Introductory Courses

Writing a laboratory report (Detailed Explanation)

Writing a laboratory report (Detailed Explanation)

This is a great tutorial on how to write a lab report if you're just starting off in your studies...

See attachment

Bio_man

bio_man   5636   1 Reply

finndog32

How does air pollution change the natural balance in the ecosystem (carbon, water, and nitrogen cycles)???HELP

How does air pollution change the natural balance in the ecosystem (carbon, water, and nitrogen cycles)???HELP

How does air pollution change the natural balance in the ecosystem (carbon, water, and nitrogen cycles)???HELP

#8   823   1 Reply

_vibram_

How low ratio A260/230 can effect ligation and how can I increase it?

How low ratio A260/230 can effect ligation and how can I increase it?

probably I should add that these DNA samples were gel extracted using column, so there is absolutely impossible that they are protein contaminated...

0103325   474   1 Reply

buk280forlife

The DNA concentration of purified DNA is important to molecular biology because?

The DNA concentration of purified DNA is important to molecular biology because?

How does estimating the concentration of purified DNA correlate with DNA purification?
So I just finished a molecular lab and we purified our given plasmid DNA which was E. Coli then we ran a gel and from that gel we had to estimate the concent

0mg_Its_Sabby   1541   1 Reply

yukifangfang

DNA REPLICATION

DNA REPLICATION

Can you help me out with how RNA forms out of DNA?

Abazele   1306   1 Reply

germ

Scientific introductions

Scientific introductions

I have to write a scientific introduction for Biology. It is on wolf spiders predatory habits and if they are affected by moonlight. My teacher told me that science has a whole nother language! I have no idea how to write a scientific introduction. P

Abby1234567890   464   1 Reply

padre

Lab Report help using SPSS

Lab Report help using SPSS

Hi,

Could someone help me with a lab report I'm currently working on, Its about time management and I have to run a exploratory factor analysis and multiple linear regression. I have variables like gender and general life satisfactio

Acevill   2464   N/A

Acevill

How to do statistics for a lab?

How to do statistics for a lab?

I have never done statistics or lab before! So, my professor gives just a packet to do for class. 

My basic question is how do I do unpaired t-test, a paired t-test, and linear regression for descriptive statistics? I need to have

acorneee   1741   4 Replies

acorneee

Lactose vs other solutions in osmosis - why difference

Lactose vs other solutions in osmosis - why difference

In my lab I found that potatoes soaked in lactose had a positive growth in mass, while the other solutions (sucrose, glucose, fructose and maltose) had a negative growth. Any suggestions?
Mol mass was calculated correctly with the same amount of

anneheey98   1031   1 Reply

habiba

Osmosis lab help - results are odd

Osmosis lab help - results are odd

In my lab I found that potatoes soaked in lactose had a positive growth in mass, while the other solutions (sucrose, glucose, fructose and maltose) had a negative growth. Any suggestions?
Mol mass was calculated correctly with the same amount of

anneheey98   674   1 Reply

bio_man

Excel Trouble

Excel Trouble

So, I have data  from 2 experiments that I need to graph in excel. Both experiments have data for time and absorption measured over 700 seconds. Basically, I need to take these tables
T         A
0      100

anonfawkes   611   2 Replies

sarah.brush

ap bio

ap bio

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

apbio64   800   1 Reply

moon_stars9700

How to identify which sweetener is which given unlabeled sweetener packages?

How to identify which sweetener is which given unlabeled sweetener packages?

'm provided with unlabeled packets of sweeteners. Any chemicals I need are provided. I have only a microscope, a pipettor, a balance, a spectrophotometer,a hot plate, and a water bath. I know what substances are being tested and their ingredient

arooj1a2b3c   1141   2 Replies

arooj1a2b3c

Web D241

Web D241

 Please complete the following short answer questions with code snippets as well as paragraphical responses. This assignment should not be an exercise in copy and paste, but an assessment of your comprehension and evaluation of the course materials.

asimas55   3700   1 Reply

padre

is it protocol for every patient in the er to have blood drawn?

is it protocol for every patient in the er to have blood drawn?

My son was transferred from one er to another for admit for pneumonia. Labs were done at 11:00am at the first hospital but never at the second even after admit to the floor.  Is this normal?

Askelto2   671   4 Replies

fish44447

help with microbiology lab?

help with microbiology lab?

We exposed two plates to UV light. The 10^0 plate was exposed to UV light for 30 seconds. The 10^-1 plate was exposed to UV light for 25 seconds. Why did the 10^0 plate require a longer exposure time than the 10^-1 plate?

askforhelp   441   2 Replies

MicroMan84

When performing a standard plate count, why are counts reported as colony forming units (CFUs) rathe

When performing a standard plate count, why are counts reported as colony forming units (CFUs) rathe

when performing a standard plate count, why are counts reported as colony forming units (CFUs) rather than cells?

askollmeyer   502   1 Reply

firemonkey

What other test/s should be performed in order to confirm the presumptive "S.aureus colonis" from ...

What other test/s should be performed in order to confirm the presumptive "S.aureus colonis" from ...

Guide questions:


1.What other test/s should be performed in order to confirm the presumptive "S.aureus colonis" from the Mannitol Salt Agar [MSA] plate?

2.When is a differential medium also a selective medium and vice versa?

3.How can organisms t

askollmeyer   457   1 Reply

Asmaa

Removing C. elegans from e. coli gel

Removing C. elegans from e. coli gel

In my lab we have to use a platinum wire to transfer C. elegans (microscopic worms) from one petri dish with gel to another one for mating and phenotype determining purposes. Has anyone done a similar lab and can offer any advice for transferring the

azahoran   854   2 Replies

doubleu

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   6389   5 Replies

duddy

PhysioEx 8.0 Review Sheet

PhysioEx 8.0 Review Sheet

Please, I need help witn the Review Sheet - Cell Transport.:  3, 4 and 5

12

Becky001   50933   21 Replies

Courtney134

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   12133   3 Replies

berfrye

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

Yeast fermentation lab report

Yeast fermentation lab report

Does anyone know where I can get lab report help?  I have 2 reports due on Friday and no clue how to get them done.  Any advice would be greatly appreciated!

BioQueen   2153   6 Replies

sharper7

How to sterilize PLASTIC petri dish

How to sterilize PLASTIC petri dish

Hi guys, I just encounter a question about sterilization.

How to sterilize PLASTIC petri dish.
Yea, It's in PLASTIC but not glass.
I'm wondering if the plastic will melt if the dish is put in the oven or autoclave.

bio_beginner   6189   4 Replies

bio_man

AP exam released

AP exam released

Want to have some released exams especially multiple choices for practice. It would be great if there are other subjects including US History, Physcology, Environemntal Science, Human Geography. Thanks.

bmzheng   2169   2 Replies

bmzheng

nickel column gel

nickel column gel

Why is it that bigger molecules for the protein gel appear at the bottom (opposite of the DNA gel)?

bobaholic   2060   7 Replies

bio_man

sonicator

sonicator

Why do we put headphones for the sonicator?

bobaholic   315   1 Reply

flipinized007

liquid nitrogen

liquid nitrogen

Why do we have liquid nitrogen proteins?

bobaholic   397   1 Reply

bio_man

gel shifts and biochemical assays

gel shifts and biochemical assays

I do not get what's the point of these techniques besides getting the know the function of the RNA?

bobaholic   434   1 Reply

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   18291   6 Replies

ayoke rauf

What are some easy high school level science experiments?

What are some easy high school level science experiments?

My teacher just assigned an experiment for us to do and it's due next Monday. What are some easy yet high school leveled experiments I can finish in 1-3 days? I've been looking around online but all the experiments I find require an acid or

boll   1031   1 Reply

savio

i have physioex 9.0

i have physioex 9.0

I'm struggling with the review sheet 1 Cell Transport mechanisms and permeability.
Its been a tough week with recent deaths in my family I cant seem to think of the answers that I want to say.
Can anyone help me?

bradybelle221   1377   3 Replies

qew

How much of the depth referenced in Question 7 was glacial ice with plastic prop

How much of the depth referenced in Question 7 was glacial ice with plastic prop

Lab Exercise: Glacial Features in Yosemite Valley.  Record your answer to Lab Exercise, Question 9.

How much of the depth referenced in Question 7 was glacial ice with plastic properties?

bshimek   1154   1 Reply

bio_man

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

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

If you have done the pineapple in jello ENZYME lab..HELP!?

If you have done the pineapple in jello ENZYME lab..HELP!?

what's supposed to happen?

lol i did my experiment and i didnt notice a change at all?

what's supposed to HAPPEN!?!?!?

buddizzle   921   1 Reply

lexman

biology enzyme question lab?

biology enzyme question lab?

Your data sheet for ten different experiments. (Think about this question: What did you observe for the plot of product concentration versus time? Is this what you expected? Explain your answer.)

This is the question. What happen is when the enzyme

buddizzle   543   2 Replies

budi

the enzyme lab?

the enzyme lab?

I have few questions..

how can i explain the differences in the reaction rates..
and can H2O2 be broken down by catalysts other than thoses found in living systems..?
lastly, what's the difference between the rates of reaction with potato as compare

buddyhal   395   1 Reply

smluke2000

In a laboratory experiment, a heat engine takes in 200 J of heat and does 60 J of work by expanding in a rever?

In a laboratory experiment, a heat engine takes in 200 J of heat and does 60 J of work by expanding in a rever?

In a laboratory experiment, a heat engine takes in 200 J of heat and does 60 J of work by expanding in a reversible process. What is the change in internal energy of the engine during this process?
we have a whole new set of problems due monday and

buddysp_vn   636   2 Replies

nateybbb