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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

Can a compound be separated into its elements by filtration?

No, filtration is a physical separation method that separates solid particles from a liquid using a porous barrier. It cannot separate a compound into its elements because compounds are chemically bonded entities, not mixtures that can be physically separated by filtration. Chemical reactions are needed to break down compounds into their individual elements.

What is anaerobic life?

Anaerobic, connotatively translated, means "without oxygen". When used in discussions about Biology, the adjective has been applied most commonly to specific types of bacteria that do not need oxygen to carry out basic biological processes. Bacteria that are able to function without oxygen are called "anaerobes" Yeasts in beer and wine are usually anaerobic in nature and cause fermentation. The title "Anaerobic" can also be applied to environments in which there is little or no oxygen, such as a lake that has a low Dissolved Oxygen content. Anaerobic exercise involves movements that drain muscle tissues of oxygen, creating lactic acid accumulation. This accumulation leads to an oxygen debt that needs to be repaid after exercise. It does not mean that you hold your breath while you run on a treadmill!!

Is glucose is reducing sugar?

yes

Any sugar that has an aldehyde or a ketone group in solution is termed a 'reducing sugar'

Glucose is a reducing because:

1: It shows a positive to Fehling's Test for reducing sugars by forming a brick red precipitate.

2: Straight chain monosaccharides can act as mild reducing agents, because the aldehyde group that is present can be oxidized to form a carboxylic acid group and also can form a carboxylate ion group in the presence of a base.

Ring form monosaccharide does not have aldehyde group thus are not consider as reducing sugars but they are readily in equilibrium with the open chain thereby becoming a reducing sugar.

What role do enzymes play in living things and what affects their function?

Enzymes are biologic catalysts. Without enzymes ability to be reused instaed of destroyed and lower the energy of activation (EA) required for cellular functions, it would take years to break down and digest food.

How can two monosaccharides combine to form a larger molecule?

They start to form bonds. They all want to reach equilibrium and they are able to do this when they come in contact.

How do you draw an amino acid?

It is impossible to draw nicely in this text editor, so you'll have to look at the 'Related links' , there is the drawing of the pricipal structure and a picture of all, 20, alpha-amino acids.

What is the composition of molisch test?

molisch reagent is prepared by dissolving 5g of alpha napthol in 100 ml alcohol

What is a chemical cocktail?

A chemical cocktail refers to a mixture of different chemicals or substances, often used in scientific experiments, toxicology studies, or drug development. It can consist of various compounds combined in specific proportions to achieve a desired effect or result.

What are the three phases of the Calvin cycle?

1. Carbon Fixation

Step 1: 3 CO2 comes in and an enzyme called rubisco hopefully (when I say hopefully, I mean that because it might catalyze oxygen instead of carbon, which is bad) catalyzes carbon.

Step 2: The carbon is turned into RuBP (a 6 carbon), which is unstable, so it instantly turns into two of 3-PG (a 3 carbon). There are 6 of these.

2. Reduction

Step 3: The 3-PG get a phosphate each from ATP, which then turns into ADP. The 3-PG now become 3-biphosphoglycerate. There are 6 of these.

Step 4: The 3-biphosphoglycerate each get an hydrogen ion (H+) from NADPH, which then turns into NADP+.

Step 5: The molecule then and there loose a phosphate group, which goes back to restoring the ADP into ATP. The resulting molecule is called G3P, which is final goal for the Calvin Cycle. There are 6 G3P molecules.

3. Regeneration

Step 6: As I mentioned earlier, G3P is the main goal of the Calvin cycle, so only one out of the 6 are used for as organic compounds, whereas the rest go back in the cycle.

Step 7: The 5 G3P molecules that go back to the cycle are rearranged to become the molecule RuBP (ribulose biphosphate) and go back to step 2.

Read more: What_are_the_steps_in_the_Calvin_cycle

What is the role of urea in DNA extraction?

Urea is a chaotropic agent, and its role is obviously denature proteins and DNA, and promote more stability to the system, breaking the hydrogen ligations between DNA and water and making the intramolecular ones more stronger.

Is DNA amphipathic?

No, DNA is not amphipathic. Amphipathic molecules have both hydrophilic (water-loving) and hydrophobic (water-fearing) regions, while DNA is primarily composed of nitrogenous bases, sugar molecules, and phosphate groups that do not exhibit such dual nature.

What does a protein's alpha helices and beta sheets fold together to create?

Alpha helices and beta sheets fold together to create the secondary structure of a protein, forming the protein's overall 3D shape. This structure helps determine the protein's function by influencing how it interacts with other molecules in the body.

What does high-dry mean on a microscope?

Hi there,

i am a first year microbiology student and couldn't give you the most in depth answer, but...most microscopes have four different objective magnification lenses; 4x, 10x, 40x and 100x.

High and dry is referring to your 40x objective lense, because it's the highest magnification you can look through a microscope before you should put oil on your slide. Putting oil over your slide at 40x or lower simply blurs your scope vision whilst placing a drop of oil at 100x increases the amount of light and resolution you see due to the affects of refraction. It makes your view clearer.

I hope that helps.

What vegetables have vitamin b 12?

Vitamin B12 is typically not found in high levels in vegetables. It is mainly found in animal products like meat, fish, dairy, and eggs. For plant-based sources of vitamin B12, fortified foods or supplements are recommended for vegans and vegetarians.

Is sixty percent of carbohydrates a good percentage for a healthy diet?

Sixty percent of carbohydrates is on the higher side and may not be ideal for everyone. It's important to consider individual factors such as activity level, health goals, and tolerance to carbohydrates. A balanced diet with a variety of nutrients is key for overall health.

What does protein food mean?

Protein foods are foods that are good sources of protein, such as meat, poultry, fish, eggs, dairy products, legumes, nuts, and seeds. Protein is an essential nutrient that is important for building and repairing tissues in the body. Consuming protein-rich foods is important for overall health and wellness.

What is the approximate molecular weight of a protein with 682 amino acid residues in a single polypeptide chain?

Haha wait are you in Amherst College biochemistry? What are the odds that 682 showed up on another college's problem set?

Use 110 g/mol per amino acid (already corrected for the loss of water in amino acid condensation during formation of the protein) and multiply.

The bond formed between two or more carbohydrates?

A glycosidic bond is formed between two or more carbohydrates when a hydroxyl group of one carbohydrate molecule reacts with the anomeric carbon of another carbohydrate molecule, resulting in the formation of a covalent bond between them. This bond is essential for forming complex carbohydrates such as polysaccharides and disaccharides.

Is alcohal a drug?

Yes, alcohol is a legal drug. Anything that affects the body's functioning is a drug. Thus, salt, caffeine, vitamins, and many more things are drugs.

Is OH hydrophobic or hydrophilic?

OH is hydrophilic because it contains a polar covalent bond between oxygen and hydrogen, allowing it to form hydrogen bonds with water molecules. This makes OH groups soluble in water and interact well with polar substances.

Why is the plant cell wall not affected by penicillin?

Penecillin doesn't attack the cell wall directly, but inhibits one of the enzymes involved in its synthesis in bacteria. The same enzyme isn't present in plants, so they are unaffected.

The plant cell wall is made up of cellulose, whereas the bacterial one is peptidoglycan (sugars and amino acids). Chemically, they're not very similar.

What is the role of sucrose in RBC lysis buffer?

The role of sucrose in lysis buffer is for subcellular fractionation. It refers to a laboratory technique that uses differential centrifugation to separate the different components of the cell.

What relation do indigestible plant fibers prokaryotes and vitamins have with the digestive system?

Indigestible plant fibers help promote healthy digestion by providing bulk, promoting regular bowel movements, and feeding beneficial gut bacteria like prokaryotes. These bacteria help break down fibers and produce essential nutrients and vitamins like vitamin K and certain B vitamins, which are important for overall digestive health and function.