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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 happens to DNA during sexual reproduction?
During sexual reproduction, DNA from two parents combines to create a unique offspring with a mix of genetic traits. This process involves the formation of gametes (sperm and egg) through meiosis, where genetic material is shuffled and recombined to generate diversity in the offspring's DNA. Fusion of the gametes during fertilization then combines the DNA from both parents to form a new individual with a unique genetic composition.
What are two ways in rna differs from DNA?
One difference is due to their nitrogen bases. RNA's bases are adenine (A), uracil (U), guanine (G), and cytosine (C). DNA's bases are adenine (A), thymine (T), guanine (G), and cytosine (C). Another difference is that DNA is a double-stranded molecule with a long chain of nucleotides, while RNA is a single-stranded molecule with a shorter chain of nucleotides.
Lysine, 2,6-diaminohexanoic acid is amfoteric, meaning it has BOTH 2 basic amino-groups (stronger) and 1 acidic carbonic acid group (-COOH). The acidic group is weaker than both basic properties, so overall it is basic.
What are three physical properties used to identify compound?
Three physical properties used to identify compounds are melting point, boiling point, and density. These properties can be compared to known values of compounds to determine the identity of an unknown compound.
What process begins with a start codon and ends with a stop codon?
The Start Codon Signifies the exact point where The Dna Nucleotide Lineage becomes Meaningful.
The Start Codon is signified by the f-Met codon: the first amino-acid in each and every Protein ever bio-constructed throughout the Aeons was signified by f-Met.
The Stop Codon leads to some Ambiguity; only because the cessation of Protein Synthesis is accomplished, controlled, and effected through several means; the Stop Codon is just One Type [or example] of this.
By the by; the difference between Met and f-Met is that while they both code for the same amino-acid - Methionine : ONLY F-MET is meant to occur at the Head End of A Protein Chain.
Dissolve it to 100mM in DMSO, aliquot and store at -80℃. Upon use, take out one aliquot and dilute it to 1mM in absolute ethanol, and supplement the culture medium accordingly. Store this working stock under -20℃ for up to 2 weeks.
What is present in the body as coenzyme FAD and FMN and is a component of amino acid oxidase?
Riboflavin, also known as vitamin B2, is present in the body as coenzyme FAD and FMN. It is a component of various enzymes including amino acid oxidase, which is involved in the metabolism of amino acids.
The nervous system controls and coordinates functions throughout the body. It includes the brain, spinal cord, and network of nerves that communicate with all parts of the body, helping to respond to internal and external changes.
Which hormone causes luteolysis?
Prostaglandin F2alpha is the hormone responsible for triggering luteolysis, the regression of the corpus luteum in the ovary. This process leads to the cessation of progesterone production in non-pregnant animals.
enzymes are made up of protein. amino acids are a type of protein, but if ever asked
a question on what they are made up of, the simple answer of :protein, will be
appropriate. enzymes are what speed up the chemical reactions in our body, if we
did not have enzymes the chemical reactions would take a lot longer to take place
and could effect our body functions as the chemical reactions are not happening as
they are suppose to.
What is true of all saturated fatty acids?
Saturated fatty acids have no double bonds between carbon atoms in their hydrocarbon chain, making them straight and fully saturated with hydrogen atoms. They are generally solid at room temperature and are found in animal fats and some plant oils. Consuming excessive amounts of saturated fatty acids has been associated with increased risk of heart disease.
What hormone works opposite to epinephrine?
Insulin works opposite to epinephrine. Insulin acts to lower blood sugar levels by promoting the uptake of glucose into cells, while epinephrine increases blood sugar levels by stimulating the release of glucose into the bloodstream.
What vitamin is required for the synthesis of rhodopsin?
Vitamin A is required for the synthesis of rhodopsin, a light-sensitive pigment found in the rods of the retina. Rhodopsin is crucial for low-light vision and helps our eyes adjust to changes in light levels. A deficiency in vitamin A can lead to vision problems, particularly night blindness.
This process is known as endocytosis, specifically phagocytosis if the solid substance being engulfed is a large particle or bacterium. Endocytosis involves the cell membrane wrapping around the substance to form a vesicle that is then internalized into the cell.
What is the name of the enzyme that activates another enzyme?
The enzyme that activates another enzyme is called a kinase. Kinases add phosphate groups to proteins, a process known as phosphorylation, which can activate or deactivate the target enzyme.
What is a cellulosic feedstock?
"Cellulosic" means that the material contains cellulose. Cellulose is found in wood, paper, grass and other plant matter. If it is used as a starting point for producing something, such as ethanol, that would make it a feedstock.
What is the major hormone that promotes lactation?
The major hormone that promotes lactation is prolactin. It is released from the anterior pituitary gland and plays a key role in milk production and maintenance of milk supply during breastfeeding.
Is saying adverse affects the same as saying side affects?
No. Adverse effects are effects that cause something undesirable to happen, while side effectsare simply results other than that which you were trying to produce. If I poured water on you, the adverse effect would be that you got wet (which you don't like) and the side effect would be that the ground got wet, which I didn't intend, but happened because of what I did.
Adherens junctions act as anchors in cellular sheets, distributing tension and reducing the chance of tearing when subjected to mechanical stress. These junctions are composed of cadherin proteins that link adjacent cells and interact with the actin cytoskeleton to maintain tissue integrity.
Is a virus bigger than a prokaryote?
Viruses are typically composed of RNA surrounded by a capsid (protein shell). This would mean by definition that the virus molecule, which is technically considered nonliving, is larger than a protein strand (because the capsid is made of protein).
Are soaps amphipathic molecules?
Yes, soaps are amphipathic molecules. They have both a hydrophilic (water-attracting) and a hydrophobic (water-repelling) end. This allows them to interact with both water and oil, making them effective in removing grease and dirt during cleaning.
What type of protein controls what goes in and out of cells?
Integral Membrane Proteins control the movement of substances into and out of the Cell (that cannot pass directly through the bi-lipid layer).
These are proteins that span the width of the membrane [40 nanometers], and can be channels, pumps, gates of many descriptions, co-transporters, etc.
As proteins go, these trans-membrane proteins have internal and external hydrophyllic lengths that have immensely important and varied bio-functions, and the trans-membrane segment is of course hydrophobic.
What proteins in mammals show only primary and secondary structures?
Most proteins in mammals have tertiary and quaternary structures in addition to primary and secondary structures. However, some small proteins or peptides, such as certain antimicrobial peptides, may exist in nature with only primary and secondary structures, lacking the more complex tertiary and quaternary arrangements.
What are the three main functions of proteins in living things?
Proteins serve as enzymes to catalyze biochemical reactions, provide structural support by forming tissues like muscles and skin, and act as antibodies to defend against foreign invaders like bacteria and viruses.
