disperse dyes can be used to dye which fibers? select one: a. cotton, polyester and wool b. nylon, cellulose acetate and cotton c. nylon, polyester and cellulose acetate d. wool, kevlar and polypropylene e. none of the above

Answer:

Explanation:

not sure on the first one but number two is the sun (im pretty sure) and number three is all water is locked into an indefinate cycle that cannot be breached

a process where the cervix, vagina, and vulva are examined with a lighted, magnifying device called a colposcope. An device known as a speculum is used during colposcopy to expand the vagina.

So that the cervix may be seen more clearly. Colposcope: A device for medical use in examining the cervix; it allows the user to see inside a hollow space. The cervix, vagina, and vulva are examined during a colposcopy using a lit, magnifying equipment called a colposcope. The most popular tool used by gynaecologists to examine the vagina and cervix is the two-bladed, or bivalve, speculum.

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Answer:

- Brain is protected by a hard, bony box called the or skull or other terms the cranium

- It is covered by three membrane called meninges

- It is protected by cerebrospinal fluid balloon which acts as shock absorber

Answer:

thank me later

Explanation:

Solution:

Both insects and arachnids are arthropods. However, in the morphology of an insect, there are 6 legs. While in the morphology of an arachnid there are 8 legs. Also, arachnids do not have antennae, their head is not differentiated from the body but is typically divided into two main regions called the cephalothorax (prosoma) and the abdomen (opisthosoma). Spiders belong to the arachnids, therefore a spider is different from an insect. Therefore, a spider cannot be classified as an insect.

Bacterial endospores are protected from chemicals and various lytic enzymes due to the presence of the spore layer called the Coat

Spores known as endospores are produced inside of cells, primarily in bacteria. These spores are produced by vegetative or mother cells of bacteria called sporangia. Bacteria are protected from harmful environmental factors such nutritional shortage (carbon and nitrogen) and overcrowding by endospores.

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Answer:

Picture? to the question you are asking.

Explanation:

Answer:

I'll work my way from the bottom right to the left and up... ( Hope this doesn't get too confusing ^^:)

New Protein is "SECRETION OF PROTEIN BY THE CELL"

The purple things "SYNTHESIS OF PROTEIN MOLECULES BY mRNA AND tRNA"

The green squiggle "FORMATION OF mRNA IN THE NUCLEUS"

The DNA strand in the nucleus "INITIATION OF DNA REPLICATION BECAUSE OF A SIGNAL GIVEN BY THE HORMONE"

The inner receptor "BINDING OF THE HORMONE MOLECULE WITH ITS RECEPTOR OF THE CELL"

The top box for tissue and hormone "SECRETION OF HORMONE BY TISSUE"

Hope this helps ya!!! ^^~

Aspartic acid (Asp) is the least likely amino acid to be found in the transmembrane domains of GPCR43. This is because Asp is a polar and charged amino acid, which doesn't favor the hydrophobic environment found in transmembrane domains. So the correct answer is option A.

The transmembrane domains of GPCR43 are hydrophobic in nature and contain mainly non-polar amino acids. Among the given options, Asp is a polar amino acid and is less likely to be found in the transmembrane domains of GPCR43. On the other hand, Gly is a small, non-polar amino acid that is commonly found in transmembrane domains of proteins due to its ability to adopt a range of conformations. Trp and Phe are both bulky, aromatic amino acids that are commonly found in transmembrane domains due to their ability to form stable hydrophobic interactions with the surrounding lipid bilayer.

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Answer:

nucleolus

Explanation:

The nucleolus is a region found within the cell nucleus that is concerned with producing and assembling the cell's ribosomes. Following assembly, ribosomes are transported to the cell cytoplasm where they serve as the sites for protein synthesis. Within the cell nucleus there's a very specific part called the nucleolus. This does not contain the chromosomes. What this contains is the machinery necessary to assemble the cell's ribosomal RNAs.

The given statement is "Diabetes and having hypertension are disjoint probabilities." The probability of the event that diabetes and hypertension co-occur can be found using the formula: P (A ∩ B) = P (A) + P (B) - P (A ∪ B). Let's solve this. True or False: Diabetes and hypertension are disjoint probabilities. False.

Diabetes and hypertension are not disjoint probabilities because it is possible for an individual to have both diseases. They often occur together. Therefore, the given statement "Diabetes and having hypertension are disjoint probabilities" is false. The probability of the co-occurrence of both diseases can be found using the formula: P (A ∩ B) = P (A) + P (B) - P (A ∪ B). Therefore, the probability of having diabetes and hypertension is not zero.

Patients with diabetes have hypertension twice as often as those without the disease. Furthermore, compared to people with normotension, persons with hypertension frequently show signs of insulin resistance and are more likely to develop diabetes.

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The pair of ligaments covered by laryngeal epithelium that function in sound production are the vocal cords or vocal folds.

The vocal cords, also known as vocal folds, are a pair of ligaments covered by laryngeal that are located within the larynx, or voice box. They play a critical role in sound production by vibrating when air is passed over them, producing sound waves that can be modified by the muscles of the larynx, mouth, and throat to produce speech and other vocalizations. The vocal cords are composed of layers of muscle, connective tissue, and mucous membrane. They are controlled by several muscles, including the thyroarytenoid muscle, which is responsible for adjusting the tension on the vocal cords to produce different pitches and tones.

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As a general statement, the higher the heritability coefficient, the stronger the influence of one's genes on a specific trait being examined. The correct option is D.

Heritability is a measure of the extent to which variation in a trait is due to genetic variation. It is calculated by dividing the variance in a trait due to genetic factors by the total variance in the trait. The heritability coefficient can range from 0 to 1, with a higher value indicating a stronger influence of genes.

For example, the heritability of height is estimated to be about 0.8, which means that about 80% of the variation in height is due to genetic factors. The remaining 20% of the variation is due to environmental factors, such as nutrition and health.

It is important to note that heritability is not a measure of how fixed or unchangeable a trait is. It simply measures the extent to which variation in a trait is due to genetic factors. The heritability of a trait can change over time, and it can also vary depending on the environment.

Therefore, the correct option is D, heritability.

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Answer:

This is a female with a disorder.

Explanation:

Looking at the karyotype, you can see that there are two X chromosomes; this signifies this person is a female.

If you look at the chromosomes at 21, you can see an extra chromosome that would not be present in a typical female. This means the female has some disorder due to the extra chromosome on 21.

Answer:

B. VESSELS, HEART, CIRCULATING FLUID.

Explanation:

Blood is the circulating fluid. It is the connective tissue of liquid plasma and cells.

Heart is a muscular pump to move the blood and have it circulate throughout the body of living animals.

Blood vessels are arteries, capillaries and veins that deliver blood to all tissues.

The Circulatory System has two types. They are the open circulatory system and the close circulatory system.

An open circulatory system is one where the blood does not circulate inside blood vessels  but also flows into cavities that irrigate tissues.

A close circulatory system is one where the blood circulate only inside the blood vessels.

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Answer:

B)vessels, heart, circulating fluid

Explanation:

Answer:

Scientists used the scientific method of investigation to test this phenomenon. The scientific method consists of these steps:

Make observations: Scientists observed that nerve damage causes severe pain. Scientists knew bone marrow cells seemed to decrease nerve pain, but the reason was unknown.

Ask questions and construct the hypothesis: Would injecting bone marrow cells into the spinal cord decrease pain?

Test the hypothesis: Injected bone marrow cells into the spinal cord of mice that had nerve damage. Observed changes in the cells, and monitored the pain levels in the mice.

Analyze the results and make a conclusion: Determined that the pain decreased because the bone marrow cells released a pain-relieving protein that helps damaged cells.

Test and modify: Make a plan to repeat the test in humans.

Explanation:

Here, the assertion i.e., deficiency symptoms occur if the soil is lacking any particular element is correct. But the reason is incorrect.

When a material is exposed to or contaminated with another substance, it can have toxic consequences that result in serious biological harm or death.

When the soil is deficient in vital substances like nitrogen, phosphorus, potassium, magnesium, etc., deficiencies manifest as symptoms.

Only when the plant is given those crucial nutrients can these symptoms be managed.

Only very little amounts of micronutrients are required by plants, and too much of them can be harmful and impair normal body processes.

Thus, here, the assertion is true but the reason is incorrect.

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Answer:

Yes

Explanation:

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. Wikipedia

The controversy between protein and DNA as the genetic material was resolved when experiments demonstrated that DNA, not protein, carries the hereditary information.

There was a significant scientific controversy surrounding the nature of genetic material in the early days of molecular biology. While proteins were initially considered strong candidates for carrying genetic information, it was ultimately discovered that DNA (deoxyribonucleic acid) is the molecule responsible for storing and transmitting genetic information. However, the connection between proteins and DNA, known as the "missing link," was initially overlooked.

The main reason proteins were initially favored as the genetic material was that they exhibited a remarkable structural diversity, and it was known that proteins played crucial roles in various cellular functions. Additionally, proteins were composed of 20 different amino acids, providing a greater potential for complexity and variation compared to the four nucleotides found in DNA.

One key experiment that played a significant role in the controversy was performed by Frederick Griffith in 1928. Griffith was studying the bacterium Streptococcus pneumoniae and observed that a non-virulent strain could become virulent when exposed to a heat-killed virulent strain. This phenomenon was termed "transformation." However, at the time, the precise nature of the transforming substance was unknown.

The turning point came in 1952 with the work of Alfred Hershey and Martha Chase. They performed an elegant experiment using a virus called bacteriophage T2, which infects bacteria. They tagged the protein coat of the virus with radioactive sulfur and the DNA with radioactive phosphorus. By infecting bacteria and separating the virus from the bacteria, they demonstrated that only the radioactive DNA, not the protein coat, was transferred to the bacterial cells. This experiment provided direct evidence that DNA, not protein, was the hereditary material.

The connection that was initially missed between proteins and DNA was the role of DNA as the template for protein synthesis. In 1953, James Watson and Francis Crick proposed the double-helix structure of DNA, and crucially, they suggested that the sequence of nucleotides in DNA could encode the sequence of amino acids in proteins. This proposal laid the foundation for the understanding of the genetic code, where specific sequences of DNA nucleotides (codons) correspond to specific amino acids, forming the basis for protein synthesis.

Once the connection between DNA and protein synthesis was established, it became clear that DNA's ability to store and transmit genetic information, its chemical stability, and its ability to undergo mutations were all properties essential for a molecule serving as the genetic material.

In summary, the controversy between protein and DNA as the genetic material was resolved when experiments demonstrated that DNA, not protein, carries the hereditary information. The missing link was the understanding of DNA's role as a template for protein synthesis, which provided the connection between the two molecules and confirmed the central role of DNA in storing and transmitting genetic information.

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Cholesterol is a lipid molecule that is an essential component of cell membranes. It is also the basic structure for the synthesis of steroid hormones, such as estrogen, testosterone, and cortisol. In order to make hormones more efficiently, it is advantageous to alter existing cholesterol molecules instead of creating them from scratch.

This is because cholesterol is readily available, and the synthesis of a new molecule requires more energy and time than modifying an existing one.Modifying the carbon skeleton of cholesterol enables a wide variety of steroid hormones to be produced with a few structural changes. The functional groups, such as hydroxyl and carboxyl groups, that are attached to the carbon skeleton alter the hormone's activity and influence its function.

The attachment of functional groups to the carbon skeleton results in a wide range of hormone actions, from male and female sex hormone regulation to the maintenance of glucose and salt levels in the blood.

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Constant exposure to vehicle pollutant and harmful gases is a result of using diesel and petrol which cause more pollution and effects health.

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Answer:

Action potentials are generated when information are sent down an axon through the neuron.

Explanation:

Neurons are nerve fibres which uses electrically charged chemicals to bring about an electrical change.

Action potentials can be defined as rapid changes in the membrane potential that spread rapidly along the nerve fiber membrane. Each action potential begins with a sudden change from the normal resting negative membrane potential to a positive potential and then ends with an almost equally rapid change back to the negative potential. The are three stages of action potential, these include:

--> Resting stage: This is the resting membrane potential before the action potential begins. The membrane is said to be 'polarized' during this stage.

--> Depolarisation stage: in this stage, the membrane suddenly becomes very permeable to sodium ions, allowing tremendous numbers of positively charged sodium ions to diffuse to the interior of the axon. That is, the normal polarised state, for example -90 millivolts, is immediately neutralised by the inflowing positively charged sodium ions, with the potential rising rapidly in the positive direction. This is called DEPOLARISATION.

--> Repolarisation stage: This occurs within a few seconds after the membrane becomes highly permeable to sodium ions, the sodium channels begin to close and the potassium channels open more than normal. Then, rapid diffusion of potassium ions to the exterior re- establishes the normal negative resting membrane potential. This is called REPOLARISATION of the membrane.

The endocrine system is responsible for hormone synthesis and secretion in animals. Organelles of the endomembrane system is expect to find in great number in endocrine cells.

Endocrine System- The glands & organs that produce hormones & release them into the bloodstream so they can reach all of the body's tissues and organs. Growth and development, metabolism, & reproduction are just a few of the vital processes in the body that are regulated by the hormones the endocrine system secretes.

Hormone- Chemicals called hormones function in the body as messenger molecules. They are created in one area of the body and then go to other areas where they assist regulate how cells & organs function.

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Explanation:

The nervous system is involved in receiving information about the environment around us (sensation) and generating responses to that information (motor responses). The nervous system can be divided into regions that are responsible for sensation (sensory functions) and for the response (motor functions).

Answer: A

Explanation:

Central Dogma. DNA is transcripted into RNA, which is Translated into polypeptides, or protiens.

It is true that denaturing an apoenzyme will destroy the three-dimensional shape of the protein, making it non-functional. Apoenzymes, also known as inactive enzymes, are enzymes that are not completely folded and require additional components to become catalytically active.

The apoenzyme part of an enzyme is the protein part of the enzyme, whereas the cofactor is a non-protein component. It is necessary to maintain the three-dimensional structure of the protein to make the enzyme functional. If this three-dimensional structure of the protein is destroyed, the enzyme loses its function.

The denaturation of apoenzymes can be caused by a variety of factors, including temperature changes, pH variations, chemical reactions, etc. It's crucial to keep the protein in its correct shape to ensure proper function.

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