When O2 binds to heme in hemoglobin, the ____ ion is drawn into the plane of the ____ causing a conformational change that is transmitted to adjacent subunits enhancing the ____ for additional O2 binding.

The most likely explanation for the failure of bm12 mice to make a CD4 T cell response to bovine insulin is because the bovine insulin [A 1-14] fails to bind to bm12.

This happens because MHC complexes on antigen-presenting cells will be recognized as foreign by T cells of bm12mice due to which it fails to respond against bovine insulin.

T cells are specific against a particular antigen and are manufactured in the thymus. Once released from the thymus they remain circulating in the body until they recognize their specific antigen on the APCs [antigen presenting cells]. Then CD4+ helper T cells and CD8+ cytotoxic T cells come into action and bind to the specifically recognized antigen forming an MHC complex over the surface of APCs triggering the activation of the T cells in the secondary lymphoid organs.

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Answer:

$42.08

Explanation:

First equate the discounted(sale price) $46.75 to 100%. If

$46.75=100%,what about 90%since it was discounted by 10%

(90%×46.75)÷100

=$42.08

It takes 5 minutes to eliminate 90% of the organisms using this process

Sterilization refers to the process of destroying or eliminating the life of any form of microorganism and is performed in a medical facility by physical or chemical methods. Pressurized steam, dry heat, EtO gas, hydrogen peroxide gas plasma, and liquid chemicals are the main sterilizers used in medical facilities. Sterilization means communicating the absolute meaning. Unfortunately, some health professionals and technical and commercial literature call "sterilization" and articles "semi-sterile". When chemicals are used to destroy all forms of microbiological life, they are sometimes referred to as chemical disinfectants. The same disinfectant used for shorter exposure times may also be part of the disinfection process (ie, higher levels of disinfection).

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An amoeba uses pseudopodia to engulf its food via a process called endocytosis. The correct answer is D.

A type of active transport called endocytosis occurs when a cell takes in substances from the outside by engulfing them with its membrane. In this instance, the amoeba encloses the food particle with its membrane to form a vesicle. Phagocytosis, a particular kind of endocytosis that entails the consumption of solid particles, is another name for this process.

There are several steps involved in the amoeba's endocytosis process. The amoeba first comes into contact with the food particle. The particle is then surrounded, and eventually a vesicle is formed when the membrane completely encloses the particle. The pH is lowered inside the vesicle, which aids in the contents' degradation. The amoeba can absorb nutrients from ingested food thanks to this process.

This makes endocytosis a correct answer, i.e. option D.

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Answer:

answer is option is easy it is c

A pyramid of biomass represents the amount of living tissue within a tropic area (Option a).

Biomass refers to the amount of mass instead of energy contian in a given ecosystem/tropic level.

Biomass is mainly dependent on the number of producer organisms (e.g., plants) in the ecosystem.

In conclusion, a pyramid of biomass is the living tissue within a tropic area (Option a).

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Charles Darwin's theory of pangenesis, in which every part of the body contributes to an egg or sperm, implied blending inheritance. Darwin's theory of natural selection was founded on the premise that blending inheritance would average out any novel beneficial trait before selection could act.

Blending inheritance is an outmoded biological theory from the nineteenth century. According to the theory, children inherit any characteristic as the average of their parents' values for that characteristic.

As an example, a cross between a red flower variety and a white variety of the same species would result in pink-flowered offspring.

Charles Darwin's theory of pangenesis, in which every part of the body contributes to an egg or sperm, implied blending inheritance.

Darwin's theory of natural selection was founded on the premise that blending inheritance would average out any novel beneficial trait before selection could act.

Thus, this can be the importance of blending inheritance.

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Parkinson's disease

Parkinson's disease (PD) is a neurodegenerative ailment that primarily affects dopamine-producing ("dopaminergic") neurons in the substantia nigra, a particular region of the brain.

In most cases, symptoms appear slowly over many years. Due to the variety of the condition, the evolution of symptoms can vary a little from person to person. People with PD might go through:

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Answer:

A xerophyte is a species of plant that has adaptations to survive in an environment with little liquid water, such as a desert like hot and dry

Hot and dry type of desert would most likely contain the greatest number of xerophytes. So, the correct option is C.

Xerophytes are plants which have evolved to thrive in arid or low-water situations. These plants have a variety of characteristics that aid in water conservation, including deep roots that can access groundwater, thick, waxy leaves that limit water loss via transpiration, and the capacity to close stomata during the warmest part of the day. Cacti, succulents, and a wide variety of desert plants are examples of xerophytes.

The greatest concentration of xerophytes would presumably be found in hot, dry deserts because of their adaptation to such environments. In order to thrive in arid settings, plants known as xerophytes have developed specialised adaptations to lessen water loss and retain water in their tissues.

Therefore, the correct option is C.

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In female mammalian cells, one X chromosome of the two would undergo random inactivation early in embryonic life, and therefore both males and females have a single active Y. with this the disease has a predilection in men because women do not carry the Y gene

Recessive lethal alleles cause death when they are homozygous. Death occurs at the stage when the product of this gene is needed. If the gene in question is responsible for the synthesis of a particular protein in early childhood, for example, the organism will die at that moment.

With this information, we can conclude that Y chromosome, is what guarantees the development of a male embryo and the lethal “b” allele

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Camp meetings and prayers during work hours are the two methods that helped the revivalists of the Great Awakenings increase people’s participation.

The Great Awakening was a religious revival that impacted the English colonies in America. This movement started when the idea of secular rationalism was being emphasized. This movement bring survival of religion in the society.

So we can conclude that Camp meetings and prayers during work hours are the two methods that helped the revivalists of the Great Awakenings increase people’s participation.

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The two methods that helped the revivalists of the Great Awakenings increase people’s participation were camp meetings and prayers during work hours.

Revivalists are individuals that promotes and conducts religious revival meetings.

In order to increase the participation of the people the following activities where encouraged:

Therefore, the two methods that helped the revivalists of the Great Awakenings increase people’s participation were camp meetings and prayers during work hours.

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Answer:

Explanation:

Going outside with wet hair

Children have heard the warnings since the beginning of time: “Don’t go out in the cold with wet hair, or you’ll catch pneumonia!” But with apologies to grandma (she has so much other wisdom to share), this one isn’t true.

You cannot get sick from simply going outside with wet hair.

“Hair being wet is not the cause for catching a cold,” Dr. Goldman says. “A microorganism, such as a virus, has to be involved to cause a cold.”

The intrinsic pathway gets triggered by the activation of clotting factor XII in hemostasis.

We do not fully understand the precise function of factor XII in the clotting process or any extra effects it may have on the body. Factor XII may be involved in tissue repair and blood vessel development in addition to the clotting process (angiogenesis).

The intrinsic pathway is the longer pathway of secondary hemostasis. It begins with the activation of Factor XII (a zymogen, inactivated serine protease) which becomes Factor XIIA (activated serine protease) after exposure to endothelial collagen.

In the vascular system, trauma activates the intrinsic pathway, which is also triggered by platelets, exposed endothelium, chemicals, or collagen. Although slower than the extrinsic pathway, this one is more crucial.

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Groups of small cells better than one large cell at moving material in and out because they have a lower surface to volume ratio. Option D

A cell can be defined as the simplest, basic, structural and functional unit of life. The study of cell is known as cytology.

There are two types of living organisms based on the numbers of cells they have; these are

Therefore, groups of small cells better than one large cell at moving material in and out because they have a lower surface to volume ratio.

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The right optic tract carries information from the lateral half of the retina (right eye) and the medial half of the retina (left eye).

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Inquiry differs from the scientific method in the following ways:

Inquiry is a mere search for information or fact while scientific method is a procedural method of discovering information.

The scientific method is a method of discovering knowledge about the natural world based on hypotheses, testing them empirically, and developing theories that match known data from repeatable physical experimentation.

Inquiry refers to a search for truth, information, or knowledge or the examination of facts or principles. It can also be termed as an investigation.

Therefore, inquiry is a mere search for information or fact while scientific method is a procedural method of discovering information.

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SNPs are Single nucleotide polymorphism and they produce phenotypic differences.

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You were unable to read the lab manual through the tubes containing hypertonic or isotonic solution because the cells in those solutions remained intact, causing the solutions to be opaque.

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Answer:

through the help of gills?

A normal human genotype is made up of a set of 23 pairs of chromosomes.

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Answer:

please include a picture so I can see what you are referring to

According to the research, an action potential along the sarcolemma depends upon diffusion of sodium ions through voltage-gated channels.

It is the specialized cell membrane that surrounds the cells of striated muscle fibers.

It resembles in many respects the plasma membrane of neuronal cells, the action potential propagates through it, opening voltage-dependent sodium channels and causing the opening of more sodium channels.

Therefore, we can conclude that an action potential along the sarcolemma depends upon diffusion of sodium ions through voltage-gated channels.

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Fungi and some soil-borne pathogenic microorganisms are most likely to secrete proteases which allow them to use protein as an energy and carbon source.

An enzyme called a protease catalyzes the breakdown of proteins into smaller polypeptides or individual amino acids.

Basically, protease is a protein hydrolyzing enzyme.

There are different functions of this enzyme but in some cases like fungi and other soil-borne pathogenic microorganisms, it allows proteins to serve as a source of carbon and nitrogen for the growth of microbes.

Enzymes that break down proteins(proteases) are released by these microbes extracellularly into amino acids .These amino acids can then be carried into cells and enter metabolic pathways for energy production.

In this way, these microbes secrete proteases which allow them to use protein as an energy and carbon source.

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Answer:

The two cycles are photosynthesis and cellular respiration.

Cellular respiration releases energy stored in glucose (during photosynthesis). Most of this energy is transferred to an energy molecule that can be used by all cells: ATP.

And the wastes of respiration are carbon dioxide and water, which are precisely the raw materials of photosynthesis in chloroplasts (forming two linked closed cycles).

Explanation:

Answer:

The two cycles are photosynthesis and cellular respiration.

The statement “the standard scientific method is how we conduct all scientific research,” is true.

Standard Scientific Methods

The problem-solving method utilized for various scientific studies is called scientific methods. It has 5 common steps and one feedback step. They are,

Such a methodology is utilized in all fields of science including chemistry, biology, physics, geology, psychology, etc. During such a study the hypothesis formed in the beginning could be correct or incorrect and this result can be used to form new hypotheses and observations. Most of the time such studies are not linear and can circle back to the origin.

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The statement “the standard scientific method is how we conduct all scientific research,” is true.

Standard Scientific Methods

The problem-solving method utilized for various scientific studies is called scientific methods. It has 5 common steps and one feedback step. They are,

Such a methodology is utilized in all fields of science including chemistry, biology, physics, geology, psychology, etc. During such a study the hypothesis formed in the beginning could be correct or incorrect and this result can be used to form new hypotheses and observations. Most of the time such studies are not linear and can circle back to the origin.

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Answer:

C. burning mass quantities of fossil fuels

Explanation:

CO2 is a byproduct of burning fossil fuels. There are three isotopes of carbon (C), 12, 13, and 14. The most prevalent carbon is C-12, followed by C-13 and C-14, which are both relatively uncommon. C-12 is preferred by plants over the heavier C-13 and C-14. Global CO2 emissions are increasing. Since fossil fuels are derived from ancient plant deposits, they are rich in C-12 and depleted in C-13 after burning. As a result, there is a greater concentration of C-12 in the CO2 produced by the combustion of fossil fuels. In addition to CO2 levels rising, the ratio of atmospheric carbon isotopes is also shifting, with an increase in the ratio of C-12 to C-13. indicating that the C-12 isotope of CO2 is present in greater amounts than the C-13 isotope in the environment. This makes sense given that fossil fuels, which are high in C-12 and low in C-13, burn when they are burned.

The use of fossil fuels wouldn't immediately cause climate change. Instead, the burning of fossil fuels releases triatomic molecules, whose chemical structure allows them to be both unexcited by UV light and highly stimulated by IR radiation, thereby contributing to the greenhouse effect. (Molecules like methane and carbon dioxide act as windows for UV light while acting as barriers for IR light.) Excited molecules can reduce their level of excitement by releasing photons, which causes them to release some of the energy that was supplied to them in the form of IR radiation.

Answer:

There is overwhelming evidence that human activities, especially burning of fuels, are leading to increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn amplify the natural greenhouse effect, causing the temperature of the Earth's atmosphere, ocean, and land surface to increase

the answer will c

Answer:

Lysosomes

Explanation:

Disintegrator bodies, or lysosomes, are spherical organelles with membranous membranes and active hydrolytic (digestive) enzymes. Lysosomes are huge and plentiful in phagocytes, the cells that eliminate invasive germs and cell debris, as one might expect. Nearly all types of biological compounds can be broken down by lysosomal enzymes. They are known as acid hydrolases because they function best in acidic environments. In two crucial ways, the lysosomal membrane has been modified to support lysosomal activities. In order to maintain the acidic pH of the organelle, it first has H+ (proton) "pumps," which are ATPases that collect hydrogen ions from the surrounding cytoplasm. Second, it keeps the harmful lysosomal enzymes (acid hydrolases) while allowing the digestive end products to escape so that the cell may utilise them or excrete them. Thus, lysosomes offer locations within a cell where digestion may happen safely.

Lysosomes serve as the "demolition crew" of a cell by:

The lysosomal membrane is typically relatively stable, but when the cell is harmed, is oxygenated insufficiently, or has an excessive quantity of vitamin A present, it becomes brittle. Autolysis is the process by which lysosomes burst, causing the cell to devour itself.

(A.) Lysosome

Have a great day and hydrate! <3

The accessory expiratory muscles that assist in active exhalations are

Rectus abdominis at the front of the pelvis, hanging between the ribs and the pubic bone.

One of the most important abdominal muscles, the external oblique muscle wraps around and descends to the pelvis from the lower half of the ribs.

On the outside of the abdomen, there is a muscle called the internal abdominal oblique.

In the internal oblique muscle's near vicinity in the abdomen is the transverse abdominis.

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