Biochemistry Questions
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What Others Have Asked

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

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 . Click on post comments to answer.

What is the molecule that carries out instructions coded in DNA? 
Guanine Uracil Thymine RNA Click on post comments to answer.

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? Click on post comments to answer.

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.

Which step of scientific inquiry involves testing the hypothesis and collecting data? 
Experimentation, conclusion, analysis, and hypothesis. Click on post comments to answer.

What is isoenzyme? 
Click on post comments to answer.

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

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.

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

Can a primary structure determines cloning? 
To clone and sequence the DNA that encodes a particular protein. Study Nucleic Acid .

How are genes and proteins related? 
Read Protein Synthesis Made Easy .

What is enzyme inhibition? 
Read Enzyme Activity .

What are the functions of DNA? 
Study Nucleic Acid .

Biological importance of lipids. 
Read Fat Review - Lipids Explained on Biology Questions and Answers .

Why small molecules GLP-1 positive allosteric modulators showed effect in db/db mice but did not show any effect in c57 mice? 
Why small molecules GLP-1 positive allosteric modulators showed effect in db/db mice but did not show any effect in c57 mice.

How is energy in a molecule released? 
Study Biochemistry Review - Questions and Answers for Biology Exams .

What is important to keep electrolytes balance in our body? 
Without an adequate amount of mediators, cofactors , and electronic charges in the membrane is impossible to dispon properly of the substrates necessaries …

Formula for water, carbon, dioxide, glucose, oxygen. 
Water :H2O Carbon Dioxide :CO2 Glucose :C6H12O6 Oxygen :O

Did the mutations result in a change in the final proteins? If so, describe the change. 
This question came as a result of an amino acid encoding process where tRNA and mRnA were combined. Read Protein Structure .

What is an inactive enzyme? 
It does not increase the rate of chemical reaction. Read Enzyme Activity .

What elements are present in aspartame? 
Read Carbohydrates Properties Review from Biology Questions and Answers .

What are the common isomers of glucose? 
manose, fructose, galactose, glucose... Read also Carbohydrates Properties Review from Biology Questions and Answers .

Which type of organic substance is estrogen? 
If it is a protein, carbohydrate, etc. Study Fat Review - Lipids Explained on Biology Questions and Answers .

Which of the folowing is an amino acid? 
A. C27H45OH B. C12H22O11 C. C11H12N2O2 D.C40 h80NO8p

What type of molecules have Orange juice, Celery, Cranberries, egg white and table sugar? 
Study Biochemistry Review - Questions and Answers for Biology Exams .

What is denaturation of proteins? 
Read Protein Structure .

Among the groups which make a typical amino acid, which one imparts the unique characterictics to a molecule and to the proteins that contain it? 
The groups to select from are as follows: A. A carbon B. Amino Group C. Carboxyl Group D. Variable R Group E. A hydrogen atom I've been unsuccessful …

What is partially hydrogenated vegetable oil? 
Study Fat Review - Lipids Explained on Biology Questions and Answers .

The pH scale is a mathematical indicator of _______. 
The pH scale is a mathematical indicator of _______.

What do salty solutions do to enzymatic activity?  
Enzymes are chemical catylists in the body. Study Enzyme Activity .

What process takes place when a molecule of fructose combines with a molecule of fructose to form sucrose? 
Study Carbohydrates Properties Review from Biology Questions and Answers .

What are the building blocks of complex carbonhydrates? 
Read: Carbohydrates Properties Review from Biology Questions and Answers

How can catalytic activity be changed? 
E.g. Phosphorylation, proteolysis etc.

What are the motor proteins, for example, kinesin and dynein? 
One of the function of cytoskeleton is movement. What are the motor proteins for example, kinesin, and dynein?

What is the role of water in ionization of cells? 
When the cell is negatively charged at the inside and then positive at the outside.

How is a polymer made? 
With positive ions?

How biomolecules perform they work in our body? 
biomolecules like corbohydrates,proteins,lipids and fats

What is catalase? 
Where is it found specifically? What is its function in relation to the human body? what is it? Why is it important? What is its function in general?

How are the polypeptide parts different from the heme parts? 
Click on post comments to answer. Read our review pages on Biochemistry.

What is the role of hydrogen bonding in lipids? 
Click on post comments to answer. Read our page on lipids under Biochemistry.

With reference to examples of specific proteins, explain how secondary, tertiary and quaternary structures can influence protein function? 
Secondary, tertiary and quaternary structures of proteins are spatial structures. If they were to undergo denaturation, that would make the protein biologically …

What is the diferences between phosphorylation, oxidative phosphorylation and substrate level phosphorylation? 
phosphorylation,oxidative phosphorylation and substrate level phosphorylation

Why is iodine important for human beings? 
Click on post comments to answer.

How amino acids are grouped? 
Click on comments below to answer.

Why Aalosteric enzymes do not obey Michaelis-Menten kinetics? 
Allosteric enzymes do not obey Michaelis-Menten kinetics. The reason for this is that allosteric enzymes must account for multiple active sites and multiple …

What are the two main roles of enzymes? 
The mechanisms of enzyme action.

Which enzyme acts on pH 2? 
trypsin or pepsin

Relate the biological importance of water to its peculiar characteristics by stating concrete examples in nature? 
water as a solvent? high heat capacity? high heat of vapourisation? high heat of fussion? density and freezing properties? high surface tension and …

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. …

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.

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

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

What is biologically made from carbon and water? 
A)Carbohydrates B)Lipids C)Proteins D)Nucleic Acids? 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. Click on post comments to answer.

Why do enzyme active sites have metal ions? 
What is the role of a metal ion in the active site? Click on post comments to answer.

What are the biological functions of NaCl? 
NaCl functions as a preservative for food resources. Example like pickles. Click on post comments to answer.

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 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. Click on post comments to answer.

What types of interactions are responsible for the stabilization of cellulose polymers in cellulose cables? 
Ionic interactions, h-bonding, or hydrophobic interactions. Click on post comments to answer.

What are the enzymes involved in apoptosis? 
Caspases? Click on post comments to answer.

What are lipids? 
Click on post comments to answer.

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

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

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

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

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? …

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...

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!

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

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.

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 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 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.

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 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...

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



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