they where once their own what?
They were their own cells (bacteria works too I suppose, though you probably meant prokaryotes).

bacteria are prokaryotes. the theory is that one day, a large anaerobic bacteria tried to eat up a smaller aerobic bacteria and it couldn't, but it became mutually beneficial for both cells and divided together. plant cells formed kinda the same way, except an algae organism was also engulfed by the large cell and it stayed to become a chlorophyll organelle. that's how eukaryotic cells (animal and plant cells) arose.

 

[eits]

Nope and nope.



I like long form answers. Lets me torture others the way I was tortured with them in university. :sneaky:

1. On the right track with the cable. It's actually a trick question. I'll give you part of the answer. XLR doesn't stand for anything. It's named after something.
2. Close. It is a vacuum tube. There are two types though. I'll give another hint. It's what made audio radio broadcasts possible.
3. Correct. Actually it's any mike with a heart shaped field of sound pickup.
4. Correctomundo. Actually the more important of the two IMO. Lays a lot of the groundwork for modern republicanism.
5. Right again.
6. Four for four.
7. This one is very obscure. Dennillfloss might know this one. I think he's into history. I'll give a hint. Happened in the 19th century.

1. the only thing that xlr reminds me of is a canon camera lol
2. telegraph? morse?
7. still have no idea. too obscure for me.

 

[gophins72]

bacteria are prokaryotes. the theory is that one day, a large anaerobic bacteria tried to eat up a smaller aerobic bacteria and it couldn't, but it became mutually beneficial for both cells and divided together. plant cells formed kinda the same way, except an algae organism was also engulfed by the large cell and it stayed to become a chlorophyll organelle. that's how eukaryotic cells (animal and plant cells) arose.

yep you're right and my knowledge is now further refined. :thumbsup:

 

[eits]

yep you're right and my knowledge is now further refined. :thumbsup:

yaaay knowledge!

i'm a fan of thinking you know something and then realizing you were wrong and learning from it... that way, you can't forget it. it's happened to me plenty.

 

[Locut0s]

Ok got to answer a bunch I see.

 

[Locut0s]

What is the answer to life?

42

 

[Locut0s]

everyone is a quiz champion with google. Just wait until they can do implants in your brain to pick up internetz.

No google used here, swear on the lives of those I love.

 

[Locut0s]

Why is mercury used for extracting gold?

I believe because gold is soluble in Mercury.

 

[Locut0s]

What is the significance of Lake Trasimene?

I've actually seen the shores of this lake. Large lake in Italy. I know it plaid a significant role in Roman history but I couldn't tell you what that was. Something to do with a battle.

What is hydroxyapatite and why is it important?

Hmm I knew this at one point. Or at least I've read about it but I can't remember.

What are rods and cones?

Rods and Cones are two classes light sensitive receptors in your retina. I believe Rods are sensitive to lower energy photons are are responsible for your night vision. Cones are responsible for our colour vision. I could have this backwards or slightly off. I know that the structure of the eye is actually reversed from what you would imagine it to be. The rods and cones are actually the final layer of the retina and the photons have to plow through the surface layers of blood vessels and neurons before reaching these structures. This is not at all the most efficient way of "building" and eye and is an evolutionary holdover.

In biochemistry, what is the Link reaction?

Don't know

How many times did Julius Caesar invade Britain?

Don't know. Twice?

How many wives did Henry VIII have? How many survived him?

Four I believe. Not sure any of them survived him but I'm going to say one.

Appeal to popularity. Sorry. Just because many people know about it does not mean it is important, or useful, or anything other than complete and utter drivel.

^^

 

[Locut0s]

You want science, I give you science.

What significant event happened to the earth about 4.55 billion years ago?

This is very close to the age of the earth itself. We don't have good evidence for when life evolved. It may have been as few as a few hundred million years after the earth formed. Not sure if this is what you are getting at. The actual answer I'm going to give is the formation of the moon due to the impact of a Mars sized object with the earth. So far this is the leading hypothesis for the moons formation.

What is the purpose of a branch prediction unit in a microprocessor?

to predict based on the code processed so far and on statistics what the most likely course of action the code will take next. This allows the processor to prefetch data before it's even actually requested and thereby speed things up. But it's only a very good guess and can be a miss guess, in which case you incur a speed penalty.

What was Howard Roark's profession?

He's a Roarker?

Why does a galvanic cell eventually cease to operate?

Not sure. I should know this one. A galvanic cell is a battery right, or something like one right?

What do you call the average perpendicular flow through a closed surface (hint: it is the average normal component * surface area)?

Flux

Who is credited with inventing the periodic table of elements?

I know this one and it's on the tip of my tonge.

What is the difference between hydrogen and deuterium?

Deuterium is an isotope of hydrogen. It has one extra neutron.

Why is carbon dating only reliable up to 40,000-50,000 years old?

Because of the 1/2 life of carbon 13. I believe the 1/2 life of carbon 13 is 6000 years. after 40-50,000 years one can no longer accurately measure the ratio of carbon 12 to 13 since there is so little 13 left.

Why can't you use carbon dating to decide how old a piece of rock is?

Because carbon dating measures the ratio of carbon 12 to 13 in living organisms. And in the case of dead organism the ratio it has declined to since the organism died.

What principle or "effect" in physics can you use to determine if a galaxy is moving towards or away from us?

Doppler shift.

What are the names of the islands that enabled Charles Darwin to formulate his theory of evolution?

Galapagos Islands

What was the chief value of Robert Milikan's Oil Drop Experiment, the results of which later earned him a nobel prize in physics?

Don't know

Which Jupiter moon is believed to be the most likely place for extraterrestrial life in our solar system due to a water ocean under a surface of ice?

Europa

What moon feature of Enceladus is believed to be the cause of Saturn's E-Ring, discovered by the Cassini–Huygens space probe in 2005?

Geisers of water vapour emanating from features on the moon's surface that have been designated tiger strips. It's believed this water comes from a possible liquid ocean under the surface of the moon.

What special feature of the earth allows us to experience the phenomenon as the Aurora Borealis (hint: the atmosphere is not the answer I'm looking for) ?

The earth's magnetic field which funnels particles from the sun's solar wind into earth upper atmosphere.

What is significant about the Cambrian era?

The so called Cambrian explosion during which there appears to have been a relatively sudden "explosion" in the number and diversity of species.

^^

 

[Locut0s]

How many holes does it take to fill the Royal Albert Hall?

Not even sure what this is about.

 

[Dr. Zaus]

I like to think I'm fairly knowledgeable about a broad array of topics. I'm no jeopardy champ and don't usually do very well on that type of quiz show but I do know I sometimes surprise people with what I know. So the game is ask me questions about, whatever, and I'll try to see if I know the answer. I will not look up the answers. This is going to fail and make me look like a complete idiot I'm sure, but meh I'm bored.

Questions I will likely know NOTHING about are sports and pop culture, oh and music , lol. I'll probably do better on science.

And yes I really won't look up the answers, I'm willing to make an ass of myself.

What is a theory and how does it differ from a description of how something works?

 

[Locut0s]

Thank you!

1. When multiplying a matrix by its inverse, what is the resultant matrix called?

Identify Matrix. It plays the role of the number 1 for Matrices.

2. Why do chemists perform recrystallization?

Don't know.

3. What is the mother liquor?

Don't know but I'd like some about now.

4. What is the significance of Stanley Miller’s experiments?

Don't know.

5. What is the fluid-mosaic model?

Don't know.

6. From Charles Dicken’s book “Great Expectations”, what is Phillip Pirrip’s nickname?

Don't know.

7. What is Mendel’s contribution to modern science? His work was not appreciated until after his death, what was his day job?

This I should know but can't remember.

8. The fact that Mitochondria have DNA suggests that they where once their own what?

They were once their own separate life forms. They became an organelle likely through a long processes of symbiosis.

9. What is Brownian Movement?

Brownian Movement is the random movement one sees in an optical microscope due to random heat fluctuation I believe.

10. How are scientists able to figure out what a distant (outside of the solar system) planet’s atmosphere without sending a probe or personally visiting it?

Through analysis of the spectrum of the light coming from the host star as it passes through it's planets atmosphere. Obviously after accounting for the stars own spectrographic make-up.

11. Which of your senses would most likely be damaged if you endure an injury to your temporal lobe?

Your ability to form long term memories.

12. According to the famous anecdote, how did Archimedes prove that the crown given to his king was not made of pure gold?

By showing that it displaced less or more water than such a crown would if made of pure gold. Supposedly he had the idea when getting into his bathtub, displacing water. Supposedly he ran naked through the streets shouting Eureka.

13. Who created the first BBS (Bulletin Board System) in the world?

Don't know

14. What is believed to be the business model that made pay-for-BBS’s profitable?

Hooker Pimp

15. Hydrofluoric acid is extremely powerful, able to eat through bone, skin, glass, etc. However, it is considered a weak acid while Hydrochloric acid which can not nearly eat through as much material is considered a strong acid. Why?

Acids are measure not by how much they can "eat" through but by how readily they give up Hydrogen ions H+. Or is it receive hydrogen ions? One is a measure of a base the other a measure of an acid.

^^

 

[Locut0s]

Note I know some answers have been posted by people. I am not looking at these before giving my own.

 

[Locut0s]

What is a theory and how does it differ from a description of how something works?

Technically a theory is a proposition on how something works, and it makes testable predictions. One needs to prove or disprove a theory by testing its predictions. If a theory makes no predictions it's not a theory, or at least not a useful one.

 

[Locut0s]

Interesting questions. This was mostly stuff I learned nearly a decade ago, it's nice to have some revision.

What is the shape of the sp2 molecular orbital?

I believe it's shaped like an infinity symbol. Sp1 (sphere) Sp2 (infinity symbol) Sp3 (infinity symbol with a torus at around its centre)

Who is Antonie van Leeukenhoek? (I hope I spelled it right)

Inventor of the microscope.

In maths, what is Newton's Method?

It's an analytical method of finding approximate solutions to equations.

What is phenolphthalein?

Something that phens?

What is the mechanism of action of caffeine?

Don't know

What, and where, is the hyoid?

I believe it's a bone close to the head or it's part of the skull?

In epidemiology, what is the difference between a cohort study and a longitudinal study?

Don't know

What organism is scientist Richard Lenski best known for researching?

No idea

Who was Arthur Wellesley and why is he famous?

Don't know

I've never been good with people on average

 

[Locut0s]

Some tech stuff. No cheating, I'll know.

In audio, what does "XLR" stand for?

I've seen this but can't remember

This part, invented in the first decade of the 20th century, made modern electronics possible. What is it, what does it do, and who invented it?

The transistor. It allows you to control the flow of current between an input and output via a small amount of current applied to a third control input, thus acting as a switch. Can't remember the name of the inventor though I know he worked for BELL labs.

What's a cardiod microphone?

No idea

History:

Machiavelli is best known for The Prince. What was his other major treatise, and what was it about?

I knew this at one point but I can't remember.

Name the two folk revolutionaries from the Mexican Revolution. What did they do for a living before joining their causes?

No idea

Politics:

What is mixed-proportional representation?

I'm guessing this is the system whereby voting districts are broken down into geographic "ridings". Each riding stands for one "vote" and the party who wins the most "votes" get's elected. This is in contrast to true proportional representation in which every persons vote actually counts at the national level and not just towards their riding. I could be really off on this one.

Who's the only Canadian federal politician to be assassinated?

Hmm. I don't even know this. lol

^^

 

[mmntech]

1. the only thing that xlr reminds me of is a canon camera lol

Hot dog, we have a wiener. It's named after the Canon XL, part number R.

Sorry Locut0s, it's not the transistor. The transistor was developed in the 1940s, not the 1900s. However, you're getting warmer. The transistor replaced this part.

More questiony goodness...

What was the first image ever on television?

Early radios used a complex set of batteries. Who invented the first radio set you could plug into the wall? Bonus: name a product currently sold under their name.

What was the original inspiration for Pokémon?

What did Che Guavara do before becoming a revolutionary? Where did he work?

What's liberation theology?

 

[uclaLabrat]

Yeah, sorry, 15 is off by a bit. HF is a weak acid because F- is a smaller conjugate base than Cl-, and thus the charge is localized in a smaller area, which is higher energy. Also, the size of the H+ ion and F- ion are closer in size, so the orbital overlap between H+ and F- is greater and thus the bond is stronger. HF eats through so many things because fluoride generally forms stronger bonds to things like calcium (teeth and bone) and silicon (glass), which enables it to eat away at the surface of these materials.

 

[gophins72]

hehe. my chemistry isn't THAT strong, I'll stick with my intro knowledge but will take your explanation of why it is a weak acid and add it. thank you. strong bonds as an explanation for less dissociation, hence smaller dissociation constant, hence weak acid.

 

[Locut0s]

Hot dog, we have a wiener. It's named after the Canon XL, part number R.

Sorry Locut0s, it's not the transistor. The transistor was developed in the 1940s, not the 1900s. However, you're getting warmer. The transistor replaced this part.

Vacuum tubes I guess. They play the same purpose though.

More questiony goodness...

What was the first image ever on television?

I want to say it was of some world leader. But I think I'm wrong.

Early radios used a complex set of batteries. Who invented the first radio set you could plug into the wall? Bonus: name a product currently sold under their name.

No idea. Only company I know of about that age would be RCA.

What was the original inspiration for Pokémon?

Not sure. I've played the games recently, they are surprisingly good. But I've never read any of the background info on them. They seem somewhat similar to tamagotchi in concept but that's probably wrong.

What did Che Guavara do before becoming a revolutionary? Where did he work?

Don't know. I know there is a good documentary film about his life that revolves around taking a motorcycle trip across the continent so I'm going to take a wild guess and say mechanic.

What's liberation theology?

A religion that posits that all breasts are confined to the prisons of their bras and are yearning to be "liberated".

^^

 

[busydude]

Early radios used a complex set of batteries. Who invented the first radio set you could plug into the wall? Bonus: name a product currently sold under their name.

Motorola. Droid 3.

 

[Dominato3r]

Will Pluto and Neptune ever collide?

 

[gophins72]

Will Pluto and Neptune ever collide?

wow, i wanted to google that

i say yes since their orbits overlap, but probably not for a while, their orbits take so long to occur.