A teacher cut an apple into three wedges of the same size.
She dipped one wedge in lemon juice, dipped another in
water, and left one alone. Then she left the wedges on a
paper towel on her desk. After 1 hour, only the wedge that
had been dipped in lemon juice was still yellow. The other
two wedges had turned brown.
What is the responding variable in this experiment?

Answers

Answer 1

I am not entirely sure what you mean by "responding variable" but I'm going to guess  it was the vinegar since it has been used as a  perservative for years.

Hope that helps in some way.


Related Questions

Why is technology not the solution to all scientific problems?

Answers

Answer:

Science can not solve all of our problems. While scientific understanding can help battle things like disease, hunger, and poverty when applied properly, it does not do so completely and automatically. Furthermore, there are many areas of life where science can have little impact.

The function of the nucleic acids contained in the body cells of an organism is -

Answers

Answer:

Explanation:

Nucleic acids are the main information-carrying molecules of the cell, and, by directing the process of protein synthesis, they determine the inherited characteristics of every living thing. The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

7. Mrs. Everhart developed the theory that all bulldogs are great pets. After all her bulldog Meatball is a
wonderful dog! Is this statement a scientific theory? Why or why not.
finoccientific method

Answers

Answer:

No it is not a scientific theory.

Explanation:

An explanation of any aspect of the natural phenomenon of the world that can be tested several times and well supported by the evidence, and follows the scientific method. Furthermore known as scientific theory.

Presently, a logical hypothesis must meet a few rules, and one of those is that it must be upheld by a few (and free) strands of proof.  

For this situation, we have just one hypothesis, that bulldogs are great pet and Meatball is great among bulldogs, and it isn't sufficient, at that point it can not be a scientific theory.

Identify the chemical change below

A.a piece of wood burns in a fire
B.two pieces of paper are stapled together
C.a large log is cut into boards
D.water is removed by drying wet clothes on a laundry line

Answers

A peice of wood burns in a fire is the answer

state four diseases caused by viruses​

Answers

Answer:

measles, mumps, rubella, & chicken pox

Explanation:

Because viruses attack and multiply within certain cells causing disease.

Influenzas, measles, Rabies, and common cold

Plz help ASAP thanks!!

Sodium(Na), magnesium (Mg) and sulfur (S) are all in the same_____

A:group
B: Period

They have the same number of____

A:Valence electrons
B:Electrons shells

Answers

Answer:

Sodium, Magnesium, and Sulfer are all in the same period meaning they have the same number of electron shells.

Explanation:

Periods are rows in the periodic table. The number of Valence electrons grows across the period (left to right) until reaching the electron shell's capacity.

Groups occur in columns in the periodic table and all have the same number of valence electrons, and the number of electron shells increase as you move downward on the table

Explain what is meant by a compound. Give an example. How do compounds form?

Answers

Answer:

the two or more things that combined together is called compound.

Explanation:

example:

when the element NA and CL combine together form compound NACL.

At birth, what is the average number of red blood cells per
mm of blood?

Answers

Baby girls are 4.1mm
Baby boys a 3mm
5.1 million cells per cubic millimeter

the search for crude oil is known as​

Answers

Answer: answer below.

Explanation: Research for crude oil is also known as Petroleum.

Scientific laws and theories are both based on observations and evidence how are they different?

Answers

Answer:

theory explain why something happens and laws explain what happen

Explanation:

you can remember this because in the word theory there is the letter "y" so you can remember that theories explain "y"/ why

Laws explain what happen and you can remember it bc the last letter in law is w so you can remember w is what

Answer: a theory can change into a law, but a law can't change into a theaory

Explanation:

DNA and RNA are both A. Made up of nucleotides and carry molecules from one end of a cell to another B. Monomers of protein molecules that provide structure to a cell’s nuclear membrane C. Protein molecules that carry the unique genetic information of an organism D. Molecules that contain genetic information and are made up of nucleotides

Answers

Answer:

A

Explanation:

DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base.

The answer to this one is A

43, Square root of 40 , Square root of 13 , Square root of 7 , 14 over 9

Answers

Answer:

64

Explanation:

-identify the independent variable/dependent variable.

which plants grew taller:those in the experimental group or those in the control group?

-Describe why this is a controlled experiment.

Answers

Explanation:

a control group does not. They should be identical in all other ways.

Which element is found in nucleic acids but not in amino acids

Answers

Answer:

Phosphorus

Explanation:

Answer:

Phosphorus

Explanation:

I took the quiz

The stage of the stress response in which the pituitary gland releases a flood of adrenocorticotropic hormones is

Answers

Answer:

This is Alarm.

Explanation:

Adrenocorticotropic hormones and stress.

This the hormones secreted at the corticotrophs cells of the anterior pituitary glands.Its major function is to ensure the efficient functioning of the Adrenal gland and  body response to  stress.It is also mediate the secretion of cortisol from the cortex of the adrenal gland  into the blood stream.When it is released into the blood streams it binds to the receptors in the adrenal gland to stimulate the release of cortisol hormone.

ACTH controls  diurnal (circadian) rhythm in human.This is because it peaks in the morning and progressively reduced  towards the end of the day,with lowest concentration  during  period of sleeping.

Generally stress either by dehydration or  internal complications,leads to increase in solute potential of the blood.Stress increases the activation of ACTH from the adrenal gland while boosting the concentration of cortisol. When the stress is sensed by the brain,this causes the release of  corticotrophin-releasing hormone into the bllood.

The latter cause the discharge into the blood stream of ACTH via hypothalamic–pituitary–adrenal (HPA) axis.As this enters the blood it binds to the receptors  for the cortisol secretions in the cortex of the  adrenal gland to produce cortisol as explained earlier.Cortisol is the primary sex hormone which create the alarm.

The three factors that created gemstones are??
I need an answer asap​

Answers

Answer:

Molten rock and associated fluids. Environmental changes. Surface water. Gem formation in the Earth's mantle.

Which one of these is not a volcanic island arc? (Consult a plate tectonic map if needed) Group of answer choices Hawaiian Islands Japan Indonesia Aleutian Islands

Answers

Answer:

Hawaiian Islands

Explanation:

A volcanic arc is made of volcanoes and is formed above the subducting plate and examples include the marina island in the pacific ocean and lesser Antilles. Sundra arc is a volcanic arc and the Hawaii islands are an example of the linear chain of volcanoes.

Which of these would be a disadvantage when forming a fossil? hard body parts buried quickly high oxygen atmosphere high pressure

Answers

Answer:

c

Explanation:

usatestprep

The disadvantage when forming a fossil is a high oxygen atmosphere, which is the second option, as the high oxygen atmosphere can lead to the rapid decay of organic matter, making it less likely to be preserved.

What is a fossil?

Because oxygen is a reactive gas that can decompose organic material when exposed to high temperatures and pressures, fossils will be destroyed in such a climate, which is why fossils are more commonly found in environments with low oxygen levels, such as deep underwater sediments or anaerobic environments like swamps and bogs. One of the main factors that determines whether or not an organism will be fossilized is the speed at which it is buried after death, if an organism is buried quickly, it is less likely to be disturbed or exposed to scavengers.

Hence, the disadvantage when forming a fossil is a high oxygen atmosphere, which is the second option.

Learn more about the fossil here.

https://brainly.com/question/2288828

#SPJ6

the question is incomplete, complete question is below

Which of these would be a disadvantage when forming a fossil?

hard body parts buried quickly

high oxygen atmosphere

high pressure

ASAP! What is the control variable?

Answers

the controlled variable is an element that is not changed throughout an experiment, because it’s unchanging state allows the relationship between the other variables being tested to be better understood.

Answer:

A control variable is the element that is constant. it does not change throughout the experiment as it helps researchers understand the effect of what's being tested by comparing it to the control variable.

When members of populations do not mate with each other or cannot produce fertile offspring, they are

Answers

Jorge hailey manny Harley

is wind alive?
Does it grow, reproduce, respond to stimuli or evolve?

Answers

Answer:

Nope

Explanation:

Wind is neither living or dead. Wind does not grow, reproduce, respond to stimuli or evolve. Wind is just wind

Wind is neither dead or alive

Give one example of how the testing of Platismatia glauca could benefit future ecological research of this forest.

Answers

Answer:

Testing Platismatia glauca could help scientists understand which pollutants have the largest effect on lichen populations. It also may help scientists understand the current pollutant levels in the atmosphere compared to the population of lichens on the trees. This information can help them more accurately predict population changes over time.

hope this helps:)

TOR kinases are enzymatic proteins found in a diversity of species, from yeasts to mammals. They serve in a phosphorylation cascade that promotes progression through the cell cycle. What evidence would confirm that eukaryotes share a common ancestor with regards to cell signaling pathways?

Answers

Answer:

By phylogenetic analyses  

Explanation:

The target of rapamycin (TOR) is a major regulator of growth only found in eukaryotic organisms. The TOR pathway is known to regulate critical cellular processes including, among others, cell growth. The TOR protein is a kinase capable of activating translation by phosphorylation of the ribosomal S6 kinase (S6K) and the eukaryotic translation initiation factor 4E binding protein (4E-BP). In this regard, phylogenetic studies have shown that this pathway involves duplication events of ancestral kinases, as well as sub-functionalization of the S6K kinase.

Describe the effect of an enzyme in lowering the activation energy.



Answers

Answer:

Features of Enzyme Catalyzed Reactions

Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind.

Explanation:

List the characteristic features of epidermal cells.

Answers

Answer:

Epidermal cells are tightly linked to each other and provide mechanical strength and protection to the plant. The walls of the epidermal cells of the above ground parts of plants contain cutin, and are covered with a cuticle.

Match the level of ecological organization described by each of the statement below. The birds,insects,plants,fungi, and other organisms that reside in a nearby wetland

Answers

Answer:

Community

Explanation:

The community is the compilation of the different plant and animal species population in a designated area  at a particular time that interact with each other. The different species in a community have interactions with one another based on trophic levels and the supply and provision of nutrition for survival

The ecological level above the community level is the ecosystem, which is concerned with the biotic and abiotic interactions

Beloe the community level is the population, which are the number of a particular species in a location at a given point in time.

what is the answer I really need it quick plz

Answers

The first one and the fourth one

Evolutionary processes have resulted in approximately _____________ million species, of which 1.4 million species have been described.

Answers

Answer:

1.mm

Explanation:0000000044444444444

Question 2 of 10
Methane gas is burned to provide heat. The chemical reaction for this
process is shown in the equation below.
CH4 + 202 -> CO2 + 2H20 + energy
What are the products in this chemical reaction?
A. O2 + CO2 + energy
B. CO2 + CH4
C. CO2 + 2H20 + energy
D. CH4 + 202
9

Answers

Explanation:

The chemical reaction is represented by a chemical equation where we use some basic elements like:

Reactants are kept on the left hand side.Products are kept on the right hand side.They are divided by a arrow which hear towards the products.

This shows that reactants are forming or giving rise to different products in the reaction.

Back to the Question:

Here a chemical reaction is taking olace, where methane is being burnt in the presence of oxygen to form the products Carbon dioxide, water and energy.

Methane + Oxygen ➝ Carbon dioxide + water + energy.

So, the arrow head is towards the CO2, H2O and energy, so they are products according to the above explanation.

Correct option is:

[tex] \large{ \boxed{ \bf{ \purple{Option \: C}}}}[/tex]

And we are done !!

#CarryOnLearning....

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Choose all of the physical changes:

(There are FOUR)



Group of answer choices

tarnish

evaporate

bend

react

melt

explode

dissolve

Answers

Answer:

evaporate, bend, melt, dissolve

Explanation:

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