In the food service business, three types of chemical compounds are utilized as sanitizers: chlorine-based cleansers, quaternary ammonium, and iodine sanitizers.
Because it is both extremely effective and reasonably affordable, chlorine is the most often used chemical sanitizing agent.
Sanitation is also accomplished by utilizing chemical substances capable of eliminating disease-causing germs.
Chlorine (bleach), iodine, and quaternary ammonium are common sanitizers. In the food service business, chemical sanitizers have gained universal acceptability.
Chlorine, iodine, and quaternary ammonium are examples of acceptable sanitizers. Chemical sanitizers' efficacy is influenced by a variety of conditions.
In diluted form, quaternary ammonium compounds (QAC) are odorless, colorless, and harmless. They can withstand high temperatures, a wide pH range, and the presence of organic compounds.
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briefly explain how hydra accomplish each of the 9 main life process of an animal. use proper structure names when possible.
These are the 9 main life processes of an animal and how hydra accomplish each of them:
RespirationNutritionExcretionSensitivityMovementGrowthReproductionDevelopmentDeathWhat do these processes mean?Respiration: Hydras respire through their skin. The skin is thin and allows oxygen to diffuse into the body. Carbon dioxide diffuses out of the body in the same way.
Nutrition: Hydras are carnivores and feed on small animals, such as plankton and insects. They capture their prey with their tentacles and inject it with a paralyzing venom. The venom paralyzes the prey and makes it easier for the hydra to digest.
Excretion: Hydras excrete waste products through their skin. The waste products diffuse out of the body in the same way that oxygen diffuses in.
Sensitivity: Hydras are sensitive to touch, light, and chemicals. They use these senses to find food, avoid predators, and reproduce.
Movement: Hydras can move by contracting their body. They can also move by extending their tentacles.
Growth: Hydras grow by cell division. The cells at the tip of the body divide and create new cells. These new cells are added to the body of the hydra, making it grow longer.
Reproduction: Hydras can reproduce sexually or asexually. Sexual reproduction involves the fusion of two gametes, each from a different hydra. Asexual reproduction involves the budding of a new hydra from the body of an existing hydra.
Development: Hydras develop from a fertilized egg. The egg divides into two cells, then four cells, and so on. The cells eventually form a blastula, which is a ball of cells. The blastula then forms a gastrula, which is a cup-shaped organism with two layers of cells. The gastrula eventually develops into a hydra.
Death: Hydras can die from a variety of causes, including starvation, predation, and disease.
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Which best describes how heat energy move within a system?
5 reasons
why do people become drug abuser
The five reasons why people become drug abuser are
peer pressure ignoranceenvironmentdisobediencedesire to take drugs.What is drug abuser?Drug abuser is the ability of some one to use overdose of drugs. it is a process where someone dies not follow prescription of drugs but uses overdoses to derive one satisfaction or the other.
Therefore, The five reasons why people become drug abuser are
peer pressureignorance environmentdisobediencedesire to take drugs.Learn more about drug abuse below.
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Which part of the phospholipid is found inside the membrane away from water?
The phosphate heads of phospholipids face the external watery side, whereas the fatty acid tails face within, away from water.
What phospholipid components are hydrophobic or afraid of water?Each phospholipid has two hydrophobic tails and a hydrophilic head, making it amphipathic. The hydrophilic heads face outward, and the hydrophobic tails are inwards facing. Hydrophilic heads and hydrophobic tails are visible in the chemical structure of phospholipids.
In a phospholipid, what is hydrophobic?The fatty acid tails are what make phospholipids hydrophobic. Carbon and hydrogen chains make up the tails. Because the bonds between carbon and hydrogen are non-polar, water molecules cannot interact with them. As a result, the tails are hydrophobic.
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how is energy related to the reactants and products of a chemical reaction
Answer:
All chemical reactions involve energy.Energy is used to break bonds inreactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions releaseenergy. The law of conservation ofenergy states that matter cannot be created or destroyed.
Answer:
They will be different from the reactants
Explanation:
Even though the new product is made up of the reactants, the product will have different properties.
Give two examples of cells that relate their shapes with their functions.
Answer:
alle and cell's
Explanation:
this is the answers you need to solve
Pretend that you are writing a letter to the president proposing ways that the US can reduce its contribution to climate change. In your letter, include at least three facts you learned today.
Answer:
Dear Mr. President,
Your strong voice has called attention to the risks of human-induced climate change and the need to take timely and effective steps to address it. We are pleased to report further progress in our efforts to advise you on climate policy options that could help encourage these steps.
- (Explain what you learned in class today ) I don't know what you were taught in class so you have to figure what to put here.
Mr. President, our temperatures are consistently rising while moisture is increasingly evaporating. Forest management is merely one piece of the puzzle — something our own firefighters would be quick to remind you. Since 2009, our state has spent more than $130 million on forest health and fire preparedness. These events still overwhelm our residents and resources, because these fires are unlike anything people have seen before.
Sincerely,
Explanation:
hope this helps!
Ecoli was added in test tube with red phenol and lactose. the red indicator turned yellow. explain the lac operon
indicate which will be on and which will be off
gene - -- rna polymerase ---- mrna---- repressor-------- lactase.
In the case of the test tube experiment, the addition of E. coli with red phenol and lactose caused the red indicator to turn yellow. This indicates that β-galactosidase was produced by the bacteria, which broke down lactose into glucose and galactose.
The lac operon is a group of genes in the DNA of E. coli that are involved in the regulation of lactose metabolism. When lactose is present in the environment, it induces the expression of the lac operon genes. The lac operon consists of three structural genes: lacZ, lacY, and lacA. The lacZ gene encodes the enzyme β-galactosidase, which breaks down lactose into glucose and galactose. The lacY gene encodes the lactose permease, which transports lactose into the cell. The lacA gene encodes a transacetylase that is involved in lactose metabolism.
The lac operon is controlled by a regulatory gene called lacI. The lacI gene encodes a repressor protein that binds to the operator sequence in the lac operon and prevents the transcription of the structural genes. When lactose is present, it binds to the repressor protein and causes a conformational change that prevents it from binding to the operator sequence. This allows RNA polymerase to bind to the promoter sequence and initiate transcription of the structural genes.
The presence of glucose in the medium can cause the repression of the lac operon, but since lactose is also present, it acts as an inducer and overcomes the repression. This leads to the production of mRNA from the lac operon, which is translated into β-galactosidase by the ribosomes. Therefore, in this experiment, the genes for β-galactosidase and lactose permease were turned on, and the lac repressor was turned off.
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Which characteristics of wombats is most likely an adaptation for attracting mates?
A.muscular legs and shoulders
B. thick brown fur
C. a pouch with milk glands
D. dropping with unique smell
Answer:
D
Explanation:
what factor is found in a scientific claim
Answer:
similar results in multiple tests of the claim
Explanation:
on some of my study cards
Help please true or false
Answer:
false
Explanation:
because it's false
Answer:
The answer correct false called photosynthesis
Which example is a way that intercellular Communication occurs
Answer:
A signal is sent from a nerve cell to a muscle cell
Explanation:
I just took this test and this was the correct answer.
Answer: A signal is sent from a nerve cell to a muscle cell
Explanation:
What is 0.640 as a fraction in simplest form?
Enter the answer by filling in the boxes.
Answer:
16/25
Explanation:
0.640 = 640
____, cancelling one zero, we have
1000
= 64
___, cancelling by 4, we have
100
= 16
___
25
which of these statements is shown by the photo?
A. the southern hemisphere is in summer and the northern hemisphere is in the winter.
B. Both polar regions are experiencing day and nighttime hours of relatively equal length
C. The southern hemisphere is closer to the sun than the northern hemisphere.
Answer:a
Explanation:
Sodium deficiency hampers reabsorption of kidney shows a thick-walled vessel with renal corpuscles scattered in the tissue on one side of the vessel but not on the other side. What vessel is this? A. glucose B. albumin C. creatinine D. water A. Interlobar artery B. Cortical radiate artery C. Cortical radiate vein
Sodium deficiency can inhibit renal reabsorption by thick-walled vessels and renal blood cells scattered throughout the tissues. The ship was called D. Air
What is sodium deficiency?A deficiency of sodium in the blood is also known as hyponatremia. Hyponatremia occurs when the composition of water and sodium is not balanced. Where there is too much water or not enough sodium in the blood. Typically, a person's sodium level should be between 135 and 145 milliequivalents per liter (mEq/L). So that sodium deficiency can inhibit kidney reabsorption to remove excess water levels in the body.
In hyponatremia, sodium levels in the blood are less than they should be. This results in increased water levels in the body and makes the body's cells swell.
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if you were to look at tissue frim the base if the stem if an onioan plany would you find more or less cells in mitosis? why?
The most desirable and appropriate raw material to investigate the various stages of mitosis is provided by the meristematic cells that are located in the tip of the roots.
The Eukaryotic cells' nuclei split in half during mitosis, dividing the parent cells into two daughter cells as a result. Therefore, there are two main steps to every cell division:
Cytoplasm division, or cytokinesis
Karyokinesis: Division of the nucleus
Monocot plants include onions. Monocotyledonous plants have big, conspicuously arranged chromosomes. So, the root tips are utilised. The length of time required for mitosis varies depending on the species and kind of cell.
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If nondisjunction, a process in which the homologous chromosomes fail to separate, occurs during meiosis I,
If nondisjunction, a process in which the homologous chromosomes fail to separate, occurs during meiosis I, the offspring will either have one too many or one too few numbers of chromosomes.
Chromosomes are thread- suchlike structures set up within the nexus of both beast and factory cells. Each chromosome is composed of protein as well as a single patch of deoxyribonucleic acid( DNA). DNA, which is passed down from parents to seed, contains the specific instructions that distinguish each living critter. The word chromosome is deduced from the Greek words for color( hue) and body( bodies)( soma). Chromosomes were given this name by scientists because they're cell structures or bodies that are heavily stained by some various colorings used in exploration. The chromosome's unique structure keeps DNA tightly wrapped around spool- suchlike proteins known as histones. DNA motes would be too long to fit inside cells if they weren't packaged in this manner.
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you have learned that during a solar eclipse the moon passes between the sun and the earth. During a lunar eclipse, the earth passes between the sun and the moon. In this experiment you will simulate both a solar and lunar eclipse.
These supplies are needed:
A large ball about the size of a basketball to represent the earth
A small ball about the size of a tennis ball to represent the moon
A strong light of about 100 watts or more
A method for darkening the room
Note: If your room is difficult to darken, you may use the sunshine as a source of light. You may also want to use cardboard circles in place of balls. Cut one large circle about 8 inches in diameter to represent planet earth. Label it earth. Cut one small circle about 3 inches in diameter. Label it moon.
Procedure:
1. Place the large ball (basketball) about 12 feet from the light source. Then, place the small ball (tennis ball) in the shadow of the large ball. If you are using cardboard circles in place of the balls, hold the large cardboard circle up in the sunshine. Then, place the moon (small cardboard circle) in earth's shadow. When you have lined up the balls or cardboard in this manner, you have made a shadow fall on the moon. This shadow represents an eclipse of the moon.
2. Now, shift the balls or cardboard to make the shadow fall on the basketball or largest cardboard. In effect, the sun is being darkened. If you were an observer on the earth, this condition would be a solar eclipse. When the moon comes between the sun and planet earth, a solar eclipse occurs.
The preceding illustration shows how an eclipse can be artificially made. The moon (tennis ball) is darkened by a shadow. This shadow represents a lunar eclipse (moon eclipse). You can reverse the position of the tennis ball and the basketball to represent a solar eclipse.
What did you observe?
Answer:
A solar eclipse happens when the Moon passes between the Sun and Earth, casting a shadow on Earth that either fully or partially blocks the Sun's light in some areas. This only happens occasionally, because the Moon doesn't orbit in the exact same plane as the Sun and Earth do.
Explanation:
I am guessing in your experiment there, the ball had a complete shadow over it, to show you how a solar eclipse works or looks.
In pea plants, long stems are dominant to short stems, purple flowers are dominant to white, and round peas are dominant to wrinkled. Each trait is determined by a single, different gene. A plant that is heterozygous at all three loci is self-crossed, and 2,048 progeny are examined. How many of these plants would you expect to be long stemmed with purple flowers, producing wrinkled peas?
Assuming the genes are not linked nor interacting with each other, the expected number of long stemmed plants with purple flowers, producing wrinkled peas, L-P-rr, is 288.
Available datalong stems are dominant to short stemspurple flowers are dominant to white, round peas are dominant to wrinkledEach trait is determined by a single, different gene.A heter0zyg0us plant is self-crossedF1) 2,048 descendantsLet us name te alleles as follows
L ⇒ Long steml ⇒ Short stemP ⇒ Purple flowersp ⇒ white flowersR ⇒ Round peasr ⇒ wrinkled peasCross) heter0zyg0us plant is self-crossed
Parental) LlPpRr
Gametes) LPR, LPr, LpR, Lpr, lPR, lPr, lpR, lpr
Assuming that these genes are not linked nor interacting with each other, to make the calcs easier we will make crosses considering each gene separately.
StemsParental) Ll x Ll
F1) 1/4 LL, 2/4 Ll, 1/4 ll
3/4 long stem, 1/4 short stem
Flower colorParental) Pp x Pp
F1) 1/4 PP, 2/4 Pp, 1/4 pp
3/4 purple flowers, 1/4 white flowers
PeasParental) Rr x Rr
F1) 1/4 RR, 2/4 Rr, 1/4 rr
3/4 round peas, 1/4 wrinkled peas
Now, we will get the proportion of individuals with long stems, purple flowers, producing wrinkled peas, L-P-rr
Note: The symbol - is representing either a dominant or a recessive allele.
From the crosses, we know that
3/4 are long stemmed, 3/4 have purple flowers, and 1/4 have wrinkled peas.To get the proportion of individuals expressing all these traits together, we just need to multiply these values.
3/4 L- x 3/4 P- x 1/4 rr = 9/64 L-P-rr
Knowing that the total number of plants is 2,048 and that there are 64 possible gametes combinations from this cross, we will use the proportion 9/64 to get the number of plants with these traits.
64 ------------- 2,048 plants
9 -------------- X = (9 x 2048) / 64 = 288 plants.
We expect to find 288 long stemmed plants with purple flowers, producing wrinkled peas.
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Which two statements describe evidence that directly led to the development of the theory of plate tectonics?
A.Sonar confirmed the presence of mid-ocean ridges.
B.Each continent has its own unique mountain formations.
C.Fossils of plants found in South America differ from fossils found in Africa.
D.Seismic data showed that most earthquakes and volcanoes occur where crust is being formed or destroyed.
Answer: The answer is A and D
Explanation:
Jus pick it if you trust me
Two statements that describe evidence that directly led to the development of the theory of plate tectonics? a) Sonar confirmed the presence of mid-ocean ridges. d) Seismic data showed that most earthquakes and volcanoes occur where crust is being formed or destroyed.
What is plate tectonic theory?According to this theory, the earth's surface is separated by plates that move above the molten mantle. Over the plate borders, these plates interact with one another, causing friction.
What is seismic data?Seismic surveys provide a scan of the earth's subsurface using reflected sound waves.
By knowing the speeds at which seismic waves move through rocks at various places and depths, we can learn about geologic formations on the earth. and describes the way an area will tremble during an earthquake.
Hence, options (a) and (d) are correct.
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The cell's ability to maintain the correct amount of water and minerals in it is an example of ____.
Answer:
homeostasis
Explanation:
homoeostasis regulates the body environment to normal, like any aspect of the body like this that you're asking about...this process that is called osmoregulation and it is an example of homeostasis
*20 POINTS*
Evolution occurs only when the conditions of Hardy-Weinberg equilibrium are not satisfied. What are the conditions for maintaining Hardy-Weinberg equilibrium in a population of beetles for evolution? Drag each sentence into the correct box.
Conditions for Hardy-Weinberg equilibrium Conditions for evolution to occur
When a population reaches Hardy-Weinberg equilibrium for a gene, it stops evolving and allele frequencies remain constant across generations. Hardy-Weinberg assumptions include no mutation, random mating, no gene flow, infinite population size, and no selection.
EXPECTATIONS FOR HARDY
There should be no mutations in the beetle population because new alleles would change the allele frequencies.Beetle mating should occur at random.Natural selection should not occur in the beetle population.The population of beetles must be large enough to prevent genetic drift.There should be no beetle migration into or out of the population.EVOLUTIONARY CONDITIONS-
Green beetles benefit from natural selection.Purple mutants can be found among the Beatles.Because preferred mates are red, these people reproduce.A forest fire killed a large number of brown beetles.There are still a significant number of yellow beetles.To know more about Hardy Weinberg’s equilibrium click here,
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Often, ____________ or basidiomycetes are the fungi involved, and they form several layers of hyphae, one of which envelops the photosynthetic ____________ .
Most of the time in lichen, ascomycetes or basidiomycetes form the fungal part with several hyphae layers enveloping the photosynthetic algal part.
LichensLichens are composite organisms. They are formed from a symbiotic relationship between fungi and algae. The fungi provide shelter and some vital minerals for the algae while the algae provide food via photosynthesis.
Oftentimes, the fungi components are usually ascomycetes or basidiomycetes. They form a network of hyphae around the photosynthetic algae as a form of protection.
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How is it possible for intertidal zones to be completely submerged underwater then completely dry later that same day?
A. because they experience a high volume of rain
B. because they are submerged underwater at high tide and directly exposed to the sun at low tide
C. because they are full of organism that regurgitate their water intake
Answer:
The answer is B
Explanation:
They are submerged underwater at high tide and directly exposed to the sun at low tide.
Because they are submerged underwater at high tide and directly exposed to the sun at low tide Therefore, option (B) is the correct answer.
What are intertidal zones?Intertidal zones are areas that are exposed to the air at low tide and submerged underwater at high tide. These areas are found along the coastlines of oceans, seas, and other bodies of water. The movement of the tides is caused by the gravitational forces of the moon and the sun, which cause the water level in the oceans to rise and fall.
At high tide, the water level is at its highest and the intertidal zone is completely submerged underwater. At low tide, the water level is at its lowest and the intertidal zone is exposed to the air. As a result, the intertidal zone can experience rapid changes in temperature and humidity as it is alternately exposed to the sun and submerged in water.
The organisms that live in intertidal zones are adapted to these extreme conditions and are able to survive the frequent changes in temperature and humidity. Some species are able to tolerate long periods of exposure to the air, while others are able to survive prolonged periods of submersion in water. The unique conditions of the intertidal zone provide a rich habitat for a variety of plant and animal species.
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1. Which theory did Darwin use to explain evolution?
the theory of acquired characteristics
the theory of adaptive evolution
the theory of natural selection
the theory of mutated genes
what are bodies of rock or gas named for ancient gods?
Answer:
wait, now i search internet and i tell u.
What are the possible blood types of a baby with a mom who is heterozygous for blood type A and a dad with type O?
Answer:
A & O group
Explanation:
Dad will be having io io allele and mom will be having ia io
The possible blood types for the baby are either A or O, with equal likelihood of 50% for each.
What is blood type?A classification system called blood type explains whether or not specific antigens are present on the surface of red blood cells. Each of the four major blood types—A, B, AB, and O—has distinct antigen markers.
A and O are the two possible blood types for a child whose mother is heterozygous for blood type A (genotype AO) and whose father has type O (genotype OO).
A baby has a 50% chance of acquiring the A allele from the mother and a 50% chance of inheriting the O allele from the father because each parent gives one of their two blood type genes to their offspring.
Baby with blood type A inherits the A allele from the mother and the O allele from the father (genotype AO).
The child will have blood type O if both parents carry the O allele (genotype OO).
Therefore, the possible blood types for the baby are either A or O, with equal likelihood of 50% for each.
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please answer this for ke
Answer:
your answer should be C
describe what isomer are and how they apply to carbohydrates
Answer: they all have the same chemical formula but differ structurally and chemically. Disaccharides form when two monosaccharides undergo a dehydration reaction (a condensation reaction); they are held together by a covalent bond.
Explanation:
The phenomenon of exhibiting similarity in the chemical formula but differs in the compound’s structure is termed isomerism. The particular compounds that exhibited such similarity are referred to as isomers.
Isomers are classified into two major categories namely structural and stereoisomers. Isomers apply to carbohydrates that are described as follows:
Glucose, fructose, and galactose are some of the examples of monosaccharide isomers They all tend to have the same chemical formula but they are varied in terms of structure and chemical nature.Thus, we can conclude that the isomers have the same molecular formula but varying structures. Further, how the isomers apply to carbohydrates is also discussed.
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the cftr receptor moves chloride ions out of a cell by active transport. this is an example of a. an oxidation reaction. b. a reaction requiring the input of atp. c. equilibrium. d. a reaction coupled with the production of atp. e. a reduction reaction.
CFTR receptor moves chloride ions out of a cell by active transport is an example of a reaction requiring the input of ATP.
In general , the CFTR protein is a specific protein called an ion channel. These ion channel also moves an atoms or molecules that provide an electrical signal that comes from inside the cell to outside, or vice versa. Inside the lungs , the CFTR ion channel helps to move chloride ions from inside the cell to outside the cell.
Hence, cystic fibrosis transmembrane conductance regulator (CFTR) are the specific channel/enzyme which helps in the passive diffusion of chloride and bicarbonate mediated by epithelial cell membranes.
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