which of the following statements is not true concerning peptidyl transferase? group of answer choices it catalyzes peptide bond formation. it requires no outside source of additional energy, such as atp. it is a ribozyme having catalytic activity. it is associated with the large subunit of ribosomes. it moves the ribosome, so translation continues.

Answer:

top soil

Explanation:

Answer:

Top soil

Explanation:

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PLEASE GIVE ME BRAINLIEST

Answer:

The correct answer is - a) chloroplast 2) sunlight 3) products

Explanation:

Photosynthesis is the process that includes a set o chemical reaction that takes place inside the green plants and other photosynthetic organisms. These green plants or photosynthetic organisms have a special cell organelle known as chloroplast present in plant cells only that has a pigment called chlorophyll that is essential for photosynthesis.

Photosynthesis is a complex process but it can be understood as the reactants of this process that are sunlight, water, and carbon dioxide produces glucose and oxygen.

Photosynthesis, which makes use of carbon dioxide and water, generates oxygen and glucose.

As the raw ingredients for photosynthesis—water and carbon dioxide—enter the cells, the products of photosynthesis—sugar and oxygen—leave the leaf. Water reaches the root and ascends to the leaves through specialized plant cells called xylem vessels.

Cellular respiration uses glucose and oxygen as input ingredients and produces ATP, carbon dioxide, and water as waste products. Many processes, some requiring oxygen and some not, take place in the body once glucose from food is ingested in order to produce energy.

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This difference will continue as long as the axon is at rest. Generally, the resting potential in neurons is −70 mV.

The resting potential is the electrical potential of a neuron when it is involved in the passage of a given stimulus.

This value (resting potential) depends on ion concentration on both sides of the plasma membrane.

The resing potential may change due to the presence of specific proteins called carriers that transport ions to both sides of the plasma membrane.

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Answer:

They are made of gases.

They contain iron in their cores.

They make energy through fusion.

Explanation:

Answer:

(A) They are made of gases.

(C) They have a spherical shape.

(E)They make energy through fusion.

Explanation:

i took the test edg2020

In the common cold we can say that there is a localized inflammatory response as is focused on the airways, rarely gets to the bronchi or lungs, this happens when there are complications, even more, when complications occur, these are contained in the respiratory system.

Answer:

Explanation:

Oxygen is needed to support life and some metabolic processes in microorganisms especially aerobic organism.

The presence of oxygen in the container gives them the opportunity to carry out there metabolic activities thereby enhancing there growth and multiplication.

Hence, to limit the growth of aerobic bacteria or fungi, and also to prevent the evaporation of volatile components that is available in the content oxygen is withdrawn this help extend the shelf life of the produce to be stored.

Increased sebum secretion can fuel the overgrowth of the opportunistic pathogen Propionibacterium acnes in its normal habitat, leading to disease.

Propionibacterium acnes is a bacterium commonly found on human skin, particularly in sebaceous areas such as the face, chest, and back. It is considered an opportunistic pathogen, meaning it normally resides on the skin without causing harm but can lead to disease under certain conditions.Sebum is an oily substance produced by the sebaceous glands in the skin. It helps lubricate and protect the skin. However, excessive sebum production, often due to hormonal changes, can create an environment conducive to the growth of Propionibacterium acnes.

When there is an excess of sebum, it can accumulate in hair follicles and pores, providing a nutrient-rich environment for Propionibacterium acnes to thrive. The bacterium feeds on the sebum and breaks it down into fatty acids, which can trigger an inflammatory response in the surrounding tissues.

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Amino acids are seen in proteins as nucleotides are needed to create DNA.

Amino acids refers to organic compounds which are the building blocks of proteins with a central carbon atom known as the alpha carbon connected to an amino group (-NH2), a carboxyl group (-COOH), a Hydrogen (-H) group and a side chain (-R group) which can be alkyl or aryl depending on the specificity of the amino acids. A protein is formed by a linear chain of amino acids. This implies that they are combined in a certain order to form a linear chain called a polypeptide, which folds into a three-dimensional protein structure. Glycine, alanine, valine, leucine, isoleucine, proline, phenylalanine, tyrosine, tryptophan, methionine, cysteine, serine, threonine, asparagine, glutamine, aspartic acid, and glutamic acid are the 20 most common amino acids (EAA) found in proteins. Out of these 20 amino acids, 9 are essential amino acids (EAA), while the other 11 are non-essential amino acids (NEAA).

On the other hand, nucleotides are the building blocks of DNA. DNA is formed by a chain of nucleotides. Deoxyribonucleic Acid (DNA) is a long molecule that carries the genetic information required for the development, function, and reproduction of all living organisms, from bacteria to plants to animals. DNA is formed by two polynucleotide chains wrapped around each other in a double helix, with nucleotide subunits as the building blocks. Nucleotides are linked together by phosphodiester bonds to form a double helix structure of DNA. DNA molecules contain genetic information or instructions that determines the characteristics of living organisms for their development and functioning, and these instructions are written in the genetic code.

Amino acids are conjoined together by peptide bonds in a specific order and sequence to form a protein. DNA provides the genetic information needed to make proteins. Proteins are incorporated in various cellular functions as the likes of metabolism, structure, and signaling.

Therefore, amino acids are seen in proteins as nucleotides are needed to create DNA.

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Answer:

Most put it down to the hypnotic effect of watching fish swim back and forth in their tank; it's an innately calming movement, and one that can help to relax the mind and ease muscle tension.

Explanation:

Read it online

Answer: Most put it down to the hypnotic effect of watching fish swim back and forth in their tank; it's an innately calming movement, and one that can help to relax the mind and ease muscle tension.

Explanation:

Receptors are protein particles that might be transmembrane or cytosolic and cooperate with the extracellular ligands to prompt a flagging fountain and gets utilitarian changes the cell.

There are four main classifications for receptors: intracellular steroid, G-protein-coupled, ligand-gated ion channels, and tyrosine kinase-coupled ion channels

There are three main types of cell-surface receptors: GPCRs, enzyme-linked receptors, and ion channel receptors.

When a signaling molecule binds, gated ion channels open a pore in the plasma membrane. Ions can then flow into or out of the cell thanks to the open pore. Receptors that are linked to ion channels bind a ligand and create a channel in the membrane that lets specific ions pass through.

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Answer:

1) Messenger RNA molecules contain ribose, and transfer RNA molecules contain deoxyribose.

2) Messenger RNA molecules function in carrying coded information to the ribosomes, and transfer RNA molecules function in carrying amino acids to the ribosomes.

The major difference between messenger RNA molecules and transfer RNA molecules is that messenger RNA carries the genetic information, while tRNA carries the amino acids.

RNA is ribonucleic acid. In the cell, different types of RNA are found, such as mRNA (messenger RNA), tRNA (transfer RNA), rRNA (ribosome RNA), SnRNA, miRNA, etc. mRNA, or messenger RNA, is formed from DNA. It carries the information of a cell. The three consecutive nucleotides of mRNA make up a codon. An example of a codon is AUG.

tRNA has a cloverleaf-like structure. It has different domains such as the TΨC loop, the DHU loop, the anticodon region, and at the 3' end it is attached to an amino acid. The anticodon of the tRNA reads the codon sequence of the mRNA and attaches the amino acids. For the AUG codon methionine is attached.

Hence, the main difference between the messenger RNA and transfer RNA molecules is that mRNA carries the message of the genetic material, while tRNA carries amino acids to express the genetic material on mRNA.

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It is true that a Codon is a trio of nucleotides that can designate many amino acids. Four nucleotides make up the language of DNA and RNA molecules, while 20 amino acids make up the language of protein molecules.

This proved that the coding unit is made up of three nucleotides. A codon is a triplet of nucleotides that codes for an amino acid. One amino acid is encoded by each set of three nucleotides.

Even within a single gene, a codon can spontaneously evolve to code for two different amino acids, with the choice of the inserted amino acid being determined by an RNA structure in the 3′-untranslated region.

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In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from the stroma to the thylakoid space.

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Answer:

hello there

Explanation:

secondary structure

The secondary structure consists of local packing of polypeptide chain into α-helices and β-sheets due to hydrogen bonds between peptide bond – central carbon backbone. Tertiary (3D) structure is a shape resulting from folding of secondary structures determined by interactions between side chains of amino acids.

Water fluoridation and cancer risk in assessing whether fluoridated water can cause cancer, osteosarcoma is so rare that there is little need to study the risk of fluoride. fluoride should not be added to water according to research from dentists.

Fluorides are compounds formed by combining fluorine with another material, usually a metal. Fluoride monofluorophosphate, sodium fluoride, and stannous fluoride are a few examples. (MFP fluoride).

Some fluorides exist naturally in soil, air, or water, though fluoride levels can vary greatly. Fluoride is present in almost all water. Fluoride can also be found in plant and animal foods.

Fluorides are absorbed into the bloodstream through the digestive tract once within the body. They circulate in the blood and tend to congregate in calcium-rich tissues such as the bones and teeth.

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Answer:

there is a need for further research

C. Genetic diseases are TREATABLE but not CURABLE.

Answer:

C

Explanation:

cause it it is fool!!!!!!

Antimycin inhibits the process of active transport across the cell surface membrane. The correct answer is 1.

Active transport is a method of transporting substances across the cell surface membrane against their concentration gradient, meaning that they are moved from an area of lower concentration to an area of higher concentration.

This process requires energy in the form of ATP, which is produced by the electron transport chain in the mitochondria. Antimycin is a chemical that inhibits the electron transport chain, preventing the production of ATP and therefore inhibiting active transport across the cell surface membrane.

Facilitated diffusion and endocytosis, on the other hand, are not affected by antimycin. Facilitated diffusion is a passive process that does not require energy, and endocytosis is a process that involves the formation of vesicles, which is not directly dependent on the electron transport chain.

Therefore, the correct answer is 1. Active transport.

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Answer:

false

Explanation:

The statement "Energy cycles through ecosystems because it returns to the Sun" is definitely false.

An ecosystem may be defined as a type of place or an area where members of different species live together and interact with one another for the purpose of food, shelter, space, and mating partner.

The ultimate source of energy for the living being is delivered by the sun. But the sun never takes this energy in any form. It is true that the energy cycle in the ecosystem but does not passes to the sun. It gets cycled through living organisms like plants, animals, and microorganisms.

The plants captures the energy from sunlight through photosynthesis, herbivores take energy from plants, carnivores take energy from herbivores, and the microorganisms get energy from dead and organic matter.

Therefore, the statement "Energy cycles through ecosystems, because it returns to the Sun", is definitely false.

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The traditional phylogenetic tree model may need modification to account for phenomena like horizontal gene transfer and incomplete lineage sorting.

The traditional phylogenetic tree model, which depicts evolutionary relationships among species as a branching diagram, may need to undergo modification for several reasons. Two significant reasons include the following:

Horizontal Gene Transfer (HGT): The traditional phylogenetic tree model assumes that genetic material is passed vertically from parent to offspring. However, in reality, HGT can occur, where genetic material is transferred horizontally between different species. HGT can introduce genetic variations and disrupt the strict branching pattern of the traditional tree model. It can result in instances where genes from distantly related species are more similar to each other than to their close relatives. To accommodate HGT, modifications to the traditional phylogenetic tree model may include incorporating reticulate networks or using different visualization techniques that allow for lateral gene transfer events.

Incomplete Lineage Sorting (ILS): ILS refers to a phenomenon in which ancestral genetic variation persists within a species due to incomplete lineage sorting during speciation events. This means that different genetic lineages can coexist within a species, leading to conflicts in constructing a single, definitive tree structure. The traditional phylogenetic tree model assumes a single evolutionary history for all genes within a species, which may not be accurate in the presence of ILS. To address this, modifications such as the use of species networks or coalescent-based approaches can be employed to capture the complex evolutionary patterns resulting from ILS.

In summary, the traditional phylogenetic tree model may need to undergo modification due to phenomena like horizontal gene transfer and incomplete lineage sorting. These modifications aim to incorporate a more accurate representation of the evolutionary relationships among species, accounting for the complexities observed in molecular data.

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Explanation:

species are the group of organisms which are compatibly reproduce

Answer:

a or c i dont really know which one

Explanation:

Answer:

B. Passive transport

Explanation:

Answer:

b)Passive transport because the  movement of substances across the membrane without the expenditure of cellular energy.

while active transport is :

active transport is the movement of substances across the membrane using energy from adenosine triphosphate (ATP).

The seven major fish body forms are- fusiform, compressiform, anguilliform, filiform, depressiform, sagittiform, and globiform.

Below are the descriptions of the three body forms and how their physical characteristics are related to their  habitat and niches:Fusiform body form: This body form has a streamlined shape that allows for easy movement through the water. It is most commonly found in open-water fish, such as tuna and mackerel, that need to move quickly to catch prey and avoid predators. Its narrow shape reduces drag, which increases its swimming speed. The fusiform body form is particularly adapted for fast swimming, and it is typically found in fish that are pelagic (live in open water).

Compressiform body form: This body form is flattened from side to side, which gives the fish a ribbon-like appearance. The compressiform body form is well adapted to moving through the water by means of quick, darting movements. They are generally found in areas of shallow water or near the bottom of the sea floor, where they can quickly move to escape danger. For example, eels use the compressiform body form to move quickly through small crevices.Anguilliform body form: This body form is characterized by a long, thin shape that allows the fish to easily move through the water.

This body form is found in fish like eels, which live in narrow spaces such as burrows, rock crevices, or coral reefs. The elongated and flexible body structure of anguilliform fish enables them to move through complex environments easily.In summary, the physical characteristics of fish are related to their habitats and niches. Each of these three body forms is adapted to different environments, from open water to rocky crevices, and each is suited to a different type of swimming or movement.

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Thirteen food molecules are needed by a cell  to process to obtain the same amount of energy from anaerobic fermentation.

Fermentation is another anaerobic (non-oxygen-requiring) pathway for breaking down glucose, one that's performed by many types of organisms and cells. In fermentation, the only energy extraction pathway is glycolysis, with one or two extra reactions tacked on at the end.

Anaerobic fermentation is a metabolic process done by bacteria and eukaryotes in the absence of air to convert carbohydrates into products like gases, alcohol, and acids. This occurs in yeast cells, and a form of fermentation takes place in bacteria and in the muscle cells of animals.

Anaerobic fermentation products are carboxylic acids such as acetic acid, γ-aminovaleric acid, isobutyric acid, isovaleric acid, valeric acid.

The equation is: glucose + enzymes = carbon dioxide + ethanol/lactic acid.

Anaerobic bacteria ferment carbohydrates and amino acids to obtain energy for growth. Due to the absence of oxygen and other inorganic electron acceptors, the substrate of a fermentation has to serve as electron donor as well as acceptor, which results in low free energies as compared to that of aerobic oxidations.

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Answer:A positive, B positive

Explanation:

The group of small, lizard-like reptiles among which are the earliest known reptiles are labyrinthodonts.

Labyrinthodonts were a group of early reptiles that lived during the Paleozoic era. They were characterized by their labyrinthine tooth structure, which consisted of complex folding and infolding patterns. These reptiles were small in size and had a lizard-like appearance. They played a significant role in the evolution of reptiles, as they were the ancestors of modern reptiles, including dinosaurs, birds, and mammals.

Labyrinthodonts had adaptations that allowed them to thrive in diverse environments, such as aquatic habitats. They were the dominant land vertebrates during the Carboniferous and Permian periods, before being replaced by more advanced reptiles. Overall, labyrinthodonts were an important group of reptiles in the early stages of reptilian evolution.

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Scale of the model: 1:10,000. To find the scale of the model, we need to compare the size of the model to the actual size of the red blood cell. Given that the diameter of the red blood cell is 0.008mm and the diameter of the model is 80mm, we can calculate the scale by dividing the diameter of the model by the diameter of the actual cell.

Scale = Model diameter / Actual cell diameter

Substituting the given values:

Scale = 80mm / 0.008mm

Simplifying the expression:

Scale = 10,000

Therefore, the scale of the model is 1:10,000.

1. Identify the diameter of the red blood cell: 0.008mm.

2. Identify the diameter of the model: 80mm.

3. Use the formula Scale = Model diameter / Actual cell diameter.

4. Substitute the values into the formula: Scale = 80mm / 0.008mm.

5. Simplify the expression to find the scale: Scale = 10,000.

6. The scale of the model is 1:10,000, indicating that the model is 10,000 times larger than the actual red blood cell.

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In response to certain conditions, such as the blockage or narrowing of blood vessels, the body can develop alternate routes for blood flow. These alternate routes are called collateral circulation or collateral vessels.

Collateral vessels are preexisting small blood vessels that are typically dormant or have minimal blood flow under normal circumstances. However, when the main pathway is compromised, collateral vessels can enlarge and become functional, providing an alternate route for blood to reach the affected area.

The development of collateral circulation helps to ensure an adequate blood supply to tissues and organs, even in the presence of restricted or blocked blood vessels. The process of collateral vessel development is known as arteriogenesis or angiogenesis, where new blood vessels form and connect with existing vessels to bypass the obstruction and restore blood flow to the affected area.

It's important to note that the development of collateral circulation is a complex physiological process and can vary depending on the specific condition and individual factors.

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Answer:

B and b: Genotype

Dark fur, White fur: Phenotype

BB - Hozygous Dominant

Bb- Heterozygous

bb- Hozygous Recessive