Answer:
Mass the bag before and after its exposure to the solution. If diffusion occured, then there should be an increase in the bag's mass.
Explanation:
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To modify the experiment to collect quantitative data showing that water diffused into the dialysis bag, you could measure the change in the weight of the dialysis bag before and after the experiment.
Here's how you can do it: Prepare the dialysis bag and fill it with a known volume of a solution. For example, you could fill the bag with 100 mL of a sugar solution. Weigh the dialysis bag using a balance before placing it in the beaker with water.
Place the filled dialysis bag into a beaker of pure water. Make sure the dialysis bag is fully submerged in the water. Allow the setup to stand for a specific amount of time (e.g., 1 hour) to allow water to diffuse into the dialysis bag.
After the specified time, carefully remove the dialysis bag from the beaker of water and gently pat it dry with a paper towel to remove any excess water on the outside. Weigh the dialysis bag again using the same balance.
Calculate the change in weight of the dialysis bag by subtracting the initial weight from the final weight. The weight difference represents the amount of water that has diffused into the dialysis bag.
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HELPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
In the cells of humans and other animals, a great deal of energy is dedicated to operating a pump that transports sodium (Na+) ions out of cells and potassium (K+) ions into cells. This transport creates a chemical and electrical gradient. Maintaining the proper balance of sodium and potassium is critical to ensuring that nerve cells work properly. Nerve cells drive muscle contractions—including heart muscles—and are responsible for animals’ abilities to sense their environment and for humans’ ability to think.
Scientists gain a better understanding of the sodium-potassium pump by creating models of what the pump accomplishes. Such models are used to examine many other complex processes as well.
This model of the sodium-potassium pump illustrates the process by which sodium is pumped out of cells and potassium is pumped in. The sodium-potassium pump moves the two different ions in opposite directions.
Where in a cell does this transport process take place?
A.
nucleus
B.
cell wall
C.
cell membrane
D.
vesicle
The Transport process takes place in cell membrane.
What is Transport?Cell transport describes the transportation of a material across a cell membrane. The chemical has the ability to enter or exit cells.
The plasma membrane and cell membrane are both permeable to different substances. The nature of the plasma membrane is quite selective.
Cell transport is very important for transport of molecules. There are two transport of cell transport of endocytosis and exocytosis.
Therefore, The Transport process takes place in cell membrane.
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What gases was not present in earths earth atmosphere
Answer:
Primitive Earth (Before life) contained no or very little Oxygen (element#8)
According to scientific theory:
Earth had no oxygen to begin with. It had a lot of carbon dioxide, though. Somehow (We still do not know how they started growing) single-celled Carbon Dioxide-breathing bacteria slowly, over thousands to millions of years, turned most carbon dioxide into oxygen, supporting new types of life.
:)
5. Predicting: Suppose you went on a run on a hot day in August. You did not drink a lot of water
beforehand. How would this affect your urine formation
which selective is a characteristic of both living and non living thing? metabolism, cells, energy, or subatomic particles?
Answer:
The same atoms and subatomic particles can be found in both.
Have you ever wondered how we can grow from one cell to millions? How do you think this happens?
Answer:
If you think about it, the fact that a single cell can grow into an adult with trillions of cells is pretty awesome. ... It's a process called the cell cycle. Entire organisms grow, and develop by going through the cell cycle again and again. The cell cycle also helps us maintain a healthy body.
From a single cell to multiple cellular organism is formed by different complex mechanism like by cell division which involves a central dogma of life includes three process such as replication, transcription and translation and fourth one is reverse transcription.
what is central dogma ?The ‘Central Dogma’ is the flow of transfer of genetic information, from DNA to RNA to make a functional product, a protein, was first proposed in 1958 by Francis Crick.
DNA contains the genetic information needed to make proteins, and RNA act as a messenger that carries this information to the ribosomes where the information is translated into protein.
The process by which the DNA information converted into protein called gene expression which can occur in two stages like transcription and translation.
The central dogma occurs most frequently in our cells in three stages such as DNA replication that refers to make new DNA from pre existing DNA, transcription to make RNA from DNA and translation from RNA to protein.
Reverse transcription is defined as the transfer of information from RNA to make new DNA in a reverse manner which occur mainly in retroviruses, such as HIV.
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What subatomic particles are found on the inside of an atom (the nucleus) and what subatomic particles are found on the outside (in the rings)?
Answer:
In the nucleus of an atom, we find 2 subatomic particles, protons, and neutrons.
On the outside, on the rings, are electrons.
I hope this helps you somewhat! :D
TheQuestionIsWhy
Differentiate betweeli population density and
population distribution.
Answer:
The main difference between population density and population distribution is that the population density is the number of individuals per unit land whereas the population distribution is the spreading of people over an area of land. Furthermore, population density is unable to describe where the population actually lives, unlike population distribution.
Population density and population distribution are two measurements of population used in a variety of applications in ecology.
Explanation:
What is meant by a phenotype ratio in a Punnett square? (1 point)
A. the fraction of possible offspring that can be observed to have a trait
B. the number of genes that are possible in offspring
C. the number of alleles in possible offspring
D. the fraction of possible offspring that contain a certain allele in their genes
Given the nature of a punnet square, we can conclude that the ratio in question refers to the combination of genotypes present in the square.
A punnet square is a diagram used to attempt to predict the genetic composition for the offspring of certain parents, that is the genotype for this specific cross. This is done by creating a square in the form of a grid and placing the genotypes of the parents on the outside of this then crossing them along the inside.
This diagram provides us with the probability of each genotype outcome. This is known as the phenotype ratio. The phenotypic ratio is the amount of times a specific outcome, such as a certain pair of alleles appears in the predicted genotypes of any of the offspring pertaining to this cross.
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Answer:
ratio based on the phenotypes of offspring and determined using tools such as Punnett Squares.
Write down the tRNA anti-codons that pair with the mRNA strand.
Note: Please use capital letters, and follow this format: A-A-A-A-A-A-A-A
Answer:
tRNA molecules bring a specific amino acid to the ribosome, according to the mRNA codon.
Explanation:
In the context of protein synthesis, an mRNA molecule contains the specific codons that encode the amino acids that will be part of the protein. The tRNA is in charge of bringing the amino acids to the ribosome, according to the specific information of the mRNA codons.
A clean suit should be worn at the crime scene on Willow Lane by CSI personnel to _____.
identify the CSI personnel from other first responders
identify the CSI personnel from other first responders
protect against an unwanted transfer of evidence
protect against an unwanted transfer of evidence
keep their clothes from being spoiled by bodily fluids
keep their clothes from being spoiled by bodily fluids
maintain personal safety around unhealthy contaminates
Answer:
identify the CSI personnel from other first responders
Explanation:
in this environment, the fish represents which type of organism?
A. Heterotroph
B. Producer
C. Autotroph
Match the key elements in the Scientific Method with the correct description. 4. A researcher asks a focused research question or states their reason for the study
A) state the problem
B) state the hypothesis
C) come to a conclusion
D) collect background information
E) conduct experiments
Which pH indicates a basic solution?
1.
1
2.
5
3.
7
4.
12
Answer:
7
A pH value greater than 7 indicates a basic solution. The more the pH value exceeds 7, the more basic is the solution.
7 is the answer.
If the pH is 1, that means the substance is sour or acidic.
If it has a pH of 5, then it is not that acidic.
If something has a pH of 12, then it is almost completely basic.
If something has a pH of 7, then it is basic.
Hope it helps! :)
please help i don’t know how to do this :(
Answer:
polysacchiride is B.
Nucleic acid is C
Protein is D
Lipid is A
Explanation:
How does water pass through the cell membrane using passive transport
Answer:
Hope it helped you brainiest plz and thank you have a great day!!!
Explanation:
How does water pass through the cell membrane using passive transport?
It pass through the passive transport by the simple diffusion of water which can make it simple for a cell membrane to go through.
Which of the following is an indicator of good water quality? (2 points)
Answer→ Physico-chemical indicators
Explanation ≈ They include dissolved oxygen, pH, temperature, salinity and nutrients (nitrogen and phosphorus). They also include measures of toxicants such as insecticides, herbicides and metals.
What do frogs (and all animals) need in order for their bodies to grow, develop, and repair themselves? How do animals use these materials for bodily processes?
Answer:
:P :P :P :P :P :P :P :P :P :P :P :P
Question 4 of 34 4
Where are electrons located?
Answer: they rotate the nucleus creating the "outer casing" that you see in diagrams
Explanation:
Crowdsourcing was used to solve problems for what science discipline?
Answer:
A. Science relies on observation, measurement, and experimentation.
Explanation:
ok Np bye!
Worth 50 points
What gives a protein its unique shape?
Question 5 options:
neither
the unique sequence of amino acids in its polypeptide chain
the unique folding of the polypeptide chain
Answer:
the unique sequence of amino acids in its polypeptide chain
Explanation:
Protein is a large molecule which is made from a chain of smaller molecules called amino acids. There are twenty amino acids exist, and when they bond together they make unique proteins depending on their sequence in the chain.
count how many cells are are in this picture
Answer:
there is no picture there lol
Which of these questions could BEST be answered with the methods of science?
a. How is Earth different from other planets?
b. What does it mean to be a good person?
c. Will computers make us more or less human?
Answer:
A
Explanation:
It is about planets and planets are in space.
A cell from which organism would most likely be smallest?
Answer:
A
Explanation:
a bacteria would be the smallest thing in that list resulting in the smallest cell
pls mark brainliest
How quickly can mitosis occur in a paramecium?
Answer:
Under favourable conditions, Paramecium multiplies rapidly up to three times a day. Binary fission divides a cell transversely and followed by mitotic division in the micronucleus. Macronucleus divides amitotically. The gullet also divides into two halves
Explanation:
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Paramecium can be multiplied rapidly up to three times a day.
In paramecium binary fission divides a cell transversely in two parts .Then after it followed by mitotic division in the micronucleus if paramecium.However Macronucleus divides amitotically in life.feel the inside of your elbow as you lift a book. you should feel a strong cord. what is this? what does it do?
We feel the inside of the elbow as we lift a book. We should feel a strong cord. This cord is known as Oblique cord.
What is the Oblique cord?The oblique cord is a ligament which is present between the ulnar and radius bones in the forearm region near the elbow. Oblique cord takes the form of a small, flattened band, which is extending downward and lateralward, from the lateral side of the ulnar bone tuberosity at the base of the coronoid process to the radius of a little below the radial tuberosity. The fibers in this cord runs in the opposite direction to those of the Interosseous membrane of the forearm region of the hand.
The oblique cord may simply be defined as an additional tie which is between the radius and ulna of the hand which is aiding other soft tissue structures such as the annular ligament and interosseous membrane. Additionally, the oblique cord may also prevent the anterior shearing of the proximal radius under the extreme compressive loads.
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Radiating heat travels in waves moving at about 300,000 km/sec true or false?
Answer:
True
Explanation:
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Answer:
Yes
Explanation:
because of the Hottness
-- How do scientists predict the weather over our future?
The Short Answer:
To predict future climate, scientists use computer programs called climate models to understand how our planet is changing. Climate models work like a laboratory in a computer. ... Scientists use computer programs called climate models to understand how our planet is changing.
A concentration gradient affects the direction that solutes diffusion. Describe how molecules move with respect to the concentration.
Answer:a
Explanation: took it
Answer:
If a concentration gradient exists, molecules will move from areas of high concentration to areas of low concentration until the concentration gradients have equalizedExplanation:
I don't really have an explanation but there's the CORRECT answer.
Sort the phrases based on whether they represent kinetic energy or potential energy.
Answer: The main difference between potential and kinetic energy is that one is the energy of what can be and one is the energy of what is. In other words, potential energy is stationary, with stored energy to be released; kinetic energy is energy in motion, actively using energy for movement
Explanation:
hope helps
Which of the following best describes the composition of a nucleotide?
Select one:
a.
a pair of six-carbon rings attached to each other
b.
a carbon atom joined to a hydrogen and three functional groups
c.
a chain of carbon atoms with a carboxyl group bonded to one end
d.
a five-carbon sugar attached to a phosphate group and a nitrogenous base
Answer:
d
Explanation:
Nucleotide is composed of 3 main subunits, which are nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates.