Introductory Courses

What exactly is a Med Tech? Or Medical Laboratory Scientist?

What exactly is a Med Tech? Or Medical Laboratory Scientist?

I am a nursing student (sophomore), but I no longer is interested in pursuing that path, now one of my friends told me about being a Med Tech or an MLS (what is the difference? isnt it the same thing?) what exactly is it? and what is a Clinical Labor

buddysp_vn   324   1 Reply

nursemula

How does a denatured enzyme affect the Vmax and Km compared to a natured enzyme?

How does a denatured enzyme affect the Vmax and Km compared to a natured enzyme?

I am doing a Biology Lab on Enzymes: Function and Factors that Affect Enzyme Activity. I am not exactly sure what to expect/hypothesize.

budi   918   2 Replies

lexitolbert

You work in a DNA processing laboratory, and need to analyze a sperm sample from a sexual assault case that in?

You work in a DNA processing laboratory, and need to analyze a sperm sample from a sexual assault case that in?

You work in a DNA processing laboratory, and need to analyze a sperm sample from a sexual assault case that involved multiple male attackers. Which of the following type of DNA analysis would you choose for this particular case?

a) RFLP
b)Y-marker a

budsworth   394   1 Reply

datoledo88

A student weighing 400 N stands on a laboratory scale in a moving elevator. At this time, the reading on the s?

A student weighing 400 N stands on a laboratory scale in a moving elevator. At this time, the reading on the s?

A student weighing 400 N stands on a laboratory scale in a moving elevator. At this time, the reading on the scale is 350 N. What inference can be made about the motion of the elevator?
Select one:
a. The elevator is accelerating upward.
b. The eleva

buffalo   436   2 Replies

datoledo88

Why is water not weighed on an analytical balance?

Why is water not weighed on an analytical balance?

We did a lab testing the relationship between volume and amount of gas

We placed lab gas into a 50 mL erlenmeyer flask and weighed it 3 times on an ANALYTICAL balance. We then filled the flask with water to the point at which the stopper had been in

bufi   568   4 Replies

ask4help

What would the ctrl group be in an experiment where u put different amount of Mentos into each bottle of coke?

What would the ctrl group be in an experiment where u put different amount of Mentos into each bottle of coke?

I have to do a science experiment in Science where we have to change one of the variables to be tested. I chose to put different amounts of Mentos into each bottle to see if it would effect the height of the fountain made by the Mentos and Diet Coke.

bugaboo810   421   1 Reply

bio_man

How important is the second organic chemistry lab to med schools?

How important is the second organic chemistry lab to med schools?

I took the lecture, but not the lab.

Bugbaja   333   1 Reply

Datchile

One Lab Question about Recrystallization? Outline the successive steps in the crystallization of an organic so?

One Lab Question about Recrystallization? Outline the successive steps in the crystallization of an organic so?

One Lab Question about Recrystallization?
Outline the successive steps in the crystallization of an organic solid from a solvent and state the purpose of each operation.

Bugbaja   552   1 Reply

datasian

What can I buy a lab coat with slits so i can access my pockets easily?

What can I buy a lab coat with slits so i can access my pockets easily?

I recently graduated college and started my full-time job as a chemist.  I need to purchase a lab coat that has the slits in the side so that I can access my pockets.  Where can I find one of these?

bugel2000   1111   1 Reply

Smntnl

When Young's double slit experiment is done with electrons, do they annihilate each other in the dark regions?

When Young's double slit experiment is done with electrons, do they annihilate each other in the dark regions?

Also, I heard that this experiment has been done with bucky ballls, what was going on with them?  It seems like they would be too massive to have their wave functions cancel each other out.
PS

When two photons undergo destructive interference, do th

bugg   291   1 Reply

LenChan64

Will the neutralization buffer from a mini prep kit go bad if not stored at 4C?

Will the neutralization buffer from a mini prep kit go bad if not stored at 4C?

I bought a new mini prep kit but forgot to put the neutralization buffer at 4C until 2 weeks after the kit got here.  Is it still ok?  Will the RNase still work?

BUGG123   674   1 Reply

irina

How do I find the pH of a buffer solution with addition of NaOH?

How do I find the pH of a buffer solution with addition of NaOH?

How do I find the pH of a buffer solution with addition of NaOH?


I have the following information...
I have 25 ml of my buffer solution made up of 0.10M acertic acid and 0.10M acetate ion. My measured pH was 2.55. Now I am to add 10.00 ml of .025M

BUGG123   608   1 Reply

Bugrahan

How do I explain lab observations in terms of equilibrium?

How do I explain lab observations in terms of equilibrium?

I did the equilibrium lab and I was asked for my observations. After, I was also asked to describe what happened in terms of equilibrium. What does that mean and what is it asking me for?

I was given

Cu(OH)2(S)  Cu+2  +  2OH-

and asked to desc

BUGG123   332   3 Replies

smnam

What happens when strong base is added into a buffer?

What happens when strong base is added into a buffer?

I just want the idea on what to do.
The real question I want to solve is this:
What is the pH if I add .01 moles of NaOH to a buffer which has a pH of 3.44?

buggingout16   445   2 Replies

bugmenot1

what is a good buffer to resist the addition of an acid in the blood?

what is a good buffer to resist the addition of an acid in the blood?

I am wanting to find the best buffer to add to blood, that won't kill the blood cells and will resist the highest amounts of alcohol. This is for a Physiology lab project btw.
I meant resists the addition of an acid not an alcohol!

buggingout16   489   1 Reply

buhlig

How do buffer systems react to low/high pH in the blood?

How do buffer systems react to low/high pH in the blood?

If the pH of the blood were to become too low (or too high), how would a buffer system react?

buggmoma10   419   1 Reply

buggingout16

How does a solution that contains dissolved ammonia and ammonium chloride act as a buffer?

How does a solution that contains dissolved ammonia and ammonium chloride act as a buffer?

Use net ionic equations to show how this buffer responds to added H+ and OH-.

buggmoma10   886   N/A

buggmoma10

How do I make a buffer with a specific pH?

How do I make a buffer with a specific pH?

Given 0.1M solutions of acetic acid and sodium acetate, describe how to make 1L of a 0.1M acetate buffer solution at pH 5.4?

buggmoma10   777   1 Reply

bolbol

Calculate the pH of a buffer solution that contains sodium acetate and acetic acid?

Calculate the pH of a buffer solution that contains sodium acetate and acetic acid?

Calculate the pH of a buffer solution that contains 0.820 grams of sodium acetate and 0.010 moles of acetic acid in 100 ml of water. The Ka of acetic acid is 1.77 x 10-5.
If you could please show the steps on how to do this, I'm very confused. Thank

buggmoma10   777   1 Reply

Bugrahan

How to calculate the volume of acid and salt of a buffer solution using H-H equation?

How to calculate the volume of acid and salt of a buffer solution using H-H equation?

for example calculate the volume of 0.2 M aceic acid and 0.2 M sodium acetate, needed to prepare 50ml of 0.1M acetate buffer solution (pH=4.5). pKa of acetic acid is 4.74.

buggyg69   911   1 Reply

kweber

Which of the following statements about a buffer solution is not true?

Which of the following statements about a buffer solution is not true?

A. A buffer solutionís pH changes much less than an aqueous solution when a strong acid or base is added.

        B. A buffer solution is a solution that contains an ion and its parent weak acid (or base).

        C. A buffer solution can maintain

buglitter   1554   N/A

buglitter

Buffer calculations. I need to calculate the the amount of buffer solutions to add in order to get a certain p?

Buffer calculations. I need to calculate the the amount of buffer solutions to add in order to get a certain p?

I need to make a 0.1 M glycine buffer with a pH of 9.4. I have two buffers of 0.1 M glycine that have a pH of 9 and a pH of 10. How would I make 200mL of my pH 9.4 glycine buffer? Thank you in advance for your help!

bugmenomore   605   1 Reply

Bugmenot

what is the most common buffer in extracellular fluids?

what is the most common buffer in extracellular fluids?

What is the most common buffer in extracellular fluids: Phosphate, sodium and potassium, hemoglobin, or bicarbonate?

bugmenomore   2466   1 Reply

cloveb

If you have 500ml of a 10x buffer stock, how much concentrated buffer and water wuld you need to use?

If you have 500ml of a 10x buffer stock, how much concentrated buffer and water wuld you need to use?

You have 500ml of a 10x buffer stock. You need to make 500ml of 1x buffer to use for an experiment. How much concentrated buffer and water would you need to use?

Ahh, I keep getting like two different answers for this one.

bugmenot1   656   2 Replies

bugnsprout

How to use equations to show how a buffer resists changes in pH.?

How to use equations to show how a buffer resists changes in pH.?

How do I show equations on how a lactate buffer resists changes in pH?  The components of the lactate buffer are lactic acid, HC3H5O3, and lactate ion, C3H5O3-, often provided as sodium salt.

I know it's probably very simple, but I can't find an exa

bugmenot1   755   N/A

bugmenot1

How to find the pH of a buffer when a strong acid is added?

How to find the pH of a buffer when a strong acid is added?

A buffer was made by mixing 0.1426 moles of HClO2 with 0.1565 moles of NaClO2- and diluting to exactly 1 liter. What will be the pH after addition of 10.00 mL of 0.2579 M HNO3 to 50.00 mL of the buffer? Ka(HClO2) = 1.100x10-2.  

I solved up the poi

bugnsprout   604   1 Reply

bugmenot1

Acids and Bases: How do you tell how resilient a buffer is?

Acids and Bases: How do you tell how resilient a buffer is?

I have a titration of a strong acid and weak base, with 10mL of the weak base. As it's titrating I know the solution becomes a buffer, but how do I know at which point it will be the strongest? Kb = 5.1 E-4
.150M base and acid

bugnsprout   452   1 Reply

buggingout16

Is acetic acid in water considered a buffer?

Is acetic acid in water considered a buffer?

I keep reading that a buffer consists of a weak acid or base and its conjugate. So would acetic acid(CH3COOH) mixed with water be considered a buffer since it partly dissociates into its conjugate base (CH3COO-) and thus both the acid and its conjuga

Bugrahan   429   1 Reply

BuggerFormic

Buffer question: How to calculate the volume?

Buffer question: How to calculate the volume?

Calculate the volume of 1M NaOH solution that needs to be added to 0.1M citric acid solution to prepare a buffer of pH 4.0?

Can someone show me how to do it?

Bugrahan   698   1 Reply

irina

How do I calculate the pH of this buffer solution?

How do I calculate the pH of this buffer solution?

I mixed together 4.1 grams of solid sodium acetate, 8.5 mL of 6.0 Molar acetic acid and added water to make the total volume 100 mL.  What is the pH of the buffer solution going to be and how do I go about calculating it?

buhneeduh1218   375   1 Reply

BUGG123

why is soap salt and water a good extraction buffer for DNA?

why is soap salt and water a good extraction buffer for DNA?

I did a lab activity for my forensics class and we extracted DNA from a strawberry using an extraction buffer of Soap, Salt, and water. Why would we use this?

buhneeduh1218   499   1 Reply

Bugmenot

Can someone help me explain gel electrophoresis in relation to amino acids?

Can someone help me explain gel electrophoresis in relation to amino acids?

Can someone help me explain gel electrophoresis in relation to amino acids?

buk280forlife   1537   2 Replies

vcm2223

How to memorize every muscle in the body?

How to memorize every muscle in the body?

I'm taking this course and its extremely way too much to soak in,, such a short period of time. Memorizing ever muscle in the body this week. ANY suggestions welcome. Any documents to share? im sure I failed the skeletal lab. please help

candy451   3371   6 Replies

TeslaBrain

Effect of Exercise on Arterial Pressure and Vascular Resistance

Effect of Exercise on Arterial Pressure and Vascular Resistance

Topic: Effect of Exercise on Arterial Pressure and Vascular Resistance
Predictions
1.   Exercise will cause MAP to
2.   Exercise will cause systemic vascular resistance to
3.   Exercise will cause CO to
Materials and Methods
1

Careclub   1211   7 Replies

Joyceline Tweneboa

A student wrote the formula for the compound aluminum phosphate as AlPO4 . What

A student wrote the formula for the compound aluminum phosphate as AlPO4 . What

A student wrote the formula for the compound aluminum phosphate as AlPO4 . What is wrong with this formula?

A) The compound is not charge-neutral.
B) Aluminum is a nonmetal so it cannot form an ionic compound.
C) The formula sho

CDAVISON14   980   1 Reply

bolbol

Which of these men supplied military leadership in the Italian independence movement?

Which of these men supplied military leadership in the Italian independence movement?

Which of these men supplied military leadership in the Italian independence movement?

   Count Camillo di Cavour

   Giuseppe Mazzini

   Giuseppe Garibaldi

   Victor Emmanuel

Channtelj   485   1 Reply

bio_man

Biology Lab: Cell cycle and Cancer

Biology Lab: Cell cycle and Cancer

Has anyone seen/done this lab before??   


Lab 2 Worksheet:  The Cell Cycle and Cancer

Student instructions:  Follow the step-by-step instructions for this exercise found on the worksheet below and in th

12

Charlie   21861   21 Replies

vickay

Biology Lab: Plant Transpiration

Biology Lab: Plant Transpiration

Has anyone ever seen/done this lab before??   


Lab 3 Worksheet:  Plant Transpiration

Student instructions:  Follow the step-by-step instructions for this exercise found on the worksheet below and in the

Charlie   35751   7 Replies

bio_man

Produce the exact spreadsheet shown below:

Produce the exact spreadsheet shown below:

1.   Produce the exact spreadsheet shown below:

Texas Spectrum Wireless
Car Products Inventory Valuation
As of December 31
   Warehouse Location   Quantity In Stock   Retail Price   Total Retail Value   Percent of Total Retail Value

ChichiIloka   1187   N/A

ChichiIloka

How do I analyze my standard curve if my data is off?

How do I analyze my standard curve if my data is off?

Hi,

I am having trouble doing my assignment because of bad results.

I created a standard curve for protein concentration from BSA. Then I did four serial dilutions of an unknown sample. Something went wrong while doing the dilu

Chordate   1079   5 Replies

barry