When there are two or more reactants, the active site provides a template on which the substrates can come together in the proper orientation for a reaction to occur between them 2.as the active site of an enzyme clutches the bound substrates, the enzyme may stretch the substrate molecules toward their transition state form, stressing and bending critical chemical bonds to be broken during the reaction. because ea is proportional to the difficulty of breaking the bonds, distorting the substrate helps it approach the transition state and reduces the amount of free energy that must be absorbed to achieve that state. 3.the active site may also provide a microenvironment that is more conducive to a particular type of reaction than the solution itself would be without the enzyme. ex: if the active site has amino acids with acidic r-groups, the active site may be a pocket of low ph in an otherwise neutral cell. in such cases, an acidic amino acids may facilitate h+ transfer to the substrate as a key step in catalyzing the reaction. 4. amino acids in the active site directly participate in the chemical reaction. sometimes this process even involves brief covalent bonding between the substrate and the side chain of an amino acid in an enzyme. subsequent steps of the reaction restore the side chains to their original states so that the active site is the same after the reaction was before?
what is the approximate range of frequencies that humans can hear?
20to 20,000hz
0to 20hz
0 to2hz
0to 2,000hz
Final answer:
Humans can hear frequencies ranging from 20 Hz to 20,000 Hz, with sounds below and above this range being classified as infrasound and ultrasound, respectively.
Explanation:
The approximate range of frequencies that humans can hear is from 20 Hz to 20,000 Hz. This range defines what is audible to the human ear; sounds with frequencies below 20 Hz are classified as infrasound, while those above 20,000 Hz are considered ultrasound. It's interesting to note that different species have varying ranges of hearing. For example, dogs can hear up to about 45,000 Hz, and bats and dolphins can detect frequencies as high as 110,000 Hz. In contrast, frequencies such as those produced by dog whistles are inaudible to humans but can be heard by dogs.
What is 90% of the biological stuff in soil?
The correct answer is that 90% of the biological stuff in soil is humus.
Humus is the dark, organic material in soils, formed by the decomposition of leaves and other plant material by soil microorganisms. It is a complex and stable mixture of carbon compounds that can persist in the soil for hundreds of years. Humus plays a crucial role in soil fertility and structure, improving the soil's ability to retain water and nutrients, and providing a habitat for beneficial microorganisms. It is estimated that humus can constitute up to 90% of the organic matter in soil, which is why it is often referred to as the ""lifeblood"" of fertile soil. The other options mentioned, such as bacteria, fungi, and protozoa, are also important components of soil life but do not make up the majority of the biological material in soil to the extent that humus does.
what would most likely happen to the carbon cycle if there were no more plants I earth
Explain why an increase in the thyroid hormone generally leads to decrease in thyroid-stimulating hormone
Final answer:
An increase in thyroid hormone leads to a decrease in thyroid-stimulating hormone due to a negative feedback loop, where high levels of thyroid hormones inhibit the production of TSH to maintain balance.
Explanation:
An increase in thyroid hormone generally leads to a decrease in thyroid-stimulating hormone (TSH) due to a regulatory process known as negative feedback. The hypothalamus secretes thyrotropin-releasing hormone (TRH), which stimulates the pituitary gland to produce TSH. TSH then stimulates the thyroid gland to produce and secrete thyroid hormones. As the levels of thyroid hormones (T3 and T4) in the blood increase, they provide feedback to the hypothalamus and pituitary gland to inhibit the secretion of TRH and TSH. This mechanism ensures that the production of thyroid hormones is kept within a healthy range, preventing both deficiency and excess.
This negative feedback loop effectively reduces the secretion of TSH when thyroid hormone levels are sufficiently high, and vice versa, increases TSH production when thyroid hormone levels are low. Therefore, a rise in thyroid hormone levels naturally leads to a suppression of TSH secretion to maintain hormonal balance.
The fusiform face area (ffa) in the brain is often damaged in patients with
The fusiform face area (ffa) in the brain is often damaged in patients with prosopagnosia also referred to as face blindness.
What is prosopagnosia?Prosopagnosia also referred to as face blindness, is actually a cognitive disorder of face perception where the ability to recognize familiar faces, including one's own face degrades.
It is often recognized as the fusiform face area (ffa) in the brain is often damaged in patients.
Thus, the answer is Prosopagnosia.
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The tiles below depict translation events during roughly two cycles of elongation. each cycle adds a leucine (leu) amino acid to the polypeptide. arrange the steps into their correct sequence. place the first step at the far left. do not overlap any tiles.
The sequence is: tRNA binds mRNA, peptide bond forms, ribosome translocates.
Initiation: The process begins with the small ribosomal subunit binding to the mRNA at the start codon (AUG), marking the initiation of translation. The initiator tRNA, carrying methionine (Met), also binds to the start codon.
Peptide bond formation (Cycle 1): The ribosome moves along the mRNA, and a tRNA carrying leucine (Leu) binds to the mRNA codon complementary to it.
A peptide bond forms between the methionine and leucine, connecting the two amino acids.
Translocation (Cycle 1): The ribosome advances along the mRNA by one codon, moving the tRNAs to the next binding sites: the P site (peptidyl site) and the A site (aminoacyl site).
The spent tRNA exits the ribosome from the E site (exit site).
Peptide bond formation (Cycle 2): Another tRNA carrying leucine (Leu) binds to the mRNA codon at the A site.
A peptide bond forms between the existing leucine and the newly arrived leucine.
Translocation (Cycle 2): The ribosome moves one codon forward again, shifting the tRNAs to the appropriate sites.
The tRNA that was in the P site moves to the E site and exits the ribosome, while the tRNA with the dipeptide moves to the P site.
This sequence repeats for each cycle of elongation, adding leucine amino acids and extending the polypeptide chain.
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wind erosion can be reduced by ___.
panting trees
removing dead leaves
reducing irritation
destroying windbreaks
Answer is - planting trees!
Answer:
Planting trees
Explanation:
Wind erosion is a kind of erosion that removes the nutient-containing topsoil by the power of the wind. Wind erosion leads to the loss of nutrients from the topsoil, hence, resulting in an infertile soil for plants' growth.
Planting of trees, also known as afforestation, is one way to prevent the negative impact of wind erosion on the soil as plants helps to hold the less compact soil in place using their root systems. The shoot part of the plants involving the leaves and stem also helps to reduce the effect of the wind force. Trees are used as wind breaks for areas that are highly affected by wind.
why is an active site important
Identify the other key structures that indicate the probable origin of a chloroplast
After applying a tourniquet, the injury from a patient's leg stops bleeding. this is called:
The process of having to apply a tourniquet in a person’s leg due to injury and with continuous bleeding in order to stop it is called hemostasis. This process, the hemostasis, is a process of having to stop the flow of blood which is important in scenarios like this, in order for the patient to prevent of having to lose more blood.
The stopping of bleeding through applying a tourniquet is known as achieving hemostasis. It's a crucial process in the body's response to injury, but a tourniquet should be used with caution.
Explanation:When the application of a tourniquet stops the bleeding from a patient's injury, this is generally known as achieving hemostasis. Hemostasis is the process of your body stopping the bleeding or hemorrhage. In medical field, a tourniquet is often used as a last resort when other methods of controlling bleeding, such as direct pressure, have failed. Please bear in mind that a tourniquet should be used with caution because prolonged application can cause damage to nerve and other tissues beneath it.
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The glycocalyx is often referred to as the "cell coat," which is somewhat fuzzy and sticky with numerous cholesterol chains sticking out from the surface of the cell membrane.
Phosphorus is atmotic number 15 When it comes to bonding with other atoms, what is phosphorus most likely to do?
Instead of having roots and leaves, molds grow as thread-like filaments called _____.
"prokaryotic cells are found in the domain(s) _____."
Prokaryotic cells are found in the domain(s) of bacteria and archaea.
What are prokaryotic cells?Prokaryotic cells lack organelles, have no nucleus, and are significantly smaller than eukaryotic cells.
A cell wall protects every prokaryotic cell. Many additionally include a polysaccharide-based capsule or slime layer.
Single-celled organisms known as prokaryotes are found in the Bacteria and Archaea domains.
Bacteria and other single-celled creatures have prokaryotic cells. Prokaryotes are defined as organisms possessing prokaryotic cells. They were the first kind of organisms to evolve and continue to be the most prevalent ones.
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What is the difference between a hacktivist and a cyberterrorist?
Hacktivists and cyberterrorists both engage in hacking and cyber activities, but their motivations and actions are different. Hacktivists promote political or social causes through hacking, while cyberterrorists aim to cause harm and fear for political or ideological reasons.
Explanation:Hacktivists and cyberterrorists are both related to hacking and cyber activities, but their motives and actions differ. Hacktivists are individuals or groups who use hacking techniques to promote a political or social cause. They may deface websites, leak sensitive information, or disrupt online services to raise awareness or advocate for change. On the other hand, cyberterrorists are individuals or groups who use hacking techniques to cause harm and create fear for political or ideological reasons. Their actions aim to intimidate, disrupt critical infrastructure, or compromise national security.
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The work of eduard buchner and the discovery of enzymes laid the foundations for the field of
Eduard Buchner's and James Sumner's groundbreaking work with enzymes led to the establishment and rapid growth of the field of biochemistry, paving the way for numerous scientific breakthroughs in molecular biology, genetics, and medicine.
The work of Eduard Buchner and the discovery of enzymes laid the foundations for the field of biochemistry. Buchner's pioneering work showed that fermentation could occur outside living cells, which led to the realization that enzymes, the proteins acting as catalysts for biochemical reactions, could function independently in a living organism. In 1926, James Sumner's crystallization of urease marked the first time an enzyme was isolated, providing direct evidence that enzymes were indeed proteins. This discovery was initially met with skepticism but eventually led to Sumner receiving the Nobel Prize in Chemistry in 1946.
The enormous strides in biochemistry following these findings include the identification of thousands of enzymes and their substrates, tracing hundreds of metabolic pathways, and determining the structure of a myriad of proteins. Most notably, after the structure of DNA was elucidated in 1953, an explosion of knowledge concerning genetics and molecular biology ensued, including advancements like cloned animals, gene therapy, and enzyme immobilization for treating metabolic disorders. Biochemistry now intersects with fields such as medicine, informing the development of pharmaceutical drugs and providing diagnostic tools for diseases.
Explain how the water inside a cell helps to keep the cell’s temperature constant.
The conversion of amino acids to carbohydrates is an example of
Neurons that carry messages from the spinal cord or the brain to the muscles and glands are called ________ neurons.
Motor neurons transmit impulses to skeletal muscle and smooth muscle from the spinal cord.
What are motor neurons?Motor neurons are part of the central nervous system(CNS), it connects the spinal cord to the glands, smooth muscles, and skeletal muscle and transmits signals.
These are the special type of brain cells, that come into two types upper and lower motor neurons. lower motor neuron connects by upper motor neuron which originates from the brain.
The major function of these neurons is to send commands for movement of smooth muscles to help to do functions like speaking, breathing, swallowing, move.
sensory neurons carry impulses from sensory organs to the central nervous system, which differs from the motor neuron.
Therefore motor neurons carry signals from the brain and spinal cord to the muscles
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Tascha is on a medication that increases the pH of the stomach and makes it alkaline. What is the effect of this medication?
These medicines are called antisecretory because they work by blocking the acid secretion of the stomach.
This is the case of the H2 antihistamine (such as Cimetidine) which has a rapid action (approximately 1 hour) but longer than an antacid.
When symptoms are frequent, occurring more than once a week, proton pump inhibitors (PPIs) (such as Omeprazole), antisecretory agents of potent and prolonged action (at least 24 hours), constitute the treatment of choice.
Explanation:
A medication that increases the pH of the stomach and makes it alkaline is actually helping in neutralizing the acid forming in the stomach.
When there is excess of acid into the stomach then intake of a base helps in balancing the excess of acid by providing suitable amount of hydroxide ions.
Thus, we can conclude that this medication will have a neutralizing effect.
A scientific theory is an untested hypothesis. True or false
Describe the three abiotic physical systems
Phosphorus is atomic number 15 when it comes to bonding with other Adams what is phosphorus most likely to do
what produces 2 atp molecules and pyruvic acid?
List of all the subatomic particles their location and charge
The hormone released by the pineal gland that reduces body temperature and prepares you for sleep is
what zone is most likely to be home to algae?
Explain the two major processes that drive the normal functioning of the carbon cycle
According to evolutionary theory, biologically based drives for every species are: