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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

Do enzymes recycle after a reaction occurs?

Yes, enzymes are not consumed or altered during a reaction, so they can be used repeatedly to catalyze multiple reactions. After a reaction occurs, enzymes remain unchanged and available to catalyze additional reactions.

The electron transport process makes water and ATP and is sometimes called?

Two different processes here.

Oxidative

phosphorylation.

This is where highly electronegative

oxygen pulls electrons from the ETC

, put them together with hydrogen ions and makes water.

Chemiosmosis. Where the hydrogen ions that were pumped into the outer membrane of the mitochondria fall back down their concentration gradient through the ATP synthase and make ATP.

Is Myosin a homopolymer or a heteropolymer?

Myosin is a heteropolymer because it consists of multiple subunits with different amino acid sequences that come together to form the final protein structure. The assembly of these subunits results in the functional myosin protein.

Do nucleotides form polymers?

Yes, nucleotides form polymers called nucleic acids. Nucleic acids are long chains of nucleotides that are essential in storing and transmitting genetic information. DNA and RNA are examples of nucleic acids formed by nucleotide polymers.

What is the example of electron transport chain?

An example of an electron transport chain is in cellular respiration, where it occurs in the inner mitochondrial membrane. During this process, electrons are passed along a series of protein complexes and molecules to generate ATP, the cell's main energy source. This electron transport chain is crucial for producing energy through the oxidation of nutrients.

How many nitrogenous bases are found in a anticodon?

3. The opposite three that are located on the codon of an mRNA strand.

eg.

If mRNA reads CAG UCG AGU Three codons
Then tRNA GUC AGC UCA Three Antiocodons each containing three nitrogenous bases.

What is the hormone that signals the release of glucose out of storage?

The hormone that signals the release of glucose from storage is glucagon. Glucagon is produced by the alpha cells of the pancreas and works to increase blood glucose levels when they are low, such as during fasting or between meals.

What three elements are found in macromolecules?

The three elements found in macromolecules are carbon, hydrogen, and oxygen. These elements are essential building blocks for a wide variety of biological macromolecules including carbohydrates, lipids, proteins, and nucleic acids.

What are the two molecular groups of photosynthesis?

The two molecular groups involved in photosynthesis are chlorophyll and carotenoids. Chlorophyll is responsible for capturing light energy and initiating the light-dependent reactions, while carotenoids help protect the plant from damage by dissipating excess light energy.

When will your blood reach the required therapeutic level of lithium?

  • HERE'S THE SHORT ANSWER:
The healthy range (what the doctor is looking for), for lithium is: 0.6 - 1.2 mmol/L.

[The measurement mmol/L means millimoles/liter.

What percentage of the brain does a genius use?

The notion that we only use some fraction of our brain is based on an oversimplification of an outdated understanding of how the brain actually works (in other words, it's wrong). It may be true that at any given time only a small fraction of your neurons are firing, but that's more because you don't often have a need for the neurons that govern, say, remembering exactly what benzaldehyde smells like (cherries, if you're interested).

There's no reason to think that geniuses use a "higher percentage" of their brains than anyone else.... they just do it better, somehow, and we really don't understand exactly how.

There is no secret, chemical or morphological, behind a genius using his brain more effectively and successfully than many others. He simply keeps his neurons free of other electrical and chemical impulses, impurities, disturbances, disruptions, cross-currents and short-circuits such as those caused by sudden or continuing erruptions of anger, hate, lust and so on. The ancient Indian philosophers have defined this state of the resultant chemical and electrical special balance as Cleanliness Of Conscience or Kundtalini. Where many people are prone to diverge in their thoughts, emotions and feelings, they are clear-conscious enough to make them converge, thereby reducing the need for using more neurons. Anyway complex thoughts result in the formation of more chemical combinations and more intense and intricate electrical discharges. The projecting of the fore head frontwards in the cource of evolution increased the internal volume of the skull by which more quantity of brain could it contain, which has been critical in the emergence of intellect in man. The erection of the backbone unlike in animals also has been a critical factor. When the backbone remained horizontal to the axis of the Earth, all the excess energy produced was being arrested and pulled down to earth by the gravitational force. But once it became erect, it was freed from the magnetic pull of the earth and all excess and unused energy went straight to the brain and it developed. It is not strange that a sitting sleeper is more conscious and alert than a lying sleeper. When compared to animals, all men are geniuses once they get rid of all rubbish in their brain and do not overcrowd it.

How many subunits are in the ribosome?

The ribosome is composed of two subunits, a large subunit and a small subunit. These subunits work together to carry out protein synthesis in the cell by reading the messenger RNA and assembling amino acids into a protein chain.

What is 1 ATM at 0 degrees Celsius?

water boils at zero degrees then atmospheric pressure will be...........

What is one of a pair of chromosomes that are involved in sex determination of an idividual?

One of the pair of chromosomes involved in sex determination is the Y chromosome. In individuals with a Y chromosome, they typically develop as males, while those without a Y chromosome develop as females.

Does freezing honey kill enzymes?

Freezing honey can slow down the activity of enzymes, but it doesn't completely kill them. Enzymes may become less active while frozen, but they can become active again once the honey returns to room temperature.

How long does it take for hormones to return to normal after giving birth?

Forever! After my first, almost 10 months. After my second, who is 2, I still don't feel 100%. I feel like I am almost there though. I'm sure everyone is different- I just want to get back to my baseline naturally and not ad a medication to the mix if nature will eventually take it's course. I'm just easily agitated monthly more so than before! Not that big of a deal, but it's consuming sometimes.

Which hormone would be particularly active in times of food shortage?

Ghrelin is a hormone that increases appetite and promotes the feeling of hunger. It is particularly active in times of food shortage to signal the body to seek out food for energy and sustenance.

What do plants roots soak up for photosynthesis?

Plants roots absorb water and minerals from the soil to support photosynthesis. Water is crucial for transporting nutrients throughout the plant, while minerals like nitrogen, phosphorus, and potassium are essential for various cellular functions that contribute to the process of photosynthesis.

What molecules is are lost when a triglyceride is formed?

Three molecules of water are lost when a triglyceride is formed. Each water molecule is released during the condensation reaction between a glycerol molecule and three fatty acid molecules to form a triglyceride.

Where are the proteins of electron transport chains located?

The proteins of electron transport chains are located in the inner mitochondrial membrane in eukaryotic cells and in the plasma membrane in prokaryotic cells. They play a critical role in generating ATP through the process of oxidative phosphorylation.

What are the final products of catabolic reactions?

The final products of catabolic reactions are typically smaller molecules, such as glucose, fatty acids, and amino acids, that can be used by the cell for energy production or building blocks for various cellular processes. In aerobic conditions, the final products can be carbon dioxide, water, and ATP.

What does it means that a molecule is activated?

When a molecule is activated, it means that its chemical structure has been altered in a way that makes it more reactive or capable of participating in a chemical reaction. This activation can be achieved through various methods such as adding energy, changing its environment, or adding specific chemical groups.

WHYNh3 is stong bond?

NH3 is a strong bond because it is capable of hydrogen bonding. when it comes to intermolecular forces (dispersion, dipole-dipole, hydrogen bonding, and ion-dipole) hydrogen bonding is one of the strongest. Molecules containing Hydrogen atoms bonded with Flourine(ex-FH), Oxygen(ex-H2O), or Nitrogen(ex-NH3) are capable of hydrogen bonding because they are extremely polar. Even though the Nitrogen and Hydrogen atoms "share" atoms through covalent bonds, the electrons tend to hover closer to Nitrogen. This results in the Hydrogen atoms becoming partially positive in charge while the Nitrogen atom gains a partially negative charge. When a molecule of NH3 comes in contact with another molecule of NH3, the positive (Hydrogen) end of one molecule attracts the negative (Nitrogen) end of the other. This ability of the partially positive Hydrogen atoms to form strong bonds with other polar molecules (IE. Hydrogen Bonding) is why NH3 forms strong bonds.

What is the liquid inside the chloroplast?

The liquid inside the chloroplast is called stroma. It contains enzymes, ribosomes, DNA, and other molecules necessary for photosynthesis to occur.

Why do enzyme molecules change shape at high temperatures?

The rate of enzyme reactions is affected by temperature. All enzymes have an optimum temperature range in which they work most efficiently. An enzyme is most active at its optimum temperature. A temperature rise beyond this point reduces enzyme activity till it completely stops. This happens because the enzymes structure has changed, (often a loss of the correct folding of the molecule) and it's irreversiable. The change of the structe makes the enzyme become useless because it can't bind to subrates to make chemical reactions.