Upper-Year Courses

Describe your four tracings and explain what has happened in each of them.

Describe your four tracings and explain what has happened in each of them.

I am stuck on just a few questions and wondered if anyone could help me out.

Activity 3 question: An individual muscle fiber follows the all-or-none principle—it will either contract 100% or not at all.  Does the muscle we are working

sunshine   1610   N/A

sunshine

What is the relationship between nerve size and conduction velocity?

What is the relationship between nerve size and conduction velocity?

I have finished the lab but am stuck on the last 3 questions in the activity 8.

5. What is the relationship between nerve size and conduction velocity?  What are the physiological reasons for this relationship?
I kno

havoc-covah   2539   N/A

havoc-covah

PhysioEx 8.0 exercise 4

PhysioEx 8.0 exercise 4

Looking for key to exercise 4 activity 5-8.  Must grade papers for instructor tonight, thank you for any help possible.

tigger too!   1959   N/A

tigger too!

PhysioEx 18B Solutions

PhysioEx 18B Solutions

Hey there, does anyone have the solutions to PhysioEx 18B Neurophysiology of Nerve Impulses? I've done the questions but I wanna check them over before I hand it in so I can make sure I do well on it. It's from the A&P lab manual. Thank

ErikIsAHuman   2603   N/A

ErikIsAHuman

In the experiment, explain what happened to active force as the ‘voltage’ increased? As it

In the experiment, explain what happened to active force as the ‘voltage’ increased? As it

Hello there!
  I just completed activities 6-8 in exercise 2 of the Phsyio Ex 8.0 book, and my professor wants me to to be able to answer some questions related to the experiments.  I answered most of them, but I'm not entirely su

Kate   7062   N/A

Kate

Human Anatomy Exercises Post 6

Human Anatomy Exercises Post 6

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   1385   N/A

zanydelight69

Help with Exercise 3 Neurophysiology of Nerve Impulses please?

Help with Exercise 3 Neurophysiology of Nerve Impulses please?

Activity 2 Q 3. Identify which of the stimulus modalities induced the largest amplitude receptor potential in the Pacinian corpuscle. How well did the results compare with your prediction?

A2 Q4. Identify which of the stimulus modalities

HollyEV   7053   N/A

HollyEV

Molecular biology of the cell study guides

Molecular biology of the cell study guides

Does anyone know where i could find study guides to Molecular biology of the cell by alberts, et al?

forsheyc1   2384   N/A

forsheyc1

what would cause the different migration rate between each wells in agarose gel electrophoresis?

what would cause the different migration rate between each wells in agarose gel electrophoresis?

I have been having this trouble. DNA sample travels at different rates between different wells but I know they have the same size. The wells toward the middle of the gel always travel slower and the bands across the gel look like a rainbow shape. It

flowe12   1471   N/A

flowe12

Can pGEM-T Easy Vector JM109 cells take up multiple copies of the Plasmid?

Can pGEM-T Easy Vector JM109 cells take up multiple copies of the Plasmid?

I am using JM109 cells and the pGEM-T easy vector system II to clone a mixed microbial community for sequencing and I need to know whether a sinle copy or multiple copies can be taken up by each competent cell because this will impact on my ability t

!JRon@n   900   N/A

!JRon@n

Calculating GFR

Calculating GFR

I need to calculate GFR using creatinine clearance and MDRD equation. All the data I have is two absorbances for a standard (start = .321) (stop = .358) and two absorbances for urine (start = .288) (stop = .456).  The urine volume was 230 mL.&nb

guitargirl0812   1069   N/A

guitargirl0812

Formulation of a questionnaire based on Birth Order and Coping with Stress

Formulation of a questionnaire based on Birth Order and Coping with Stress

Pleasant Good Day to All,
I am doing my Thesis on the topic Birth Order and Coping. I am in the process of trying to put a questionnaire together that helps match my independent and dependant variables: Ordinal Position, Archetypical Profile, D

Rhyanbeau   835   N/A

Rhyanbeau

TTEST calculations help!

TTEST calculations help!

Hi there, I had generated a knockdown cell pool using shRNA against my target gene and control. i then subject these cells to the same conditions (DNA damage, etc).

I run experiments in triplicate usually, and then generate them independen

mm123an   2380   N/A

mm123an

Design an experiment outlining your techniques that will analyze the temporal expression pattern of

Design an experiment outlining your techniques that will analyze the temporal expression pattern of

Design an experiment outlining your techniques that will analyze the temporal expression pattern of a gene (gene X - mRNA expression) and its protein localization during gastrulation in three different organisms.
Please state the organisms you a

gkor29   3148   N/A

gkor29

Expression data - how to deal with it?

Expression data - how to deal with it?

Hello dear forum
I am working currently with the expression analysis of various genes by Affymetrix microarray chips. Here I come to terms with which I unfortunately can not do much.

In one illustration the absolute expression is spec

Jaccy   4562   N/A

Jaccy

How to calculate the stock material in PCR?

How to calculate the stock material in PCR?

Hi! I have a problem with filling this PCR table. Can anyone help me, please?

notimp   3451   N/A

notimp

please write a full discussion in this H Nmr and explain each signal

please write a full discussion in this H Nmr and explain each signal

I need help on H NMR ,i have to writea discussion on this specturm,I know the structure of product is D- glucose, but i could not write a discussion on it. Please explain everythingabout theses spectrum and how each signal related to the D- Glucose.

Amin.noorian   1246   N/A

Amin.noorian

Difficulty to come to a cunclusion from my SDS-PAGE gel electrophoresis results.

Difficulty to come to a cunclusion from my SDS-PAGE gel electrophoresis results.

In class I did a sds-page electrophoresis of e.coli expressed in four different sugars; Frucose, Arabinose, Glucose and Galactose, all in a concentration of 30 µl. When looking at my sds-page result, the four different samples seem to express the sam

Woahscience   2625   N/A

Woahscience

What does it mean by induced/uninduced cultures?

What does it mean by induced/uninduced cultures?

When growing recombinant proteins I used a uninduced control culture and a auto induction medium in my production culture.

what does it mean by induced/uninduced

GCUQMU   1321   N/A

GCUQMU

How does the electronegativity of a metal affect the activity of catalase?

How does the electronegativity of a metal affect the activity of catalase?

   Without any further ado, I have a problem concerning my lab experiment. The research question about the topic of enzymes with which I came up (the shortened version of it is the title) is the one that I found the most amusing and interesting. So I w

Malefactor   1100   N/A

Malefactor

Testing Cancer Cells ?

Testing Cancer Cells ?

Hi,

I would like to test cancer cells. Practical Tests.
I can imagine to run some tests from cancer cells of a mouse.
Isolating them in a petri dish and testing different substances and reactions on them.

Are

remoz   926   N/A

remoz

Why heat can not reverse my formaldehyde cross-linking product

Why heat can not reverse my formaldehyde cross-linking product

I was trying to pull down some associated proteins with my bait protein by formaldehyde cross-linking. my bait protein is 3XFLAG-tagged. So my final step is to elute my proteins out by Low pH glycine. Then, the eluted protein was split into two sampl

wuchenggang   1547   N/A

wuchenggang

Micronucleus testing, stain too dark?

Micronucleus testing, stain too dark?

Hello there!  First time posting. 

In any case, we did a micronucleus test on rat bone marrow in class this past week.  I followed the directions to a T, and timed my staining to the second, with my slide in the Wright st

Wifey2myWifey   857   N/A

Wifey2myWifey

-20 microbial glycerol stocks

-20 microbial glycerol stocks

hello,

I am keeping microbial stocks in 25% glycerol at -20 (-80 not available) for a few months. but I am noticing that the stocks are remaining liquid. will this affect the viability of the cells ? if so what can I do without repeating t

tahah   1354   N/A

tahah

During chlorophyll biosynthesis, which wavelength of light, if at all, would produce the optimum ...

During chlorophyll biosynthesis, which wavelength of light, if at all, would produce the optimum ...

I am performing an experiment of chlorophyll biosynthesis, so had a question about whether during the reduction of the D ring by NADPH in chlorophyll biosynthesis, is the process affected by different wavelengths of light. It will also be very helpfu

jashdhill   1073   N/A

jashdhill

(surface plasmon resonance) which method are helpful for reduce negative curve?

(surface plasmon resonance) which method are helpful for reduce negative curve?

1X tbs w/ sample
(1X TBS buffer : 90% DW+10% 10X TBS)

<1>
sample 100ul(diluted at DW until 1000X)
DW 800ul
10X TBS 100ul

it's my co-worker's opinion. he said "sample in DW, then when you

Koreanraichu   793   N/A

Koreanraichu

Delay Artefacts In Nerve Conduction Velocity

Delay Artefacts In Nerve Conduction Velocity

I was shown a demonstration on estimating peripheral nerve conduction velocity in a healthy subject and have been asked about to look up about delay artefacts which limits the accuracy of the values. There is apparently two of these but I have not be

Archer502   534   N/A

Archer502

exercise 11 in physioEX 8.00

exercise 11 in physioEX 8.00

Can you please give me answers for activity 3,4 and 5 in exercise 11

helen237   15823   1 Reply

duddy

Describe the significance of using 9mM sodium chloride inside the cell and 6 mM

Describe the significance of using 9mM sodium chloride inside the cell and 6 mM

I am struggling with my PhysioEx. 8.0.  On the review sheets for exercise 3. I am in need of help for the following questions. 4. What is the difference between membrane irritability and membrane conductivity? 5. Why does a nerve's action p

whitecaddy26   11823   1 Reply

boeing

PhysioEx 8.0 Solutions.

PhysioEx 8.0 Solutions.

If you are not a "contributing member" and want the ALL of the answers and you want them now, then check out these 2 posts:

https://biology-forums.com/index.php/topic,19

mb2005   2852   1 Reply

mb2005

physioex 8.0 exercise 7 activity 6

physioex 8.0 exercise 7 activity 6

How much of an increase in FEV1 do you think is required for it to be considered significantly improved by the medication? 

kpx311   5394   1 Reply

bio_man

PhysioEx 8.0 exercise 2

PhysioEx 8.0 exercise 2

Explain how wave summation and recruitment are achieved in vivo.

For Activity 6, explain how you were able to achieve smooth contraction at a given force level.

st123   3812   1 Reply

duddy

physioex 8.0 lab 5 activity 6

physioex 8.0 lab 5 activity 6

I need help understanding this


Applying the simulation outcomes to the human heart, predict the effect of increasing the stroke volume on cardiac output (at any given rate).

lisagregory   3733   1 Reply

duddy

physioEX exerices #8

physioEX exerices #8

can you help with exercise #8

warren06   1299   1 Reply

biolove

activity 6

activity 6

Did the depth of the breathing pattern change during rebreathing? (Carefully examine the tracing for rate and depth changes; the changes can be subtle). Explain your observations.

liltwinkle20   6080   1 Reply

bio_man

PhysioEx Exercise 7

PhysioEx Exercise 7

I did it here before I just don't remember where I went, does anyone know where I can get the link to to do the actual lab myself? I did it on a past exercise and I got the link off this website. Does anyone know or have the link for Exercise 7?

boobopgrl   2231   1 Reply

duddy

PhysioEx 8.0 Endocrine

PhysioEx 8.0 Endocrine

Hello,
PhysioEx 8.0 Exercise 4  need assistance, especially in  activity one.

jujubes   1824   1 Reply

bio_man

Physio Ex 8 Respiratory Mechanics (Ex 9 or chap 22)

Physio Ex 8 Respiratory Mechanics (Ex 9 or chap 22)

Any help at all would be a godsend.  Activity  6

clayton   2198   1 Reply

bio_man

physioex 8.0 human physion

physioex 8.0 human physion

i need help on lab 4 endocrine system review 4 question number 7

ldeeley   1046   1 Reply

simonesosexii

Physo Exercise 9 Renal

Physo Exercise 9 Renal

Can some one help me with this question...(I saw it posted but there was no answer so sorry if i did this wrong)
What is the maximum osmolality of the interstitial fluid? 

serenity2870   1119   1 Reply

duddy