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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

What is basic difference between the structures of Cellulose and Starch?

Both, cellulose and starch, has a linear structure of glucose monomers connected by glyosidic bonds (1-4 glycosidic bond = Carbon atom number 1 linked with Carbon atom number 4 of the next glucose monomer's).

The basic structural difference is whether the linkage is alpha or beta glycosidic bond.

(Alpha and beta denotes the spatial aspect of the bondage. Alpha bondage is below the plane, beta bondage is above the plane).

Cellulose is linked by beta-1-4 glycosidic bonds.

Starch is linked by alpha-1-4 glycosidic bonds.

Can you take antacid and vitamin c at the same time?

Okay, I am not entirely sure but I think that taking Vitamin C and an antacid simultaneously may cause a neutralization reaction to occur. Thus the effects of both would not be felt. This is most likekly wrong, not sure

Why is the Benedict test not exclusive to glucose?

The Benedict test will return a positive value for any reducing sugar. It will work with fructose, for example. Benedict solution oxidizes all the reducing sugars such as glucose, galactose and fructose. This implies that a positive result of Benedict's test can be any of the reducing sugars, not necessarily glucose. It will oxidize the carbonyl (which present in all type of sugar classes). So if we get a positive result in the Benedict test, it is not necessarily glucose; it could be galactose or fructose that also a reducing sugar. So Benedict test can't be used to assure glucose.

The motion phospholipids make in a plasma membrane?

Phospholipids in a plasma membrane exhibit lateral diffusion, allowing them to move sideways within the plane of the membrane. They can also undergo flexion and rotation, enabling the membrane to adjust to changes in shape and movement of the surrounding molecules. These motions collectively contribute to the fluidity and dynamic nature of the plasma membrane.

What is word miscible and immiscible used procedure?

If two liquids are miscible, it means they are capable of being mixed together in all proportions. For example, water and ethanol are miscible as they mix together.

If two liquids are immiscible, it means that they don't mix together and they don't form a solution in some proportion. For example, water is immiscible with oil.

What is the healthiest yummiest food?

The term "yummiest" can only be defined by you. But if you want something really healthy, try real oatmeal, not processed or anything. Not the instant oatmeal ones either.

How many RPM and time needed to centrifuge sample in Total Carbohydrate Determination by Anthrone Method?

Typically, samples are centrifuged at around 3000 RPM for 10-15 minutes in the Total Carbohydrate Determination by Anthrone Method. However, specific protocols may vary depending on the type of centrifuge and sample being used, so it's important to follow the guidance provided by the protocol or kit instructions.

What is the termination signal?

The termination signal is a sequence of DNA that signals the end of transcription in prokaryotic organisms. This signal causes RNA polymerase to detach from the DNA template strand, releasing the newly synthesized RNA molecule. In eukaryotic organisms, termination signals are more complex and involve multiple factors.

Nitrogenous base that bonds with thymine?

DNA contains four kinds of nitrogenous base: adenine (A), thymine (T), guanine (G) and cytosine (C).

The DNA molecule is a double helix. It consists of two strands of smaller molecules called nucleotides wrapped around each other.

Each nucleotide is itself made of three components. These are a sugar (deoxyribose), a phosphate group and one of the four nitrogenous bases.

EAch strand in the DNA double helix consists of a 'backbone' of alternating sugar and phosphate groups with a nitrogenous base attached to each sugar. The bases in the two strands project towards each other and the strands are held together weak electrical bonds (called hydrogen bonds) between the bases.

The bases in the two strands always form specific base pairs. This means that an adenine in one strand always binds to a thymine in the other strand. Similarly, a guanine in one strand always binds to a cytosine in the other strand.

The bases consist of rings of carbon and nitrogen atoms. Thymine and cytosine have a single ring and are called pyrimidines. Adenine and guanine have a double ring and are called purines.

This double helix structure of DNA was discovered by James Watson and Francis Crick in 1953, marking the beginning of the age of molecular biology. Their proposal of a double helix was partly based on data supplied by Rosalind Franklin, who thought at the time that attempts to build models of DNA structure were premature.. For more detail of Franklin's contrribution see http://en.wikipedia.org/wiki/Rosalind_Franklin.

For more information see:

http://learn.genetics.utah.edu/units/basics/see right there you reaaaly dont need all that ok.

What is the positive inside rule?

The positive inside rule is a general rule for membrane proteins. Because of the mechanism involved in transmembrane domain insertion (regions of the protein which cross the membrane), membrane proteins tend to have more residues which can take on a positive charge on the inside of their cells. So, almost all, if not all membrane proteins have more solvent exposed Lysine and Arginine residues on the sides of the transmembrane domains which rest inside of the cell in comparison to the number which rest on the outside of the cell.

Why might a lack of glycogen be a problem?

A lack of glycogen can be a problem because it is the primary stored form of glucose in the body and acts as a quick source of energy. Without sufficient glycogen stores, the body may struggle to maintain energy levels during physical activity or periods of fasting, leading to fatigue and decreased performance. Additionally, low glycogen levels can impact blood sugar regulation, which is crucial for overall health.

The water-soluble vitamin that aids in iron absorption and promotes healthy gums and teeth?

Vitamin C is the water-soluble vitamin that aids in iron absorption and promotes healthy gums and teeth. It helps enhance the body's ability to absorb iron from plant-based sources, and its antioxidant properties support oral health by maintaining healthy gums and teeth.

Why DeNovo path way absent in RBC and brain?

The De Novo pathway for purine synthesis is absent in mature red blood cells because they lack a nucleus and therefore cannot synthesize new enzymes needed for the pathway. In the brain, de Novo pathway activity is limited because the brain primarily relies on salvage pathways to recycle and reuse purine bases rather than synthesizing them from scratch.

When baking soda and cold vinegar are mixed together does it make a bigger reaction than room temperature vinegar?

Mixing cold vinegar with baking soda will result in a smaller reaction compared to using room temperature vinegar. This is because the reaction between baking soda and vinegar is exothermic, meaning it produces heat. Warmer vinegar provides more energy for the reaction, leading to a more vigorous fizzing reaction.

In the story cytopolis what represents the nucleus?

Nucleus:Palace

Vacuole:Lake

Chloroplast:Sorcerer

E.R.:narrow, winding streets

Nuclear Membrane:wall

Cell membrane:dense band of forest

cell wall:wall

Mitochondria:woodcutters

Lysosome:scrap-shops

Cell:Kingdom

Ribosomes:shops

Dna:king

Rna:messengers from the king

Type of Cell:Plant Cell

What is a non example of a polymer?

An example of a non-polymer would be water (H2O), which is a small molecule made of two different types of atoms (hydrogen and oxygen) that are not linked together in a repeating chain like in a polymer.

Where is energy stored in an unlit candle?

the energy stored in an unlit candle is chemical potential energy, and it is stored in the bonds between the atoms in the hydrocarbons (wax) that make up the candle.

What are the two common names for the structure of DNA?

The two common names for the structure of DNA are double helix and spiral staircase.

A double-stranded DNA molecule contains a total of 120 purines and 120 pyrimidines This DNA molecule could be composed of?

I don't really understand the point of the question but let's see what we can do.

Purines are Adenine and Guanine

Pyrimidines are Tyimine and Cytosine

Since A pairs with T and G pairs with C, the molecule can be composed of any number of ACTG where

A+G=C+T=120

and

A=T and G=C

Hope that helps.

How can rusty nails be clean?

Rusty nails can be cleaned by using a wire brush or sandpaper to remove the rust. Once the rust is removed, the nails can be soaked in a vinegar solution, lemon juice, or a commercial rust remover to further clean and restore them. After cleaning, dry the nails thoroughly to prevent them from rusting again.

What enzyme dissolves starch?

Amylase is the enzyme that breaks down starch into maltose, a type of sugar. It is found in saliva in the mouth and in the pancreas.

What foods have no nutritional value?

Any food that has very little calories.

Water is a good example, it has no calories; yet its very valuable to the human body. We are all literally made of water.

Sweet N Low is another.

What is the chemical formula of creatine kinase?

Creatine Phosphate + ADP --> (Creatine Kinase) --> Creatine + ATP

What reagent used to test heller's test in protein precipitation?

Heller's test uses strong acids, such as nitric acid or trichloroacetic acid, to precipitate proteins. The protein precipitation occurs due to denaturation of the proteins in the presence of the acid, leading to their insolubility and precipitation.