A group of students is trying.to determine which detergent will best remove an oil stain. They stain five separate cloths with oil and.then wash each of.the cloths in a deficient detergent. They repeat each test two more times. Which step should be included in their investigation plan?
Answer: Place each oil stain on separate, but identical, pieces of cloth.
The group of students should have stained separate but identical pieces of cloth.
There are different factors that influence how easily a stain will come out of a material such as:
the type of material the detergent used the temperature of the waterAssuming the temperature is held constant and the type of detergent is being tested, the only thing other thing to control is the type of material.
The students used separate cloths instead of identical ones which meant that a significant variable was not controlled.
In conclusion, the students should use separate but identical pieces of cloth so that the type of material would not impart their experiment.
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describe the active site of an enzyme. why is it important?
Answer:
An active site contains a binding site that binds the substrate and orients it for
catalysis. The orientation of the substrate and the close proximity between it and
the active site is so important that in some cases the enzyme can still function
properly even though all other parts are mutated and lose function.
Please choose as brainliest
Why is it important for cells of multicellular organisms to undergo mitosis? A) mitosis allows for reproduction B)mitosis increases variation within an organism. C) mitosis produces cells that are different from the original dividing cell. D)mitosis produces cells that are identical to the original diving cell
The answer is A mitosis allows for reproduction. This is because during mitosis two identical daughter cells are created which can contribute to an embryo.
Hope this helps ! <3
It is important for cells of multicellular organisms to undergo mitosis because mitosis produces cells that are identical to the original dividing cell. Thus, the right option would be D.
Mitosis involves the division of vegetative cells and it results in daughter cells with the same morphology and genome as the parent cell.
The division of vegetative cells in multicellular organisms will ensure that damaged or dead cells are replaced with cells of similar morphology and genome.
Apart from replacing dead or damaged cells, mitosis also allows multicellular to grow in size by allowing similar cells to spring from existing cells.
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A range of different things is called?
Answer:
disstance
Explanation:
the reason why it is called that because they mean the both thing but they are just diffirent wordsInterpret and explain this graph on photosynthesis
Answer:
This graph is showing how different rates of light intensity, environmental temperature, and Carbon dioxide affect the rate of photosynthesis. It looks like the greatest rate of photosynthesis has .13% Co2 at 30 degress celsius.
Explanation:
I was always taught that they y-axis is the dependent variable and going off that, all the other variables can be controlled and changed.
Which type of compounds dissolve easily in water?
A. Covalent and Nonpolar
B. Nonpolar and ionic
C. Polar and ionic
D. Polar and Nonpolar
Building Polymers
Monomers are the building blocks of larger molecules called polymers. A polymer consists of repeating monomers bonded to each other with covalent bonds.
Use the drawpad to connect each monomer to its polymer.
Answer: I'm doing the same homework. I'm pretty sure that the 6 hexagons are the startch glucose. Try page 2
Explanation:
Each monomer is correctly connected to its polymer in the attached image in which amino acid is attached with protein, the nucleotide is connected to DNA, the fatty acid is attached to fat or lipid, and glucose or sugar is attached to carbohydrates.
Monomers are the basic unit or building blocks of larger molecules known as polymers. Polymers are made up of two or more monomers or long chains of monomers attached together.
The macromolecules are polymers and made up of their particular monomers:
Proteins made up of amino acids: In the protein structure there are many amino acids are joined together with help of peptide bonds and due to this, it is also called a polypeptide chain.Nucleic acid (DNA) is made up of nucleotides- nucleotide monomers bind together and form chains of the nucleotides.Fat made up of fatty acids: Fats or lipids are polymers made up of long chains of fatty acids,carbohydrates made up of glucose monomers: glucose or other monosaccharides bind together to form polysaccharides or carbohydrates.Thus, the correct answer is attached as the image.
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what do not a male and a female mosquito feed on the same matter?
A proton the nucleus. A neutron the nucleus. An electron the nucleus.
Answer:
atom iscomposed of three sub-atomic particles
proton
neutron
electron
Protons and neutrons make up the nucleus of the atom, a dense and positively charged core, whereas the negatively charged electrons can be found around the nucleus.
Explanation:
Answer:
proton
neutron
electron
Explanation:
In humans, excess blood glucose is stored in the liver and in muscle tissue in the form of glycogen Glycogen is a long chain of
glucose molecules bonded together. Because of this, glycogen is called a
A) lipid
B) monosaccharide
C) polysaccharide
D) protein
Plsss helppp plssss helppp
Which amino acid is least likely to form hydrogen bonds?
Answer:
6 amino acids
Explanation:
6 amino acids (asparagine, glutamine, histidine, serine, threonine and tyrosine) have both hydrogen donor and acceptor atoms in their side chains.
What layer is on the center of the Earth
Answer:
The core
Explanation:
At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy.
Where are electrons found?
inside the nucleus
outside the nucleus
there is no such thing as electrons
Answer:
they are found outside the nucleus
Answer:
Electrons are found outside the nucleus.
Explanation:
Looking on a chart you can when your making a nucleus you place the electrons outside on the circles around it and only certain amount of electrons on let on certain circles.
SOMEONE PLS HELP WITH THESE TWO QUESTIONS
1)Chad’s family just moved into a new home. The sun went down as Chad was moving boxes into the house, so he had to turn on a light to see. Which statements are true about the power Chad used? Choose the two statements that apply.
A. The power he used to move the boxes can be found by determining the rate at which work was done on the boxes.
B. The power Chad used to move the boxes is the force he used times the distance he moved them.
C. The power of the light Chad turned on is the amount of energy changed from electricity to light.
D. The power of the light Chad turned on is the amount of energy transferred per time.
2)Raul dug a hole in his yard to repair a water pipe. It took him 2 seconds to apply a force of 50 Newtons to push the shovel 0.25 m into the ground. How much power was used?
A. 0.01 watts
B. 6.25 J/s
C. 25.00 N•m•s
D. 100.00 watts
Answer:
1.) A and D
2.) B
Explanation:
The power he used to move the boxes can be found by determining the rate at which work was done on the boxes. The power of light Chad turned on is the amount of energy transferred per time. So the correct options are A and D. In 2nd, the power used was 6.25 J/s. So the correct option is B.
What is power?
The watt, denoted by the letter W, is the common unit used to measure power. James Watt, a Scottish businessman and inventor, is honoured with the unit's name. The watt is certainly a term you frequently encounter in daily life. Electrical devices like light bulbs and stereos commonly advertise their power output in watts. One watt is equivalent to one joule of work performed each second by definition.
Horsepower is another power unit that is still extensively used. This was first used to describe the ability of a regular horse to spin a capstan in the 17th century and is often represented by the sign hp. Since then, a metric horsepower has been defined as the force needed to raise a 75 kg mass a metre in one second, where 75 kg is the mass's weight in kilogrammes.
Therefore, for 1) the correct option is A and D and for 2) the correct option is B.
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What are the three outputs a result of photosynthesis?✨ Will give brilliant✨ ( when I can)
1. ____ which is also known as sugar
2. _____ _______
3. ______= O2
Of the 3 outputs, _____ is the actual food for the plant
c) Assume that the concentration of the solute molecules varies over time on both sides of the membrane and that the solute molecules continue to pass through the membrane even when the concentration gradient is the reverse of the gradient shown. Describe the environment in and around the cell, as shown in the diagram, and the mechanism of transport of the solute molecules. (3 points)
Answer:
Does the movement of molecules stop when the concentration of a solute is equal on both sides of a membrane?
The concentration of solute molecules on both sides of the membrane will vary over time, and the solute molecules will continue to pass through the membrane even when the concentration gradient is reversed.
The environment in and around the cell is constantly. The diagram shows a cell with a higher concentration of solute molecules on the inside than on the outside. This means that there is a concentration gradient, and the solute molecules will tend to move from the inside of the cell to the outside. This process is called diffusion.
The solute molecules can also move through the membrane by other mechanisms, such as facilitated diffusion and active transport. Facilitated diffusion is a process that uses proteins in the membrane to help the solute molecules move across the membrane. Active transport is a process that requires energy to move the solute molecules across the membrane.
The concentration of solute molecules on both sides of the membrane will continue to change over time. As the solute molecules move from the inside of the cell to the outside, the concentration of solute molecules on the inside of the cell will decrease. This will create a new concentration gradient, and the solute molecules will continue to move from the inside of the cell to the outside.
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An ion with six protons, seven neutrons, and a charge of 2+ has an atomic number of ________.
An ion with six protons, seven neutrons, and a charge of 2+ has an atomic number of ________.
five
six
seven
four
Answer:
The atomic number is six.
What is the independent variable in the graph?
Answer:
x axis is the independent variable
Explanation:
What conclusion from the study of Mesopotamia can be used in irrigation practices today?
A.Continuous irrigation is a good thing.
B.Irrigation methods with the least impact on the water table may be beneficial.
C.Irrigation should not be used in hot climates,
D.Farming should not be done in hot climates.
Answer:B
Explanation:
Mesopotamia has been the Western Asian region that is known for early civilization. The method that has the least impact on the water table is the best irrigation method. Thus, option B is correct.
What are Mesopotamian irrigation practices?Mesopotamian irrigation practices have been the use of canals and shadufs for direct use in agricultural fields. They irrigated their land by digging holes and storing the water. They also built canals and connected them to the ditches.
For modern practices, the Mesopotamian irrigation system is a model as it defines the best irrigation method to be the one that has the least impact on the water content and table.
Therefore, option B. the best irrigation method is that uses the eater most efficiently and does not negatively impact the water table.
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Please help me answer this as fast as possible!!!!!
Answer:
Tiny functional structures inside of cells
Explanation:
Well, they are not PART of an organ. They all have sperate jobs, like vacuoles are used to store water inside a cell.
Answer:
Tiny functional structures inside cells.
Explanation:
I am the father of your country.
What is the name of the group of proteins that can speed up the process or reduce the activation energy of a reaction? a) enzymes b) lipids O c) ions d) vitamins Please help me
Answer:
The answer is a) enzymes
Which process(es) converts stored energy into usable energy?
0
A. aerobic cellular respiration
0
B. fermentation
C. both aerobic cellular respiration and fermentation
OD. neither aerobic nor fermentation
Answer:
it is C
Explanation:
just trust me bro
Which is most likely true of prokaryotic cells? A. They evolved on Earth before eukaryotic cells. B. Their DNA is contained in the nucleus. C. They are large, complex cells. D. Their organelles are surrounded by membranes.
Answer:
A. They evolved on Earth before eukaryotic cells.
Explanation:
Eukaryotic cells are more complex that prokaryotes so it would make sence taht they would have evolved before them.
Carbohydrates are an important type of _ compound.
A) organic
B) lipids
D) protein
Which statement is true about the forces involved in an ornithopter and a pterosaur taking off?
a. Gravity acts on both the ornithopter and the prerosaur,
b.Drag acts only on the ornithopter and not on the pterosaur.
c.Thrust resists the motion of the prerosaur and the ornithopter.
d. Lift is the single major factor in the forward movement of the ornithopter.
plzzzzz help I need a better grade
Answer:
I think its a if not b
Explanation:
How are humans and amoebas similar?
Answer: An amoeba is a microscopic protozoan that is found in both terrestrial and aquatic environments. Amoebas are at the bottom of the food chain, providing nutrients for other living things. Humans are members of the primate family and are the most intelligent living things on Earth.
What is CCI4 molecular shape name
Answer:
tetrahedral is the name of ccl4 molecular shape . may help you(:
Chemical Structure of cellulose diagram
Which is the best example of water regulating an organism’s body temperature? a jogger sweating after a run a fish passing water over its gills a deer taking a drink from a stream a leaf using water for photosynthesis
Answer: A. Jogger sweating after a run.
Explanation: I took the quiz. ;)
The best example of water regulating an organism’s body temperature is a fish passing water over its gills, which is the second option, as the fish gill maintains the body temperature and maintains the oxygen and carbon dioxide concentrations too.
What is the significance of the water-regulating system in an animal body?The water-regulating system in an animal body maintains homeostasis in the body, such as electrolytes homeostasis, such as ions such as sodium and potassium in body fluids, and the lungs ,skin, play a role in regulating water balance through respiration and sweating to maintain temperature of the body.
Hence, the best example of water regulating an organism’s body temperature is a fish passing water over its gills, which is the second option, as the fish gill maintains the body temperature and maintains the oxygen and carbon dioxide concentrations too.
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