Cell Biology

Design a serological test to detect botulinum toxin in food.

Design a serological test to detect botulinum toxin in food.

Design a serological test to detect botulinum toxin in food.

barry   1696   N/A

barry

A person has an antibody titer of 28. What do you know about this person?

A person has an antibody titer of 28. What do you know about this person?

A person has an antibody titer of 28. What do you know about this person?

barry   1006   N/A

barry

One of the advantages of some newly developed rapid identification tools is that

One of the advantages of some newly developed rapid identification tools is that

One of the advantages of some newly developed rapid identification tools is that pure cultures aren't needed. Why is a pure culture necessary for biochemical tests such as the Enterotube, but not for DNA probes?

barry   2433   N/A

barry

A person has antibodies against the measles virus. Identify three ways in which

A person has antibodies against the measles virus. Identify three ways in which

A person has antibodies against the measles virus. Identify three ways in which these antibodies could be acquired.

barry   3988   N/A

barry

Positive diagnosis of AIDS is made when a patient has antibodies against the hum

Positive diagnosis of AIDS is made when a patient has antibodies against the hum

Positive diagnosis of AIDS is made when a patient has antibodies against the human immunodeficiency virus (HIV). Why does a patient have an immune deficiency if he or she is making antibodies?

barry   3276   N/A

barry

Genome reveals the evolutionary path of the stickleback

Genome reveals the evolutionary path of the stickleback

Recently, the international journal "Nature, Nature reported that scientists found in CSF1 the stickleback such the Phi helmet wearing a" small fish body mutations. These mutations may help to the stickleback quickly evolved to adapt to sal

yoxi5236   998   N/A

yoxi5236

Micro Help

Micro Help

The fill in the blanks #2 in the CRITICAL THINKING section.

It would be nice if we actually did the whole lab in class so I have a better understanding of these questions.

Thanks!

[url]http://www.biologyalive.c

trin   1049   N/A

trin

Haw many time a cell may live?

Haw many time a cell may live?

Hi ,
life's body is consist of different kinds of cell.And we know that it is producing all time and ending all time .But haw many time can may live one cell ?Is There any variation in different animals to living time?Ans me.Thank you.

greatmona1   824   N/A

greatmona1

Relate active transport to chemiosmosis in cellular respiration and in light reactions of photosynthesis.?

Relate active transport to chemiosmosis in cellular respiration and in light reactions of photosynthesis.?

Stuck on last question. Also what is Na-K pumps and proton pumps. Simplest answers are good. They are active transport?

If you have time,
I am having trouble understanding H+ ions and  active transport and against concentration gradient. I guess el

nzrodrigue   1941   N/A

nzrodrigue

Does anyone know a site I can use to find out what the colony morphology for ..

Does anyone know a site I can use to find out what the colony morphology for ..

bacillus brevis, bacillus sphaericus, enterobacter aerogenes, mycobacterium smegmatis, sarcina aurantianca, sporosarcina ureae

LML9404   3176   N/A

LML9404

Effects of Heat and Ninhydrin on Amino Acids/Proteins

Effects of Heat and Ninhydrin on Amino Acids/Proteins

1. What effect does ninhydrin and heating (for 2-3 mins) have on proteins and amino acids?
2. In terms of the chemical structures of amino acids and proteins, provide an explanation for the results of the ninhydrin test.

thanks 

Sektor404   1578   N/A

Sektor404

DNA and RNA

DNA and RNA

1) What are 3 characteristics of DNA and RNA polymerization (in bacteria) which are similar. Characteristics may include precursors, proteins or enzymes, the mechanism of polymerization and similar items.

- I think ligase- fills in the hol

lny095   1239   N/A

lny095

can some one explain me the method of Polymerase chain reaction?

can some one explain me the method of Polymerase chain reaction?

i want to know the method step by step?
it says explain the PCR? answer this perfectly.

smokeyjou   663   N/A

smokeyjou

a sketch of a white blood cell performing endocytosis to destroy a salmonella bacterium?

a sketch of a white blood cell performing endocytosis to destroy a salmonella bacterium?

a sketch of a white blood cell performing endocytosis to destroy a salmonella bacterium?

julesarth   1586   N/A

julesarth

Is this a stupid question but do DNA Primers dissociate after PCR?

Is this a stupid question but do DNA Primers dissociate after PCR?

In a normal PCR reaction do the DNA PCR primers dissociate after DNA polymerase has passed the origin of replication?... Does this mean that you can use the same forward primer for sequencing as for amplification?

liddojoe   421   N/A

liddojoe

How do you calculate molarity when given grams and mL?

How do you calculate molarity when given grams and mL?

For example, when you are given grams of KHP and mL of NaOH, how would you calculate the molarity of your NaOH solution?

KHP has a molecular formula of KHC8H4O4.
If I have 1.040 grams KHP and 51.8 mL NaOH, is the molarity of NaOH 0.09?

buggyg69   411   N/A

buggyg69

What was the initial molarity of the solution of HA?

What was the initial molarity of the solution of HA?

A solution of an unknown monoprotic weak acid, HA, has a pH of 5.30. The Ka of HA is 6.50  10-8. What was the initial molarity of the solution of HA?

BUGG123   410   N/A

BUGG123

What is a formula equating molarity to molality?

What is a formula equating molarity to molality?

I'm doing chem homework and it asks for a formula that equates molarity to molality. HELP!

Thank you!

Bugrahan   600   N/A

Bugrahan

What is the molarity of the acid solution ?

What is the molarity of the acid solution ?

When a chemist titrates a standard solution of 450 mL of hydrocyanic acid (HCN) with 0.251 M potassium hydroxide (KOH) , she finds that it requires 462.4 mL of the base to reach the endpoint of the titration. What is the molarity of the acid solution

buggmoma10   451   N/A

buggmoma10

Phases

Phases

In order for anaphase to begin, which of the following must occur?

xotrinaxo4   506   N/A

xotrinaxo4

inhibition of alkaline phosphatase by inorganic phosphate?

inhibition of alkaline phosphatase by inorganic phosphate?

what are some factors, besides pH, spec, temperature and substrate concentration, and human error that affect the competitive inhibition of alkaline phosphatase by inorganic phosphate

Nursmonica   2018   N/A

Nursmonica

elevated levels of alk phosphatase and low levels of alt in a cbc, what does this mean?

elevated levels of alk phosphatase and low levels of alt in a cbc, what does this mean?

i had a 98 for my alkaline phosphatase in my cbc which was high
i had 16 for my alt (not sure what it is) in my cbc which was low

i know both are enzymes but im not sure what they mean

everything else in my cbc was within the range

smithssm4   797   N/A

smithssm4

PLoS ONE：Human Bone Marrow Mesenchymal Stem Cells Therapy May AmelioratePancreas

PLoS ONE：Human Bone Marrow Mesenchymal Stem Cells Therapy May AmelioratePancreas

Researchers from Cedars-Sinai's Maxine Dunitz Neurosurgical Institute found a vascular genesis gene could contribute to human marrow mesenchymal stem cells (BMSCs) constantly a

yoxi5236   704   N/A

yoxi5236

Transduction

Transduction

1) Phages capable of generalized transduction
A. Chromosome which are resistant to restriction enzyme
B. the capacity to transducer any donor gene to recipients
C. Genes for resistance to antibiotics
D. Integrons for acquiring ho

lny095   601   N/A

lny095

Eukaryotic Flagella

Eukaryotic Flagella

A-Eukaryotic flagella:

There are two competitive categories of designs for the transformative source of the eukaryotic flagella .
Endogenous, autogenous and quick filiation's models:
These designs claim that cilia developed f

jack-88   428   N/A

jack-88

Archaeal flagella

Archaeal flagella

The lately elucidated archaeal flagella is similar, not homologous, to the microbe one. Moreover to no series likeness being recognized between the genetics of the two techniques, the archaeal flagellaseems to develop at the platform rather than the

jack-88   464   N/A

jack-88

Action Potential Generation and Refractoriness

Action Potential Generation and Refractoriness

Electrical signals that neurons use to transmit information over long distances are __________ potentials.

     action
   
When a neuron is at rest ______ leaks out of the cell, while _____ leaks into the cell.

    pot

treeboowee   704   N/A

treeboowee

How many viruses are there to generate a plaque?

How many viruses are there to generate a plaque?

Question 1:
What I mean by this is that when we plate bacteria with say bacteriophage, we sometimes see plaques. I keep hearing that one bacteriophage generated the plaque, but it this often the situation? I find it hard to believe that just one

elemental   293   N/A

elemental

Provide a reason to classify bacteria?

Provide a reason to classify bacteria?

Answer:
Bacteria are very diverse, they are categorized in many categories, including whether they need air, where they dwell, their cell structure, shape, and diseases they cause.

jhose619   596   N/A

jhose619

Why was it previously believed that only DNA viruses could cause cancer? How can

Why was it previously believed that only DNA viruses could cause cancer? How can

Why was it previously believed that only DNA viruses could cause cancer? How can RNA viruses cause cancer?
Answer:
The cancer genes of oncoviruses are similar to certain genes in the nucleic acid of the host, when a virus infects the host,

jhose619   2366   N/A

jhose619

Effect of antibacterial compound

Effect of antibacterial compound

If one is to determine how adding an antibacterial compound to a bacterial culture effects protein expression / protein components of the bacterial cell, what is a typical protocol followed after cell lysis? From what I found after an online research

micro   805   N/A

micro

Molecular Cloning Questions

Molecular Cloning Questions

I was just hoping someone might answer these questions for me. I'd really appreciate it.

GEL EXTRACTION OF VECTOR
(following digestion of vector by 2 restriction enzymes and dephosphorylation using CIP)

Which of thes

yomino   568   N/A

yomino

Ca-phosphate transfection method

Ca-phosphate transfection method

CaPO4 - co-precipitation involves precipitating the dna with calcium by increasing the ability of the cell to uptake calcium with dna.
Steps:
assuming we have a virus with its viral dna
add phosphate buffer and calciumchloride.

ehd123   523   N/A

ehd123

Fragile X is a form of mental impairment caused by a gene on the X chromosome. Children are autistic

Fragile X is a form of mental impairment caused by a gene on the X chromosome. Children are autistic

I need help matching syndrome with chromosome terms please.

Hint: Fragile X is a form of mental impairment caused by a gene on the X chromosome. Children are autistic, affectionate, aggressive and can have short bursts of violence. Sudden

Bermystudent   1789   N/A

Bermystudent

Could someone please check if I answered these questions correctly?

Could someone please check if I answered these questions correctly?

1. At the resting potential, what is the direction of net movement for Na+, K+, and Cl-.

Information Given:
Resting Membrane Potential: -72.88 mV
Na+ Nernst Potential: 69.91 mV
K+ Nernst Potential: -96.88 mV
Cl- Nernst

student93   420   N/A

student93

Can inducing tumor cell death via immunotherapy stimulate systemic anti-tumor re

Can inducing tumor cell death via immunotherapy stimulate systemic anti-tumor re

Can inducing tumor cell death via immunotherapy stimulate systemic anti-tumor responses?

matthewlookgoo   697   N/A

matthewlookgoo

Signal Transduction: The difference between Kinase-phosphatase and GTPase switch

Signal Transduction: The difference between Kinase-phosphatase and GTPase switch

In cell regulation of protein activity, cells can be regulated by two different types of switches.

is the Kinase-phosphatase switch specific to ADP-phosphorylation/ ATP-dephosphorylation  and the  GTPase switch specific to GDP-p

SPCIALk   836   N/A

SPCIALk

Can someone help with this project?

Can someone help with this project?

Some of the mitochondrial electron transport carriers (the cytochromes) absorb light at characteristic wavelengths when they are carrying the extra electrons from NADH but not when they give up the electrons to the next carrier. Thus, the light absor

jschuck17   2182   N/A

jschuck17

enzymes are classified as

enzymes are classified as

functional proteins

LaShaun   299   N/A

LaShaun

after getting a bachelor degreein medical laboratories

after getting a bachelor degreein medical laboratories

Hello there,

I am in Medical Laboratory program, and I am thinking what other programs that could be related to Molecular genetics and microbiology that I could think of studying after I finish my bachelor?

or if you have anythi

pro.d   751   N/A

pro.d