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Biochemistry

Biochemistry is the study of the structure, composition and chemical processes in all living organisms. It covers the structures and functions of various cellular components, including proteins, carbohydrates, nucleic acids, lipids, and other biomolecules.

8,065 Questions

Why does DNA have thymine when RNA has uracil?

Cytosine bases may spontaneously change into uracil bases. DNA has an enzyme asssociated with it that corrects this fault. If DNA contained uracil as a base, the repair enzyme would have no way of distinguishing between uracils normally present in the DNA code and uracils that had formed from cytosine. Therefore thymine is present instead of uracil.

What is micrococcus roseus?

Micrococcus roseus is a species of bacteria that is typically found in soil and water environments. It is characterized by its pink to red pigmentation, which gives it a distinct color. Micrococcus roseus is non-pathogenic and usually considered to be harmless.

What is the disease caused by lack of protein and carbohydrates?

A disease caused by lack of all macronutriets (carbohydrates, fats, and protein) is kwashiorkor. Symptoms include a swollen abdomen, cracking and scaly skin, and reddish hair. The mortality is about 60% and it also affects a person's physical and mental development.

Another related disease is Marasmus. Marasmus is caused by a lack of protein. This is generally less severe than Kwashiorikor.

What could possibly happen if the amount of biomolecules increased or decreased in the body Cite examples?

If the amount of biomolecules in the body increases, it could lead to conditions like obesity or metabolic disorders due to an imbalance in energy metabolism. On the other hand, a decrease in biomolecules can result in malnutrition, weakened immune function, and impaired cell repair and growth. For instance, excess glucose can cause insulin resistance and diabetes, while inadequate protein intake can lead to muscle wasting and impaired wound healing.

How do you store DNA extraction buffer containing PVP?

hi,

I work with CTAB extraction and I've noticed that is better to make the buffer without PVP and only add the PVP when you need the buffer.

So I take 20ml CTAB and add 0.8mg PVP. Mix it and I use it not longer than 1 week.

Hope this helps

What is antiparallel?

Antiparallel has a variety of meanings depending on what the subject matter is. For example, in biochemistry, it means the orientation of adjacent molecules. In traffic, its two parallel one-way streets that have traffic travelling in opposite directions.

What are all the vitamins minerals amino acids and other nutrients found in carrots?

There is vitamin a and vitamin c along with beta-carotene and alpha-carotene In order of the amount of nutrients, carrots have Vitamins A, K and C, dietary fiber, potassium, Vitamin B6, magnese, molybderum, Vitamins B1 and B3, phosphorus, magnesium and folate

How do enzymes speed up chemical reactions?

Enzymes lower the activation energy of a chemical reaction.

Can you lock your keys in a Peugeot 206?

Yes, you can accidentally lock your keys inside a Peugeot 206 if you exit the car with the keys still inside and the doors are locked automatically or manually. It's important to be cautious when exiting the vehicle to ensure you have your keys with you.

What is the recommended daily allowance of salt?

6 grams per day

Every source I have ever looked at says 2400 mg or 2.4 g is the upper limit for daily salt intake.
The recommendation for salt intake, per day, is 2,300 milligrams.

Does the enzyme that undergo negative feedback have any other function than to be regulated by its product?

Yes, enzymes that undergo negative feedback regulation typically have other important functions in the cell or organism. These enzymes are often involved in key metabolic pathways and play critical roles in maintaining cellular homeostasis and carrying out essential biological processes. The negative feedback regulation helps control the rate of these enzymatic reactions to ensure optimal function.

Why is Vitamin D so important to take in conjunction with Cailcum?

Hello. Vit D is extremely important to your health for many reasons but is specifically essential for proper absorption of calcium. Calcium is not easily absorbed by the body. A good calcium supplement has added Vit D to inusure good absorption. I can help you with more questions about nutritional suppliments or you can learn more about your own personal nutritional requirements if you take a free analysis on my web site at [www.able.unfranchise.com]. Just utilize the FREE, scientifically accurate, Nutri Physical tool on the right hand side of the page and you will learn what types of supplements are important to insure your own personal good health. You can contact me through my web site. Good health.

What is an universal appointment bond?

A universal appointment bond is a document that someone signs to ensure they will faithfully perform their duties as required by law. This is most commonly used for a witness who has to testify against someone who committed a crime.

What is a Snail protein?

It's a zinc finger protein that binds to E-cadherin* promoter to induce EMT (Epithelial Mezanchymal Transformation). It is mainly a gene regulator, it dissables the transcript of certain genes by binding to a promotor region known as "ebox". E-caherin.

*E-cadherin = a tight junction protein that make Epithelial cells to have epithelial shape and polarity.

Why are lipids insoluble in water?

== == Water molecules form hydrogen bonds with other water molecules because electrons are shared unequally between hydrogen and oxygen, in something called a polar bond. This is a result of oxygen's larger nucleus, which makes it attract electrons with more strength than the hydrogen atoms do (higher electronegativity), so that the electrons spend more time closer to the oxygen atom. The partial negative charge on the oxygen is then attracted to the partial positive charge on hydrogen atoms of other water molecules. This is the hydrogen bond, and it is energetically favourable. Fats are composed mostly of non-polar bonds (they have no elements with high electronegativity), which don't form hydrogen bonds. As a result the fat molecules do not interact well with water molecules, so they are 'repelled' by the water and do not dissolve.

More accurately, for water to dissolve fats, a large number of hydrogen bonds between water molecules would have to be broken. As this requires energy, it is not a favourable process. This makes it necessary for the water to adopt a cage structure, called a solvation shell, around each fat molecule, to minimise the unavoidable energy requirement. Unfortunately, this results in an unfavourable decrease in entropy (all systems aim to increase entropy). To minimise the loss in entropy, the fats will aggregate or lie on the surface of the water to reduce the surface area of contact between the fats and the water. This is the hydrophobic effect, and is the reason why fats are insoluble in water. Fats have lesser specific gravity than water. Thus, making it floaton water. But, if an emulsifying agent will be added to the medium, the surface tension will decrease cause for the two immiscible liquids to mix.

What is the main enzyme for breaking down glycogen?

The main enzyme for breaking down glycogen is glycogen phosphorylase. This enzyme catalyzes the phosphorylytic cleavage of glucose residues from the glycogen polymer, releasing glucose-1-phosphate for energy production.

Chemical formula of Muriatic acid?

Muriatic acid, a historical name for Hydrochloric acid, has the chemical formula HCl.

What is protein s?

Vitamin K–dependent plasma protein that inhibits blood clotting by serving as a cofactor for activated protein C. Not to be confused with S p. A protein is a chain molecule made up of amino acids made by living things.

What is the effect of replacing iodine with other oxidizing agents?

Replacing iodine with other oxidizing agents can have varying effects depending on the specific agent used. For example, using stronger oxidizing agents like bromine or chlorine can lead to faster reactions and higher yields in some cases. However, using milder oxidizing agents may result in different reaction selectivity or side product formation. It is important to consider the specific properties of the oxidizing agent and how it will influence the desired reaction outcome.

What are the basic science branches?

the branches of science are:

biology

chemistry

physics

zoology

entomology

thermodynamcis

volconanoloy.

zoology

meteorology

geology

virology

What are the hormones involved and what are their specific roles?

Some of the main hormones involved in the human body include insulin (regulates blood sugar levels), adrenaline (triggers "fight or flight" response), estrogen and testosterone (regulate reproductive functions), and thyroid hormones (regulate metabolism). Each hormone has specific roles in controlling various bodily functions and maintaining homeostasis.

Is it true that you all begin life as female at the time of conception?

It is true that during early fetal development, all embryos have structures that can potentially develop into either male or female reproductive organs. Around the 7th week of gestation, genetic factors determine whether the individual will develop male or female characteristics.

What are four types of organic molecules found in living things?

The four main types of organic molecules found in living things are carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are a source of energy, lipids store energy, proteins perform various functions in cells, and nucleic acids carry genetic information.

How do you solve a diffusion equation with a negative diffusion coefficient numerically It is unstable at all. Solving it with finite difference is best?

One common approach is using an implicit method (such as the Crank-Nicolson scheme) for numerical integration, as it is unconditionally stable. Another option is to use the exponential finite difference method, which can handle negative diffusion coefficients while ensuring stability. Additionally, modifying the equation to transform the negative diffusion coefficient into a positive one can also be effective for numerical stability.