Nicholas has been biting his nails since he was a kid. He wants to break the habit so he puts bitter-tasting nail polish on his left hand and leaves his right hand without polish. After 3 days he notices his nails on his left hand have grown but he continued to bite his right-hand nails.
A. Independent Variable=
B. Dependent Variable=
C. Control=

Answers

Answer 1

Answer:

Independent: Putting the nail polish

Dependent: nail growth

Control: right hand, without polish

Answer 2

The experiments are known to have various variables. In Nicholas's case, nail polish is an independent variable, nail growth is a dependent, and right nails without polish are a control.

What are independent variables?

Independent variables are defined as the test variables that in an experiment are not constant but are kept varied and manipulative causing various effects on the result of the hypothesis. Putting the bitter nail polish on the nails of the left hand is a test variable.

The dependent variable (outcome variables) along with independent results in cause and effect and are conditional on the independent factors. The length of nails is dependent as it is affected by the nail-biting.

On the other hand, the control variables are constant in that the factors are limited so that they do not interfere with other factors that affect the outcome. Fingernails on the right hand with no polish are controlled.

Therefore, nail polish is an independent variable.

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Related Questions

I need help with my biology work please

Answers

I did the. work on this piece of paper and the only reason I'm typing here is because I need an answer to submit

Does fertilizer make a plant grow bigger? Amount of fernalizer measured in grams, quantitiesnof water measured in milliliters

Answers

Answer:

Yes, fertilizer can make plants grow bigger due to the nutrients it can provide to the soil and plants.

A cell converting food into energy and removing waste products are examples of:
a. Photosynthesis
b. Pinocytosis
c. Homeostasis
d. Evolution

Answers

Answer:

A

Explanation:

why does the density of liquid water increase as it cools?

Answers

When objects solidify, the molecules vibrate in place which cause the object to become denser since the molecules are holding in place rather than spreading like a liquid or gas

The density has been inversely proportional to the volume of the substance and the temperature. The density of the liquid water increases as it cools as the temperature decreases.

What is the relation between density, volume, and temperature?

The density of the substance has been defined as the place occupied by the substance in a liter or milliliter of solution. It has been known to show an inverse relationship between volume and temperature.

As the liquid water cools down its temperature starts decreasing which causes the collision of the particles and kinetic energy to decrease leading to decrease in the volume of the matter as particles start moving close to each other.

As a result, the volume of the substance gets decreases which inversely affects the density of the material. The decreased volume increases the density of the substance. Hence, density shows an opposite reaction to the factors like temperature and volume.

Therefore, an increase in density is due to a decrease in the volume of the matter.

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The monomers of DNA are composed of?

Answers

Answer:

The monomers of DNA are composed of nucleotide.

Answer:

sugar, phosphate residue and a base or Nucleotide's

Explanation:

DNA consists of two long polymers that run in opposite directions forming the regular geometry of the double helix. The monomers of DNA are called nucleotides. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue.

please give me brainley for this

nobody can answer this by their own part 2​

Answers

C , A , A this is the answer
stick insect
dragonfly

Driving from Maine to Florida, you observe that squirrels living in the southeastern United States are much thinner than squirrels living in the northeastern part of the country. You tell your friend that you have a theory that squirrels living in the northeast have greater fat reserves for the winter months when food is scarce. Which of the statements are true? Select all that apply.

Answers

Answer:

See the options and the answer below

Explanation:

The available options to the question are:

Your statement is a valid scientific theory. Your statement uses the word "theory" in a non-scientific, colloquial way. Your statement is a hypothesis rather than a scientific theory. Your statement is not a theory but a fact.

The correct answer would be that:

the statement uses the word 'theory' in a non-scientific, colloquial way. the statement is a hypothesis rather than a scientific theory.

A hypothesis is a generalized statement with little or no experimental test. When a hypothesis is tested using a suitable experiment (s), it can either become valid or invalid. In order words, hypotheses are falsifiable. A theory on the other hand is a hypothesis that has been tested several times by independent researchers and found to be true.

In the illustration, the statement made concerning the squirrels is based purely on guess and not on fact. The use of the word 'theory' in the statement is totally unscientific. Only suitable experiments can prove or disprove the statement.

The correct options are 2 and 3.

which statement describes the cell cycle​

Answers

Answer:

I  think c

Explanation:

Answer:

It is C

Hope it helps ;)

which of the following is most consistent with the modern theory of evolution​

Answers

The correct answer is Parents pass their physical traits to their offspring; those offspring with traits that help them survive in their environment are able to reproduce.

Explanation:

The modern theory of evolution explains the mechanisms that make organisms change. One of the main ideas this theory proposes is that organisms with traits that help them survive or reproduce have higher chances to pass their genes and traits to new generations. This mechanism makes certain traits to be favored and contributes to the evolution of organisms because after multiple generations certain traits will prevail while others will be eliminated.

Moreover, this theory specifies genes in an organism are not acquired or modified during its life but these are the results of the traits passed to the organism by its parents and evolution occurs only after a long time or multiple generations. According to this, the first option is the correct one.

Help due tomorrow!!

Answers

Answer:

6(carbon dioxide) + 6(water) --> Glucose + 6(oxygen gas)

The following equation is balanced.

Both have 6 carbon atoms,

both have 12 hydrogen atoms,

and both have 18 oxygen atoms.

Which of the following is a polysaccharide often responsible for providing structure to plants?
A. Amylose
B. Cellulose
C. Glucose

Answers

Answer:

Explanation:

The anwer is B

7. When did whale ancestors begin living full time in the water?

Answers

around 40 million years ago

The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.

Diffusion is an example of

a) passive transport

b) phagocytosis

c) endocytosis

d) active transport

Answers

Explanation:

Diffusion is an example of

a) passive transport

Answer:

[tex]\boxed {\tt A. \ Passive \ transport }[/tex]

Explanation:

First, let's define diffusion.

Diffusion is the movement of particles from areas of high concentration to low concentration. This movement is also known as moving down a concentration gradient. This process of diffusion occurs without any energy.

Since it doesn't require energy expenditure, diffusion is an example of passive transport.

Therefore, the correct answer is A. passive transport.

Leigh has collected data and performed statistical
tests for analysis. Describe the conclusions she can
draw about the data based on her analysis.

Answers

Answer:

She will obtain results to support -or reject- her working hypothesis. These results are subjected to statistical analyses in order to confirm that they are statistically significant

Explanation:

The scientific method is a rigorous process that consists of raising a working hypothesis, which is tested by experimentation or observational procedures and analysis of the results. The statistical analyses may have key roles during this procedure. In an experiment that involves statistical analyses, the results are subjected to statistical measures to evaluate the significance level and thus confirm (or reject) the statements made in the working hypothesis. The p-value is one of the most used statistical measures to determine if differences are due to randomness, or they are statistically significant.

Answer:

Because the calculated chi-square value of 5.19 is less than the critical value of 7.82, the null hypothesis can be supported. She is 95% confident that there is no significant variation in shell color along the beach coastline.

Explanation:

this is the Sample Response

While you were on safari, your friend got bit on the leg by a posionous snake and nearly died from excessive hemolysis. Being a true scientist, you captured the snake and analyzed its venom to understand why it caused hemolysis. You found thwo enzymes, a protease (breaks down proteins), and a phospholipase. He isolated each of these enzymes and treated red blood cells with them. He found that only phospholipase caused red blood cell lysis. He also found that, after treatment of red blood cells with the phospolipase, there was excess amounts of free phosphophorylcholine (Choline phosphate group) and free diacylglycerol (glycerol with two hydrocarbon tails). 1.) What is the substrate for phospholipase and where does it cleave

Answers

Answer:

Phospholipase is an enzyme, which is classified into phospholipase A2 and phospholipase A1.

In this case we are talking about phospholipase A2, that is why the sn-2 ester bond of glycerophospholipids will be taken as a substrate, giving fatty acids as a product, such as arachidonic acid.

Explanation:

The glycerophospholipids used by this enzyme are those found in cell membranes, these pathways are usually associated with inflammation pathways for the formation of arachidonic acid that functions as an immunological mediator.

On the other hand, it must be remembered that membrane phospholipids are amphipathic, that is, with hydrophilic and hydrophobic molecules and are responsible for balancing the internal homeostasis of the intracellular environment.

What are the two divisions of the autonomic nervous system?
A. sympathetic and central nervous systems
B. central and somatic nervous systems
C. sympathetic and parasympathetic nervous systems
D. parasympathetic and somatic nervous systems

Answers

The two divisions of the autonomic nervous system are the sympathetic and parasympathetic nervous systems. The correct option is C. sympathetic and parasympathetic nervous systems.

Nervous system

From the question, we are to determine the two divisions of the autonomic nervous system.

The nervous system is divided into two main parts, which are

Central nervous system.Peripheral nervous system.

The central nervous system is made up of the brain and the spinal cord, while the peripheral nervous system is made up of the nerves and ganglia that lie outside of the brain and spinal cord.

The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system.

The autonomic nervous system is further divided into the sypathetic nervous system and the parasympathetic nervous system.

The sympathetic nervous system is for fight or flight responses, and

The parasympathetic nervous system is for rest and digest responses.

Hence, the two divisions of the autonomic nervous system are the sympathetic and parasympathetic nervous systems. The correct option is C. sympathetic and parasympathetic nervous systems.

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HELP ASAP! Please help me with these 5 questions, they'd mean a lot! Giving you all my points, please answer.

1. Condensation is the basis by which ______ are formed both in the sky and near the ground as fog.

2. Evaporation occurs when the _______ heats up water in rivers, lakes, or the ocean and turns it into vapor or steam.

3. The Earth water cycle is responsible for all the _______ on the Earth.

4. The water in the atmosphere usually gets into the atmosphere by the way of ______.

Answers

Answer:

1. Condensation is the basis by which water droplets are formed both in the sky and near the ground as fog.

2. Evaporation occurs when the sun heats up water in rivers, lakes, or the ocean and turns it into vapor or steam.

3. The Earth water cycle is responsible for all the water on the Earth.

4. The water in the atmosphere usually gets into the atmosphere by the way of transpiration.

Explanation:

I hope this helps you:) I'm sorry if some of them are wrong... I did my absolute best.

Which of the following characteristics can be utilized to classify and categorize viruses?
Type of nucleic acid
Hosts infected
Strandedness of nucleic acid (positive/negative sense)
Capsid shape
Gram stain category
Colony growth characteristics
Presence or absence of capsule
Presence or absence of envelope
Disease symptoms
Fermentation of different sugars

Answers

Answer:

Type of nucleic acid

Strandness of type of nucleic acid (positive /negative)

colony growth characteristics

Hosts infected

Capsid shape

Disease symptoms

presence or absence of envelop

presence or absence of capsid shape

Explanation:

The characteristics that can be utilized when classifying/categorizing viruses are :

Type of nucleic acid

Strandness of type of nucleic acid (positive /negative)

colony growth characteristics

Hosts infected

Capsid shape

Disease symptoms

presence or absence of envelop

presence or absence of capsid shape

The Remaining two categories i.e Gram stain category and fermentation of different sugars cannot be used to classify or categorize viruses but they can be applied for the categorization of Bacteria

What step of the scientific method immediately follows "state the problem"?
A. Draw conclusions.
B. Make observations.
C. Form a hypothesis.
D. Design an experiment.

Answers

Answer:

c

Explanation:

before you can do a, c, or d you must form a hypothesis to be tested.

Metals are used in many products because of the characteristic properties that most metals have. Which product requires the high luster of metals in order to
work?
Answer: A mirrors
B. pots and pans
Cfood wrap
D.circuit boards

Answers

Answer:

the correct answer would be c

Explanation:

Answer:

A

Explanation:

The correct answer is A; Mirrors

The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called

Answers

Answer:

Facilitated diffusion

Explanation

Generally when molecules undergo passive diffusion along their concentration gradient,and aided by the cell membrane which provide hydrophillic areas for the molecules to pass through,this is called  facilitate the diffusion.The membrane would be impermeable to these molecules without the proteins,

It is a special transport mechanism for large molecular substances like glucose and Amino acids and ions  e.g Na+ and K+.Therefore facilitated mean to aid,thus the membrane proteins aids or help molecules to pass through.

Channel protein and carrier proteins are the two type of protein involved in the transport.They are specific for each molecules,and would only allow the passage of one molecule or ion through.

Energy is not needed for this to occur place the molecules of glucose are moving along the concentration gradient.

Specifically channel proteins are fixed in shape,some are gated.They are water filled pores Carrier proteins are flexible and adjust their shape to the two media for transport.Thus if the concentration of substances to be transported i s higher on on side A of the cell membrane proteins,the carrier protein will be open to  that side to convey the molecules across.

The amount of molecules transported depend on the amount of the  carries and channel protein available.

Which objective is referred to as the "scanning objective"?

Answers

Answer:

This question lacks options; they are:

a. 4x b. 10x c. 20x d. 100x

The answer is A

Explanation:

The objective lens is an integral part of a light microscope as it provides the viewer with the picture or image of the specimen. There are several types of objective lens depending on their magnification.

The lowest possible objective lens with the power of 4x is called the SCANNING OBJECTIVE. In combination with the eye/occular lens, it provides a magnification of 4x × 10 = 40x. The name of this lens comes from the fact that it provides a full scan of every part of the specimen being viewed before diversifying into a specific region by changing the objective.

Help due tomorrow!!!

Answers

Answer:

approximately 5,730 years

Balance this equation ​

Answers

Answer:

6CO2 + 6H2O → C6H12O6 + 6O2

Explanation:

What organelles are found in a Fly muscle

Answers

Answer:

Organelles of the muscle cell are also named slightly differently: the plasma membrane is called sarcolemma; the cytoplasm is sarcoplasm, and the endoplasmic reticulum is sarcoplasmic reticulum. Skeletal muscle cells have many nuclei along their membrane.

Explanation:

hopefully that helps you

Explain negative feedback.

Answers

This occurs when a function of the output of a system or process is fed back, reducing the changes in the output.

According to erikson theory which stage of social development is related to adulthood?

CHOICES: A. Trust vs. Mistrust
B. Intimacy vs. Isolation
C. Initiative vs. Guilt
D. Autonomy vs. Shame​

Answers

Answer:b

Explanation:

Are individual organelles (cell structures) living? Defend your answer.​

Answers

Answer:

the cell structure is living

Explanation:

CELL! cells are living

Which statement describes our Solar System?
O A. The Solar System is made of a very large collection of stars, gas, and dust bound together by gravity.
OB. The Solar System is made of a large planet with moons and other satellites in orbit around the planet.
O C. The Solar System is made of a group of planets orbiting at various distances around a large, central star.
O D. The Solar System is made of a group of galaxies and intergalactic gases bound together by gravitational attraction.

Answers

Answer:

B

Explanation:

how were the designs of pasteurs and redis experiment diffrent

Answers

Redi experimented with rotting meat and Pasteur experimented with broth. ... Both experiments showed that living things only come from living things.
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