The experiment that showed that the amount of a,t.g and c is the same from species to species is?

Answer:

The atom's properties are rearranged.

Explanation:

"A compound is a substance formed when two or more elements are chemically joined. ... When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of. A chemical formula is used a quick way to show the composition of compounds."

"They are rearranged to form new products [in a chemical reaction] with different physical and chemical properties from the reactants."

I hope this helps you!

Answer:

1.

Explanation:

Atomic mass is protons+neutrons. Atomic number is just protons.

The idea here is that the ratio that exists between the number of atoms of argon-40 and the number of atoms of potassium-40 will give you the number of half-lives that passed.

As you know, the half-life of a radioactive nuclide tells you the time needed for half of the atoms of said nuclide to undergo radioactive decay.

In your case, you know that potassium-40 has a half-life of

1.25

billion years because that's how long it takes for half of the number of atoms present in the sample to decay to argon-40.

Now, let's say that your sample started with

A

K-40

atoms of potassium-40 and

0

atoms of argon-40.

You can thus say that the sample will contain--keep in mind that the atoms of potassium that decay form argon-40!

After

1

half-life

1

2

⋅

A

K-40

=

A

K-40

2

1

→

atoms of potassium-40

A

K-40

−

A

K-40

2

1

→

atoms of argon-40

After

2

half-lives

1

2

⋅

A

K-40

2

1

=

A

K-40

2

2

→

atoms of potassium-40

A

K-40

−

A

K-40

2

2

→

atoms of argon-40

After

3

half-lives

1

2

⋅

A

K-40

2

2

=

A

K-40

2

3

→

atoms of potassium-40

A

K-40

−

A

K-40

2

3

→

atoms of argon-40

At this point, we can use this pattern to say that after

n

half-lives pass, the sample will contain

A

K-40

2

n

→

atoms of potassium-40

1

−

A

K-40

2

n

→

atoms of argon-40

Now, you know that sample contains

31

atoms of argon-40 for every

1

atom of potassium-40, which means that you have

A

K-40

−

A

K-40

2

n

A

K-40

2

n

=

31

This is equivalent to

A

K-40

−

A

K-40

2

n

A

K-40

2

n

=

31

2

n

−

1

2

n

⋅

2

n

1

=

31

which gives you

2

n

=

32

Since

32

=

2

5

you can say that

2

n

=

2

5

⇒

n

=

5

This means that

5

half lives must pass in order for the sample to contain

31

atoms of argon-40 for every

1

atom of potassium-40.

Consequently, you can say that the age of the rock is

5

half-lives

⋅

1.25 billion years

1

half-life

=

6.25 billion years

−−−−−−−−−−−−−−−

I'll leave the answer rounded to three sig figs, but keep in mind that you have two significant figures for the number of atoms of argon-40 present per atom of potassium-40.

We used transformation to obtain the freshly ligated promoter and plasmids.

One of the fundamental methods in molecular biology is the heat shock method, which transforms plasmid DNA into E. coli. A foreign plasmid or ligation product is inserted into bacteria in this method.

Bacterial cells can be transformed primarily by heat shock or electroporation. The bacterial cells in both situations must be made competent or permeable to the plasmids you want the cell to spread.

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Water can move across the membrane in all bags containing solutions of sugar, provided the membrane is semi-permeable.

In such cases, water molecules move through the membrane to balance the concentration of sugar on both sides, following the principle of osmosis.

Water movement across the membrane in bags containing solutions of sugar will depend on the concentration of the sugar solution inside and outside the bag. If the concentration of sugar inside the bag is higher than the concentration outside, water will move from the outside solution into the bag, resulting in an increase in the volume of the solution inside the bag. However, if the concentration of sugar inside the bag is lower than the concentration outside, water will move out of the bag, resulting in a decrease in the volume of the solution inside the bag. So, whether water moved across the membrane in all bags containing solutions of sugar will depend on the specific concentrations of the sugar solutions inside and outside the bags.

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Water moved across the membrane in order to create equilibrium between the concentrations of water on both sides.

It can be concluded that water moved across the membrane in all bags containing solutions of sugar because the net movement of water molecules is always from the area of high concentration to low concentration. This is called osmosis, and the process continues until both sides of the membrane become equal in terms of concentration.

In this experiment, bags with different concentrations of sugar were used, which created different concentrations of water molecules on either side of the membrane.

Therefore, water moved across the membrane in order to create equilibrium between the concentrations of water on both sides.

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Answer:

Alright, I really hope that this assignment isn't late for you! Also, may not be totally correct, I'm just giving what I think, and hoping.

Explanation:

Question: Why does the grass near the chicken coop grow taller with broader leaves, as opposed to the grass near the house, which is not as tall or healthy?

Hypothesis: I (Jesse) think that there is more rainfall near the chicken coop. The rain causes the grass to grow to be strong and healthy. However, there is less rainfall near the house, and so the grass near there is less healthy/tall.

Experiment: Measure rainfall by the chicken coop and by the house. See whether there is a significant difference in the rainfall levels. If yes, then proceed to charts and conclusion. If not, then go back to the hypothesis and try again with a different variable.

Hope this helps!

Doping for three regions of a BJT at equilibrium is shown below. In a bipolar junction transistor (BJT), a p-type semiconductor layer is sandwiched between two n-type semiconductor layers in an n-p-n or p-n-p configuration.

2. Below are the modified drawings showing the concentration of carriers in each region of the BJT when the transistor is in forward bias or reverse bias:For n-p-n transistor in forward biasFor n-p-n transistor in reverse biasFor p-n-p transistor in forward biasFor p-n-p transistor in reverse biasThus, the above illustrations explain the doping and concentration of carriers in each region of a BJT.

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Answer:

when an organism is covered by sediment,it begins to decay, when decaying,the organism releases a gas.This process in turns leaves a thin film of carbon that preserves part of the organisms.The hallow that forms on the sediment is the carbon film that contain fossils of the organism.

The deformity that causes an exaggerated curvature of the lumbar spine is a) Lordosis.

Lordosis is a spinal deformity that causes an exaggerated inward curve of the lower spine, which is the lumbar region. This can cause the lower back to appear excessively arched or curved. Lordosis is commonly referred to as "swayback."

The other answer choices are different types of deformities that can affect the spine and gait:

Steppage gait is a type of abnormal gait that is characterized by a high-stepping walk, where the foot is lifted higher than normal, due to weakness or paralysis of the muscles that lift the foot.

Kyphosis is a spinal deformity that causes an exaggerated outward curvature of the upper spine, which is the thoracic region. This can cause the upper back to appear excessively rounded or hunched.

Scoliosis is a spinal deformity that causes a sideways curvature of the spine, often in an "S" or "C" shape. This can cause the spine to appear curved or twisted, and can also cause other symptoms, such as back pain, breathing difficulties, and uneven shoulders or hips.

Therefore, the correct option is A.

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With the x-axis being linear and the y-axis being logarithmic, the graph is thus semi-logarithmic.

The relative rate of population growth is displayed. On this graph, a population that expands at a steady rate is depicted as a straight line, although the actual population size grows exponentially.

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Cells increasing their activity to produce more heat when it is cold.

Negative feedback is a strategy of the body to maintain homeostasis, that is, to maintain the dynamic balance of the body. It can be defined as a situation where the body causes a negative change, contrary to the factor that is causing the body to become unbalanced.

When a system's outputs are subsequently fed back into it, the influence of successive iterations is minimized or reduced. This situation is known as negative feedback.

Negative feedback loops in markets can thereby lessen volatility, for instance through contrarian or value investment.

Therefore, Cells increasing their activity to produce more heat when it is cold.

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Answer:

It's B

Explanation:

Answer: C) The risk factors cause changes to genes that regulate the cell cycle

Explanation:

The process in which protein is formed is called protein synthesis and there are various types of RNA involved in this process.

RNA stands for Ribonucleic Acid. There are 4 major types of RNA based on their size and function. The first one is mRNA. mRNA or messenger RNA that is translated into a polypeptide. It is responsible to carry information from the nucleus to the cytoplasm.  It forms a template for protein synthesis.

The next type of RNA is tRNA, also called as transfer RNA. It binds to anticodon on one end and amino acid to another. They help in making the protein in the correct form. Then, rRNA, also called as ribosomal RNA is also involved in the process of making protein. The facilitate the coding of the amino acid coded by the mRNA. Finally, hnRNA, heterogenous nuclear RNA that transcribes the precursor RNA into a long strand in the eukaryotes.

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Answer:

Explanation:

a bird feather is biotic because it was made on a living thing. fog is abiotic because its not  living or was never living. i might be wrong about the feather tho.

Archaea, fungus, and several types of bacteria are examples of anaerobic organisms. In situations with no oxygen present, these organisms may persist and procreate.

Any organism that cannot grow without molecular oxygen is referred to as an anaerobe. If there is free oxygen present, it can respond poorly or perhaps perish. An aerobic organism (aerobe), on the other hand, needs an oxygen-rich environment to survive.

Anaerobic means "without oxygen" in scientific terms. The phrase has numerous medical applications. Anaerobic bacteria are microorganisms which can thrive without oxygen. For instance, it can flourish in human tissue has been wounded and is not being nourished bythe  blood rich in oxygen.

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Answer: I have no idea

Explanation: This question does not have enough information for me to answer it.

Some microbial control agents are able to denature cell proteins by breaking bonds that maintain the native state, the three-dimensional configuration of the proteins.

To restrict or stop microbial growth is to stop it from happening. There are two main ways to influence this control: either by killing bacteria or by preventing their proliferation.

When applied to crops, microbial biological control agents (MBCAs) function in a variety of ways to biologically control plant diseases.

Some MBCAs affect plants by causing resistance or priming them without directly interacting with the pathogen they are meant to target Disinfectants, antiseptics, antibiotics, and chemotherapeutic antimicrobial compounds are examples of chemical agents used for control.

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Answer:

d)

Explanation:

The abnormality that will result in a male having some female characteristics is Klinefelter syndrome that is Option D is the correct answer. The Klinefelter syndrome, which has XXY genotype. This disease affects only the male

Chromosomal abnormalities are of different types; some are related to autosomes, and some are related to X and Y chromosomes. The down syndrome happens due to the trisomy in the 21st chromosome, which means instead of two chromosomes, there are three chromosomes.

In Patau syndrome, the trisomy is seen in the 13th pair of homologous chromosomes, and as a result, instead of two chromosomes, three are present. Klinefelter syndrome is associated with males who have an extra X chromosome. Infertility is observed as a result of this male display of female characteristics, such as behavioral changes. Turner syndrome is associated with females who have lost one X chromosome.

As a result, the correct answer is option D, which is Klinefelter syndrome, which is XXY.

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Answer: Evaporation

Explanation:

Explanation:

together evaporation transpiration sublimation plus volcanally emissions for almost all the water evaporate in the atmosphere that isn't inserted in human activities

Kidney function, bone growth, and beating of the heart are all topics of anatomy. The statement is false.

Anatomy is the branch of biology concerned with the study of the structure of organisms and their parts.

It deals with the structural organization of living things.

The branches are gross anatomy, microscopic anatomy, human anatomy, phytotomy, zootomy, embryology, and comparative anatomy.

Kidney function is a part of human physiology, not anatomy.

Bone growth is a part of human physiology, not anatomy.

Beating of the heart is a part of human physiology, not anatomy.

Hence, the statement is false.

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It is FALSE that Compared to skinfold measurements, BIA is usually preferable when measuring the body composition of athletes.

Bioelectrical impedance analysis (BIA) and skinfold measurements are two different methods used to estimate body composition. The choice between these methods depends on various factors, including the specific needs of the assessment, the equipment available, and the expertise of the assessor.

Skinfold measurements involve using calipers to measure the thickness of subcutaneous fat at specific sites on the body. It provides an estimate of body fat percentage. Skinfold measurements are relatively simple and inexpensive, but they require trained individuals to ensure accurate measurements.

BIA, on the other hand, measures body composition by sending a low-level electrical current through the body and measuring the resistance encountered. This method estimates body fat percentage, muscle mass, and hydration levels. BIA is non-invasive and quick to perform, but the accuracy can be influenced by factors such as hydration status and individual variations.

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Answer:

The cell membrane controls what goes in and out by having protein channels that act like funnels in some cases and pumps in other cases. Passive transport does not require energy molecules and happens when a funnel opens in the membrane, letting molecules flow through.

The biochemical function that an activated Cdk performs is the phosphorylation of target proteins. Cyclin-dependent kinases (Cdk) are a group of enzymes that aid in the regulation of the cell cycle by phosphorylating a variety of target proteins.

Target proteins are phosphorylated by an activated Cdk as part of its biochemical function, which controls the processes that result in cell cycle progression. To activate the enzyme, cyclins, a related regulatory component, are typically required. In order to move the cells through the cell cycle, several Cdk-cyclin complexes that function at various stages of the cycle phosphorylate various target proteins. Several mechanisms, including as the phosphorylation and dephosphorylation of certain residues and the degradation of Cdk inhibitors, are used to control Cdk activity.

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The letter that identifies the corpus callosum in the diagram is letter B.

The corpus callosum is a broad band of nerve fibers that connects the left and right hemispheres of the brain. Its main function is to allow the two hemispheres to communicate and share information with each other.

The corpus callosum facilitates the transfer of motor, sensory, and cognitive information between the two sides of the brain, and helps to integrate their functions. Without the corpus callosum, the hemispheres would function largely independently, which could result in a range of neurological and cognitive problems.

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Answer:

boy

Explanation:

Answer:

I will say chemical processes

Answer:

all of the above

Explanation:

Water Pollution is any physical, biological, or chemical change in water quality that adversely affects living organism or makes water unsuitable for desired uses.

At the end of the manipulation, there are 1 × 10^3 cells in tube 3

The initial tube contains a cell concentration of 1 × 10^6 cells/ml. Therefore, the number of cells in the initial tube is 1 × 10^6 cells/ml.

To calculate the number of cells left in the initial tube, we can determine the number of cells that were removed when 100 µl was taken out. This can be calculated as follows:

Number of cells removed = 1 × 10^6 cells/ml × 100 µl = 1 × 10^6 cells/ml × 1 × 10^-4 L/µl × 100 µl = 100,000 cells.

Regarding the number of cells in tube 3 after the manipulation, we know that the volume of cells in tube 2 is 100 µl, corresponding to 1 × 10^5 cells. When tube 2 is mixed with 900 µl of medium in tube 3, the total volume in tube 3 becomes 1 ml (100 µl + 900 µl).

Hence, the number of cells in tube 3 is calculated as follows:

Number of cells in tube 3 = 1 × 10^5 cells/100 µl × 1 ml/1,000 µl = 1 × 10^3 cells.

Therefore, at the end of the manipulation, there are 1 × 10^3 cells in tube 3.

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