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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 is subtrate level phosphorylation?

Oxidation of G3P occurs by the removal of hydrogen atoms are picked up by NAD+, and NADH+H+ results. Later the NADH will pass on electrons to the electron transport chain. Oxidation of G3P and subsequent substrtes result in four high energy phosphate groups and these are used to synthesize four ATP. So basically substrate-level ATP synthesis is when an enzyme passes a high-energy phosphate to ADP and ATP results.

What are the effects of growth hormone deficiency?

Growth hormone deficiency can lead to growth retardation in children, delayed puberty, decreased muscle mass, increased body fat, low energy levels, and poor bone density. In adults, it can result in reduced muscle mass, increased fat accumulation, decreased bone density, fatigue, and a reduced quality of life. Treatment with growth hormone therapy can help alleviate these symptoms.

What are the causes of hereditary fructose intolerance?

Fructose intolerance is an inherited disorder passed on to children through their parents' genes. Both the mother and father have the gene that causes the condition, but may not have symptoms of fructose intolerance themselves.

What are Proteins C and S?

Proteins C and S are two regulatory proteins in the body that play a role in controlling blood clotting. Protein C helps to inhibit blood clot formation, while protein S enhances the anticoagulant effects of protein C. Deficiencies in these proteins can lead to a heightened risk of abnormal blood clot formation.

What body system produces diploid and haploid cell by meiosis in humans?

The reproductive system in humans produces diploid cells through meiosis in the process of spermatogenesis (in males) and oogenesis (in females). These diploid cells eventually give rise to haploid gametes (sperm and eggs) which are involved in sexual reproduction.

What is opened by a restriction enzyme?

A restriction enzyme opens up the double-stranded DNA molecule at specific recognition sites by cutting the DNA strands at those sites. This creates DNA fragments with sticky ends that can be used in molecular biology techniques like cloning and DNA sequencing.

Is there more than one neuron to detect a stimulus?

Yes, typically multiple neurons receive and transmit signals in response to a stimulus. This helps to amplify and process the incoming information before it is transmitted to the brain for further processing and interpretation.

What happens as electrons are passed along the ETC?

As electrons are passed along the electron transport chain (ETC), they release energy. This energy is used to pump protons across the inner mitochondrial membrane, creating a proton gradient. The flow of protons back across the membrane drives ATP synthase to produce ATP.

What is a fat that is usually solid at room temperature and is found in meat dairy products and egg yols?

Saturated fat is a type of fat that is usually solid at room temperature and is found in meat, dairy products, and egg yolks. Consuming saturated fats in excess can contribute to heart disease and other health issues.

How many monomers are added to the growing polypeptide or protein chain in each step?

During each step of protein synthesis, one amino acid monomer is added to the growing polypeptide chain by the ribosome. This process occurs in a cyclical manner as the ribosome moves along the mRNA strand, adding one amino acid at a time.

When the water level is higher inside than outside the flask is the gas pressure in the flask higher than lower than or the same as the atmospheric pressure?

When the water level is higher inside than outside the flask, the gas pressure in the flask is lower than the atmospheric pressure. This is because the weight of the column of water inside the flask creates an additional pressure on the gas inside, reducing its pressure relative to the atmospheric pressure outside.

Is 207 amino acids joined a protein?

Without knowing which amino acids you have, it is relatively difficult to say whether what you have assembled is a useful protein or just garbage, but any string of attached amino acids is defined as a polypeptide or protein.

What mineral activates an enzyme for the formation of acetylcholine?

Copper is the mineral that activates the enzyme choline acetyltransferase, which is involved in the formation of acetylcholine.

What is enzyme affinity?

Enzyme affinity refers to the strength of binding between an enzyme and its substrate. It determines how readily an enzyme can bind to its substrate and catalyze a reaction. Enzymes with high affinity have a strong binding interaction with their substrates, leading to efficient catalysis.

How is hereditary fructose intolerance diagnosed?

Urine tests can be used to detect fructose sugar in the urine. Blood tests can also be used to detect hyperbilirubinemia and high levels of liver enzymes in the blood. A liver biopsy may be performed to test for levels of enzymes.

What is a beta clamp?

First of all, in prokaryotes, the beta clamp is a dimer. A dimer is made from two [identical] monomers; in this case the monomers are [complexly folded] protein strands.

Secondly, these two dimers form two halves of a Ring - this Ring surrounds or encompasses the Dna strand, thereby forming a clamp that, while securely connected to the Dna strand, can easily move 'laterally' along the DNA strand.

All of the large enzymes that Act upon and Process Dna use the beta clamp as The-Go-Between point of attachment.

In eukaryotes, the biochemical moiety that performs the same function as the beta clamp is a trimer and is called PCNA - the Proliferating Cell Nuclear Antigen.

What is the process of copying DNA sequence to produce RNA?

The Role of RNA

1. ---------Sugar -------Number of Strands -----------Bases

DNA -Deoxyribose-- Double-Stranded--------- Thymine

RNA -Ribose-------- Single-Stranded----------- Uracil

2. a.Transfer RNA b. Messenger RNAc.Ribosomal RNA

3. Messenger RNA carries information from DNA to other parts of the cell.

RNA Synthesis

4. Transcription

5. Transcribed

6. Cell's Nucleus , Cytoplasm

7. RNA Polymerase

8. Promoters

9. Introns

10. Exons

13.2 Ribosomes and Proteins Synthesis

The Genetic Code

1. Amino Acid

2.

3.Lysine

4.GGU

5.Gycine

6.ACG

7.GCG , UCG , CCG

8.CUG

9.GAC

10.

11.Transcription is synthesis RNA molecule from DNA template then translation is the sequence of base of an mRNA is converted into the sequence of amino acids of a protein.

12.

Step Description

Beginning of Translation- Ribosome attaches to an mRNA in the cytoplasm.

tRNA brings the proper amino acids in to the

ribosomes. Ribosome attaches the amino acids to

growing chain.

Assembly of Polypeptide- Bond holding the first tRNA molecule to its amino

acids is broken. The tRNA then moves on to a third

binding site from which it exits the ribosome.

Ribosome then moves to the 3 condon.

Competing the polypeptide- Ribosomes stop condon, it release both the newly

formed polypeptide and the mRNA molecule.

13.Help hold ribosomal proteins in place and locate the beginning of the mRNA message.

14.A.

15.D.

16. B.

17.B.

18.D.

19.

When two allele pairs are identical it is considered to be?

Homozygous is the term used to describe an organism with two allele pairs that are identical, in reference to dominant characteristic traitÊin heredity.

What are ''thermolabile enzymes''?

Thermolabile enzymes are enzymes that are sensitive to heat and can be denatured or destroyed at high temperatures. These enzymes have optimal activity at lower temperatures and are typically found in organisms living in moderate environments. Heating can disrupt the structure of thermolabile enzymes, rendering them nonfunctional.

Where in the mitochondrion does the electron transport chain?

The electron transport chain takes place in the inner mitochondrial membrane. This is where the series of protein complexes and molecules work together to generate ATP through electron transfer and proton pumping.

What is the difference between acetyl CoA and coenzyme A?

Coenzymes are small, organic, non-protein molecules, such as vitamins, that carry chemical groups between enzymes. They are sometimes known as cosubstrates. Coenzymes are substrates for enzymes but are not considered part of an enzyme's structure. Cofactors are non-protein chemical compounds that are bound (either tightly, as in prosthetic groups; or loosely, as in coenzymes) to an enzyme and is required for catalysis. A cofactor can be a coenzyme or a prosthetic group.

How does having the same mother and different fathers make you a whole sibling verses have the same father and different mother Doesn't the dna of the father determine that?

I believe that if you have the same dad then you are not half bro/sis. I believe that it is the dna of the father that determines biological siblings. I have five children with my husband and three of them have different mothers and I tell them all the time that they are NOT step anything or half anything because they all have the same dad. That's my story and I am sticking to it unless the world of medicine proves me wrong:)

What color coded test tubes are used in centrifuge?

Different laboratories may use different color codes for test tubes depending on their specific protocols. However, a common color coding for test tubes used in centrifuges is as follows: red for serum tubes, lavender for EDTA tubes, green for heparin tubes, and blue for citrate tubes.

What happens to the enzymes after the substrate reacts?

It is either used again (many enzymes are used multiple times before broken down) or is broken down.