Upper-Year Courses

The Essential Cosmic Perspective 6th Edition

The Essential Cosmic Perspective 6th Edition

Does anyone have the answers for Chapters 11-18.  Question:  When I search for the answer to my question I get the message Download PDF Creator, but nothing is there.

Am I doing something wrong?  HELP!!!!!1

chamrock   2580   1 Reply

bio_man

in maintaining zero order for substrate in enzyme assay, how much substrate must be placed?

in maintaining zero order for substrate in enzyme assay, how much substrate must be placed?

is it 1) 10km or 2)10km or more

we had a test just now and its worth 5 marks..sheesh!

Illuminatus   827   1 Reply

leroy3

Would Biuret be a good reagent for an assay that is looking for hemoglobin in urine?

Would Biuret be a good reagent for an assay that is looking for hemoglobin in urine?

Would Biuret be a good reagent for an assay that is looking for hemoglobin in urine?

Midnightcharm   616   1 Reply

datoledo88

What is a protocol for a standard curve for a glucose assay?

What is a protocol for a standard curve for a glucose assay?

What is a protocol for a standard curve for a glucose assay?

tommyd   1670   1 Reply

illkidxy4

What are the most important controls for a CHIP assay?

What are the most important controls for a CHIP assay?

What are the most important controls for a CHIP assay?

asinger96   500   1 Reply

les4212

How do you interpret the spots in a CAT enzyme assay?

How do you interpret the spots in a CAT enzyme assay?

How do you interpret the spots in a CAT enzyme assay?

Asinense   617   1 Reply

les58mac

what is difference between an assay and a test?

what is difference between an assay and a test?

this was my viva question which i couldn't answer

tommytomz   447   1 Reply

irina

What is the chromophore in the Bradford protein assay?

What is the chromophore in the Bradford protein assay?

What is the chromophore in the Bradford protein assay?

LESHUDSON74   1976   1 Reply

asis

How do you do a colorimetric MTT assay?

How do you do a colorimetric MTT assay?

For figuring out how many cell deaths have occured

Midnightcharm   466   1 Reply

datoledo88

Is there such a thing as a viral plaque assay that uses mammalian cells?

Is there such a thing as a viral plaque assay that uses mammalian cells?

Is there such a thing as a viral plaque assay that uses mammalian cells?

lepurplebird   468   1 Reply

Illuminatus

Of the substances that diffused through the bag, did all of the molecules diffuse out?

Of the substances that diffused through the bag, did all of the molecules diffuse out?

We will dialyze a solution of glucose and starch to observe:
?? The directional movement of glucose and starch.
?? The effect of a selectively permeable membrane.
In this lab, we will be using an indicator to test for the presence of starch and gluco

tommy12   503   1 Reply

terramishu

Which of the following is true of an X-linked gene, but not of a Y-linked gene?

Which of the following is true of an X-linked gene, but not of a Y-linked gene?

Which of the following is true of an X-linked gene, but not of a Y-linked gene?

luckyday   620   1 Reply

bolbol

Shewanella Oneidensis Sonication

Shewanella Oneidensis Sonication

Hello,

I plan to use sonication to break up my Shewanella and E.Coli microbes into their various components. I was wondering if anybody knows of a website where I can see specific instructions on how to do this. The instructions should inc

KSci   699   1 Reply

duddy

Biotechnology - chapter 20

Biotechnology - chapter 20

whats the differences between bacteria express system and eukaryotic cloning and express system?

abertista   1927   1 Reply

habiba

Method for preparing a wet mount

Method for preparing a wet mount

What's the detailed procedure for preparing a wet mount for observing plant stems?

Anonymous   420   1 Reply

duddy

Why do you pour the ethanol SLOWLY in DNA extraction experiment?

Why do you pour the ethanol SLOWLY in DNA extraction experiment?

I am talking about the standard DNA isolation experiment from kiwis and onions.Protocol goes something like this (general and conceptual version follows)

1) Chop the kiwi/onion up finely and add it to a solution of NaCl and detergent

Gardenia   2144   1 Reply

bio_man

RNA isolation from brain sections

RNA isolation from brain sections

Hi,

I'm looking to isolate RNA from brain sections under two conditions. First are punches from fresh vibratome slices. I've been told that the time it takes to cut the sections and then punch them is too long for good RNA isolat

biomart   1314   1 Reply

rsb

How to use STEREOLOGY (optical fractionator) in image stacks (confocal microsc.)

How to use STEREOLOGY (optical fractionator) in image stacks (confocal microsc.)

Hi! I'm using stack images after confocal microscopy to measure 2 types of cells in mouse brain after status epilepticus. PV cells (red channel) and VVA cells (green channel). I also want to measure their co-localization. Which is the best way t

anikapl   1413   1 Reply

kconnors

how to dissolve uric acid?

how to dissolve uric acid?

Hi,
I want to dissolve uric acid ?. I need to dissolve uric acid for isolating uricase producing bacteria or uric acid utilising bacteria. when i prepare nutrient media with uric acid, it's getting sediment-ed down in conical flask...how to

barathvaj   3461   1 Reply

bio_man

Why did the PCR sample not show in this Electrophoresis?

Why did the PCR sample not show in this Electrophoresis?

Typical Bio lab... We transformed e.coli to having the pGreen gene and glowing in the dark. You'll see on the photo the first column we used a MWS and the second column was the pGreen +ampicillin mixture and we were able to isolate the gene to s

yetiintheback   956   1 Reply

rsb

Hormonal levels in fish

Hormonal levels in fish

Im studying a snapper, Lutjanus peru for my masters thesis
i have a lot information about many things of the fish, im working with broodstock born in captivity.
im trying to find out its hormone levels (E2, T and 11KT) before, during

Daniel from BCS   633   1 Reply

lribanda

How to tell if a person is AA, Aa, or aa using gel electrophoresis results?

How to tell if a person is AA, Aa, or aa using gel electrophoresis results?

What in particular do I have to look for to classify a person into a particular genotype? I have attached a picture of the results to make my question a little bit easier to understand.

tingc95   1736   1 Reply

Microbiojuan

Enzyme for the synthesis of L-ascorbic acid

Enzyme for the synthesis of L-ascorbic acid

I am doing some university research which requires an enzyme that can produce L-ascorbic acid as the end product. The problem is that my knowledge of biology is limited and I have no idea if there is one available that does this. I have searched the

Goosebay   1171   1 Reply

bio_man

what is the standard protocol to carry out alpha amylase inhibition assay?

what is the standard protocol to carry out alpha amylase inhibition assay?

Hi. I am currently working on alpha amylase inhibition assay using DNS reagent.
As the first step I am preparing the DNS reagent and testing it with glucose to ensure that the DNS reagent is prepared in a correct way.
After boiling the mixt

SMG   1069   1 Reply

bio_man

PCR REACTION

PCR REACTION

I accidentally used 10 ul of master mix/DNA solution instead of 20 ul. The PCR reaction is set to calibrate temperatures for 20 ul of solution. Will my DNA samples be denatured to a point where they can't replicate?

JFKgravy   850   1 Reply

padre

what is the standard curve finding concentration and absorbance

what is the standard curve finding concentration and absorbance

What is the standard curve finding concentration and absorbency

scwong   689   1 Reply

duddy

Multiplex pcr for methicillin resistant s.aureus

Multiplex pcr for methicillin resistant s.aureus

i am doing  multiplex pcr for MRSA strains in three groups I wanted to know the positive control or a standard that can be run in every set to assure that the pcr reaction has worked to optimal standardization.

pathak   1112   1 Reply

habiba

Why does frequency of Transduction rise to maximum then decline

Why does frequency of Transduction rise to maximum then decline

did an experiment where we tried to transduce a mutant gene into E.coli and wanted to see the effect that increasing the volume of Lysate (including bacteriophage) had on the number of transductants. the number of transductants rose as the volume of

kakalaka1   2039   1 Reply

bio_man

Trace element utilisation project.

Trace element utilisation project.

I have recently been set the task of carrying out a research project based on trace element utilisation. After countless hours reading into trace elements and how different species from the three kingdoms of life utilise these (transporter/user prote

PCRDON   1022   1 Reply

bio_man

In humans, what determines the sex of offspring and why?

In humans, what determines the sex of offspring and why?

In humans, what determines the sex of offspring and why?

luckyday   415   1 Reply

bolbol

When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation in

When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation in

When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red- and white-eyed flies. Remarkably, all the white-eyed flies were male. What was the explanation for this result?

luckyday   417   1 Reply

bolbol

Which statement below correctly describes the results?

Which statement below correctly describes the results?

A white-eyed female Drosophila is crossed with a red-eyed male Drosophila. Which statement below correctly describes the results?

luckyday   449   1 Reply

bolbol

What name is given to the most common phenotype in a natural population?

What name is given to the most common phenotype in a natural population?

What name is given to the most common phenotype in a natural population?

luckyday   392   1 Reply

bolbol

How are human mitochondria inherited?

How are human mitochondria inherited?

How are human mitochondria inherited?

luckyday   376   1 Reply

bolbol

Expressing two different membrane proteins on the same promoter?

Expressing two different membrane proteins on the same promoter?

How could I generate a stable mammalian cell line that expresses two different membrane proteins on the same promoter? I want to know what strategies I could take.

anonyvous   1083   1 Reply

dtimmons95

Does the pacinian corpuscle

Does the pacinian corpuscle

The olfactory receptor also contains a membrane protein that recognizes isoamyl acetate and, via several other molecules, transduces the odor stimulus into a receptor potential. Does the Pacinian corpuscle likely have this isoamyl acetate receptor pr

Charmon   552   1 Reply

bio_man

How to read bands from PCR product agarose gel electrophoresis

How to read bands from PCR product agarose gel electrophoresis

I am not quite sure what to make of my results.. I would like to say lane 5, 6, 7 are uncut DNA. But Im not sure im right.

lexxi00   593   1 Reply

bio_man

Formamide in hybridization buffer is w/v? or v/v?

Formamide in hybridization buffer is w/v? or v/v?

Greetings, good friday.

I have a question about hybridization buffer..

actually, you know, hybridization include salt(SSC), detergent(SDS), and formamide. but SSC is selling by stock sol(20X) so we inject when calculate diluted

Koreanraichu   673   1 Reply

doubleu

In microarray, target DNA are labeled?

In microarray, target DNA are labeled?

I know about microarray, after target DNA immobilized we inject labeled probe DNA..
I run this DNA both probe and target are oligonucleotides, but I cannot what are labeled.
only probe labeled and injected at hybridization step? or both p

Koreanraichu   608   1 Reply

thesurgeon

What purpose does the kaleidoscope marker serve in your coomassie-stained gel? If you were doing a ...

What purpose does the kaleidoscope marker serve in your coomassie-stained gel? If you were doing a ...

What purpose does the kaleidoscope marker serve in your coomassie-stained gel? If you were doing a western blot, how would the kaleidoscope maker be useful?

sunnysunsun96   1002   1 Reply

bio_man