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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 enzyme is used in reverse transcription?

Reverse transcriptase is the enzyme used in reverse transcription to generate complementary DNA (cDNA) from an RNA template.

Who is Flordeliz R Uyenco?

Flordeliz R Uyenco is a Filipino scientist known for her research in the field of electrochemistry and environmental science. She has contributed to the development of innovative materials and technologies for cleaner energy production and environmental remediation. Uyenco has also been recognized for her efforts in promoting sustainability and advancing scientific knowledge in the Philippines.

Where in the cell do electron transport chain occur?

In the mitochondria. The complexes need for the electron transport chain are attached on the inner side of the inner mitochondrial membrane, which channels opening into the intermembrane space for pumping out protons.

What are the foods that are good for the skeletal system?

Foods rich in calcium, such as dairy products, green leafy vegetables, and nuts, are beneficial for the skeletal system. Additionally, foods high in vitamin D, like fatty fish and fortified foods, help in the absorption of calcium. Protein-rich foods like lean meats, beans, and seeds are also important for maintaining bone health.

How does carbon dioxide affect cerebral artery?

CO2 causes vasodilation of the cerebral artery. The mechanism is pressumed to be due to direct effect of CO2 on the wall of the blood vessels.

Anecdotal/clinical evidence:

In emergency head injury, raised intracranial pressure can be treated by hyperventilating the patient. Hyperventilation reduces the PaCO2 in the blood. This causes vasoconstriction of the cerebral vessels and reduces ICP almost immediately.

Does photosynthesis happen under black filter paper?

If the paper is thick enough to prevent any light from passing through it then no photosynthesis will occur in the area covered by the paper.

What determines the primary function of a protein?

The primary function of a protein is determined by its amino acid sequence, which dictates its shape and structure. This, in turn, influences the protein's ability to interact with other molecules and perform specific tasks in the body, such as catalyzing reactions, transporting substances, or providing structural support. Additionally, the environment in which the protein is found can also influence its primary function.

What is the difference between autotrophic and holophytic nutrition?

Holophytic and autotrophic nutrition are almost the same thing. Photoautrophs can be called holophytes, which is most autotrophs, but some autotrophs produce food by chemical synthesis, i.e. not in the presence of sunlight. They are chemoautrophs and not holophytes.

Similarly, holotrophic and heterotrophic are almost the same. All heterotrophs which are not saprophytic or parasitic are holotrophs as well.

Why did god made nitrogen more abundant than oxygen?

oxygen is used by human and animals for respiration but nitrogen do not. for consuming nitrogen plants need nitrogen fixation thus occurs on low scale on other hand

oxygen is directly used so its cunsumbtion is more then nitrogen. another important point is that oxygen is used in burning, formation of water etc thus means ratio of cunsumbtion of oxygen is more then nitrogen ,if there was more oxygen then it would lead to a blast every time there was a spark

What organic acid is present in all living things?

The organic acid present in all living things is citric acid. It plays a crucial role in the citric acid cycle, also known as the Krebs cycle, which is a central metabolic pathway for producing energy in cells.

Why does chemistry effect all aspects of life and most natural events?

Chemistry is extremely far reaching, and has such a profound impact in life there is the study of Biochemistry.Additionally, water, which is key for life, has many properities explain by chemistry. Chemical reaction are constantly happening in the world around us, and are completely unavoidable. Ever wonder how you digest? Why your stomach has acid in it? This is because enzymes in your stomach are "activated" by the low ph present in your stomach acid (HCl). A base is introduced in the small intestine to counteract the acid from the stomach. This is needed for the next set of enzmes to work. Water-the stuff of life. Water is one of the few substances that is denser than it's solid form(ice). This allows ice to float, in a lake, this cause the surface to freeze, keeping the water below the ice to stay warm and life to continue. Water also has a high specific heat, which means that it takes more energy to heat water. Water is also one of the few molecular substances that is a liquid at room temperature. Many of water's proporerties are explain through H-bonding. Water's molecular formula is H2O. H-bonding is an intermoluecular force, a force that holds individual molecules in a substance together. Of all the intermolecular forces H-bonding is the strongest. This means more enery is required to overcome it. This allows for higher-heat capacity, and in water, the liquid form to be denser that the solid form because of how the bonds align. H-bonding occurs in water as it occurs when an Oxygen(or Fluorine or Nitrogen) atom is bonded to a Hydrogen atom. Water is also a highly polarsubstance, which means one end has a negative charge (Oxygen) and the other end(hydrogen) has a polar charge. This is why water is a universal solvent-most substances disolve in it. It is also why some substances such has oil do not disolve in it. All around you chemical reactions are occuring. A chemical reaction is often used to: * provide energy (ie. the combustion of gasoline in your car engine) * Cool a substance (such as the cooling system in your car) * Depress the freezing point of substance (adding salt to ice)

What is an enzyme considered because of its ability to recognize the shape of a particular molecule?

An enzyme is considered a substrate-specific catalyst because it is able to recognize and bind to a specific substrate molecule due to the complementary shape of their active sites. This specificity allows enzymes to efficiently catalyze chemical reactions by facilitating the formation of enzyme-substrate complexes.

Which amino acid has an imidazole group?

Histidine is the amino acid that has an imidazole group in its side chain. This group can act as a proton donor or acceptor in biochemical reactions due to its basicity.

Are long chains of carbon atoms and acid groups found in lipids?

Yes; Lipid molecules are long chains of carbon atoms [-CH2- groups - the tail end] that have an acid group at the head end.

Lipids are of two types: [saturated] fats come from animals and are solid at room temperature, while oils [with several different types of unsaturation] come from plants and are liquid at room temperature.

What role does the tongue play when food is being chewed?

the tongue provides saliva so that the food can go down and your teeth break it down.
As far as i know it doesnt,althought your saliva might break it down your teeth do that, you stomach and intestines break down the food and turn it into a liquid and then it..you know.. Hope i helped

Foreign scientists and their contributions to chemistry?

Too many to list

An iconic figure is Alfred Nobel who was a Swedish Chemist who discovered trinitrotoluene or TNT. Upon realizing the destructive power of TNT in warfare he instituted the Nobel Peace Prize that is awarded not only to chemists but all fields.

What contains information to produce a single polypeptide?

Messenger RNA (mRNA) contains the information needed to produce a single polypeptide during translation. The sequence of nucleotides in the mRNA molecule is translated by ribosomes to determine the order of amino acids in the polypeptide chain. This process occurs in the cytoplasm of the cell.

Who is the father of enzymology?

The father of enzymology is considered to be the French chemist and microbiologist Louis Pasteur, who made significant contributions to the field of enzyme research in the 19th century. His work on fermentation and the role of enzymes in biochemical reactions laid the foundation for the development of enzymology as a scientific discipline.

Beans in the dark will grow faster then the beans in the light why?

Beans grown in the dark tend to grow faster than those grown in the light because they allocate more energy towards elongating their stems to reach for light. In the absence of light, the energy is redirected into stem growth instead of leaf development, resulting in taller plants.

Low speed centrifuge and high speed centrifuge?

The terms are relative, like high power and low power for motors. It is relative to RPM. All centrifuge speeds are delineated in RPM. revolutions per minute. The type used in medical labs require specialized centrifuge test tubes (tapered and made of pyrex or some special centrifuge-specific glass). These normally run at a set speed but may have limited speed range control with a directional knob. There are really heavy duty centrifuges which are horizontal axis and look almost like UFOs and have a variety of chemical processing applications.

What is The meaning of phosphorous?

Phosphorus is one of the mineral elements, indeed a major mineral required by the body for its proper metabolism. The term metabolism used here is in a loose sense. Actually, phosphorus level in the body is checked alongside with that of calcium. This is done by the hormone secreted by the parathyroid gland, the parathyroid hormone (PTH). This hormone is supported by the prohormone, provitamin D3, which is actually produced by the direct rays of the UV light at about 298nm on a substrate know as 7-dehydrocholesterol found on the skin.

The regulation of phosphorus alongside with calcium in the body is important in bone formation and mineralisation as well as in teeth formation. The amount of these minerals in different parts of the body like the bone marrow and the plasma must be controlled effectively to avoid disease states.

Can you explain me with pictures of mode of nutrition in different animals?

There are two types of nutrition .they are: autotroph and heterotrophic nutrition .

1.autotrophic nutrition:the mode of nutrition whereby a living organism makes its food.

2.heterotrophic nutrition:the mode of nutrition in which organisms cannot manufacture food and have to depend on other plants and animals for energy.

thank you .by g.sreemathi vii-'d'

What are first messenger molecules?

First messenger molecules are signaling molecules that bind to specific receptors on the cell surface, initiating a cascade of intracellular signaling events. Examples include hormones such as adrenaline and insulin, as well as neurotransmitters like dopamine and serotonin. By binding to their respective receptors, first messengers trigger cellular responses.

Which is more concentrated 5 percent NaHCO3 or 5M NaHCO3?

5M NaHCO3 is more concentrated than 5 percent NaHCO3. Molarity (M) measures the concentration of a solution based on the number of moles of solute per liter of solution, whereas percent concentration is based on the mass of the solute per 100 parts of the total solution.

Explain how three of the most common elements found in living things are important to the human body?

  1. Carbon is the backbone of organic molecules like carbohydrates, lipids, proteins, and nucleic acids in the human body, essential for energy production and structural support.

  2. Hydrogen is crucial for maintaining the pH balance in the body, forming water molecules that are essential for various biochemical reactions, and is a component of important compounds like DNA and proteins.

  3. Oxygen is necessary for cellular respiration, the process by which cells generate energy. It is also a component of water and plays a key role in various metabolic processes in the human body.