TRUE/FALSE. The body is capable of producing all 20 amino acids it requires from fragments derived from carbohydrate and fat.

Answer:

Maria didn't put any sugar in her bread.

Explanation:

The bubbles are produced by the carbon dioxide, when yeast eats sugar it releases carbon dioxide and energy.

A single-celled organism that thrives in warm and moist foods is called yeast or Saccharomyces cerevisiae. They come under fungi and are unicellular eukaryotes.

The bread remained flat and did not raise cause there was no sugar present in the dough.

The yeast converts the sugar and starch molecules present in the food particles into alcohol and carbon dioxide.

In the above-stated case the absence of sugar did not produce the carbon dioxide that forms the air bubbles.

Therefore, the bread remained flat.

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Hardwired characteristics of the brain that attempt to keep us in balance by correcting deficiencies are referred to as homeostatic mechanisms.

Homeostasis is the body's ability to maintain a stable internal environment despite external changes.

In the context of the brain, homeostatic mechanisms involve various processes that regulate physiological functions and maintain optimal levels of essential substances.

These mechanisms can include feedback loops that detect imbalances and initiate corrective actions.

For example, if there is a deficiency in a particular nutrient or hormone, the brain may activate mechanisms to increase its production, decrease its consumption, or enhance its absorption from the environment.

Homeostatic mechanisms play a crucial role in ensuring the body's overall stability and functioning, helping to maintain proper levels of various substances and promoting overall well-being.

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The type of scientist best qualified to perform genetic engineering to produce more productive seeds in agriculture would be a molecular biologist, the correct option is C.

Molecular biologists specialize in studying the structure, function, and interactions of molecules within biological systems, including DNA and genes. Genetic engineering involves manipulating the genetic material of organisms, which requires a deep understanding of molecular biology principles.

Molecular biologists have the expertise to identify and isolate specific genes responsible for desired traits in crop plants, such as increased productivity or resistance to pests or diseases. They can then modify or introduce these genes into target plants to achieve the desired outcomes, the correct option is C.

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The example of sensitization from the given alternatives is that 'A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.'

Sensitization refers to the process in which an organism becomes more sensitive to stimuli, both good and bad. It happens when the body's nervous system becomes oversensitized to a particular stimulus that it begins to respond even to weaker or non-threatening stimuli.

The example given in the first option refers to a simple reflex action that occurs in response to the puff of air that is blown into the eyes during the eye examination. The third option is about sensory adaptation, which occurs when sensory receptors are exposed to stimuli for an extended period, resulting in a reduction in sensitivity. The fourth option refers to the fight or flight response that occurs as a result of a threatening stimulus, in which an individual's body prepares to confront or flee from danger.

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Its outputs will stop would be an intermediate effect of the final part of an assembly line system shutting down.

If the last component of the system failed, outputs, or the assembly-line product, would stop leaving the system. The inputs might go on for a long, at least. However, until all of the system's components are operating properly, outputs cannot be produced again, regardless of the number of inputs.

An assembly line splits the process of making a good into steps that are completed in a specified sequence. Assembly lines are the method used the most frequently in the mass production of commodities. They reduce labor expenses by teaching unskilled workers how to perform specific tasks.

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Answer:

The human skeleton is composed mainly of a substance called bone, and there are primarily four types of cells that make up bone. These are the osteoprogenitor cells, osteoblasts, osteoclasts and osteocytes. Their names all start with the prefix “osteo,“ which is the Greek word for "bone."

Explanation:

Answer:the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.

the plants and animals of a particular area.

"the biology of Chesapeake Bay"

the physiology, behavior, and other qualities of a particular organism or class of organisms.

"human biology"

Explanation:

Answer:

True

Explanation:

The conditions necessary for structural icing to occur are: Moisture, Freezing temperatures, Supercooled liquid water and Aerosols.

When supercooled liquid water, which is still liquid but below freezing, comes into touch with a solid surface, such an aeroplane wing or a propeller blade, it can cause structural icing. The following circumstances must be met for structural icing to happen:

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Some viruses contain both DNA and RNA as their genetic material is NOT true of viruses (option D).

A virus is a non-living entity that needs a suitable host to reproduce its genetic material (DNA or RNA).

Viruses may contain a genetic material composed of other DNA or RNA but not both.

In conclusion, some viruses contain both DNA and RNA as their genetic material is NOT true of viruses (option D).

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The statement is True. The nitrogenous bases of DNA (adenine, thymine, guanine, and cytosine) interact through hydrogen bonding to hold the two complementary strands of DNA together into a double helix.

Specifically, adenine (A) pairs with thymine (T) through two hydrogen bonds, and guanine (G) pairs with cytosine (C) through three hydrogen bonds. These base pairing rules, known as Watson-Crick base pairing, ensure that DNA is accurately replicated and inherited during cell division.

The Watson-Crick base pairing is a crucial aspect of strands of DNA and function. The base pairing rules ensure that the genetic information stored in DNA is accurately transmitted from one generation to the next. During DNA replication, the two complementary strands of DNA separate, and each strand serves as a template for synthesizing a new strand. The base

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The mollusk foot is an example of a homologous structure, as it is present in all mollusks but varies in form and function among different species living in different environments.

Homologous structures are organs or body parts that have a common evolutionary origin but may have different functions in different organisms. The presence of a foot in all mollusks indicates that it is a characteristic feature shared among the group. However, the foot's form and function can vary significantly based on the specific needs of different mollusk species in their respective environments.

For example, in marine snails, the foot is adapted for locomotion, allowing them to move across surfaces or even cling to vertical substrates. Bivalve mollusks, such as clams and mussels, also possess a foot, which is used for burrowing into sediment or anchoring themselves to rocks. Cephalopods, like squids and octopuses, have a highly modified foot in the form of tentacles or arms that are used for propulsion and capturing prey.

Despite these variations, the presence of a foot in all mollusks suggests a shared ancestry and a common evolutionary origin. The diversification of the foot structure among different mollusk species is a result of adaptive changes that have occurred over time in response to different ecological pressures and lifestyles.

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Answer:  A microscope is an instrument that produces a clear magnified image of an object viewed through it. A microscope must be able not only to magnify objects sufficiently but also to resolve, or separate, the fine details of the object that are of interest to the viewer. In the optical microscope visible light rays, reflected from or transmitted by the viewed object, pass through a series of lenses and form an enlarged image of the object. This image is produced at the normal distance of clearest vision, which is about 10 inches, or 25 centimetres, from the eye of the viewer.

The proportion of the children who would be expected to have the ability to taste PTC is 3/4 which means option B is correct.

When both the parents are heterozygous, then it means that the alleles present in them will be Tt, where T represents dominant allele which holds characteristic of tasting PTC and t represents recessive allele which does not hold ability of tasting PTC. When the parents' gametes are observed in Punnett square, there are three different genotypes obtained, which are namely TT, Tt and tt in the ratio of 1:2:1. This however means that three-fourth of the off-springs will have the ability to taste PTC, while one-fourth will not have this ability.

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Getting Shigella on your hands and touching your mouth. Shigella can get on your hands by touching surfaces, such as toys, bathroom fixtures, changing tables, and diaper pails contaminated with Shigella bacteria from someone with an infection.

Bacteria are the microorganisms that are single celled and covered with hard covering and there are several types of bacteria such as blue green bacteria, gram positive bacteria, as well as gram negative bacteria and many more types as well as classification is found.

Quorum regulation of luminescence in vibrio fischeri serves a native role in microbial quorum sensing and responds to quorum signaling molecule. Pneumococcal, meningococcal, and Haemophilus influenzae vaccinations are administered to the patients after splenectomy.

In the process of immunization a vaccine is given to the person in order to protect them against disease and to boost up the immunity.

Therefore, Getting Shigella on your hands and touching your mouth. Shigella can get on your hands by touching surfaces, such as toys, bathroom fixtures, changing tables, and diaper pails contaminated with Shigella bacteria from someone with an infection.

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Bacteria in the Shigella genus cause the disease shigellosis. The symptoms of shigellosis include diarrhea, fever, and intestinal cramping. The disease is unpleasant, but most people recover within a week. Shigellosis is transmitted from one person to another through bodily wastes.

You can catch shigellosis from a baby when changing its diaper. People also catch the disease by drinking contaminated water. The best way to avoid shigellosis is through frequent hand-washing with soap. Shigella bacteria can survive on a fly's body for up to 24 days. Suppose that a fly lands on waste from an infected person. That fly could then spread bacteria on everything it lands on for almost a month! Bacteria survive for so long during harsh conditions until finding a host because they have adapted to living in extreme environments.

Some bacteria, for example, can form spores to withstand high temperatures or radiation exposure and other environmental stressors. The bacterial survival mechanism is by remaining dormant in a spore form until the suitable living conditions become available. The environment condition, for example, temperatures, nutrient availability, acidity or pH, and moisture levels can all play a part in bacterial survival.

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The probability of a male offspring having hemophilia is 0.5 or 50%.

The probability of a female offspring being a carrier of hemophilia is 0.5 or 50%.

Since the woman is a carrier of the hemophilia gene, she must have one normal X chromosome (X^N) and one hemophilia X chromosome (X^H). The man has two normal X chromosomes (X^NX^N).

The Punnett square for their cross would look like:

 | X^N    | X^H

--|--------|------

Y | X^NX^N | X^HY

--|--------|------

Y | X^NX^N | X^HY

The possible genotypes of their offspring are X^NX^N, X^NX^H, and X^HY.

The male offspring will have hemophilia if he inherits the X^H chromosome from his mother. Since the mother is a carrier and has one X^H and one X^N chromosome, there is a 50% chance of passing on the X^H chromosome to her son.

The female offspring will be a carrier of hemophilia if she inherits one X^H chromosome from her mother. There is a 50% chance of the mother passing on the X^H chromosome to her daughter, and a 50% chance of the daughter inheriting the X^N chromosome from her father.

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Given what we know about Mendel and his experiments, we can confirm that the benefit of his using true breed parental plants was that it added accuracy and precision to his experiment.

The experiment mentions the use of true breed parental plants for each trait that was studied. A true breed or true-breeding organism is one that will ensure the inheritance of certain physical traits to its offspring through every generation. This is also commonly referred to as a purebred.

The importance of this detail in Mendel's experiments is that it functions as the control variable for the experiment. This is a variable that is maintained constant so that when a change occurs, we can attribute it to other factors and therefore add accuracy to the experiment. Therefore, by starting with purebred parental plants, Mendel could better identify the cause of inheritance for the traits.

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Among the given options, statement b. "The gametes are the haploid phase of the animal's life cycle" is true.

In the life cycle of animals, the gametes (sperm and egg cells) are the reproductive cells involved in sexual reproduction. Gametes are produced through a specialized cell division called meiosis, which reduces the chromosome number by half, resulting in haploid cells.

During sexual reproduction, haploid gametes from two parents combine to form a diploid zygote, which then develops into an organism. The zygote undergoes mitotic cell divisions, growing into a multicellular organism, and the diploid phase of the life cycle begins.

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The fossil evidence provides a evolutionary relationship between the catarhines.

Fossils are remains of dead plants and animals that have been preserved from the past and which provides information about life in the past.

Catarhines are monkeys known as Old World anthropoids or Old World monkeys.

Catarhines includes:

The fossil evidence provides a linkage between the catarhines.

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If nondisjunction occurs during meiosis I, then four (4) daughter cells will have an incorrect number of chromosomes after meiosis.

Non-disjunction refers to the faulty separation of chromosomes during cell division (either meiosis or mitosis).

Meiosis is a cell division that produces four daughter cells having half of the genetic material of the parental cell.

Non-disjunction in meiosis I is known to cause an imbalance in all daughter cells (i.e., in 4 daughter cells).

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Answer:

Lipids in the tonoplast provide a molecular environment for membrane proteins and serve as the barrier between the cytoplasm and the vacuole lumen.

Explanation:

An increase in precipitation and nearby factories directly affect soil pH, favoring the growth of mariflowers over noniflowers.

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A puppy has traits from its mother and father the structures which provide genetic information from the father to the puppy is the Sperm cell.

The male gamete or reproductive cell with one set of chromosomes is called sperm. In order to merge with the ovum and create a diploid zygote, it is discharged from the male reproductive organ into the female reproductive organ. The seminiferous tubules of the testes are where human sperm cells are made.

The sperm cells are the one which carries the genetic information of the father to the newborn as these fertilizes the egg and form zygote which eventually lead to the formation of the baby.

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That's incorrect. The baseline phase in single system design is conducted before the delivery of the intervention.

In single system design, also known as single case design, the baseline phase serves as a control period where the target behavior is observed and measured without any intervention or treatment being implemented. This baseline data provides a basis for comparison to evaluate the effects of the intervention during subsequent phases of the study.

Once the baseline phase is completed and baseline data is collected, the intervention phase follows, where the specific intervention or treatment is implemented. By comparing the data collected during the intervention phase to the baseline data, researchers can determine whether the intervention has had an impact on the target behavior.

It's important to establish a stable baseline before implementing any intervention to ensure accurate assessment of the intervention's effects.

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Answer:

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis

Explanation:

Answer:

when you try to stand or stretch your legs to relieve the discomfort.

Explanation:

n turn, the brain directs a response through the spinal cord, which sends impulses through the motor neurons. In turn, the motor neurons direct the muscles to execute the response. The end result is when you try to stand or stretch your legs to relieve the discomfort.

The body's different parts interact to stop the pain at the time when we try to stand or the legs should be stretched for relieving the discomfort.

The brain directs the response via the spinal cord that sends the impulses through the motor neurons.

And, then the motor neurons should direct the muscles for executing the response.

Therefore, try to stand or the legs should be stretched for relieving the discomfort.

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The process of protein synthesis involves the presence of ribosomes that provide the machinery for the t-RNA to read the codon on the m-RNA and attach the correct amino acid accordingly to the growing polypeptide chain. Transcription is the process where m-RNA is formed from the DNA and then further from m-RNA protein synthesis i.e., translation happens.

Ribosomes are the nucleoproteins. They are comprised of r-RNA and proteins. They have two subunits, one large and one small that join together at the time of protein synthesis.

t-RNA is also called the adaptor molecule in protein synthesis. It contains the anticodon at one terminal that recognizes the codon on m-RNA strand and therefore the appropriate amino acid is attached.

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