If LAL (limulus amebocyte lysate) turns into a gel when exposed to a sample, it

means the sample is contaminated with gram-negative bacteria. True or false

Answers

Answer 1

Answer: The statement is TRUE.

Explanation:

Gram negative bacteria is a type of bacteria that possesses, from the interior to the exterior, a cytoplasmic membrane, a thin peptidoglycan layer, and an outer membrane containing lipopolysaccharide. The lipid portion of the lipopolysaccharide complex of the outer layer acts as an ENDOTOXIN.

The endotoxin of the gram negative bacteria can be detected in research or biomedical laboratories through a technique called LIMULUS AMEBOCYTE LYSATE test.

The test procedure follows a principle that the endotoxin of these gram negative bacteria are capable of forming gel clots (coagulation) of blood cell (amoebocytes) lysates of the Limulus polyphemus crab.

Therefore, If LAL (limulus amebocyte lysate) turns into a gel when exposed to a sample, it

means the sample is contaminated with endotoxins of gram-negative bacteria.


Related Questions

Your friend is an avid swimmer and wants to burn the most calories in her 20 minute daily swim. She has a choice of swimming in a pool with a water temperature of 80°F (26.7°C) or one with a water temperature of 72°F (22.2°C).

Which pool should your friend choose to achieve her goal? Explain why.

Answers

Answer:72

Explanation:

The water is colder so you would burn more calories.

Far more calories are burned during cold water swimming than swimming in warmer water. The main idea behind this is a fact that cold water decreases the body temperature so much that the body must act to maintain temperature homeostasis.

What is Swimming?

Swimming is a preferred sports activity for burning of calories faster. It is because the resistance of water is so much higher and consistent than that of air, it becomes easier to burn calories by swimming than running. Swimming is a full body workout, that results in more calories burned.

When the temperature of water drops, the metabolism increases up to keep the body warm and people starts shiver, etc. Swimming in cold water will make the body work twice as hard to keep warm and burn more calories in the process. This is one reason why people lose more weight when swimming regularly in cold water than warmer water.

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A strand of DNA, GCT-AAT-GAT, unzips to make mRNA. What is the sequence of the complementary mRNA strand?
a- CGT-TTA-CTA
B- CGA-UUA-CUA
c-UAG-CCG-UCG
d-GCT-AAT-GAT

Answers

Answer:

B

Explanation:

mRNA pairs

G-C

C-G

A-U

T-A

PLEASE HELP IMPORTANT SCIENCE PLEASE -

The diagram below shows a cell placed in a solution.

A cell is shown placed inside a beaker. It is labeled Cell. The solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.

Only water is allowed to move in and out of the cell. What will most likely happen to the cell?

A. It will expand as water moves out of it.
B. It will shrink as water moves out of it.
C. It will expand as water moves into it.
D.It will shrink as water moves into it.

Answers

This would be a I took the quiz

Question 1
1 pts
Where would igneous rock most likely turn into metamorphic rock?
O Deep in the earths crust where it is exposed to the most pressure and hottest temperatures.
O On the surface of Earth's crust where it is exposed to weathering by wind and rain.
o Under the ocean where it is under tremendous pressure.
O In the Earth's mantle

Answers

Answer:

A. Deep in the earths crust where it is exposed to the most pressure and hottest temperatures.

Explanation:

An igneous rock would most likely turn into a metamorphic rock deep in the earths crust where it is exposed to the most pressure and hottest temperatures.

Explain why the Sun's energy is considered a natural resource. Also explain if it is renewable or nonrenewable.

Answers

Explanation:

It's considered a natural resource because it is energy that is not man made.

It's a renewable energy because it naturally gets replaced.

Primary cellular sites for synthesis of proteins

Answers

Answer:

D - Ribosomes.
It’s D good luck have a good night

should there be male and female jobs in science and technology?

Answers

Yes there should yes

Direction of the Earth’s axis changes over time.The Earth wobbles like a top on its axis 26,000 year cycle
A.eccentricity
B.Obliquity
C.Precession
D.None

Answers

Answer:

C. Precession

Explanation:

Axial Precession

What is the role of spindle fibers in mitosis?

Answers

Answer:

They help equally devide the cell.

Explanation:

Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

SOURCE: Nature.com

Consider Giving this Answer Brainliest.

Answer:

The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis.

Explanation:

During mitosis, the spindle fibers are called the mitotic spindle. Their proteins help to hold the sister chromatids together and also play a role in chromosome editing.is a protein structure on chromatids where the spindle fibers attach during cell division to pull sister chromatids apart.

____ detect stimuli and transform them into nerve impulses.
A. Motor neurons
B. Synpases
C. Sensory receptors
D. Axon terminals
E. Sensory neurons

Answers

The answer is Sensory Receptors

The area of the brain controls the sympathetic and parasympathetic nervous
system

Answers

Answer:

Hypothalamus.

Explanation:

This is because hypothalamus is an area of the brain that is located above the brain stem and play functional role in integrating or activating the autonomic functions which receive autonomic regulatory from limbic system. The autonomic nervous system includes parasympathetic and sympathetic nervous system. The hypothalamus controls emotion and memory.

At a sea level, the weight of the atmosphere on a human body is about:
A. 9,800 N
B. 980 N
C. 98 N
D. 9.8 N

Answers

Answer:D I believe

Explanation:

what are two ways in which white blood cells fight pathogens that have entered the body?
A)They produce Antibodies that work against the pathogens
B)They produce hormones to locate the pathogens
C)They surround and destroy the pathogens
D)They make digestive acids to destroy the pathogens

Answers

Answer:

A and C

Explanation:

I'm pretty sure that's the right answers. Hope this helps! <3

The two ways in which white blood cells fight pathogens that have entered the body are "they produce antibodies that work against the pathogens and they surround and destroy the pathogens".

What are pathogens?

Any organism as well as an agent that could cause the disease would be a pathogen in the widest and oldest sense.

What are antibodies?

Whenever the immune system of the body recognizes dangerous compounds, known as antibodies, it produces a protein designated an antibody.

Therefore, the two ways in which white blood cells fight pathogens that have entered the body are "they produce antibodies that work against the pathogens and they surround and destroy the pathogens".

Hence, the correct answer will be options (A) and (C).

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5. Which of the following is a non-flowering plants?
A cypress
B. santan
C. rose
D. yellow bell



☹️ paki answer​

Answers

Answer:

cypress

Explanation:

because this plants is one of the non flowering plants

Answer:

cypress

Explanation:

I have seen it around on my father's friend house they say its cypress and there was no flower in it

The incidence of disease is dependent on what environmental factors?
a.
physical environment, lifestyle, and diet
b.
level of industrialization, physical environment, and biological environment
c.
local customs, biological environment, and exercise regiments
d.
none of the above

Answers

Answer:

A. Physical environment , lifestyle, and diet

Explanation:

Physical environment because diseases like athletes foot are caused by Physical environment. Lifestyle because diseases like atherosclerosis and heart disease are caused by lifestyle. Diet because diabetes, obesity, and osteoporosis are caused by diet.

Answer:

b.

level of industrialization, physical environment, and biological environment

Explanation:

I got a 100% on the quiz :)

Edge 2021

Suppose that a cytoplasmic protein (a protein that will function in the cytoplasm inside of the cell) is synthesized by a particular cell type. Describe the route that this protein will take from the moment its synthesis starts in the nucleus until it makes it into the cytoplasm.

Answers

Answer:

A specific gene that contains the information to encode the target protein is transcribed as a primary transcript (pre-mRNA). Subsequently, the pre-mRNA is processed to form a mature mRNA. Finally, this mRNA then moves through a nuclear pore from the nucleus to the cytoplasm where proteins are translated in the ribosomes

Explanation:

The cell nucleus contains the majority of the cell's genetic material localized on linear molecules called chromosomes. During transcription, genes (specific chromosome segments) are used to synthesize primary transcripts (pre-mRNAs) which are then proceeded to produce mature messenger RNAs (mRNAs). RNA processing involves the removal of non-coding intron regions and the joining of coding exon regions (RNA splicing) in order to form a mature mRNA sequence. Subsequently, the mature mRNA leaves the nucleus through the nuclear pores of the nuclear membrane and travels to the ribosomes where is decoded (translated) to produce a specific polypeptide chain (i.e., a protein). Within the ribosome, the mRNA strand binds to multiple transfer ribonucleic acids (tRNAs) via complementary and consecutive three-nucleotide mRNA sequences called triplets or codons, and tRNAs deliver specific amino acids that are consecutively added to the polypeptide chain.

What is another term for the responding variable?
O primary variable
dependent variable
independent variable
uncontrolled variable

The answer is DEPENDENT VARIABLE
-edgy 2021

Answers

Answer:

B. Dependent variable.

Explanation:

An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).

Hence, an experiment is used by scientists or psychologists to illustrate how a change in variable affects behavior.

This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.

In an experiment, there are two (2) main types of variables and these are;

I. Independent variable: this is the variable that is being manipulated or alters and as such it is the cause of a behavior. This variable stands alone.

II. Dependent variable: this variable is the direct effect of the actions of the researcher in an experiment.

Basically, the dependent variable is the variable that is being measured and tested by an experimentalist.

Hence, dependent variable is another term for the responding variable because it responds to an action.

tanked

A.)
B.)
C.)
d

Answers

Answer:

A.)

Explanation:

The answer is A. I believe this is correct please inform me if it is correct or incorrect. Stay afriv

The answer is A.........

PLEASE HELP ME !!!!!

Answers

Answer:

1. negatively charged ion

Explanation:

It will be a negative charged ion because when electrons are gained, it shows that it is negative. Same goes opposite

Why do hot spring in Yellowstone national park have wooden walkways built around them

Answers

Answer:

You can imagine what would happen if 10,000 people a week were walking over these fragile hot-spring deposits. “The boardwalks are an amazing piece of construction that's a useful tool for resource protection, and visitor enjoyment and safety.

hope it helps you

What is shape does sulfur trifluoride form

Answers

butterfly shape - Each fluorine is attached to the sulfur by a single covalent bond. The SF3 molecule is very short-lived and its structure has not been determined experimentally. It is calculated to adopt a butterfly-shaped molecular geometry, belonging to the Cs point group.

What process occurs at the boundary between the capillaries and the alveoli?


A.
Nitrogen enters the alveoli, and oxygen enters the capillaries.
B.
Oxygen enters the alveoli, and carbon dioxide enters the capillaries.
C.
Oxygen enters the alveoli, and nitrogen enters the capillaries.
D.
Carbon dioxide enters the alveoli, and oxygen enters the capillaries.

Answers

Answer: D.  Carbon dioxide enters the alveoli, and oxygen enters the capillaries.

Explanation:

This describes the exchange of gases in the lungs. When blood from the rest of the body gets to the lungs through the capillaries, oxygen flows from the alveoli which are tiny air sacs in the lungs, into the blood in the capillaries.

Carbon dioxide from the blood brought to the lungs will then flow into the alveoli which will then expel it through the nose. This repeated process ensures that the body keeps getting oxygen and expelling carbon dioxide.

A gardener realizes her plant beds do not contain enough organic material. Which of the following choices
would she be most likely to choose to amend her soil?
choices:topsoil,sand,peat,perlite.

Answers

Answer:

Peat

Explanation:

Did the question on edg 2021

Answer:edg

Explanation:

peat ‍

What is the scientific term that describes the genetic code for an organism ?

Answers

Answer:

the scientific term that describes the genetic code for an organism is the nucleus.

Answer:

genotype

Explanation:

i believe the correct answer is genotype

please help me simple bio genetics

Answers

the answer is D
met-trp—asn—arg-cys-stop

5. When would it be necessary for the two daughter cells to be different than the mother
cel

Answers

Answer:

Living cells go through a series of stages known as the cell cycle. The cells grow, copy their chromosomes, and then divide to form new cells.

Treatment Preparation
Your treatment choices are saline solutions with different amounts of salt (NaCl) that can be added to
Clark's blood and affect osmosis in the brain.
In medicine and veterinary medicine, saline solutions are compared with the normal concentration of
sodium (~143 mmol/L) in healthy blood. Three saline solutions are available: isotonic, hypotonic, and
hypertonic.
Concentration of Sodium
Interpret each as higher, lower, or equal to
normal blood Nat concentration.
Lower
Equal Higher
Isotonic Saline
Hypotonic Saline
000
Hypertonic Saline

Answers

Answer: isotonic saline is equal

              Hypotonic saline is lower

               Hypertonic saline is higher

Explanation:

Here, three saline solutions are available: the isotonic saline solution has an equal sodium concentration, the hypotonic solution has a lesser sodium concentration, and the hypertonic solution has a high sodium concentration.

What is the significance of the saline solution in the medications?

It is critical in the medication because the solution is made up of a mixture of salt and water through which the drugs are delivered and because it is given in intravenous (IV) therapy or to rehydrate patients when there is a need for it. The saline concentration should be regulated here in this solution, or else it may change the blood cells' structure.

Hence, here, three saline solutions are available: the isotonic saline solution has an equal sodium concentration, the hypotonic solution has a lesser sodium concentration, and the hypertonic solution has a high sodium concentration.

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The organism Feline domesticus is a member of the genus:

1. domesticus
2. Lynx
3. Feline
4. Animalia

Answers

Felis domesticus & Felis silvestris. They both belong to the same genus (cats).

Which of the following statements best exemplifies the importance of mentoring? A mechanism to transmit values and standards of professional conduct. A narrowing of the circle of influence and learning. The primary way for senior researchers to recruit a trainee to complete projects for them. A mechanism to get additional grant support

Answers

Answer:

A mechanism to transmit ........ professional conduct

Explanation:

Hope it helps you

Tq

Mentoring is considered as a mechanism, which assists in transmitting the standards and values of professional conduct.  

• A mentor is an individual who advise, support, and guide the person.  

• Mentoring is a process or an act of guiding and helping another person to support their personal development.  

• The main objective of mentoring is to assist one to grow as a person and become the best version of oneself.  

• This helps one in attaining the personal or career goals, presenting one to novel ways of thinking, sharing valuable life lessons, challenging one limiting assumptions, and much more. In short, mentoring helps an individual to attain the values and standards of professional conduct.  

Thus, mentoring helps one to attain the values and standards of professional conduct.

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How the Medical Assistant should evaluation a site for drug administration and why. 

Answers

Answer:

In general, documentation should include the date and time administered, medication name and dose, route of administration, site of administration (if applicable), the lot and expiration date (if applicable), and the patient's response to the medication.

Other Questions
Help pls thank you!!!!!! -2 >- 76whats the solution?? HELP ME PLEASE ITS MATH 32 to 35 weeks have a mean weight of 2500 grams and a standard deviation of 800 grams while babies born after a gestation period of 40 weeks have a mean weight of 2800 grams and a standard deviation of 370 grams. If a 32-week gestation period baby weighs 2375 grams and a 41-week gestation period baby weighs 2675 grams, find the corresponding z-scores. Which baby weighs less relative to the gestation period?Find the corresponding z-scores. Which baby weighs relatively less? Select the correct choice below and fill in the answer boxes to complete your choice.(Round to two decimal places as needed.)A.The baby born in week 32 weighs relatively less since its z-score, nothing, is smaller than the z-score of nothing for the baby born in week 41.B.The baby born in week 41 weighs relatively less since its z-score, nothing, is smaller than the z-score of nothing for the baby born in week 32.C.The baby born in week 41 weighs relatively less since its z-score, nothing, is larger than the z-score of nothing for the baby born in week 32.D.The baby born in week 32 weighs relatively less since its z-score, nothing, is larger than the z-score of nothing for the baby born in week 41. Choose the correct symbol to fill in the blank: 55.56 ___ 55.65 *is it > TRUE OR FALSE? Mai's mother was an outcast in her old country. HELPPPPPP PLEASE !! I appreciate it HELP PLSSS DUE IN 30 MINS2. In the figure below, NP is the perpendicular bisector of LM. Which of the following statements cannot beconcluded based on this given? rain gauge non examples Pls hurry fast What are two central idea that are presented in the passage a. Wood from the koa trees is used to make a wide variety of products What events in sexual reproduction contribute to genetic variation in a population that contributed to evolutionof the species on our planet? Explain. Hii i really need help!!Write a paragraph with 10+ sentences about something math related (algebra 1) 8/t; t=4 rkrrkrkkrkrkrkrkr Sarah is planning for a children's party. She wants to provide each child with a party bag containing 3 items, a whistle, a ball and a tube of sweets. Whistles are sold in packs of 5, balls in packs of 3 and sweets in packs of 6, she doesn't want any single items left over, even if it means she has too many party bags. What are the minimum party bags she can make and how many packs of each item does she need to buy? Was the concept of Ahimsa important in Gupta India? Support your answer with evidence. pls help What does Barack Obama job now Le Pass Compose a ex AVOIR1.Roland [Control] ses chaussettes blanches. (perdre(2. Hier soir, j' [Control] la boum de Yann. (organizer) 3.3" (Control] la tl pour regarder le feuilleton - Hros. (chercher) 4. Roucauei est-ce que tu (Control] Nicolas au magasin? (attendre)5. Roger et Assane (Control] Pierre et son frre la fte nationale. (inviter) 6. Avec tout son argent, Paul (Control] un vlo pour aller au lyce. (acheter)7. Mon pere [Control] sa bowls voiture hier. (Vendre)8. A quelle heure est ce quil [Control] le musee? (Quitter)9. Qui [Control] au tennis cet apres- midi? (Jouer)10. Vivian [Control] un bel anorak Cher. (Choisir) at a local gym you can either pay $90 for a monthly pass then pay $4 each time you go to the gym or you can pay $13 each time you go with no monthly pass fee for how many visits to the gym in a month is the cost of the two options the same? Please help me with these How the colonists attempt to avoid paying the imposed taxes/duties placed on sugar by British Parliament?Do you think it was correct for the British Colonists to smuggle goods instead of paying the tax on the good