Biochemistry Questions
Asked by Users

What substance is oxidized in this equation?  This is the equation:
C6H1206 + H20 + 6 C02 + energy

Why starch is insoluble in water?  Starch,a homopolysaccharide is insoluble in water due to the presence of larger macromolecules.

What is DNA's primary function?  This is a question on one of my review papers for Biology.

Read our review on Nucleic Acids .

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What will prevent enzymes from functioning properly?  Click on post comments to answer.

What does an enzyme do?  Click on post comments to answer.

The derivative bases of pyrimidine are called what?  Thymine, cytosine and uracil?

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What are the building blocks of nucleic acids?  Click on post comments to answer.

What is the effect of cofactor on enzymatic activity?  Click on post comments to answer.

If an organisms DNA contains 20% of adenine nucleotides, what percentage of its DNA is composed of thymine nucleotides?  Click on post comments to answer.

Unsaturated fats contain more bonds than saturated fats?  In unsaturated fats what bond is more present than in saturated fats?

What is the relation between the transport of electrons and the production of heat?  I will really appreciate if you can respond to my question.

What is the name of essential amino acid that is purely ketogenic?  Plz ans.

Could you survive on a diet which contained no carbohydrates?   Also I have to justify for the answer. Please help I need it asap.

Why solving protein structure is important?  I am studying unknown lipoproteins from a human pathogen.It is considered as a potential virulence factors.I am working in a lab which does X-ray crystallography....

What is the simplest chemical substance that cannot be broken down?  a. compound
b. atom
c. element
d. hydrogen

Describe the structure of hydrogen, carbon, oxygen and nitrogen and relate these to the structure of biological molecules.  Describe the structure of hydrogen, carbon, oxygen and nitrogen and relate these to the structure of biological molecules.

Are ions responsible for enzyme activities?  ?

What are the differences between oxidation and reduction?  1.Addition of oxygen atom is called oxidation.
2.Removal of oxygen atom is called reduction.

When an enzyme is cooled is that called denaturation?  Yes?

What are the differences between DNA and collagen protein?  Five differences are needed, in terms of their structures, functions, or anything else.

Why proteins are diverse, complex nitrogenous compound with several biological functions?  I need someone to do it for me please.

What is the difference between enzyme activator and enzyme inhibitor?  ?

Most of the gases in Earth's atmosphere probably came from what source?  I don't know this answer.

How is the quaternary structure of proteins important?  Proteins.

Does actually water compose around 60% of our body?  Water is vital for our body.

What is the molecule that carries out instructions coded in DNA?  Guanine
Uracil
Thymine
RNA

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What is biologically made from carbon and water?  A)Carbohydrates B)Lipids C)Proteins D)Nucleic Acids?

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An enzyme functioning best at a pH 3 is in neutral solution at a temperature of 40 degree centigrades. Its activity will increase by?  Click on post comments to answer.

Why oxyhemoglobin is an unstable compound?  I think the answer would be: because there is a chemical bonding between oxygen and hemoglobin.

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Why do enzyme active sites have metal ions?  What is the role of a metal ion in the active site?

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What is an inhibitor that binds at the active site of an enzyme?  Click on post comments to answer.

What are the biological functions of NaCl?  NaCl functions as a preservative for food resources. Example like pickles.

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What are types of lipids that include fats and oils?  Fats and oils are made from two kinds of molecules: glycerol and three fatty acids joined by dehydration synthesis. Since there are three fatty acids attached,...

What are channel proteins?  Click on post comments to answer.

What happens to the hydrogen in living cells when methylene blue is not present?  Click on post comments to answer.

Which step of scientific inquiry involves testing the hypothesis and collecting data?  Experimentation, conclusion, analysis, and hypothesis.

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What happens to the enzyme after the optimum temperature?  Click on post comments to answer.

Would modifying the Hershey-Chase experiment by labeling nitrogen of DNA rather than phosphate work and why?  Amino acids also have nitrogen atoms thus the radioactivity would not distinguish between DNA and proteins.

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What types of interactions are responsible for the stabilization of cellulose polymers in cellulose cables?  Ionic interactions, h-bonding, or hydrophobic interactions.

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Why should ions be protected from lipid bilayers when transporting through a cell?  Click on post comments to answer.

What is isoenzyme?  Click on post comments to answer.

What are the enzymes involved in apoptosis?  Caspases?

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In a living organism, where chemical reactions take place?  Click on post comments to answer.

What are lipids?  Click on post comments to answer.

Why when a reaction of enzyme amylase increases while the concentration of starch increases it only increases to a certain extent and then stopped?  Increasing of startch concentration.

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Why is tryptophan abreviated as W?  Click on post comments to answer.

Is DNA a protein?  Click on post comments to answer.

What property of carbon allows it to be formed into so many different molecules?  Click on post comments to answer.

With relevant examples/show how first law of thermo dynamics explains the idea of bioenergetics?  With relevant examples show how first law of thermodynamics explains the idea of bio-energetics?

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What is the function of enzymatic activity in the plasma membrane?  The protein in the plasma membrane may provide a variety of major cell functions?

Are RNA molecules complementary to their DNA template?  Are RNA molecules complementary to their DNA templates?

What are the base pairs in DNA?  Answer?

What conditions does optimal enzyme activity depend on?  A pH of usually 6-8, and around 98.6º.

Why is it better to calculate the initial rate of change from a curve , rather than simply measuring how much oxygen is given off in 30 seconds?  Enzymes.

What is the importance of proteins?  For formation of cell membrane...

How do the structures of the nucleotides in a DNA molecule differ from one another?  I dont have a clue to what the answer is.

What is the relationship between activation energy and a catalyst or enzyme ?   Pls, answer.

What is the general formula for lipids?  Formula.

What is the energy transformation involved in the process of photosynthesis (components -light, chemical and heat energy)?  Don't know.

Does increased substrate concentration (hydrogen peroxide) affect enzyme activity (catalyst)?  Catalyst which is the enzyme, and hydrogen peroxide which is the subtrate. Does the increase of hydrogen peroxide affect the enzyme activity of the catalyst?...

What are long chains of amino acids found in?  Carbohydrates or lipids or proteins or sugars.

Is there twice the amout of hydrogen as oxygen in amino acids?  How much hydrogen is there in an amino acid?

If one nucleotide is replaced by another, this is an example of a...  If one nucleotide is replaced by another, this is an example of a...

Will the molecule polyalanine have its 3D structure altered by a change in pH?  Does polyaspartic acid behave so?

Does water produce salt?  Yes or no?

Chitin is an example of?  What is chitin?

An atom is defined as a smallest ?  Particle of a coumpound or element.

Note: This is Chemistry!

The formation of a peptide bond between two amino acid molecules during the protein synthesis results in the formation of what?  a. carbon dioxide
b. water
c. sugar
d. nitrates
e. carbolic acid

What is the contrast between induced fit and enzyme inhibitors?  I don't know.

What happen to enzyme below pH optimum?  What happen to enzyme below pH optimum?

When a person consumes a packet of pure sugar and burns it for energy, where does the carbon in the sugar ultimately go?  I believe it gets released as carbon dioxide.

What roles does the R group play in the structure and functions of proteins?  Structure of proteins, functions of proteins, R group of amino acids.

Why is the sky blue?  Why?

Are carbon atoms bond ionically?  TRUE OR FALSE?

Is potassium hydrophillic?  I need to know if potassium is capable of absorbing water.

What is the structural formula of a lipid?  Thanks to all that answer!

What includes fats, oils and waxes?  I have no idea!!

Why could a diet low in carbohydrates be dangerous?  Why?

What is the significance of “activation energy” to a reaction? How do enzymes overcome this thermodynamic barrier?   ?

What is an example model of an oligopeptide?  Explain me... please... give the picture (structural configuration)?

What are lipids?  Lipids can be used to store energy.

What is the difference between cofactors and prosthetic groups and coenzymes?  I dont know and i really need to know! Does it have anything to do with organic and inorganic?

How are enzymes destroyed?  Enzymes.

Explain how enzyme activity changes as enzyme concentration decreases, and discuss why this occurs (on a molecular level).  Hydrogen peroxide?

How many hydrogen bonds can be seen in your deoxyribonucleic acid model if 3 hydrogen bonds connect g-c pair and two hydrogen bonds connect an a-t pair?  It's all about DNA. I wish to get the answers here.

What is different between myoglobine and hemoglobine structure?  Structure.

Why do pH, temperature and concentration affect the reaction of enzymes?  I know this affects it, but why?

How do non polar regions of membrane proteins cause the protein to be held in the membrane?   On the interior surface, peripheral proteins typically are held in position by the cytoskeleton.

Why is it important to know the structures of proteins?  Amino acids?

What are some experiments that can be tested regarding optimal enzymatic action?  Varying two conditions which may affect the rate of reaction of the enzymatic process. Rate of reaction can be measured by monitoring the change in pH....

Does HCL lower the acidity of pH?  Please help does HCL lower the pH of enzymes making enzymes more acidic?

What are biological roles of mineral salts?  e.g. NaCl

How does concentration affect enzyme activity?  Pls, answer.

Why do guanine and cytosine bind more strongly together than adenine and thymine?  Do they?

What is the enzyme peroxidase?  Peroxidase is an enzyme that breaks down hydrogen peroxide into harmless water and oxygen.

Minerals provide the materials the body uses to build new...?  Nutrients: the building blocks for health...

Which stores the most energy, protein, fat, carbohydrate or alcohol?  Carbohydrate?

What is the relationship between enzyme and protein?  Relate the concepts.

What kind of reaction do carbohydrates undergo?  Formation of glycosidic bond...