NEED HELP ASAP! 100 POINTS!!
A lab experiment is created to see how the amount of solute affects the temperature needed to dissolve the solute completely. 2, 4, 6, and 8 grams of a salt are place in a small test tube with 15mL of water. The test tubes are then heated until the salt completely dissolves. Unfortunately, the test tube with 8 grams of salt never completely dissolves at any temperature. Suggest two changes to the procedure that might solve this problem.

Answer: A

Explanation: hypothesis is something na hindi pa napatutunayan at nagpag-aaraalan while theory is something na backedup with evidences and data

Answer:

In my own understanding, hypothesis is a statement or conclusion made from an observation. While theory is when an hypothesis has been found to be a fact after series of tests and experiment, it becomes theory or law

Answer:

It regulates temperature, glucose, toxins, blood pressure and ph

Answer:

Explanation:

In the scientific method first of all is you need to identify the problem, the problem to your question is why does the dog circle its bed before lying down. Second is the observation to gather some data, you need to observe the dog if what could be the possibility the the dog may do that action. The third is the pre hypothesis, you need to came up with an idea why does the dog do such and action for example the needs to find a correct spot to make itself comfortable and lastly the hypothesis, this should answer to your question or your problem. So my hypothesis is that dogs are one of the animals that are those difficult to find a place to sleep and some of that kind of animals are cat, before they lay on their bed, they have to circle to find a spot that could fit its body to be more comfortable when the dog sleep.....

Answer:

Alanine

Arginine

Asparagine

Aspartic Acid

Cysteine

Glutamic acid

Glutamine

Glycine

Histidine

Isoleucine

Leucine

Lysine

Methionine

Phenylalanine

Proline

Serine

Threonine

Tryptophan

Tyrosine

Valine

Selenocysteine

Pyrrolysine (not used in human protein synthesis)

Of these 20 amino acids, nine amino acids are essential:

Answer:

Being emotional

Frustrations about changes in bodies

Explanation:

During growth stage, there are certain changes that occurs, these changes are either permanent or temporary. Temporary changes are seasonal and end with time as one is transitioning whereas permanent changes like deepening of voice in boys remains and growth of breasts in girls are permanent

Answer:

1. produced by the APC to activate the helper T cell

Explanation:

Apc is T cell

Answer:

In order for animals to successfully be able to go through photosynthesis,

Explanation:

animals would need a chloroplast since photosynthesis occurs in the chloroplast of plant cells.

Living things are made up of at least one cell which is option B.

Living things are organisms that have one or more cells and have life i.e they can breathe.

Living things are organisms that can perform some essential processes and has the ability to maintain their internal environment.

Some essential processes perform by living things are metabolism, respiration and so on.

The mature characteristics of living things are movement, respiration, nutrition, irritabilility, growth, excretiuon, reproduction and death.

Examples of living things are plants and animals.

Therefore, living things are composed of one or more cells and have a complex organization that help them to maintain their internal environment.

Learn more about living things below.

https://brainly.com/question/280237

#SPJ1

Chloroplasts and cyanobacteria contain membrane-bound compartments called thylakoids. They serve as the location of the photosynthetic reactions that depend on light. A thylakoid membrane surrounds a thylakoid lumen in thylakoids.

Chlorophyll pigments are present in bundles called quantasomes in thylakoid membranes. Between 230 to 250 chlorophyll molecules make up each quantasome.

The light-dependent photosynthesis reactions take place on the thylakoid membrane, where the photosynthetic pigments are physically incorporated into the membrane. It is made up of 1 nanometer-wide bands of light and dark material that alternate. The inner chloroplast membrane and prokaryotic membranes both share characteristics with the lipid bilayer that makes up the thylakoid cell.

To know more about photosynthesis, click here:

https://brainly.com/question/29764662

#SPJ4

Answer:

I think the answer is C

Explanation:

The scenario that would not prompt the cell to start dividing is the stretching of a cell to allow for more fat storage.

Cell division may be defined as the process by which a parent cell divides into two or more daughter cells.

The stretching of a cell to allow for more fat storage is usually done by the process of cell growth, but not by the process of cell division.

Therefore, the scenario that would not prompt the cell to start dividing is the stretching of a cell to allow for more fat storage.

To learn more about Cell division, refer to the link:

https://brainly.com/question/796780

If there are 8 amino acids, there would be 24 bases on the mRNA.

As we know that a set of three bases of mRNA, called a triplet codon, specify one amino acid. Thus, for a polypeptide of 8 amino acids, the corresponding mRNA will have 8 X 3 = 24 bases.

What does mRNA do?

Each mRNA carries instructions to make a specific protein. These instructions are like a “blueprint.” mRNA delivers these instructions, and cells put the protein together.

What is mRNA?

A type of RNA found in cells. mRNA molecules carry the genetic information needed to make proteins. They carry the information from the DNA in the nucleus of the cell to the cytoplasm where the proteins are made.

What are the 4 amino acids in mRNA?

It had long been known that only 20 amino acids occur in naturally derived proteins. It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C).

To know more about amino acids

https://brainly.com/question/28409615

#SPJ1

Based on their recognition sequences, two DNA bands will be produced by Bam1 and three DNA bands will be produced by EcoR1.

Restriction sites are sequences of nucleotides which are recognized by restriction enzymes and are acted upon by the restriction enzymes.

Restriction enzymes cuts DNA at recognition sites based on their recognition sequences.

Examples of restriction enzymes are Bam1 and EcoR1.

For Bam1, the recognition sequence is (CCTAGG) --- 5' CCTAGG 3'

Two bands will be produced using Bam1 as shown below:

5'ACGAATTCAGTATTATCCTAGG 3'

3'TGCTTAAGTCATAATAGGATCC 5'

5'TATCCGCCGCCGAATTCTCATCA 3'

3'ATAGGCGGCGGCTTAAGAGTAGT 5'

For EcoR1, the recognition sequence is (GAATTC) --- 5'GAATTC 3'

Three bands will be produced using with EcoR1 as shown below:

5'ACGAATTC 3'

3'TGCTTAAG 5'

5'AGTATTATCCTAGGTATCCGCCGCC 3'

3'TCATAATAGGATCCATAGGCGGCGG 5'

5'TCATCA 3'

3'AGTAGT 5'

Therefore, two DNA bands will be produced by B-am1 and three DNA bands will be produced by Eco-R1.

Learn more about restriction sites at: https://brainly.com/question/8886948

For a hypotonic solution the movement of water is from the solution to the cell, in isotonic solution there is no net movement and for hypertonic solution the movement of water is from the cell into the solution.

Hypotonic solution is the one where the concentration of solute is less as compared to the cell. This is the reason why movement of water is from solution to the cell and the animal and plant cell become lysed and turgid respectively.

Hypertonic solution is the one where the concentration of solute is more as compared to the cell. This is the reason why movement of water is from cell to the solution and the animal and plant cell become shriveled and plasmolyzed respectively.

To know more about hypertonic, here

brainly.com/question/13275972

#SPJ1

The likelihood of having a male child, which is about 50% for each pregnancy, is used to predict the percentage of men. The actual percentage of men in any given family or group.

The secondary sex ratio, or SSR, is the ratio at birth, and in the majority of developed nations, it is approximately 105 boys for every 100 girls. The primary sex ratio is the ratio at conception. The percentage of boys among all births, or approximately 51.2 percent, is a common way to describe this.

There is a 50% probability that a sperm will fertilize a boy and a 50% chance that a sperm will fertilize a female ovum each time. No of what occurred earlier, each time an ovum is fertilized, a new zygote is created, which may be a boy or a girl.

to know more about predicted percent here:

brainly.com/question/2955495

#SPJ1

The Gibbs free energy available to do work for the reaction is approximately -15,427.20 kJ, rounded to two decimal places.

To calculate the Gibbs free energy (ΔG) available to do work for the given reaction, we need to use the formula:

ΔG = -nFΔE

where ΔE is the potential difference, n is the number of electrons transferred, and F is the Faraday constant (96.5 kJ/(mol e- × V)).

First, let's calculate the ΔE for the reaction by subtracting the reduction potential of the anode (NH4+ to NO2-) from the reduction potential of the cathode (O2 to H2O):

ΔE = E(cathode) - E(anode)

= (+0.82 V) - (+0.34 V)

= +0.48 V

Next, we need to balance the full reaction to determine the number of electrons transferred (n) when 440 moles of NH4+ are oxidized. The balanced equation is as follows:

8NH4+ + 6O2 -> 8H2O + 6NO3- + 16H+

From the balanced equation, we can see that for every 8 moles of NH4+ oxidized, 6 moles of electrons are transferred.

So, the number of electrons transferred (n) when 440 moles of NH4+ are oxidized can be calculated as:

n = (6 mol e- / 8 mol NH4+) × 440 mol NH4+

= 330 mol e-

Therefore, when 440 moles of NH4+ are oxidized, 330 moles of electrons are transferred.

Now, let's substitute the values into the equation:

ΔG = -nFΔE

= -(330 mol e-) × (96.5 kJ/(mol e- × V)) × (+0.48 V)

Calculating this expression, we find:

ΔG ≈ -15,427.20 kJ

for similar questions on  Gibbs free energy.

https://brainly.com/question/14680812

#SPJ8

Answer:

Cancer is caused by changes to certain genes that alter the way our cells function. Some of these genetic changes occur naturally when DNA is replicated during the process of cell division. But others are the result of environmental exposures that damage DNA.

Answer:

c.

Explanation:

the other answers aren't even true

The idea of shared, conserved core processes as evidence for a common origin of life is supported by the fact that all organisms possess DNA and undergo fundamental cellular processes. Thus, option A is correct.

The idea that all life forms share a common ancestor is strengthened by the idea of a universal genetic code and shared metabolic pathways. Option A is accurate because DNA and cellular functions like transcription and translation are present in all living things.

Options B and D are untrue because they refer to certain reproductive and cellular mechanisms that are not shared by all organisms. The occurrence of cellular respiration in mitochondria across different creatures does not necessarily point to a same origin, hence Option C is only partially correct. On the other hand, shared genetic and cellular processes offer persuasive proof that all life is related through a common ancestor.

To know more about DNA here https://brainly.com/question/21992450

#SPJ3

Answer:

Producers

Explanation:

A food web is all of the food chains in an ecosystem. Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemosynthesis, make up the bottom of the trophic pyramid.

Answer:

Hernia

Explanation:

Answer:ma

Ksssmmsma

Explanation:Manama

Am

The lake's pH has become acidic; in 1989, it was 6.7; by 1996, it had dropped to 5.1. This shows that the increase in the acidity which has several bad impacts on the lake water ecosystem and its community.

The freshwater ecosystem differs from the oceanic saltwater ecosystem in that freshwater contains phytoplankton, edible fish, and so on. The fresh water has a normal pH, but the pH decreases and induces acidity when the water is polluted with different chemicals, such as nitrogen oxide, sulfur dioxide, etc.

When acid rain happens due to man-made pollution, this further adds acidity to the fresh water, and as a result, the species that live in the lake are not able to live and breathe properly due to a lack of oxygen. The acidity in the table increased year after year from 1989 to 1996.

Hence, the acidity of the lake increased and the pH decreased in these years, from 1989 to 1996.

Learn more about the acidity, here

https://brainly.com/question/2066611

#SPJ1

Answer:

l think that the answer is A.. hope this helps

Answer:

hydrogen, pebbles, oxigen, carbon.

Explanation:

someting that is abiotic is someting that isn't living

Answer: If people say humans evovled from monkeys..why are monkeys still HERE?????????????????????????????????????????

Answer:

RNA polymerase II is the answer

Explanation:

mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II

Making RNA polymerase II correct

RNA polymerase II Being the answer