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Question 14

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Question 14

Anita was using steel to make rusted sculptures. After building each sculpture, she caused the steel in the sculpture to rust by placing it into a tub filled

with salt water for eight hours. Anita wondered if steel would rust faster submerged in vinegar instead of salt water. To find out, Anita cut ten squares of

steel sheet metal and split them into two equal groups. She put one group of squares into a tub filled with salt water and the other group of squares

into a tub filled with vinegar. Once an hour for eight hours, Anita counted the number of rusted steel squares in each group.

What is the manipulated/independent variable in Anita's experiment?

A

number of rusted squares

B

time left in the liquid

ООО

С

the number of metal squares

D

the type of liquid the squares were placed in

©2020 Illuminate Education, Inc.

Answers

Answer 1

Answer: D.  the type of liquid the squares were placed in

Explanation:

An independent variable is required to be changed in an experiment which can observe the changes in the dependent variable, which is the outcome of the experiment.

The type of liquid used to rust the steel squares is the independent variable of the experiment and dependent variable is the rust on steel.  


Related Questions

How is ADP converted to ATP?
by the addition of one adenosine molecule

Answers

Answer:

Two processes convert ADP into ATP: 1) substrate-level phosphorylation; and 2) chemiosmosis. Substrate-level phosphorylation occurs in the cytoplasm when an enzyme attaches a third phosphate to the ADP (both ADP and the phosphates are the substrates on which the enzyme acts).

Both strands of the DNA double helix contain nitrogenous bases held together by hydrogen bonds. In DNA, the sequence of nitrogenous bases varies widely. What is the significance of the nitrogenous bases? (6A) Question 4 options: They determine the amino acids in the proteins synthesized. They prevent mutations from occurring in the process of DNA replication They help complete the sugar-phosphate backbone of DNA molecules. The amount of adenine and cytosine determines the length of the gene on a DNA molecule.

Answers

Answer: They determine the amino acids

Explanation: The sequencing of the bases directly code for the amino acids. If anything changes, it would change the code, and could possibly create a different gene all together.

The significance of the nitrogenous bases is that they determine the amino acids in the proteins synthesized.

DNA:

Deoxyribonucleic acid is a biological molecule that stores genetic information in living cells.

DNA is a polymer made up of monomers called nucleotides. In the nucleotide subunits of DNA, nitrogenous bases are one of the components.

The sequence of nitrogenous bases in DNA molecules varies from one another. This is because the sequence determines the sequence of amino acid that will form proteins when translated.

Therefore, the significance of the nitrogenous bases is that they determine the amino acids in the proteins synthesized.

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Cheryl has a mug that she says is made up of matter. Heather says that the hot chocolate inside the cup is made up of matter, too. Keaton says that the steam coming from the cup is also made up of matter. Mikayla says that none of it is matter because matter is too small to see. Which best describes who is correct? Cheryl Cheryl, Heather, and Keaton Cheryl and Heather Mikayla

Answers

Answer:

Mikayla because matter is too small to see , even with a powerful microscope

Explanation:

Answer:

Cheryl, Heather, and Keaton

Explanation: Edge 2021

Hope this helps! :)

Please vote me brainliest <3

4) What are the processes in which
materials move through a cell membrane?

Answers

Answer:

Diffusion

Explanation:

yeah

Answer:

simple diffusion

Answer this Multiple Choice:
How does kinetic energy transfer when
you pour cold milk into hot coffee?
Energy transfers from the milk. What is your reasoning?
Energy transfers to the milk.
Energy transfers to the coffee.
None of the above
Students, draw anywhere on this slide!

Answers

Answer:

Energy transfers from the milk

Explanation:

The kinetic energy of the particles in cold milk is low. They are all moving slowly. When you pour cold milk into hot coffee, the milk and coffee particles start to collide When a high-energy coffee particle hits a low-energy milk particle, energy transfers. The coffee particles slow down, and the cup of coffee cools down.

Energy transfers from the milk because when you pour the milk in, the coffee will be colder than it was before. Therefore, the milk makes the impact and which is why the energy is transferred from it.

Label each image as containing atoms only, molecules that are not compounds , or comppunds.

Answers

Answer:

can u put the image pls

Explanation:

Pls help



It will mean a loy

Answers

Answer:

c would be the most accurate.

Explanation:

If samples of silver and lead each had volumes equal to 1 cm3, which sample would have the greater mass? What would the difference in the masses be?

Answers

The answer would be lead.

Explanation: Lead has a higher density than silver.

Which of the following is not an element?
O A. sodium chloride
O B. nitrogen
O C. hydrogen
O D. oxygen
O E. magnesium

Answers

sodium chloride is not an element

during which eclipse does the full moon move through Earths shadow?

Answers

Answer:

A lunar eclipse occurs when the Moon moves into the Earth's shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy) with Earth between the other two, and only on the night of a full moon.

Explanation:

pls make me brainliest

Analyze the graph below and identify the points where the population is stable at the carrying capacity. ​

Answers

Answer:

To find carrying capacity on a graph, you need to locate the point on the graph where the population line is horizontal. Alternatively, the carrying capacity may be explicitly marked with a dotted horizontal line or a horizontal line of a different color.

Explanation:

i dont know if this is right but hope this helps

The carrying capacity on a population growth graph is the level at which the population stabilises and achieves equilibrium as a result of the environment's resources.

What is the reason for the equilibrium ?

This equilibrium happens as a result of the population curve plateauing as the limiting elements, such as food, water, and space, start to restrict the population's ability to grow.

The carrying capacity is symbolised graphically by a horizontal line on the graph, signifying that the population has reached its limit and cannot grow any further.

This horizontal line can be clearly identified on the graph by a dotted line or a different colour. Alternatively, the population line's horizontal intersection with the point where it stops growing can be used to determine the carrying capacity.

A constant condition of population has been reached.

It is crucial to remember that a population's carrying capacity can alter over time owing to a variety of variables, such as changes in the climate or improvements in technology that make resources more accessible.

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(30 ponits!!!!!) I have no idea how to do this, please please only accurate answers

Create your own monster!! (4pts/trait) Use the following chart to determine the traits that your monster will
have. The DNA code for each trait is given, so you will need to go through the process of transcription and
translation to determine what protein is being made and then match that with the corresponding trait. You may
even include a picture of your monster if you are feeling creative!

Round body Tall/skinny body One head Two heads
Ser-Arg-Lys Ser-Arg-Asn Cys-His-Tyr Cys-His-Trp

Tail No tail Long hair Short hair
Val-Asp-Gly Val-Asp-Glu Leu-Thr-Pro Leu-Thr-Ala

a. Body Shape:
DNA code- AGTGCCTTG
RNA code- ___________
Amino Acid sequence (aka protein)- ___________________
Body shape- _______________________

b. Number of Heads:
DNA code- ACGGTGACC
RNA code-______________
Amino Acid sequence (aka protein)- ___________________
Number of heads- _____________________

c. Tail or No Tail:
DNA code- CAGCTGCCC
RNA code- _____________
Amino Acid Sequence (aka protein)- ___________________

Tail or no tail?- _____________________

d. Hair Length:
DNA code- AATTGGCGG
RNA code- ___________
Amino Acid Sequence (aka protein)- ___________________
Hair length- _____________________

Answers

Answer:

a. Body Shape:  

DNA code- AGTGCCTTG

RNA code- _UCACGGAAG__________

Amino Acid sequence (aka protein)- ___Ser-Arg-Lys________________

Body shape- __Round Body_____________________

b. Number of Heads:

DNA code- ACGGTGACC

RNA code-__UCGCACUGG____________

Amino Acid sequence (aka protein)- ___Cys-His-Trp________________

Number of heads- ____2_________________

c. Tail or No Tail:

DNA code- CAGCTGCCC

RNA code- _GUCGACGGG____________

Amino Acid Sequence (aka protein)- ___Val-Asp-Gly________________

Tail or no tail? - ____They have a Tail_________________

d. Hair Length:

DNA code- AATTGGCGG

RNA code- _UUAACCGCC__________

Amino Acid Sequence (aka protein)- ___Leu-Thr-Ala_______________

Hair length- _Short hair____________________

I got 100% on this assignment btw

Why it is important to have a standard unit measurement system?

Answers

Answer:

because it allows scientists to compare data and communicate with each other about their results.( Metric System )

Explanation:

A standard measurement system is important because it allows scientists to compare data and communicate with each other about their results. Metric System – is a measurement system based on the number 10.

Which of the following takes place in the light-dependent reactions
of photosynthesis?

a. Sugars are made.
b. Energy is captured.
c. Chlorophyll is pumped.
d. CO2, is formed.

Answers

Answer:

I think (b) is correct but I think ..

Energy is captured during light-dependent reactions of photosynthesis (Option b).

Photosynthesis refers to the metabolic reactions that produce simple carbohydrates (e.g., glucose) by using the energy from the sun.

The photosynthetic reactions can be divided into light-independent reactions and light-dependent reactions.

The light-dependent reactions capture energy and light-independent reactions produce simple carbohydrates.

In conclusion, energy is captured during light-dependent reactions of photosynthesis (Option b).

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Use the words haploid cell, diploid cell, and fertilization all together in a sentence.

Answers

Answer:

The sexual life cycles involve the alternation between meiosis and fertilization. Meiosis is a process where the diploid cells gives a rise to haploid cells, and fertilization is the process where two haploid cells (gametes) fuse to form a diploid zygote.

Explanation:

Hope this helps

Using the words haploid cell, diploid cell, and fertilization all together in a sentence -  Fertilization is the union of two unicellular, haploid gametes to produce one unicellular, diploid zygote.

The process of combining the male gamete, or sperm, with the female gamete, or ovum. The product of fertilization is a cell called a zygote.

Fertilization takes place when two haploid cells fuse together such as sperm cells and egg cells.Haploid cells have a single set of chromosomes.The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes that fuse during fertilization.Diploid cells are a cell that contains two sets of chromosomes that are formed after fertilization also called a zygote.

Thus, the correct sentence would be - Fertilization is the union of two unicellular, haploid gametes to produce one unicellular, diploid zygote.

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What structure in humans allows oxygen to pass into the blood?
A) Mouth
B) Alveoli
C) Nose
D) Heart​

Answers

Answer:

B

Explanation:

the alveoli is a part of the lungs that allows for transfer of oxygen and carbon dioxide in your blood when breathing.

Answer:

B

Explanation:

why cant fish gills function if the fish is not in the water ?​

Answers

Many species of fish use a system of gills to obtain their oxygen from the water. Gills are designed with a high surface area of capillaries that bring the blood close to the water to exchange oxygen and carbon dioxide

1. In the system shown below, there are 80 x particles, all in region A (the left half of the box). No extra particles can enter the system. When the system is in

equilibrium, what will be true of the particles?

A Since there are no y particles, the system is already in equilibrium with ail 80 x particles in A

B. Due to the constant motion of particles, this system will never reach equilibrium

C. In equilibrium, there will be exactly 40 x particles in A and 40 x particles in B, and those numbers will remain constant

Din equilibrium, there will be approximately 40 x particles in A and 40 x particles in B, and those numbers will fluctuate but will remain near 40

Answers

Answer:

The correct answer is - option D. in equilibrium, there will be approximately 40 x particles in A and 40 x particles in B, and those numbers will fluctuate but will remain near 40.

Explanation:

Equilibrium is the condition where all the condition is where all the factors or influence forces are balanced in a particular system. The perfect balanced condition is not easy to get or can not remain constant for long.

In this example, both  A and B get 40 x particles to be in equilibrium however fluctuation persists but still approx 40 remains.

Thus, the correct answer is - option D

Which is a function of a protein macromolecule? A. Insulating organs in the body from harm B. Providing leaves with waterproofing C. Providing codes for bullding organs D. Transporting other molecules in the body​

Answers

D) Transporting other molecules in the body.

Explanation: The function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body.

Answer:

D is correct i just took the test

Explanation:

why can only massive stars form black holes ? ( describe )

Answers

the natural consequence of the evolution of massive stars. Neutron stars have an upper mass limit of 2 to 3 solar masses. A collapsed object of greater mass will continue to collapse indefinitely, forming a black hole.

The inevitable result of the development of enormous stars. The maximum mass of neutron stars is 2 to 3 solar masses. A more massive collapsed item will keep collapsing forever, eventually creating a black hole.

What is a Black hole?

Space-based black holes are regions of extreme density that produce large gravity wells. Even light cannot escape the strong pull of a black hole's gravity once it reaches a specific area. And in a theorized process fittingly known as spaghettification, anything that gets too close, be it a star, planet, or spaceship, will be stretched and squished like putty.

According to the question, A supernova is a star that explodes brightly when it is dying. A supernova can happen when a star loses heat at its core, causing it to eventually collapse. This kind of supernova results from the death of huge stars. They take place in galaxies with active star formation and an abandoned black hole or neutron star.

Supernovae can also happen when one star collides with another as it orbits another. In a white dwarf, this happens. This can happen in a very old star cluster, which is a component of a binary system and leaves no compact object in its wake.

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In the absence of oxygen, the cell's ability to convert the stored energy of glucose to usable ATP

Answers

I believe the answer is greatly decreases!

In the absence of oxygen, the cell's ability to convert the stored energy of glucose to usable ATP is greatly decreased. Thus, the correct option is C.

What is Cellular respiration?

Cellular respiration is the process through which the biological fuels are oxidized in the presence of an inorganic electron acceptor such as the oxygen atom to produce large amounts of energy, to drive the bulk production of ATP (adenosine triphosphate) in the mitochondria.

The purpose of cellular respiration is to provide the body cells with the energy which they need to function. If living things could not get the energy which they need out of food, it would be absolutely worthless for them. All living things would eventually die, no matter what the quality and amount of food.

Therefore, the correct option is C.

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Is Testosterone and estrogen a peptide bond

Answers

Ahahahahhqhqhqhqhhahqh very funny fish bone I eat fish bone I eat fish bone I eat Aldiss. Gasss

16.Algunas especies de aves como algunos miembros de la familia Anatidae (patos), generalmente realizan migraciones anuales desde norte américa hasta sur américa, este tipo de comportamiento obedece a la necesidad de reproducción y posterior cuidado de las crías ya que en su lugar de origen el clima no es apto para esto. De acuerdo con esto se puede afirmar que las aves han desarrollado un tipo de adaptación:

Answers

Answer:

Un tipo de adaptacion climatica.

Explanation:

Las adaptaciones climaticas de las especies hace que sobreviva el mas apto y haga referencia a la teoria de seleccion natural de Charles Darwin, donde el aclaraba que la adaptacion del organismo vivo con el medio ambiente podia extinguirlo o evolucionarlo, y solo evolucionaran aquellos que pertenezcan a la especie mas fuerte.

The symbol is a warning sign at a petrol station.

Which type of property of a material is the sign warning the customers about?

magnetic
chemical
mechanical
physical

Answers

Answer:

Magnetic

Explanation:

Please follow me

2. Why did the scientists find Henrietta’s cells so important? (What was different about Henrietta’s cells than other cells scientists had used?)

Answers

Answer:

Henrietta's cells never died/they kept replicating/they are immortal cells

Explanation:

Cells typically die after so many replication cycles, her cells did not. They are considered  immortal cells. They have an over active telomerase that rebuilds the telomeres after each division. Therefore these cells do not age and can continue replicating

What role does oxygen play in aerobic respiration?

Answers

Answer:

Aerobic respiration uses oxygen to break down glucose, amino acids, and fatty acids and is the main way the body generates adenosine triphosphate (ATP), which supplies energy to the muscles.

Explanation:

Answer:

to break down glucose, amino acids, and fatty acids and is the main way the body generates adenosine triphosphate (ATP), which supplies energy to the muscles.

Explanation:

Which of these is a market-based instrument (MBI)?
A. Government subsidy or tax break
B. Corporate responsibility initiative
C. The Clean Air Act
D. Government-issued environmental law

Answers

Answer:

B is the answer your welcome

what is activation energy​

Answers

Answer:

Activation Energy- the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.

Explanation:

What are the different parts of brain ?

Answers

Frontal lobe temporal lobe occipital lobe parietal lobe cerebellum and if you count it spinal cord

Question 1 (1 point)
What means of particle transport requires energy?
a
Passive
b
Active
C
Facilitated
d
Osmosis

Answers

Answer:

c

Explanation:

Answer:

C- facilitated

Explanation:

Facilitated diffusion does not require additional energy. Active transport is the movement of particles across the cell membrane using energy.

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