from the list of organ systems, select the ones that play a major role in homeostasis. (check all that apply.)

Answer:

A. It supplies oxygen to cells of the body

Explanation:

Respiratory is like your lungs and stuff that has you breath (I don't know how else to explain it)

btw can i please have brainliest

Answer:

[tex]A. \\ It \: supplies \: oxygen \: to \: cells \\ \: of \: the \: body.[/tex]

Development in animals proceeds through 4 main phases. These phases are the following:1. Fertilization 2. Cleavage3. Gastrulation4. Organogenesis.

Fertilization is the process by which a sperm cell fuses with an ovum to form a zygote. Cleavage is a series of rapid mitotic cell divisions that produce a large number of smaller cells known as blastomeres. The cytoplasm of the original zygote divides into progressively smaller cells until a solid ball of cells called a morula is formed. Gastrulation is the process by which the developing blastula undergoes a series of cell movements that transform it into a multilayered embryonic disc. During gastrulation, the blastula is reorganized into a three-layered embryo with a primitive gut that has an opening at both ends. Organogenesis is the process by which the three germ layers give rise to the various organs and organ systems of the body. Organogenesis is completed in two overlapping phases: embryonic development, which occurs during the first two months of development, and fetal development, which occurs from the third month until birth. During the development of animals, the differentiation process is also important. Differentiation is the process by which unspecialized embryonic cells become specialized, with different tissues and organs forming. The differentiation process begins after gastrulation, and it continues throughout development. Embryonic development is divided into four main phases. These four phases are as follows: fertilization, cleavage, gastrulation, and organogenesis.

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Poor sanitation increases the risk of a cholera outbreak because it allows the bacterium Vibrio cholerae to spread through contaminated water or food. Poor sanitation also increases the risk of disease transmission between individuals and other sources of the bacterium, such as animals and the environment.

Cholera is an acute infection of the digestive system. If infected individuals do not receive treatment, severe dehydration can result in death within hours of symptom onset, especially if the population is in an area with poor sanitation. The cholera bacteria are most commonly transmitted through water or food contaminated with fecal matter that contains the bacteria.

When the bacteria enter the small intestine, they produce a toxin that causes the cells lining the small intestine to release water, resulting in diarrhea. In areas with poor sanitation, there is a greater risk of water and food being contaminated with fecal matter that contains cholera bacteria. This makes it easier for the bacteria to spread from person to person and to infect large numbers of people, which can lead to an outbreak.

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All the individuals of certain species are counted in a large defined area to detect changes in abundance over time.This method is mark-and-recapture method.

The mark-and-recapture method, also known as the capture-recapture method, is a statistical technique for estimating the size of a population of organisms. In this method, individuals are captured, marked or tagged, and then released. Later, a second capture is done, and the number of marked and unmarked individuals captured are counted.

The data from the second capture is used to estimate the population size of the species being studied. This method assumes that the population is closed, meaning that no individuals are added or lost during the period of the study. The mark-and-recapture method is a useful tool in ecology for studying the size and dynamics of populations.

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Ingestion of mushrooms found growing in his garden, a man develops symptoms of oliguria, lethargy, and edema. many renal tubular epithelial (rte) cells are observed in his urinalysis. This is a case of: Mycetism.

Mycetism is the poisoning that occurs when toxic substances from certain mushrooms are ingested. Symptoms of mycetism may include oliguria (decreased urination), lethargy (extreme tiredness), and edema (swelling due to fluid buildup).

Urinalysis may reveal an increased number of renal tubular epithelial (RTE) cells, which are cells that line the inside of the kidney tubules. Treatment may involve supportive care, gastric lavage (stomach pumping), and/or antifungal drugs. It is important to recognize and avoid toxic mushrooms in the future to avoid this type of poisoning.

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Answer: The correct answer is option d) are highly resistant to heat, radiation, and chemicals.

Endospores are highly resistant structures produced by some bacteria in response to adverse environmental conditions. They are highly resistant to heat, radiation, and chemicals.

When the environmental conditions become favorable, they can germinate to form vegetative cells. Endospores are not a form of sexual reproduction.

They are not a dominant form of bacteria either. They are just a method of survival and adaptation to harsh environmental conditions. They are produced by a limited number of bacteria species such as Bacillus and Clostridium.


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Answer: C. Cannot reproduce by themselves.

Explanation:

Viruses cannot multiply on their own. They need a host to infect and when they infect the host, the use the host's cells to replicate.

One common mistake taxonomists may make when attempting to place seemingly closely related species into a shared classification group is to assume groups based on visual similarities.

One common mistake that taxonomists may make when attempting to classify species is the misapplication of similarity or shared characteristics.

For example, two species may look very similar and appear to be closely related, but they may in fact be quite different. This can lead to inaccurate classifications and incorrect taxonomic conclusions.

It is important to consider other factors when attempting to classify species, such as genetics, morphology, behavior, and ecology. While it is tempting to make assumptions based on visual similarities, taxonomists should make sure to thoroughly investigate the characteristics of a species in order to determine its proper classification.

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A transcription factor is a type of protein that binds to specific DNA sequences and controls the transcription of genetic information from DNA to mRNA.

Transcription factors ultimately determine which proteins will be present in a given cell by binding to specific DNA sequences in the genome and allowing or preventing the transcription of specific genes. When the transcription of a gene is allowed, the protein encoded by that gene is produced and is present in the cell. When the transcription of a gene is prevented, the protein encoded by that gene is not produced and is absent from the cell. In other words, transcription factors determine the presence or absence of a protein in a given cell by controlling the transcription of the gene that encodes that protein.

Transcription factors can also modify the expression of genes. By binding to DNA and influencing the expression of genes, transcription factors can determine the amount of protein present in a cell. They can also modify the structure of proteins by regulating post-translational modifications. Finally, transcription factors can influence the activity of a protein by influencing its interactions with other molecules.

In summary, transcription factors ultimately determine whether or not a protein will be present in a given cell by controlling the transcription of the gene that encodes that protein. They can also influence the amount and activity of the protein.

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Epeli Hauofa's paper outlines two main levels of operation: the micro level and the macro level. At the micro level, Hauofa examines the social, cultural, and political factors that shape Pacific Islander's identities and their experiences. He argues that despite their small size and limited resources, Pacific Islanders are capable of developing unique identities, autonomous practices, and their own ways of life.

At the macro level, Hauofa examines the global forces that have impacted Pacific Islanders. He argues that colonialism and the imposition of Western ideals and practices have limited their freedom and autonomy. He emphasizes that Pacific Islanders have faced colonization, imperial exploitation, and assimilation. In order to combat these issues, he argues for solidarity among Pacific Islanders and the recognition of their unique identities.

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Transurethral does not mean behind the urethra or posterior to the urethra. So the statement is false.

Transurethral refers to a technique in which an instrument is inserted into the body through the urethra, which is the canal through which urine is excreted from the bladder. Transurethral resection of the prostate (TURP), transurethral resection of bladder tumor (TURBT), and transurethral needle ablation (TUNA) are all examples of transurethral techniques used to treat medical conditions related to the urinary system. These treatments all involve inserting instruments through the urethra in order to reach the affected area.

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The face of a sunflower turning to follow the sun moving across the sky is an example of phototropism, which is a type of tropism exhibited by plants.

Phototropism is a type of tropism that occurs in plants. Tropism is a growth process in which the plant responds to environmental stimuli, such as light or gravity. Phototropism, on the other hand, refers to the plant's response to light.

As a result of phototropism, a plant's stem bends towards a light source, causing its leaves to receive more light. This occurs as a result of plant hormones like auxins, which help the plant respond to light.

When light strikes a plant's leaves, the hormone auxin causes the plant to grow towards the light, as opposed to away from it.

Plants, as living organisms, have a variety of characteristics that distinguish them from non-living things. They have the capacity to grow, reproduce, and respond to stimuli. They are made up of cells and require energy to survive, which they obtain via photosynthesis.

The majority of plants are capable of undergoing phototropism.

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Grass flowers are typically small, inconspicuous, and lack bright colors or strong scents because these features are not necessary for their method of pollination.

Grass plants typically have small, inconspicuous flowers that do not have bright colors or strong scents. This is because grasses are wind-pollinated, rather than insect-pollinated like many other flowering plants.

The small, simple flowers of grasses are adapted for wind pollination, which involves the transfer of pollen grains from the male part of the flower (the stamen) to the female part (the stigma) by the wind. In this mode of pollination, bright colors and strong scents are not necessary for attracting pollinators. Instead, grasses rely on producing large quantities of lightweight pollen that can be easily carried by the wind to reach other plants for fertilization.

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The fibrous protein that winds along the groove of the F-actin double helix and blocks the myosin-binding sites on the actin filaments is called tropomyosin.

Tropomyosin is a protein that is a type of fibrous protein. It is primarily found in muscle tissue and is involved in the contraction of muscles. It works by winding along the groove of the F-actin double helix, which helps to block the myosin-binding sites on the actin filaments.

F-actin double helix is a filamentous structure that is found in muscle tissue. It is composed of two types of proteins, actin, and myosin.

Actin is a globular protein that forms long, thin filaments, while myosin is a motor protein that moves along these filaments to generate the force required for muscle contraction.

A myosin-binding site is a region on the actin filament where myosin binds during muscle contraction. This interaction is crucial for the generation of force required for muscle contraction. By blocking the myosin-binding site on the actin filament, tropomyosin helps to regulate muscle contraction by preventing the binding of myosin.

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The correct option that exemplifies the contractility of muscle is Lifting a textbook.

:

Muscle contractility refers to the ability of a muscle to contract or shorten forcefully in response to a stimulus. Lifting a textbook involves the activation of skeletal muscle fibers, which contract and generate force to lift the object. The other options listed do not necessarily involve muscle contraction or the generation of force.

Passive lengthening of muscles occurs when external forces stretch the muscle, and the muscle lengthens without actively contracting. Waving at a friend involves a conscious decision to move the arm, but it does not necessarily involve forceful contraction of the muscles. The process of exhalation involves the relaxation of respiratory muscles and passive recoil of lung tissue, rather than active muscle contraction.

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Glaucoma can result from the inhibition of the circulation of aqueous humor. So the correct answer is D.

Glaucoma is a group of eye diseases that can damage the optic nerve and lead to vision loss or blindness. In most cases, glaucoma is caused by a buildup of pressure within the eye due to the accumulation of aqueous humor, a clear fluid that circulates through the anterior chamber of the eye. Aqueous humor is produced by the ciliary body and flows through the pupil to nourish the cornea, lens, and trabecular meshwork before draining out of the eye through the trabecular meshwork and Schlemm's canal. If the flow of aqueous humor is inhibited, the pressure within the eye can increase and lead to optic nerve damage and vision loss over time.

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Glial cells, or neuroglia, are cells that encompass the neurons of the focal sensory system inserted between them, giving both underlying and physiological support.

Oligodendrocytes: Forms the myelin sheath in the CNS.

Ependymal cells: Function in the production and circulation of CSF. Ciliated cells resembling epithelium.

Microglia: Macrophages of the CNS. Cells of the lymphatic system.

Astrocytes: Most abundant CNS glial cells. Involved with Neurogenesis, scar formation, BBB maintenance, etc.

Schwann cells: Forms the myelin sheath in the PNS. Function to insulate neurons and enhance the rate of transmission in the PNS.

Satellite cells: Surrounding and insulating cells of the PNS that are found around somas.

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the complete question:

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Behavioral ecologists use the comparative approach to answer questions about the evolution of behavior by exаmining nаturаl vаriаtion аre often аll thаt is аvаilаble.

Behаviorаl ecologists stаrt from the premise thаt nаturаl selection works on behаvior to mаximize fitness. They use 3 mаin аpproаches to test аdаptive hypotheses аbout the evolution of behаvior: experimentаtion, testing the predictions of theoreticаl models, аnd the compаrаtive method.

The compаrаtive method is аt the center of а complex view of biology, аccording to which orgаnisms аre seen аs historicаl products. This is а dynаmic view of nаture, where genotypes аnd phenotypes chаnge over evolutionаry time under the influence of nаturаl selection.

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Since seedless plants do not produce seeds, they do not undergo pollination as a reproductive process. Instead, seedless plants reproduce through other means, such as spores.

A process analogous to pollination in seedless plants is the transfer of spores from one individual to another. Spores are the reproductive structures in seedless plants that can develop into gametophytes, which produce gametes that then fuse to form a new sporophyte generation. In ferns, spores are produced on the underside of the leaves and are dispersed by wind or water to other locations where they can germinate and grow into new fern plants. This process of spore dispersal and germination can be seen as analogous to pollination in seed plants, as both involve the transfer of reproductive structures to enable fertilization and the development of new generations.

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Paracrine factors outside the cell can cause changes in gene expression inside the cell by regulating transcription factors, which in turn regulate transcription of genes.

Transcription is the process of synthesizing RNA with the template of the genes contained in the DNA strand that occurs in the nucleus.

Here are examples of paracrine factors outside the cell that can cause changes in gene expression. An example of a specific pathway is the NF-κB signaling pathway. NF-κB is activated by paracrine factors that bind to a receptor and form a complex with an IκB protein, which is then phosphorylated by an IκB kinase, causing IκB to be released and allowing NF-κB to translocate to the nucleus and bind to the promoters of genes that regulate inflammation and cell growth.

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The main difference between the barrier provided by the skin and the barriers provided by mucous membranes is that skin is an external barrier that provides physical and chemical protection to the body while mucous membranes are internal barriers that line the body's openings such as the respiratory, digestive, and reproductive tracts.

The skin is the largest organ in the body, and it has a variety of functions, including:

Protective function - it serves as a barrier that prevents harmful substances and pathogens from entering the body

Thermoregulation - it helps regulate body temperature

Sensory function - it contains receptors that detect touch, pressure, temperature, and pain

Metabolic function - it plays a role in vitamin D synthesis and the production of certain hormones

Mucous membranes are found in the body's openings such as the respiratory, digestive, and reproductive tracts. They have a variety of functions, including:

Protection - they prevent harmful substances and pathogens from entering the body

Lubrication - they secrete mucus that lubricates and protects the surface of the membrane, preventing it from drying out and getting damaged

Absorption - they can absorb nutrients from food in the digestive tract

Secretion - they can secrete enzymes and other substances needed for digestion and other processes

Immune function - they contain immune cells that help defend the body against pathogens and other harmful substances

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The types of papillae on the tongue that contain taste buds are fungiform and vallate papillae.

Fungiform papillae are small, mushroom-shaped papillae that are scattered throughout the tongue, with the highest concentration on the tip and sides of the tongue.

What is Papillae?

There are several types of papillae on the tongue, including fungiform, vallate, foliate, and filiform papillae. Fungiform and vallate papillae are the two types that contain taste buds, while filiform papillae are responsible for detecting texture and temperature. Foliate papillae, located on the sides of the tongue, are less numerous and also contain taste buds.

Vallate papillae, also known as circumvallate papillae, are large papillae located at the back of the tongue. They are arranged in a "V" shape and are surrounded by a trench-like groove. Each vallate papilla contains hundreds of taste buds.

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Last option .The main function of the crispr-cas9 system is to alter the nucleotide sequences of specific genes in a living cell.

The CRISPR-Cas9 system is a powerful and versatile genetic tool that allows scientists to edit DNA with unprecedented precision. CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats, which are a specific type of DNA sequence found in bacteria and other organisms.

The Cas9 enzyme is a protein that can be programmed to target specific DNA sequences within a genome. By guiding Cas9 to a particular location within the genome using a small RNA molecule, scientists can cut the DNA at that location and introduce specific changes to the genetic code.

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True. The German cockroach (Blattella germanica) is closely related to the American cockroach (Periplaneta americana).

The German cockroach is a species of small insect that typically ranges from 4-10 mm in length. It has a light tan or brown color with two dark parallel lines that run along its back. The American cockroach is much larger than the German cockroach, reaching lengths of up to 50 mm. It is reddish-brown and is more closely related to the desert cockroach (Periplaneta australasiae).

The desert cockroach is found in dry desert environments and is typically a reddish-brown to yellow-brown color. It has an average length of 25 mm.  Both the German cockroach and the American cockroach belong to the same family of insects, Blattellidae, while the desert cockroach belongs to the family Ectobiidae. Therefore, it is true that the German cockroach is more closely related to the American cockroach than it is to the desert cockroach.

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Answer: The structures indicated by the arrows in the picture that have pinched off the Golgi apparatus and will deliver their contents to another part of the cell are called transport vesicles.

What is the Golgi apparatus?

The Golgi apparatus is a stack of flattened vesicles and sacs, commonly known as a stack of pancakes, that serves as a central processing station for cellular proteins and lipids.

The proteins and lipids are primarily obtained from the endoplasmic reticulum (ER) and later dispersed to their destination sites within the cell. The Golgi body accepts proteins and lipids from the rough ER, processes them into a functional form, and then dispatches them to the right place in the cell.

It is the transport vesicles that carry the processed proteins and lipids from the Golgi body to the correct location. After it arrives at its destination, the vesicle merges with the membrane and discharges its contents.



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An electrical impulse travels deep into a skeletal muscle fiber in order to trigger a contraction through a process known as depolarization.

Depolarization is the process by which an electrical signal, typically a nerve signal, enters the muscle fiber and causes an ion exchange in the muscle cell membrane. This ion exchange leads to a local change in the membrane potential, making it more positive and allowing it to reach the threshold potential, which is the minimum potential needed for an action potential to occur.

When this threshold potential is reached, the action potential is propagated along the muscle fiber, resulting in muscle fiber contraction.

The depolarization process starts when the nerve signal arrives at the neuromuscular junction, also known as the motor end plate. Here, neurotransmitters, such as acetylcholine, are released from the motor neuron and bind to the postsynaptic membrane of the muscle fiber.

This binding leads to the opening of voltage-gated calcium channels, which allow the influx of calcium ions into the muscle fiber.

The influx of calcium ions leads to the opening of voltage-gated sodium channels, allowing sodium ions to enter the muscle fiber. This sodium influx causes a further depolarization of the membrane, and if the threshold potential is reached, an action potential is propagated along the muscle fiber, causing contraction.

In summary, an electrical impulse travels deep into a skeletal muscle fiber in order to trigger a contraction through a process of depolarization which starts at the neuromuscular junction, when neurotransmitters bind to the postsynaptic membrane.

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The correct transcription of the DNA strand TAC CAT ACT is AUG GUA UGA.

The given mRNA strand AUGGUAUUGA is a correct translation of the DNA sequence TAC CAT ACT.

The mRNA sequence AUGGUAUUGA is a substitution mutation

DNA insertion is a type of genetic mutation that occurs when one or more nucleotides are added to a DNA sequence. This results in a longer DNA sequence than the original, and can potentially alter the function of the gene or the organism's phenotype.

The mRNA sequence AUGGUAUUGA is a substitution mutation in which the nucleotide "A" in the seventh position is replaced by "U," resulting in the coding for a different amino acid.

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The statement "organisms that are classified as consumers capture their energy directly from the sun" is  False. Consumers are organisms that cannot produce their own food and must obtain energy from other sources.

Consumers capture energy from the sun indirectly, by consuming organisms (like plants or other animals) that have already captured the energy from the sun.

Plants, for example, capture energy from the sun through photosynthesis and use it to produce glucose. This glucose is then passed up the food chain to the consumer. Consumers obtain their energy from the organisms they consume, not directly from the sun.

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For movement and sensing, tube feet are used.

In addition to aiding in movement, tube feet are utilised by urchins to grab food and are a component of their respiratory system. Sea urchin that goes past the spines. The tube feet have respiratory and sensory functions on the top side of the body, close to the anus.

As water is injected into the tube feet, they are thin tubes that stretch. The starfish's epidermis has a sieve plate that allows water to enter, and its muscles force water into each tube foot. The chamber of the tube foot is filled with water during its entire length.

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When an end product from an enzyme-mediated sequence is also an inhibitor for an earlier step in the reaction sequence, the process is referred to as feedback control.

Feedback control refers to the control of a reaction by its products, where the product of the reaction regulates the rate at which the reaction proceeds. Feedback control is an important control mechanism in many biological systems.

The regulation of enzymes through feedback control occurs when the product of a reaction feeds back to regulate the enzyme that catalyzes the reaction. This is an essential mechanism for regulating metabolic pathways in cells, ensuring that the appropriate amount of product is produced for the cell's needs.

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