if a segment of one side of a dna molecule has 500 adenine bases, how many thymine bases does the other side have? question 3 options: 0 you can't tell from this data. 250 500

The ureters are the tubes that carry urine from the kidneys into the urinary bladder. They are made of smooth muscle fibers. Uretic peristalsis is the name of this procedure. The smooth muscular contraction in the ureter tubes during ureter peristalsis results in the continual movement of urine toward the bladder.

The ureter is 25–30 cm long and 3–4 mm in diameter in adults. One of the vital organs of the urinary tract that regulates the movement of urine is the ureter.The two ducts or structures that link the kidneys and bladder are referred to as the ureters. These smooth muscle structures' primary job is to move or convey urine from the kidney, where it is produced and filtered through blood, to the bladder, where it is stored before passing through the urethra for elimination. The ureters also start in the renal pelvis, a region of the kidneys, before moving downward to the bladder. The ureter, then, is the organ responsible for transferring urine from the kidney to the bladder.

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The correct answer is C. mRNA carries instructions coded in DNA to the ribosomes where the tRNA decodes mRNA to make proteins.

What is mRNA and tRNA?

Ribonucleic acids, RNAs, are essential components of all living cells. They take part in the protein synthesis. RNAs present in a cell are of three different types; mRNA (messenger RNA), rRNA (ribosomal RNA) and tRNA (transfer RNA). They have been named according to the different functions they perform.

mRNA– they provide a template for gene coding during synthesis of proteins. Site of synthesis is the nucleus in mRNAs. They also carry codons for the process of translation.

tRNA- they carry amino acids to ribosomes for synthesis of protein. tRNAs are produced in the cytoplasm. tRNAs carry anticodons that are specific to particular amino acids.

Therefore, the correct answer is C. mRNA carries instructions coded in DNA to the ribosomes where the tRNA decodes mRNA to make proteins.

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The statement that arthropods have a steady growth pattern growing bigger over time is false.

Arthropods are the organisms with bilaterally symmetrical body and their body possesses an external skeleton. The prominent examples of arthropods are insects, crabs, spiders etc. Arthropods generally grow by forming new segments near the tail, or the posterior end. Arthropods generally shed their exoskeletons periodically by the process called as molting. Since the exoskeleton is a hard structure and its outer layer is non-living or dead, it cannot grow larger in size by small increments as seen in the human skeleton. There are basically four distinct stages in the life cycle of the arthropods which are classified as egg, larva, pupa, and adult.

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Nothing is absorbed here is a wrong statement

Maximum water absorption occurs in the large intestine.

Small intestine is major site of digestion and absorption of food.

It is present in G cells of the gastric antrum and duodenum.

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The wrong statement about stomach from the following list of options is that nothing is absorbed here.

What is absorption in stomach?

The term "absorption" describes how nutrients, water, and electrolytes flow from the small intestine's lumen into the cell, then into the blood.

The ph of the stomach is nearly 1-3.5 that is acidic. Simple sugar, alcohol, a small amount of water, and some medications can be absorbed in the stomach, but the large intestine is where most water can be absorbed.Food is primarily digested and absorbed in the small intestine.

Hence the wrong statement about stomach from the following list of options is that nothing is absorbed here.

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The organ K is the pancreas while the substance Q is insulin.

The pancreas is the accessory organ of the digestive system that is located at the upper part of the abdomen which assists in the metabolism of carbohydrate.

The hormone called insulin is being secreted by the islets of Langerhans of the pancreas which helps the body to utilize glucose which is the end product of digestion of carbohydrates.

Therefore, removal of pancreas lead to drastic increase in glucose levels of the mood while injection of insulin reverses the effect.

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The cardiac conduction system is responsible for the rhythmic contraction of the heart muscle and the generation of electrical signals that control the heart rate. It is composed of specialized muscle cells and nerves that are found throughout the heart. The main components of the system include the sinoatrial (SA) node, the atrioventricular (AV) node, the Bundle of His, the Purkinje fibers, as well as the right and left bundle branches.

The SA node is the heart's natural pacemaker and is located in the right atrium. It is responsible for initiating the electrical impulse that signals the heart muscle to contract. The impulse then travels through the AV node, located at the base of the right atrium, where it slows down before passing through the Bundle of His. This bundle contains specialized fibers that help conduct the electrical impulse to the ventricles. From there, the impulse is transmitted to the Purkinje fibers, which are located in the ventricles. Finally, the impulse is sent to the right and left bundle branches, which help distribute it to the rest of the heart muscle. Through this process, the heart is able to maintain a regular rhythm and beat.

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Secondary levels of protein structure would be most affected by such a mutation.

Detailed explanation: Triple helix forms a unique secondary structure in collagen. It consists of three polypeptide chains, each of which repeats the amino acid sequence glycine-X-Y with proline or hydroxyproline as the typical X and Y.

The triple helix structure is stabilized by a hydrogen bond that is created between the NH group of glycine and the CO group of other residues. The three chains are tightly packed since glycine is the smallest amino acid. This close packing is disturbed when phenylalanine, which is substantially larger in size, replaces glycine as a result of a mutation. Because of this, the collagen's secondary structure, the triple helix, cannot form.

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A neuron is made up of three major components: dendrites, an axon, and a cell body or soma (see figure below), which may be compared to the branches, roots, and trunk of a tree.

Despite the fact that there are billions of neurons and numerous variants, neurons may be divided into three main classes based on their function:

sensory neurons (long dendrites and short axons), motor neurons (short dendrites and long axons), and relay neurons (short dendrites and short or long axons).

There are three kinds of neurons:

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The progesterone receptor (pr) is a transcription factor and steroid hormone receptor. Although the protein src-1 can bind to pr and boost the expression of genes controlled by pr, coactivator does not bind DNA on its own.

The nuclear progesterone receptor is bound to modulate the actions of progesterone (PR). Progesterone receptors (PR) are transcription factors that, like all nuclear receptors, are made up of a DNA binding domain (DBD) sandwiched between an upstream N-terminal region that has terminal ligand binding domain. Sp1 is a member of the 26-member  Sp/KLF transcription factor . It is an example of a progesterone receptor transcription factor that is widely expressed and controls the expression of genes linked to a variety of biological functions in mammalian cells.

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The theory is said to have been definitively refuted by Louis Pasteur, who also suggested that "life only derives from life."

The concept of "spontaneous generation" held that life things can emerge from non-living things. Louis Pasteur notably devised an experiment that refuted the hypothesis in a debate between biologist Felix Pouchet and chemist Louis Pasteur staged by the French Academy of Sciences in the late 19th century. The earliest observations of bacteria and protozoa were made by Antonie van Leeuwenhoek using single-lens microscopes that he created. His in-depth study of the development of tiny creatures like fleas, mussels, and eels contributed to the debunking of the hypothesis of life's spontaneous creation.

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Answer:

Explanation:

Sure! The nephron is the basic unit of the kidney, and each nephron has a specialized structure for filtering the blood. The filtration process begins when blood enters the afferent arteriole and is directed into the glomerulus, which is a network of tiny blood vessels. The high pressure within the glomerulus causes some of the dissolved substances in the blood, such as glucose and electrolytes, to pass through the walls of the blood vessels and into the Bowman's capsule. This process is known as filtration.

However, not all materials are able to pass through the glomerulus and enter the Bowman's capsule. The walls of the glomerulus contain tiny pores called fenestrae, which allow small molecules to pass through but prevent larger molecules and cells from passing. This selective filtration process helps to maintain the balance of nutrients and other substances in the body.

Scientists can study the filtration process by using a micropipette, which is a thin glass tube with a very small opening at the end. By inserting the micropipette into the glomerulus or Bowman's capsule, scientists can extract small samples of fluid for analysis. This allows them to study the composition of the fluid and understand more about the filtration process.

LTD is triggered by 1.ca 2 influx into the postsynaptic terminal low-frequency stimulation followed by small or slow increase in ca.

LTD is known as the main factor for decreasing in postsynaptic receptor density, in many cases a decrease in presynaptic neurotransmitter  also play a role. Cerebellar LTD has been hypothesized to be important for motor learning. Despite these reasons, it is likely that other plasticity mechanisms also plays a vital role.

Hence, If postsynaptic Ca2+ levels are high ,this causes LTP to occurs. If postsynaptic Ca2+ levels are low that happens when postsynaptic potential precedes presynaptic activity ,that leads LTD to occurs.

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All of the listed choices are possible cytopathic effects (CPE) of viruses.

The options above all represent potential cytopathic effects (CPE) of viruses.

While noncytopathic viruses, like LCMV, reproduce without harming their host cells, cytopathic viruses induce the death of the infected cells. Cytopathic viruses either cause the infected organism to perish or are entirely destroyed by the immune system. Viral interactions with the host lead to cytotoxic consequences. It is significant to note that the host cell as well as the virus define the CPE. According to how susceptible the cells are to infection. being a cell that is receptive to the development of a virus. The term "cytopathic effect" describes how viral infections alter the structure of the host cell. Cell lysis is the outcome of the viral infection.

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Explanation:

A scientific law tells what happens

Scientific laws can't be changed

A scientific theory tells why it happens

Scientific theories can be changed

Oil refineries, paper factories, textile and sugar mills, chemical factories are responsible for water pollution.

So Both b and c are responsible for the causes of water pollution

The term "water pollution" refers to the contaminating of water bodies, typically as a result of human activity, which has a detrimental impact on the uses of the water. Lakes, rivers, oceans, aquifers, reservoirs, and groundwater are all examples of bodies of water. When contaminants are added to these water bodies, water contamination occurs.

Water bodies, including lakes, rivers, seas, and oceans, as well as groundwater, are all considered to be subject to pollution. It happens when pollutants enter these bodies of water untreated. Water bodies become contaminated as a result of waste entering them from homes, factories, and other buildings.

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If a patient presents with an elevated lymphocyte count compared to other white blood cells, they likely have a bacterial infection.

If your doctor determines that your lymphocyte count is high, the test end result is probably proof of one of the following conditions: infection (bacterial, viral, different) most cancers of the blood or lymphatic device. An autoimmune sickness inflicting ongoing (continual) infection.

Lymphocytes assist fight off diseases, so it is normal to look a brief growth after an infection. A count number considerably higher than three,000 lymphocytes in a microliter of blood is generally taken into consideration to be lymphocytosis in adults.

Lymphocytosis often outcomes from viral infections. micro organism and parasites can also reason infection, ensuing in a excessive lymphocyte depend. Infectious reasons of lymphocytosis include: Epstein-Barr virus (the virus that causes mononucleosis).

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A bacterial RNA polymerase produces messenger RNA (mRNA) when it transcribes a protein-coding gene.

RNA polymerase connects to a promoter sequence close to the start of a gene to start transcription (directly or through helper proteins). A new, complementary RNA molecule is created by RNA polymerase using a template from one of the DNA strands (the template strand). Termination is the procedure that brings transcription to a conclusion.

RNA polymerase is a multiprotein complex molecule that regulates transcription, the process by which the data contained in a molecule of DNA is replicated into a fresh molecule of messenger RNA. Both the class of RNAs that these polymerases transcribe and the amount and type of subunits that they contain vary among them.

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Emotions largely affect autonomic responses through integrating in the hypothalamus.

Positive emotions modify the autonomic responses  nervous system's activity, with enhanced parasympathetic nervous system activity, whereas negative emotions, such as rage, cause the parasympathetic nervous system to withdraw and increase sympathetic nervous system activity. hypothalamus It turns on processes required to stimulate the fight-or-flight response, the body's preparedness to either attack or flee from an opponent. The sympathetic reaction is accompanied by strong emotions like fear, rage, and even euphoria. The paraventricular nucleus is the primary hypothalamic region for the central regulation of the autonomic nervous system, which is controlled by the hypothalamus. The dorsal longitudinal fasciculus is the principal autonomic responses line from the hypothalamus.

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The following are all generally primate characteristics except the case of mostly carnivorous.

So, the correct option is D.

Differentiating themselves from less evolved animals, the primates have distinctive traits. A few of these are opposable thumbs, large brains, enhanced eyesight, arboreal adaptability, and greater shoulder mobility. The following characteristics set primates apart from other mammals: unspecialized structure, specialized behavior, a short muzzle, a relatively poor sense of smell, prehensile five-digit hands and feet with flat nails instead of claws, and keen vision with depth perception as a result of being forward-facing.

All primates, except three, still have five fingers and toes on each hand and foot. The spider monkeys, sometimes known as woolly spider monkeys, of South America and the colobus monkeys of Africa are the exceptions, both of which have lost or decreased their thumb.

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Answer:

Explanation:

D. The forelimb of a dog and the forelimb of a cat

(Option B.) The diploid nucleus is the nucleus of a cell that contains both sets of genetic material from the organism, typically from the parents.

To perform reproductive cloning, one must have an enucleated egg cell, a surrogate mother, and a:

Reproductive cloning requires an enucleated egg cell, a surrogate mother, and a diploid nucleus. The diploid nucleus is the nucleus of a cell that contains both sets of genetic material from the organism, typically from the parents. In the case of reproductive cloning, this nucleus is taken from the organism that is being cloned and is inserted into the enucleated egg cell from the surrogate mother. This nucleus will then be combined with the egg cell to create a new organism that is genetically identical to the donor organism. This process is the foundation of reproductive cloning, and is essential for genetic replication.

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Packaging cells do not make active viruses because helper DNA lacks packaging sequences and therapeutic DNA lack essential viral genes.

A key component of gene therapy is the genetic modification of cells to have a therapeutic effect or the repair or reconstruction of damaged genetic material in order to treat disease. Although Martin Cline made the first effort to alter human DNA in 1980, the National Institutes of Health-approved first nuclear gene transfer in humans was carried out in May 1989.

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Answer:

i rlly don't know srryyyyy

A human cell contains between 20 000 and 25 000 genes, compared to about 4000 genes in an E. coli cell. That is why the human genome is larger than E. coli.

The haploid set of chromosomes in a gamete or microorganism, or in each cell of a multicellular organism is known as genome of an organism. In other words, the complete set of genes or genetic material present in a cell or organism can be called the genome of the organism.

A chromosome is a lengthy DNA molecule with part or all of the genetic material of an organism. The very long, thin DNA fibers in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.

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The most effective drawing method to employ is B - Simple cartoon

What is butterflies ?

Having a small body and huge, frequently colorful wings, butterflies are flying insects. Certain flowers that draw butterflies are planted by some gardeners.

Moths, which have wings that are disproportionately huge to their bodies and antennae like butterflies do, are a near relative of butterflies. The relatively big size and gorgeous, patterned wings of a butterfly make it remarkable. They begin life as caterpillars after hatching, and after creating a chrysalis, they change into butterflies and emerge from it. Though its history is unknown, some believe that some butterflies' pale yellow hues are where the butterfly got its start.

The broad, scaly wings of butterflies make them attractive flying creatures. They have three body components, six jointed legs, a pair of antennae, complex eyes, and an exoskeleton, just like all other insects.

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A common ancestor's evolutionary history causes physical characteristics to be homologous.

Variation, heredity, & differential fitness—the three fundamental tenets of evolution that were codified in the 1970s—remain a conceptual yardstick for the idea on natural selection-driven evolution.

Different species with comparable architecture may be homologous (shared by ancestry) and similar .Similarities at the molecular level are proof that life has a common ancestor.Comparing DNA sequences can reveal the relationships between various species.

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Capsid, Capsomere (core protein), Envelope with glycoproteins, and Ribosome are only present in viruses. Protein, RNA, and DNA are the items that are found in free virus particles etc.

A virus is an infectious submicroscopic creature that only reproduces inside of live cells. Viruses can infect every type of life, including bacteria, archaea, and both animals and plants. Since the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898 and Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants, more than 9,000 virus species have been described in detail. There are millions of different types of viruses in the environment. Viruses are the most common sort of living organism and can be found in practically all ecosystems on Earth. Virology, a branch of microbiology, is the study of viruses.

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In cellulose, the b-glycosidic linkage of glucose creates intra- and interchain hydrogen bonds, which result in fibers that are straight, stable, and exempt from water.

Linear glucose polymers with 1,4-bonds join amylose and cellulose. The anomeric configuration, in which cellulose's monomeric units are joined by glycosidic links while amylose's glucose units are connected by glycosidic bonds, accounts for the majority of the differences.

A sugar molecule is joined to another group, which may or may not be another carbohydrate, by a covalent bond known as a glycosidic bond or glycosidic linkage.

Ethyl glucoside is created when glucose and ethanol mix to create water and ethyl glucoside. Due to the anomeric effect, the reaction frequently favors the formation of the -glycosidic bond, as demonstrated.

The hydroxyl group of a substance, such as an alcohol, and the hemiacetal or hemiketal group of a saccharide (or a molecule produced from a saccharide), form a glycosidic link. A glycoside is a chemical that has a glycosidic bond.

The definition of "glycoside" has now been expanded to include compounds that contain bonds between hemiacetal (or hemiketal) groups of sugars and a number of other chemical groups.

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