Upper-Year Courses

Physiology

Physiology

Can somebody please explain why the latent period in a muscle twitch doesn't change with the increasing intensity of the stimulus being applied.

lovinlovely   1112   5 Replies

bio_man

Are M.D.'s scientists?

Are M.D.'s scientists?

Don't get me wrong, being a doctor has got to be one of the hardest and most important professions there is. However, science in terms of professional research revolves around falsifying hypotheses through experiments which leads to innovation. Rathe

teom   790   5 Replies

JulieT

Physioex 9.0 Exercise 1

Physioex 9.0 Exercise 1

I'm having a really hard time doing this assignment, any help would be great.

ACTIVITY 1:  Simulating Dialysis (Simple Diffusion)
1.   The molecular weight of urea is approximately 60.  Which of the membranes can it pass

Vickys05   16092   5 Replies

momoash

Physio ex 9.0 Activity 5 exercise 1

Physio ex 9.0 Activity 5 exercise 1

2.) Explain why there was no sodium transport even though ATP was present?


3.) Explain why the addition of glucose cariers had no effect on sodium of potassium transport?

ansocegueda   3455   5 Replies

Dove2011

Need help.. Exercise 2: Skeletal Muscle Physiology Worksheet

Need help.. Exercise 2: Skeletal Muscle Physiology Worksheet

Activity 9:  Isotonic Contractions

3.   You can observe from the trace that the muscle is rising in force before it reaches the plateau phase.  Why doesn’t the muscle shorten prior to the plateau phase?

7.   

Nicholle87   6992   5 Replies

ppk

Lab 8

Lab 8

Can someone please help me with these questions my brain is on fire




4.     An oscilloscope:
a.    Provides stimulus to a tested muscle
b.   Adds weight (load) to a tested muscle
c.   Measures a twitch resp

hallli   2664   5 Replies

MedicLife

Anatomy and Physiology Help Renal System NEED HELP FAST.

Anatomy and Physiology Help Renal System NEED HELP FAST.

Can some one please help me with these questions?

What is the maximum osmolality of the interstitial fluid?

What is the renal threshold of glucose?

What factors result in dilute urine?

Thank you all so muc

llscott777   3531   5 Replies

bio_man

physioex 8.0

physioex 8.0

Good evening, i have been working on my lab but im kinda stuck with just one question in lab 5 title cardiovascular dynamic. below is the question:
Try to Explain why this graph differs from the radius plot in the vessel resistance experiment. R

joyce de34   7405   5 Replies

duddy

Describe the chemical changes that are occuring during this period?

Describe the chemical changes that are occuring during this period?

In activity 2, how long was the latent period? 2.78
-Describe the chemical changes that are occuring during this period?

From activity 3, describe the effect of the increasing voltage. What happened to the forst generated and why did

lil_one7979   7029   5 Replies

duddy

What are CFU assays?

What are CFU assays?

What are CFU assays and what are they used for?

Thank you =)

ehd123   1169   6 Replies

ehd123

How can this problem be started? Serial diution problem using DNA stock solution

How can this problem be started? Serial diution problem using DNA stock solution

It says: 
You are given 10 µL of a DNA stock solution that has 1.0 µg target DNA/µL. The target DNA molecule is 2.9 kb in length.

Describe a set of serial dilutions that would yield a standard curve with the following concentrat

chapstick323   3563   6 Replies

duddy

Suntans and Sunburns A Case Study

Suntans and Sunburns A Case Study

A Painful Winter Break

     On the first day after arriving in Australia for Christmas vacation, a University of Niagara student plays out in the sun for six hours.  Later that night he notices that the skin on his trunk, le

ojsummer   4719   6 Replies

Hooray_Sports

does anyone has a good protocol to extract collagen type I from human/mamal bone

does anyone has a good protocol to extract collagen type I from human/mamal bone

 

nausicaa   8216   6 Replies

nausicaa

Review Sheet Exercise 4: Cell Membrane Transport Mechanisms

Review Sheet Exercise 4: Cell Membrane Transport Mechanisms

1.The motion of molecules
a. reflects the kinetic energy of molecules
b. reflect the potenital energy of molecules
c. is ordered and predictable
d. is random and erratic

2. Kinetic energy
a. is higher in larger mol

nkeaton   11622   6 Replies

bio_man

PHYSIOEX 8.0 ANATOMY AND PHYSIOLOGY EXERCISE 5

PHYSIOEX 8.0 ANATOMY AND PHYSIOLOGY EXERCISE 5

i kindly need help with this .physioex 8.0 for A&P EXERCISE 5


PAGE 65 EXXERCISE 5
1.What happened to the fluid flow rate as the radius of the flow
tube was increased?
Cardiovascular Dynamics 65
FIGURE 5.1 Open

berfrye   9910   6 Replies

POCKY

Lab Logs

Lab Logs

Hello everyone

I need to write a laboratory log. This is the first time I do this and I do not even know what it is or how we're supposed to write it. Could anyone please help and if possible show a sample?

Thank yo

ehd123   1045   7 Replies

padre

Data Normalization

Data Normalization

I'm plotting a graph with one of the axis being concentration which has a range of 160 - 0.04 ppm and 0 ppm. How would you normalize the axis/data since log cannot be used (since I'm considering 0 concentration as well)?

micro   643   7 Replies

padre

Physio Ex 9.0 Exercise 3 Review Sheet Neurophysiology of Nerve Impulses

Physio Ex 9.0 Exercise 3 Review Sheet Neurophysiology of Nerve Impulses

Hey everyone! I'm new to this so hopefully these questions haven't been posted before. I tried looking around for them and couldn't find them so if anyone has seen them, a link would be appreciated. Thank you :-)

My question

ranatomy   34790   7 Replies

GavinTwee10

PhysioEx 9.0 Exercise 3 Activities 1-9

PhysioEx 9.0 Exercise 3 Activities 1-9

Hi all,

I am looking to cross check many answers for all of the Activity questions in exercise 3. I haven't answered these questions from activity 8.

8.1  If you added more sodium to the extracellular solution, could

tiffad16   22915   7 Replies

doseofmegan

EXERCISE 4: Endocrine System Physiology

EXERCISE 4: Endocrine System Physiology

Can someone please help me with these.

EXERCISE 4:  Endocrine System Physiology

1.   The baseline metabolic rate (BMR) of the normal rat was approximately ________ ml O2/kg/hr.

2.   True or False:  The BMR o

cphnry   11558   7 Replies

star

Titrations and Natural Acid/Base Indicators

Titrations and Natural Acid/Base Indicators

Lesson 6 Lab: Titrations and Natural Acid/Base Indicators


Begin by viewing the following Thinkwell videos

15.1.7  CIA Demonstration: Titrations
11.2.2  CIA Demonstration: Natural Acid-Base Indicators

shirokyv   5559   8 Replies

padre

How to separate bacteria from eukariotic grinded tissue in liquid medium?

How to separate bacteria from eukariotic grinded tissue in liquid medium?

I have a liquid medium which contains a grinded eukariotic tissue and the bacteria that I want to separate from it in order to perform a DNA extraction. As the tissue particles are quite small, I can't remove them manually.

How can I

elsoja   1183   8 Replies

MorgsMidae

Gel Problem

Gel Problem

I tried to do an SDS-PAGE gel but after pouring the separation gel, this is what I got:




When I poured

micro   878   8 Replies

micro

Reading the electrophoresis gel for the enzyme Hind III and Bgl II

Reading the electrophoresis gel for the enzyme Hind III and Bgl II

Can somebody show me how to read the electrophoresis gel for the enzyme Hind III and Bgl II. The distance migrated in mm.
Size/Distance Migrated (mm)
23kb/?
9.4kb/?
6.6kb/?
4.4kb/?
2.3kb/?
2.0kb/?
0.6kb/?

linda   1921   8 Replies

duddy

physio ex 8.o cardovascular Dynamics activity 8

physio ex 8.o cardovascular Dynamics activity 8

Hi can anyone help me with these questions
Activity 8
Let’s declare the value you just obtained to be the “normal” flow rate for the purpose of this exercise.
Now decrease the right flow tube radius to 2.5 mm, and run another trial. H

Nanny4242   8185   8 Replies

bio_man

3T3 l1 cell differentiation culture

3T3 l1 cell differentiation culture

the fat accumulation is not enough after differentiation culture, can someone share the experience the culture experience?

Jamesmy   967   9 Replies

bio_man

Bacterial Quantities

Bacterial Quantities

When a protocol instructs to transfer 10 mL of bacteria, what does it mean exactly? I imagine it is being assumed that bacteria is cultured in broth but then again, how is 10 mL a quantity for bacteria? Shouldn't the optical density be stated? I

micro   1127   9 Replies

mikael

PhysioEx 9.0 Review Sheet Exercise 6 Questions

PhysioEx 9.0 Review Sheet Exercise 6 Questions

PhysioEx 9.0 Review Sheet Exercise 5 Questions


I noticed that several people asked for these questions and answers, so I compiled a list of all the questions along with all the answers I had available to me.  Please feel free to

Serendipityou   112669   9 Replies

hammondgirl

physioEx 8.0 exercise 7 actvity 1 #6

physioEx 8.0 exercise 7 actvity 1 #6

I really need the answer to Activity 1 Measuring Respiratory  Volumes  #6
Compute the minute respiratory volume (MRV) using the following formula
MRV = TV  X  BPM (breathes per minute)
 MRV____ml/min

jennE   9468   10 Replies

duddy

Measuring Cortisol and Adrenocorticotropic (ACTH) Hormones

Measuring Cortisol and Adrenocorticotropic (ACTH) Hormones

I need some help with the exercise 4 of the physiolab 9.0. Anyone have any clues??



ACTIVITY 1:  Metabolism and Thyroid Hormones – Part 1   Answers
1.   The baseline metabolic rate (BMR) of the normal rat was approximately

StudleyMcgee   8965   11 Replies

dooer

Washing Cell Pellet

Washing Cell Pellet

When it comes to washing a bacterial cell pellet with saline or PBS, if the protocol doesn't specify the quantity, what's a typical reasonable quantity?

micro   5752   12 Replies

micro

Lysis buffer preparation

Lysis buffer preparation

I am following a protein extraction protocol which suggests a lysis buffer with the following components:

- 140 mM NaCl
- 2.7 mM KCl
- 10 mM disodium hydrogen phosphate
- 1.8 mM potassium dihydrogen phosphate
- pH 7.3 (

micro   2492   12 Replies

Alexx

Even More Human Anatomy Exercises

Even More Human Anatomy Exercises

I am posting some of my completed exercises from the lab manual Human Anatomy Laboratory Manual with Cat Dissections (6th ed.) by Elaine Marieb and Susan J. Mitchell. I will warn you ahead of time some of the s

zanydelight69   4384   12 Replies

rebeccasoung

Physioex 8.0 exercise 4

Physioex 8.0 exercise 4

Does anyone know where i can find an answer key this exercise is so confusing!

gee.amanda   13808   12 Replies

duddy

I-P 10 Nervous System II A&P Questions

I-P 10 Nervous System II A&P Questions

Hey so I am new to this and am running very late on this assignment bc of 2 online tests I am having to take OUT OF NOWHERE tonight! Long story short idk what I am doing on here or how it works. But I really need a good grade on this. Heck I'd e

Snapka72   27132   13 Replies

Loghann\'s_mommy

Physioex 8.0 Exercise 3 Activity 8

Physioex 8.0 Exercise 3 Activity 8

Hoping someone can assist -
The final question in this Activity asks what is the main reason for differences in velocity between myelinated and unmylinated nerves?

Any help would be much appreciated!
Thanks!

MJW   12611   13 Replies

azazael

Identification of Serum Glcoprotein by Polyacrylamide Gel Electrophoresis

Identification of Serum Glcoprotein by Polyacrylamide Gel Electrophoresis

Can anyone please help me with these lab questions?
These are questions from the lab called: Identification of Serum Glcoprotein by Polyacrylamide Gel Electrophoresis and Albumin Western Blotting.

1. Describe the results of your Coom

12

queenhoa   4044   15 Replies

sinemsi

Aggregation of Bacteria

Aggregation of Bacteria

Why does ammonium sulfate aggregate bacteria in the SAT (salt aggregation test)?

12

micro   1655   17 Replies

micro

PhysioEX exercise 3 Help?

PhysioEX exercise 3 Help?

Anyone know the answers to exercise 3, activities 6, 7 and 8?

12

adr1e   17819   21 Replies

alymag912

General and Special Senses Lab Help Please(Kober lab 4015)

General and Special Senses Lab Help Please(Kober lab 4015)

Hi all this is from the Kober Lab for A&P 2 or the bridge course. I don;t have a friend to do these things with, so I'm just researching for those. Once I finish, I plan on posting what I got, please do the same if you have this class. I neve

123

monroe025   11945   30 Replies

Nicoleg