Introductory Courses

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   35748   7 Replies

bio_man

Microbiology

Microbiology

what is the central dogma of genetics?

shahabk87   1338   3 Replies

walid

How does gel electrophoresis work?

How does gel electrophoresis work?

How does gel electrophoresis work? I know the electrophoresis separate DNA into fragments, which causes the DNA to ne denatured? But not getting the concept?  What is the purpose of restriction enzymes have a role?
Thanks for any help

Only   11121   6 Replies

mam75

PopGen Lab - need help

PopGen Lab - need help

50% brown, 25% white and 25% black; equal proportions of ea tree type, one tree stand, 4000 carrying capacity, random mating, disaster frequency "never".
Based on these conditions, does ea moth genotype have an equal chance of surviva

overthehead   6574   12 Replies

mam75

anatomy& physiology coloring workbook question

anatomy& physiology coloring workbook question

Hi guys!  I need help with this problem from my anatomy & physiology coloring workbook:  figure 3-4 shows a semipermeable sac, containing 4% NaCl, 9%glucose, and 10% albumin, suspended in a solution with the following composition: 10% N

jjlo77   5035   2 Replies

jjlo77

I need help with lab experiment

I need help with lab experiment

I did an experiment looking at the effect of the structure of substrate on the rate of the reaction. What would be the best way to label my chart?

Also can someone give me an idea on how to ans

mzhottchoc   2381   8 Replies

bio_man

pollinators

pollinators

any one has good articles on plant pollinators?

vbathala@gma   1179   3 Replies

bio_man

physioex 8.0 exercise 4 review sheet

physioex 8.0 exercise 4 review sheet

 can someone please answer the following questions from physioex 8.0 exercise 4 review ,page 59

3. what is the role of hypothalamus in the production of thyroxine and tsh

4.how does thyrotropin realeasing hormone travel from the

berfrye   12134   3 Replies

berfrye

Having trouble with Phsioex 8.0 human physiology excercise 4 activity 1-4

Having trouble with Phsioex 8.0 human physiology excercise 4 activity 1-4

Having trouble with Phsioex 8.0 human physiology excercise 4 activity 1-4

ns23   2551   4 Replies

lena213

effects of tylenol 3 on enzyme activity

effects of tylenol 3 on enzyme activity

What are the effects of Tylenol 3 (condine, caffeine and Acetaminophen) on the activity of catalase the enzyme?

123

buddah   6638   28 Replies

duddy

Physioex 8.0 Renal System

Physioex 8.0 Renal System

Help me please!!
Glomerular Filtration
Activity 1:  Effect of Arteriole Diameter on Glomerular Filtration

1.   Compare this data with your baseline data.  How did increasing the afferent arteriole radius affect glomerular

lcv123   7751   3 Replies

duddy

PhysioEx 8 Exercise 1-

PhysioEx 8 Exercise 1-

Hello,

I was looking for answers to PhysioEx Exercise 1.  I do not see any questions or answers for the complete exercise.

lws   24478   5 Replies

biolove

What is "ART" in micropipetting?

What is "ART" in micropipetting?

What is "ART" in micropipetting?! What does it stand for?

spliceofslife   1767   5 Replies

Nikkilg

components of a microscope

components of a microscope

Hello I need to know the function of the following components of a microscope, however I have tried google, and it probably isnt the most reliable resource.

reflecting surface
field stop
mechanical tube

Cheers.

quantumX   1141   1 Reply

sarah!

ap bio

ap bio

when did the college board change the ap bio exam from 120 multiple choice questions to 100?

apbio64   801   1 Reply

moon_stars9700

PhysioEx Exercise 3 Review Sheet

PhysioEx Exercise 3 Review Sheet

Can anyone help with the Review sheet on pg 41 and 42 for exercise 3 ? I have did the labs but I am new to this PhysioEx and I'm not sure about the answers! Thank You!!

bubear   6965   4 Replies

naj1362

Help with RT-PCR!

Help with RT-PCR!

I'm doing RT-PCR for the first time so the professor suggested I just look for RPL-32, a housekeeping gene in human mast cells. 

The first time I went through the procedure, I got no bands on my gel, just the 100 base pair ladde

Polymorphism   1158   1 Reply

sarah!

Physioex 8.0 Lab 2

Physioex 8.0 Lab 2

Can someone help me just with the summary of the data? I have all the questions answered just need the summeries!!

Thanks in advance~

marie03   2057   N/A

marie03

Photosynthesis Lab Questions

Photosynthesis Lab Questions

Hello again,

Writing a formal lab report on Photosynthesis and my hypothesis is lacking could use some pointers on how to word it rework it, a general comment to get me pointed in the right direction.  This is what I have and it does

Only   3470   3 Replies

duddy

Neurophysiology

Neurophysiology

I know what my instructor means, I just can't put it into the right words.

Describe the difference between slow oxidative, fast oxidative, and fast glycolytic fibers and their association with activity and athletes.

Describ

Tish046   1584   1 Reply

bio_man

PhysioEx 8.0 Lab 11 Exercise 1

PhysioEx 8.0 Lab 11 Exercise 1

I'm having trouble with the Blood Analysis lab can somebody please help me?

babygirl618   6390   5 Replies

duddy

biology labreport about sea urchins

biology labreport about sea urchins

 1) It is easy to see that starfish exhibit radial pentamerous symmetry. Sea urchins also exhibit the same type of symmetry. Given that sea urchins do not have arms, how can you tell they are radially pentamerous?

2)how do see urchins repi

NAZ   3461   1 Reply

duddy

Cellular respiration and fermentation

Cellular respiration and fermentation

Working on a lab report, about cellular respiration and fermentation and wondering if I got this right.  Insight or corrections appreciated or you can tell me to just start over if I have gone way off base. Thank you for any suggestions!

Only   3680   2 Replies

Only

colloid...what is it?

colloid...what is it?

what is a colloid?

this is what is says

A colloid is a stable suspension of fine particles in a liquid.

what do this means?


thanks
xoxo

nevada   1195   1 Reply

bio_man

Cell Metabolism

Cell Metabolism

Can someone explain the similarities and differences between cellular respiration and photosynthesis. I understand they both involve chemiosmosis but i don't understand how these processes differentiate in establishing a proton gradient. I would

pumpkinbread   1497   1 Reply

bio_man

Examine the leaves and flowers

Examine the leaves and flowers

Based on the pattern of leaf venation, classify your plant as a monocot or eudicot; indicate your classification in Table 3. Then based on your classification, predict the type of root structure for your chosen plants; indicate the root type (fibrous

NAZ   1568   2 Replies

lewis

Answer the following questions about planarians

Answer the following questions about planarians

1  Define cephalization, and briefly describe its importance in the evolution of bilaterians

2  Why is the nervous system of Planaria considered more advanced than that of Cnidarians?

3  Name one similarity

NAZ   6094   1 Reply

bio_man

some questions about sponges...

some questions about sponges...

1.List three characteristics of sponges that illustrate that they are an early branch of the animal kingdom.
2.If sponges are sessile, how are they able to disperse?
3.Which characteristic of sponges closely links them to choanoflagellates?

NAZ   3525   2 Replies

bio_man

PhysioEx Exercise 1(5b) Review Sheet

PhysioEx Exercise 1(5b) Review Sheet

Hello, I have noticed that there appears to be 2 different Worksheets and Review Sheets for each Exercise. In Fact in my lab manual what everyone refers to as Exercise 1 is actaully Exercise 5b. I have completed the lab worksheet and I am working on

boeing   18293   6 Replies

ayoke rauf

Genetics Lab Report

Genetics Lab Report

Lab Report

The Lab Report contains special characters that may be difficult to enter into the online document. You may complete the Lab Report by printing it and writing directly on it, or you may type the information into the document. Yo

supermario   4709   1 Reply

star

how to write a lab report

how to write a lab report

hi-
i have to conduct a experiment for bio class
and write a laboratory report.
i dont know how to. the experiment is "does sugar dissolve quicker in hot or cold water"?
the hypothesis is yes.

what do i

nevada   3524   8 Replies

duddy

PhysioEX 8.0 Exercise 4 - Activity 1-8

PhysioEX 8.0 Exercise 4 - Activity 1-8

Need some assistance with these. No need to post activity 5 because its already here.

mb2005   22194   6 Replies

boeing

Plant Physiology Lab

Plant Physiology Lab

This was the final report for this lab, maybe others could benefit from it.
If you have any questions, or if you see some false or inaccurate information plz tell me.
Im not so sure as to what is the purpose of some steps in the experiment

karim89   3063   10 Replies

bio_man

Cell Transport Mechanisms and Permeability... Exercise 1

Cell Transport Mechanisms and Permeability... Exercise 1

Need help with PhysioEX: Cell Transport Mechanisms and Permeability... Exercise 1

Activity 1 through 5...

Activity 1: Simulating Dialysis (Simple Diffusion) (pp. 2–4)
Activity 2: Simulating Facilitated Diffusion (pp.

biolove   13535   3 Replies

biolove

Questions on Synthetic Human Insulin.

Questions on Synthetic Human Insulin.

1. Why can't bacteria produce the final insulin peptide from a single gene for preproinsulin?

2. Are the genes for human insulin on the same chromosome or on different chromosomes?

3. Insulin binds to insulin receptors, a t

LCrunkpool   2020   2 Replies

James Carl

Osmoregulation Question. Please Help.

Osmoregulation Question. Please Help.

1) Which of the following statements provides the physiological basis for linking osmoregulation with excretion of nitrogenous wastes.
a) Ammonia and urea are released from the breakdown of amino acids in most excretory systems
b)There are

ytarmago   1920   3 Replies

bio_man

Is there such a thing as organic molecules? (read message before answer)

Is there such a thing as organic molecules? (read message before answer)

A organic molecule obviously consists of carbon. If it contained another substance such as nitrogen, wouldn't that make it a organic compound?

I ask this because my AP BIO book and other sources constantly mention organic molecules --

NeedsAPbiohelp   1170   2 Replies

sarah!

Lab exercize help

Lab exercize help

This is a laab assignment on what factors affect enzyme activity. and I am having trouble with the post lab.
A510 Readings after Adding 2 mL of Glucose Oxidase to Varying Concentrations of Glucose
We did 30 mg/dL, 15 mg/dL, 7.5 mg/dL, 3.75

oldcollegelady   1182   3 Replies

bio_man

DPIP (a blue dye), do I blank? It replaces NADPH in experiment .

DPIP (a blue dye), do I blank? It replaces NADPH in experiment .

DPIP (a blue dye) , do I blank?
-It replaces NADPH in experiment .
-It should turn blue to colorless when reduced in photsynthesis.
-When oxidized it is blue
hypothesize

gamingwings   1911   2 Replies

bio_man

Need help with substrate diffenition

Need help with substrate diffenition

In biochemistry, a substrate is a molecule upon which an enzyme acts.
Can anyone give me a definition even a non bio major can understand.
I think it mean the molecule in which the enzyme affects.... or does it mean the molecule in which th

gamingwings   976   1 Reply

bio_man