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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 is the shape of an enzyme important?

The shape of an enzyme is important because enzymes are shape specific. Each enzyme can only react with one kind of substrate, and the enzyme's shape determines which substrate that is. They fit together like a "lock and key". If an enzyme is denatured (or its shape is altered from its active form), then it will not be able to bind to its substrate and the substrate's activation energy will not be lowered, usually resulting in the cessation of whatever reaction the substrate is undergoing.

How are vitamins and minerals similar?

Vitamins are organic compounds while minerals are inorganic and have a definite chemical composition. While some minerals are required by the human body, all vitamins are required by the human body for nutrition and health.

Do fish give off carbon dioxide?

Carbon dioxide is being absorbed by the oceans, which are thus becoming more acidic. This acid bleaches and kills coral and other tiny marine organisms. These are essential for larger animals further up the food chain! Shellfish are unable to make their shells as strong as before.

Why does a banana's skin look like it is still green while the inside is ripening?

A green banana is not a ripe banana. It is still edible, but it is not fully ripe, and it will eventually turn yellow and get sweeter and softer. Having said that, if bananas are exposed to cold temperatures for several hours the ripening process will be irreversibly stopped. This might explain why you can get bananas at the supermarket that are slightly green but will not ripen an further once you get them home. In all likelihood, they were exposed to prolonged cold temperatures during shipment and/or storage.

There are seven stages of ripeness. See Related questionsfor the different stages and the appearance of each stage.

How do catalysts work?

Catalysts work by providing an alternative pathway with lower activation energy for a reaction to occur, thus speeding up the rate of the reaction. They do not get consumed in the reaction and can be used repeatedly. This process lowers the overall energy required for the reaction to proceed.

How does sodium hydroxide kill bacteria?

Sodium hydroxide, also known as caustic soda, kills bacteria by disrupting the cell membrane and denaturing proteins in the bacteria. It is highly alkaline and corrosive, which can break down cell walls and interfere with cellular processes, leading to cell death. This makes it an effective disinfectant and cleaning agent.

How is Holy Water made?

Holy Water is typically made by a priest who blesses water during a religious ceremony. The priest may invoke prayers or perform rituals to sanctify the water and imbue it with spiritual significance. The blessed water is then commonly used in religious rites, blessings, and sacraments within the Christian faith.

What is UV spectroscopy?

UV Visible spectroscopy measures the response of a sample to ultraviolet and visible range of electromagnetic radiations. Molecules and atoms have electronic transitions while most of the solids have interband transitions in the UV and Visible range. Most molecules have a pi to pi* transition, involving pi electrons.

The most important kind of UV/Vis Spectr. is Dispersion based spectroscopy. It involves a disperive medium like prism or grating to separate the different wavelengths.

When was the last time Halley's comet passed?

== == Its last appearance was in 1986, and it is due back in 2061. I had the pleasure of seeing it in 1986; it wasn't an extremely dramatic show that time around, but beautiful nonetheless. See link for more information.

How do you demetallate a hemeprotein?

One way to demetallate a hemeprotein is to use a chelating agent, such as ethylenediaminetetraacetic acid (EDTA), which binds to the metal ion in the heme group and removes it from the protein. Another method is to use reducing agents, such as sodium dithionite, which can break the bond between the metal ion and the protein.

What is the difference between an absolute weight and a relative weight?

Absolute- Actual Age of a rock

Relative- The age of something compared to other things

Relative age does not tell how old something is but tells us in what order events have happened

relative- the age of a rock or fossil compared to the surrounding rocks and fossil

How is carbon dioxide formed from a mixture of sewage microorganisms and air?

In a sewage treatment process, microorganisms break down organic matter present in the sewage through respiration. As they respire, they release carbon dioxide as a byproduct. This carbon dioxide is formed when the organic compounds in the sewage are broken down and their carbon content is released into the environment as CO2.

Which sugar is NOT a reducing sugar?

Sucrose is not a reducing sugar because it does not have a free aldehyde or ketone group that can participate in the reduction reaction.

Is DNA hydrophilic molecule?

DNA is considered to be a hydrophilic molecule because of its structure and composition. The phosphate backbone of DNA contains polar covalent bonds that interact favorably with water molecules, making it water-soluble and capable of forming hydrogen bonds with water.

Calvin cycle takes place in the?

Calvin cycle takes place in the stroma of chloroplasts in plant cells. It is a series of reactions that occur during the light-independent stage of photosynthesis, where carbon dioxide is fixed into glucose molecules using ATP and NADPH produced during the light-dependent reactions.

Why is a concentrated acid not strong?

strong acids and bases dissociate completely; weak acids and bases dissociate only partially. In contrast, the term dilute and concentrated are used to indicate the consentration of a solution, which is the amount of acid or base dissolved in the solution. It is possible to have dilute solutions of strong acids and bases and concentrated solutions of weak acids and bases.

Principles of lieberman-burchard test?

It is a test for unsaturated steroids (as cholesterol) and triteness based on the formation of a series of colors (as pink to blue to green) with acetic an-hydride in the presence of concentrated sulfuric acid called also Liebermann-Burchard test

What is nutritional norms?

Nutritional norms refer to the recommended dietary intake levels of essential nutrients, such as vitamins and minerals, needed for optimal health. These norms are established by health organizations and are used as guidelines to help individuals maintain a balanced and healthy diet. Meeting nutritional norms can help prevent nutritional deficiencies and promote overall well-being.

Important vitamins to consume are?

Some important vitamins to consume are vitamin C for immune health, vitamin D for bone health, and vitamin B12 for energy production. It is also important to consume a variety of fruits, vegetables, and whole grains to ensure a well-rounded intake of essential vitamins.

Are fatty acids non-polar?

Grease is non-polar - vaseline, oil, wax - they are all hydrocarbons, with bonds that aren't polar. To remove a grease from your hands you need a non-polar solvent, not water.