A company is creating a new mosquito repellent, and needs to figure out how much is
needed to stop mosquito bites. They find volunteers from the nearby college. Each
person is given either 1mL, 2mL, or 3mL of the repellent to rub on their arm. Some
volunteers are given no repellent. Each person is then put in a room with mosquitoes for
10 minutes. Numbers of bites are measured for each volunteer.


What is the independent variable

What is the dependent variable

And what is the control group

Answers

Answer 1
A company is creating a new mosquito repellent, and needs to figure out how much is
needed to stop mosquito bites. They find volunteers from the nearby college. Each
person is given either 1mL, 2mL, or 3mL of the repellent to rub on their arm. Some
volunteers are given no repellent. Each person is then put in a room with mosquitoes for
10 minutes. Numbers of bites are measured for each volunteer.

Related Questions

Prey animals are...
A. mutualistic.
B. carnivores.
C. captured and eaten.

Answers

A. Mutualistic I think

Answer:

Explanation:

answer C.  Captured and Eaten
Reason: B. Carnivores are meat and hunt for prey and A: are things that help each other out

The LED light source does not get hot. Explain why it is important that the pondweed remains at a constant
temperature?

Answers

The LED light source does not get hot because

Temperature affects rate of photosynthesis or rate of bubble production.Reaction or photosynthesis is controlled by enzymes.

What is the LED explain?

LED stands for Light Emitting Diode. LED lights produce light up to 90% more efficiently than incandescent  bulbs. An electric current is passed through the microchip, which illuminates small light sources that we call LEDs, resulting in visible light. Compared to conventional light sources, which first convert electrical energy into heat and then into light, LEDs (light-emitting diodes) convert electrical energy directly into light, producing efficient light  with little wasted electricity.

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interpret the chemical formula for the organic compounds: carbohydrates, lipids, and proteins

Answers

The chemical formulae for carbohydrates is Cx(H2O)y, for lipids is CH3(CH2)nCOOH , and for proteins is  RCH(NH2)COOH.

Carbohydrates are the polyhydroxy aldehydes or ketones. In simple terms, they are also called hydrates of carbon. The carbohydrates have three classes: monosaccharides, disaccharides and polysaccharides. The carbohydrates can have structural, nutritional or energy giving functions in the body.

Proteins are the polymers of amino acids. The primary structure of protein is composed of linear chain of amino acids and the sequence of these amino acids is responsible for the further folding of proteins that describes the functionality of the protein.

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What happens to the concentration of enzymes over the course of a chemical
reaction?
OA. It increases gradually.
OB. It decreases gradually.
C. It remains constant.
D. It increases to a maximum and then decreases again.

Answers

Answer:

Explanation:

CORRECT ANSWER: It remains constant.

Thank me later!!!!!!!

Which of the following is the best description of the music Mussorgsky wrote to accompany the Gnome?
A. Dark, choppy, dynamic contrasts
B. Long flowing phrases

Answers

i think A would be the best

Answer: A. Dark, choppy, dynamic contrasts

Which element is most common in carbohydrates?
O hydrogen
O carbon
O nitrogen
O oxygen

Answers

Hydrogen is most common in carbohydrates.

What are carbohydrates?Prior to any oxidation or reduction, the majority of carbohydrates have the empirical formula Cm(H2O)n. Carbohydrates are made up only of carbon, hydrogen, and oxygen atoms.The polyhydroxyaldehydes (aldoses) or polyhydroxyketones (ketoses) that makeup carbohydrates are made of C, H, and O.They are divided into three categories: monosaccharides, oligosaccharides, and polysaccharides.Most of the carbohydrates in humans are d isomers, unlike in animals. The most significant monosaccharide in humans, glucose is an aldohexose that cells use as fuel.In a 1:2:1 ratio, carbon, hydrogen, and oxygen make up the class of chemical molecules known as carbohydrates.

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The concentration of solutions is measured in a unit called moles (M). Now that you know this, use the picture to answer questions #1 - #5. The picture shows a red blood cell floating in a solution in a beaker. The picture also shows the concentrations of salt inside the red blood cell and the concentration of salt in the beaker.

Answers

Red blood cells (RBCs) would have a larger solute content outside of them than inside of them if they were detected in a concentrated salt solution.

Osmosis would cause the water to leak out of the cell, causing it to shrivel and stop functioning.

What occurs to red blood cells when they are exposed to a hypertonic solution?

A red blood cell will swell up in a hypotonic solution and maybe rupture, but in a hypertonic solution it would shrink, making the cytoplasm thick and its contents concentrated, and may even perish.

Active transport involves the movement of chemicals from a low-concentration location to a high-concentration area in opposition to the concentration gradient. Being "active" means that this process uses energy (usually in the form of ATP).

Due to the diffusion mechanism, which asserts that water flows from a high concentration of water (RBC) to a low concentration of water when a cell is immersed in a concentrated solution (saline water).

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what is the salt concentration of pure water

Answers

The salt concentration of pure water is less than 1,000 ppm

How might you model the relationship between a tomato plant and the hornworm catepillar?

Answers

The relationship between the tomato plant and hornworm caterpillar is of parasitism.

Parasitism is the mode of nutrition where an organism lives in close association with another organism. One organism is benefitted from this association and is called the parasite. And the person who gets harmed in this is called the host. The parasite may live on the outer surface of the host or even inside the body.

Hornworm caterpillar belongs to the family Sphingidae. The caterpillar has a horn-like tail and hence the name. The caterpillar specially lives on the tomato plant and feeds on its leaves. It can eat the leaves to such an extent that the plant may become completely defoliated. Hence they have a parasitic relation.

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Will Give Brainiest to the first to answer.
Explain what caused the dark-colored peppered moths to become more numerous than the light-colored peppered moths when their environment became covered in soot.

Answers

Answer:

because they were harder to see for predetors

Explanation:

the soot made the dark moths camouflage better, so they were hidden while whites were not so the whites got eaten with out reproducing while the blacks reproduced and birthed more blacks no I'm not racist lol ez to type w blacks ND whites tho

The main function of the circulatory system is to: Secrete (release) enzymesProduce hormones (testosterone/estrogen)Digest (break down) proteinsTransporting (moving) materials

Answers

To answer this question we need to look at each statement:

Secrete (release) enzymes: in this case is more propper of the digestive system since its function is to break food into usable nutrientes by the cells in the body.

Produce hormones (testosterone/estrogen): This is actually part of the endocrine system, that is in charge to produce and regulating hormone production.

Digest (break down) proteins: This is also part of the digestive system, as it was mentioned before their function is to break food into nutrients.

Transporting (moving) materials: This is correct, the circulatory system has the function to transport materials in and out of cells.

Which option describes a step in designing an experimental investigation?

O A. Identifying the variables that will be controlled for all experimental groups B. Writing a procedure that prevents other scientists from repeating the results C. Making sure that the hypothesis will be supported and not refuted O D. Collecting each piece of data in a different way so that there is more variety​

Answers

Answer:

a

Explanation:

because i studied like tht

Answer:

A. identifying the variables that will be controlled for all experimental groups

Explanation:

it is ;)

The model illustrates the relationship between
photosynthesis and aerobic cellular respiration. The
reactants needed by the plant for photosynthesis are
CO₂ and H₂O in the presence of sunlight. How does the plant
acquire the H₂O needed for photosynthesis?
A. From cellular respiration
B. Absorption through the roots
C. Osmosis through all plant parts
D. Transpiration through the leaves

Answers

Answer: B Absorption through the roots

Explanation: During photosynthesis plants take in carbon dioxide (CO2) and water (H2O)

Philippines depends primarily on fossil fuels as a main source of energy in different mode of transportation. Since this source is a nonrenewable, it means there will be a time that it will perish. As a STEM student, what can you do or suggest to solve this problem?

Answers

Improve the research area in renewable sources of energy and find ways to utilize nonrenewable sources of energy optimally.

Philippines depends primarily on fossil fuels as a main source of energy in a different modes of transportation. One solution to reduce the consumption of nonrenewable sources of energy is using electrical vehicles. Since electrical vehicles require battery power which works on electricity.

Although electrical energy is a clean resource it can be created using both fossil fuels and renewable sources. By producing electricity through renewable sources of energy we can reduce the consumption of fossil fuels. It means there will be a time that it will perish.

Also using fossil fuels optimally can increase the availability time of the fuels on a big scale. Hence renewable sources are the alternative.

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Describe the subunits and structures of the three types of cytoskeletal fibers and give at least one function of each.

Answers

Subunits and structures of the three types of cytoskeletal fibers are microfilaments, microtubules, and intermediate filaments.

Microfilaments help to create the forces used in cellular contraction and basic cell movements. They are also involved in cellular movement that includes contraction and cytokinesis .

Microtubules are involved in many functions that include assembly of mitotic spindle, in dividing cells, or axon extension inside neurons. They are also responsible for determining shape of the cell .

Intermediate filaments are involved in structural role by providing mechanical strength to cells and tissues. They are basically involved in the movement of the cell and generally found in hair , scales and finger nails .

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the incidence of down syndrome, also known as trisomy 21, increases with increasing maternal age. which of the following errors most likely produces this condition?

a. Nondisjunction during meiosis II in either the male and female gamete
b. Nondisjunction during either meiosis I or II in the female gamete
c. Nondisjunction during either meiosis I or II in the male gamete
d. Nondisjunction during meiosis I in either the male and female gamete

Answers

Option B. Nondisjunction during either meiosis I or II in the female gamete, most likely produces this condition.

Nondisjunction throughout both meiosis I and II can produce a gamete a good way to result in a trisomic zygote.  hazard elements for maternal nondisjunction of chromosome 21 are increased maternal age and altered recombination. Since the occurrence of Down syndrome will increase with maternal age, it's far possible that this error takes place in the female gamete.

The end result of a nondisjunction of chromosome 21 in a zygote that has forty-six, XY might be cells with 47 chromosomes. It happens due to an additional chromosome (chromosome 21) that originated in either the egg or the sperm. Throughout fertilization, 3 instead of two are present. A human born with Down syndrome inherits all or a part of a further replica of Chromosome 21. S

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Give a good Explanation and I Will Give Brainiest

Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation? Explain why.

Answers

The coloring of the peppered moths is an example of the differential reproductive success that leads to an increase in the frequency of certain phenotypes in a population.

What is differential reproductive success?

The term differential reproductive success makes reference to certain phenotypic features that may be considered adaptive in a given environment and therefore lead to higher reproductive fitness in the individuals that carry them.

The coloring of pepper moths indicates that they are more able to survive in environments having the same or similar colors in order to avoid the presence of predators that decrease their ability to survive and reproduce.

Therefore, we can conclude that differential reproductive success is the cause that explains why peppered moths have differential colors in industrial environments in order to avoid predators that decrease their ability to survive and reproduce in such environmental conditions.

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how are speciation and niches interconnected concepts?

Answers

Darwin postulated that competition within a niche was the driving force for diversification. In other words, if you can fill a new niche, your odds of successfully reproducing go up. He called it the "principle of divergence" and thought it was one of his most important epiphanies.

Contemporary biologists, on the other hand, would often contend that geographic isolation of a population is the most probable reason for speciation. Due to different niches being present in various places, two populations that were once connected are now isolated from one another. However, it is generally accepted that isolation rather than niche changes contributed more to the beginning of speciation.

Thus, isolation along with entirely untapped niches often accounts for the broad speciation seen in adaptive radiations.

Speciation? What do you mean by that?

The process of speciation is how populations become different species. Cladogenesis, the separation of lineages, was first described by the scientist Orator F. Cook in 1906. Cladogenesis is in contrast to anagenesis, which relates to phyletic evolution within lineages.

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how is carbon dioxide produced in cells removed from our body?​

Answers

Answer:

In the human body, carbon dioxide is formed intracellularly as a byproduct of metabolism. CO2 is transported in the bloodstream to the lungs where it is ultimately removed from the body through exhalation.

Which is a benefit that we get from
biodiversity?
A. over-hunted animals
B. production of oxygen by plants
C. deforestation of rainforests
D. air pollution

Answers

Answer:

B

Explanation:

Because it helps with good health and food nutition


2. The release of one phosphate group from ATP powers the reactions in the cell. Which phosphate is the one that is released from ATP?
NH₂
НО-Р-О-Р-О-Р-О-
ОН
О #4
#1
Assess It #16-Assess It
Biology Section 30VC/Quarter 1/Week of October 3/Wednesday, October 5/ Day 39
#2
ОН
# 3
# 2
N
ОН
+1
N-
N
ОН ОН
#4
D

Answers

When one phosphate group is removed by rupturing a phosphoanhydride bond during the process known as hydrolysis, energy is released and ATP is transformed into adenosine diphosphate.

When ATP degrades, which phosphate is released?

Adenosine diphosphate (ADP), a version of the nucleotide with only two phosphates, is created when the outermost phosphate of ATP is removed to give energy. By adding a phosphate group to another molecule, ATP can change another molecule to power biological processes (a process called phosphorylation).

How does ATP release energy that living cells can utilize?

The ATP molecule splits off one of its three phosphates when a cell has to expend energy to complete a task, resulting in the formation of ADP (Adenosine di-phosphate) + phosphate. It is now possible for the cell to use the energy that was previously bound to that phosphate molecule to carry out its operations.

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Which of the following are correct? (Select more than one answer) Select 2 correct answer(s) Question 4 options: A small amount of heat energy is transferred to a consumer on the next trophic level. A small amount of chemical energy is transferred to a consumer on the next trophic level. A large amount of heat energy is lost before predation. A small amount of heat energy is lost before predation.

Answers

The options that  are correct are:

Option A: A small amount of heat energy is transferred to a consumer on the next trophic level. Option D: A small amount of heat energy is lost before predation.

How can a food chain lose energy through heat?

The energy does not always move up the food chain from one level to the next. 90% of energy may be lost as heat (emitted during respiration), through motion, or in foods that people cannot digest. Decomposers can use the energy held in undigested items.

Note that Each trophic level's energy content diminishes as it progresses through an ecosystem. At any given trophic level, only 10% of the energy is transmitted to the next level.

Thus,  the remaining 90% is primarily wasted as heat during metabolic activities.

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energy that is not connected to useful energy is usually given off as

Answers

Answer:::::::::::::: heat                

Answer:

The energy not converted to sound energy (ability to do work) is usually given off as heat.

Explanation:

Uracil pairs with
Othymine.
Oany nitrogen base.
Ouracil.
O adenine.

Answers

Answer:

uracil pairs with adenine

Which of the following is NOT a prokaryote?
A. Fungi
B. E. Coli
C. Archaea

Answers

Answer:

Fungi

Explanation:

it is a eukaryote

Which is not a prokaryote?

In the given options, Saccharomyces is not a prokaryote as it is a fungus and hence a eukaryote. They have a well-defined nucleus and membrane-bound nucleus.

Label the letters below with the cell organelle.




Question 5 options:


nucleus



mitochondria



cell membrane



Golgi apparatus


1. B


2. I


3. E


4. H

Answers

Answer:

1. B is the nucleus

2. I is the cell membrane

3. E is the Golgi apparatus

4. H is the mitochondria

Botanical keys use (blank) contrasting statements which you must choose the most correct one. Enter a numerical answer.

Answers

Answer:

The keys are taxonomic literature based on the contrasting characters generally a pair called couplet.

Which of the following is phosphorus not used for?A. LipidsB. ATPC. NucleotidesD. Cell membrane

Answers

The correct answer is A. Lipids. Lipids in its simplest form are composed of long carbon chains. Lipids could have a phosporous group, in that case they are phospholipids. Phospholipids are found in cell membrane.

Answer: Cell membrane.

Explanation:

What type of solution is my gummy bear in ? Isotonic, hypertonic , or hypotonic ?

Prediction :

Claim :

Evidence :

Reasoning (Justification of claim):

Quantitative:

Qualitative:

Answers

Answer:

Hypertonic is your answer thanks me later✌️

An ameba moves and feeds by forming tempory bulges of the cell membrane called the ________.
A:
false arm
B:
cilia
C:
pseudopods
D:
sarcodines

Answers

Answer:

C. Pseudopods

Explanation:

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can anyone decompose 240 - 135 = 105 ?need new calculation after decomposing? help The balance on a credit card, that charges a 15.5%APR interest rate, over a 1 month period is given inthe following table:Days 1-3: $200 (initial balance)Days 4-20: $300 ($100 purchase)Days 21-30: $150 ($150 payment)What is the finance charge, on the average dailybalance, for this card over this 1 month period?finance charge = $ [?]Round to the nearest hundredth.Enter4 Natural disasters plague all areas of the world. In North America, the western coast of the United States experiences earthquakes, while the interior of the country is at risk for tornados. Areas of East Asia endure typhoons. Volcanic eruptions threaten places as far apart as Italy, Hawaii, Chile, and the Congo. What causes certain disasters to occur in certain areas? Which of the physical factors that youve studied impact the development of natural disasters the most? You have 7 moles of H2O. How many particles are present?(Avogadro's Number is 6 x 10^23) a 4.2 x 10^23 b 4.2 x 10^24 c 4.2 d 42 Which statement best characterizes Thorne's personal stance on the subject of technology (apart from hisopinion of the movie)?O a. Thorne believes the implications of technology should be considered before we all become swept up in anorganization like The Circle.Ob. Thorne believes The Circle is a metaphor for the corporate-controlled shadow government that seeks tomanage every aspect of our lives.Oc. Thorne believes that social media is going to destroy society because people will stop leaving their housesand do everything online.Od. Thorne believes that The Circle is exaggerating potential problems with social media; he feels that socialmedia is a great boon to society. Which inference most clearly identifies a theme of this excerpt Spiders, scorpions, and ticks belong to the class:a. Isoptera.c. Chordata.b. Crustacea.d. Arachnida.Please select the best answer from the choices providedABCD May I please get help with this. For I have tried multiple times but still could not get the correct answers for them or even plot it on the graph 90 degrees clockwise Which abolitionist was a conductor on the underground railroad and led violent attacks against slavery in kansas and harpers ferry before the civil war?. Asignacin: Leer el captulo 1 del libro: Pineda EB, De Alvarado EL, De CanalesEH. Metodologa de la investigacin. Manual para el desarrollo del personal desalud. Serie PALTEX para Ejecutores de programas de Salud No.35. OPS, segundaedicin. Washington, D.C., 1994. P 232. Luego de leer completando el cuadro acontinuacin la con los datos solicitados. Para completar use como referencia la pgina13 can someone help me on this The length of a violin string varies inversely as the frequency of its vibrations. A violin string 14 inches long vibrates at a frequency of 450 cycles per second. Find the frequency of a 10-inch violin string. A rental car agency charges $240.00 per week plus $0.25 per mile to rent a car. How many miles can you travel in one week for $477.50 If AC=19 and BC=7, find the length of AB. Bart has 1 1/4 hours to finish his three household chores if he divides his time evenly how much time can he give to each chore Which land characteristics would increase the value of a residential block?Select one:A square block with different tiersA rectangular block with a steep slopeA coastal block with a steep slope and water views Can somebody help me with this please ? (-35) divided by 7 =? Select the correct answer. which hormone levels are checked using a urine pregnancy kit to confirm a pregnancy? a. human chorionic gonadotropin b. estrogen c. progesterone d. testosterone The density of silver is 10.5 g/cm3. What mass of silver would occupy a volume of 56.0 cm3?