Both students have a good understanding of the concept of ions and the octet rule. Student A is correct in noting that sodium atoms tend to form negative ions by gaining an electron to achieve a full valence shell of eight electrons.
This is because sodium has just one electron in its valence shell, which makes it highly reactive and unstable. In order to achieve stability, sodium atoms will tend to gain an electron to form a negative ion with a full valence shell, which is more energetically favorable.
Student B is also partially correct in that sodium atoms can become positive ions by losing an electron. This occurs in certain chemical reactions where sodium atoms interact with other elements and form cations (positively charged ions).
However, it is less common for sodium atoms to form positive ions because sodium has a high electron affinity, which means that it is more likely to gain an electron than to lose one.
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Which of the following statements is true about photosynthesis?Photosynthesis uses water and carbon dioxide to produce glucose and oxygen.Photosynthesis uses oxygen and water to produce glucose and carbon dioxide.Photosynthesis uses carbon dioxide and oxygen to produce glucose and water.Photosynthesis uses glucose and water to produce carbon dioxide and oxygen.
The following statement is true about photosynthesis: Photosynthesis uses water and carbon dioxide to produce glucose and oxygen.
What is meant by the term photosynthesis?During photosynthesis, plants and other photosynthetic organisms use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. This can be summarized by the following chemical equation: 6 CO2 + 6 H2O + energy (from sunlight) → C6H12O6 (glucose) + 6 O2
A process used by plants and other organisms to convert light energy into chemical energy that, then through cellular respiration, can later be released to fuel organism's activities is called Photosynthesis.
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which layer of the dermis is irregular connective tissue?
The superficial layer, which lies deep to the epidermis, is the papillary dermis. The papillary dermis is made up of highly vascularized, loose connective tissue.
Is the connective tissue of the dermis irregular?Here is an illustration of dense, erratic connective tissue. It is the dermis, the layer of skin that lies beneath the epidermis. It has fibroblasts and collagen fibres.
What layer of the dermis contains dense, erratic connective tissue?The papillary layer (PD), which is primarily made up of loose connective tissue, contrasts with the reticular layer (RD), which is composed of thick irregular connective tissue (note the difference in the number of cells).
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Trace the flow of blood from the aortic arch to the right atrium passing through a capillary bed in the right deep palm.
The pulmοnary capillary bed lies between the right Remaining volume goes intο ventricle. SYSTOLE blοod flow through the left coronary arteries.
What is a pulmοnary problem?(PULM-uh-NAYR-ee dih-ZEEZ) a condition that affects the lungs and other respiratοry system οrgans. Infections, tobacco use, second-hand smoke inhalation, radon expοsure, asbestos exposure, and other types of air pοllution can all lead to pulmonary diseases.
Can pulmοnary get better?Depending οn how severe the condition is and how it is treated, recovery frοm pulmonary embolism can vary. For instance, you might recover quickly if NYU Langοne doctors have only prescribed medication for your condition. But fοr those who underwent open surgery, it might take months fοr them to feel strong again.
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What is the function of fruit in flowering plants?
The function of fruit in flowering plants is to protect and disperse the seeds. After fertilization occurs and the ovary of the flower develops into a fruit, the seeds are protected inside the fruit.
The fruit provides a protective covering around the seeds, shielding them from damage or being eaten by animals.
The fruit also plays an important role in seed dispersal. Once the fruit is ripe, it can be carried away from the parent plant by wind, water, or animals. The fruit often has adaptations that help it to be carried to new locations, such as hooks or spines that attach to the fur of animals, or fleshy pulp that is attractive to birds or other animals.
Once the fruit has been transported to a new location, the seeds can germinate and grow into new plants. The ability to disperse seeds over a wide area helps flowering plants colonize new habitats and increase their chances of survival. Therefore, the function of fruit in flowering plants is critical for the reproductive success of these plants.
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What organs are involved in a salpingo-oophorectomy?
A total hysterectomy with salpingo-oophorectomy involves either (a) removing the uterus along with one (unilateral) ovary and fallopian tube, or (b) removing the uterus along with both (bilateral) ovaries and fallopian tubes.
Irregular wound drainage. severe stomach discomfort a lot of vaginal bleeding. chest discomfort, breathlessness, or fainting, which are signs of a heart attack. If you experience symptoms like pain or discomfort from ovarian tumors or cysts, a salpingo-oophorectomy can be required.
In the event that you have a high chance of developing ovarian cancer or certain types of breast cancer, your surgeon might also advise a prophylactic salpingo-oophorectomy. Aftercare. Salpingo-oophorectomy is a complex procedure that, if carried out through the abdomen, takes three to six weeks to recuperate fully from. The recuperation period, however, can be considerably shortened if done laparoscopically.
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can a girl get pregnant if sperm is on the outside?
No, girl can not get pregnant if sperm is on the outside
Can an airborne sperm pregnancy be caused?is quite improbable. Sperm that are exposed to air lose their ability to swim and have an extremely short lifespan of a few hours. It is impossible to become pregnant by wearing or handling clothing that has dry semen.
What makes you sure that you cannot become pregnant?Lack of pregnancy is the main sign of infertility. There might not be any more overt symptoms. Occasionally, infertile women may experience irregular or nonexistent menstrual cycles. Male infertility patients often exhibit symptoms of hormone imbalances, such as changes in hair growth or sex patterns.
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in a certain population of mice, the frequency of the brown fur allele is 0.4 and the frequency of the black fur allele is 0.6. in 10 generation, the frequency of the brown fur allele drops to 0.3. what has happened in this population?
In this population, the frequency of the black fur allele has increased from 0.6 to 0.7, while the frequency of the brown fur allele has decreased from 0.4 to 0.3.
What exactly do you mean by allele?
An allele is basically a variant form of a gene. It is one of two or more versions of a gene that can occur at a particular location on a chromosome. Alleles can be either dominant or recessive, and they determine the genetic characteristics of an organism. Different alleles can produce variations in the physical traits of an organism, such as eye colour, hair colour, and height.
This suggests that the black fur allele is more likely to be passed on to the next generation than the brown fur allele, resulting in a shift in the allele frequencies over the 10 generations.
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What is the difference between a pterodactyl and a pteranodon?
The following is the distinction between Pteranodon and Pterodactyl: Pteranodons were Pterosaurs renowned for their lack of teeth and upward-projecting cranial crests on their skulls.
Pterodactyls, on the other hand, were smaller Pterosaurs with cone-shaped teeth and crests that protruded backward. While they are both members of the Pterosaur genus, they lived in distinct time periods. Pterodactyls lived during the Jurassic period, while Pteranodons lived during the Cretaceous period.
Pteranodons are likewise significantly larger than Pterodactyls and lack teeth in comparison to Pterodactyl teeth. They are not dinosaurs because they flew and had front limbs that stretched out to the sides. They're actually a distant dinosaur cousin.
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Is an artery considered an organ?
No, an artery is not considered an organ. An organ is a group of tissues that work together to perform a specific function. Examples of organs include the heart, lungs, liver, and kidneys.
An artery, on the other hand, is a type of blood vessel that carries oxygen-rich blood away from the heart to the rest of the body. Arteries are an important part of the circulatory system, but they are not considered organs because they are not made up of multiple types of tissues working together.
Arteries are a type of blood vessel that carry oxygenated blood away from the heart to the body's tissues and organs. They are thick-walled and muscular, which allows them to withstand the high pressure of blood flow that comes from the heart.
There are many different arteries in the body, such as the carotid arteries in the neck, the femoral arteries in the thigh, and the coronary arteries in the heart.
While arteries are not organs, they are essential components of the circulatory system, which is made up of the heart, blood vessels, and blood.
The circulatory system is responsible for transporting blood throughout the body, delivering oxygen and nutrients to the body's tissues and organs, and removing waste products. Arteries play a critical role in this process, as they are responsible for carrying oxygen-rich blood to the body's tissues and organs.
In summary, while arteries are an important part of the body, they are not classified as organs.
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somebody please help will mark brainliest
1) The chlorophyll is excited by light
2) Water is split
3) Oxygen is released into the environment
4) Carbon dioxide is taken in from the environment
What is photosynthesis?Photosynthesis is the process by which green plants and some other organisms use light energy from the sun to synthesize food. The process converts light energy into chemical energy in the form of glucose or other organic compounds.
The basic equation for photosynthesis is:
6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2
where CO2 is carbon dioxide, H2O is water, light energy is from the sun, C6H12O6 is glucose (or other organic compounds), and O2 is oxygen.
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Asian citrus fruit similar to a knobbly grapefruit. Crossword Clue
Pomelos resemble grapefruit in appearance, with the same green-yellow, somewhat rough skin and round to pear-shaped shape, but they're much larger, with the smallest being the size of a cantaloupe.
Pomelos are among the oldest citrus fruits. Pomelo is a big citrus fruit native to Asia that is related to grapefruit. It has a teardrop form, green or yellow flesh, and a thick, pale rind. It has the potential to grow to the size of a cantaloupe or larger. Pomelo has a similar flavor to grapefruit, although it is sweeter. The pomelo (/pmlo, pm-/ POM-il-oh, PUM-; Citrus maxima) is the largest citrus fruit in the Rutaceae family and the grapefruit's main ancestor. It is a non-hybrid citrus fruit that is native to Southeast Asia.
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biologists often use the term energy source as a synonym for electron donor. why?a.) An electron donor provides light required for photocatalytic process.
b.) An electron donor provides the potential energy required to produce ATP.
c.) An electron donor while donating lone pair of electrons provides heat which is a type of energy required for many process to procced.
d.) An electron donor provides the kinetic energy required to produce ATP.
Biologists often use the term energy source as a synonym for electron donor because electron donor provides the potential energy required to produce ATP. Therefore, option a is correct.
Biologists often refer to energy sources as "electron donors" since they generate the energy required for the photocatalytic process. An electron donor provides the potential energy required for ATP synthesis. According to the literature, the remarkable metabolic diversity of bacteria and archaea is what enables the vast ecological diversity that both groups of species exhibit.
The photosynthetic bacterium cannot use water as an electron source or for photosynthesis. Instead, they utilise any of the several reduced sulfur or carbon compounds as reductant sources. Oxygen is the final electron acceptor in glycolysis.
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A homozygous dominant round seeded plant is crossed with a homozygous recessive wrinkled seeded plant. What are the genotypes of the parents?.
Since the homozygous dominant plant has two copies of the dominant allele, it must be "RR" (round), while the homozygous recessive plant must be "rr" (wrinkled), as it has two copies of the recessive allele.
Therefore, the genotype of the homozygous dominant round seeded plant is "RR", and the genotype of the homozygous recessive wrinkled seeded plant is "rr". This is important to know when predicting the outcome of their offspring, which will depend on the type of inheritance pattern that governs the trait in question.
In this case, we would expect all of the F1 offspring to be heterozygous "Rr" (round), as they inherit one copy of the dominant allele from the dominant parent and one copy of the recessive allele from the recessive parent.
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Consider the following situations, and determine when a simple stain could be used instead of a Gram stain.a.) An unknown species of bacteria is being characterized and identified.b.) A wound specimen is being examined.c.) A microbiologist is trying to determine whether a specimen contains bacteria or fungi.d.) A specimen is suspected to contain multiple species of bacteria.
Option ( C ) .Microbiologists try to determine whether a sample contains bacteria or fungi.
What do microbiologists do?
Microbiologists study the microorganisms in such as bacteria, viruses, algae, fungi, and some types of parasites. They seek to understand how these organisms live, grow, and interact with their environment.
Can you afford microbiology?
A degree in microbiology therefore opens up opportunities in a variety of settings, including universities, hospitals, medical institutions, forensic laboratories, environmental agencies, publicly funded research institutions, pharmaceuticals, food and pharmaceuticals.
Do Microbiologists Become Doctors?
If you have a degree in Microbiology, you must have a DMLT (Diploma in Medical Laboratory Technology), take an entrance exam, and be called a physician after the M.D. program.
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Which lab procedure is the best to use to determine whether a newly discovered single-celled organism is prokaryotic or eukaryotic?
Utilize transmission electron microscopy to look for vesicles structures within the cell.
Which of the above is not present in bacterial cells but is present in eukaryotic cells?Only eukaryotic cells contain the mitochondria, a cytoplasmic membrane-bound organelle. Mitochondria are not present in prokaryotic, which include bacterial strains.
What is the endosymbiotic theory's methodology?According to the endosymbiotic idea, a few eukaryotic cells' organelles were previously prokaryotic microorganisms. Chloroplasts and mitochondria are identical in size to prokaryotic and divide by cytokinesis. The DNA in mitochondria and chloroplasts is circular rather than linear.
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for each species calculate the percentage of each nitrogenous base. the 1-2 sentences explain how these bases are typically paired off. in addition to this explain how dna structure helps genetic information be passed down to the next generation
The percentage of the nitrogen bases is obtained from Chargaff's rule which states that in a DNA molecule A = T and G = C and A + G + C + T = 100%.
In the DNA molecule, A is paired to T while G is paired to C.
The structure of the DNA molecule helps to pass genetic information down generations as the information stored can be accuratele copied and stored within each cell.
What is the structure of the DNA?Adenine (A), thymine (T), cytosine (C), and guanine (G) are the four nitrogen bases that make up the DNA molecule, and together they constitute a nucleotide. While C and T are pyrimidines, A and G are purines. The two segments of DNA are oriented differently.
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a disorder that occurs more frequently in babies born to mothers over the age of 35 is?
When it comes to having a baby with Down-syndrome, older pregnant women who are 35 years or older are more likely than younger ones to do so.
Down syndrome patients may have physical characteristics and developmental difficulties as a result of the extra copy of chromosome 21. Though it is known that one extra chromosome causes Down-syndrome, no one is certain of the exact causes or the multiplicity of elements that contribute to its occurrence.
However, because there are so many more births among younger women, the majority of newborns with Down-syndrome are born to moms under the age of 35.
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how could a protein kinase signal transduction pathway that involves camp as a second messenger be turned off?
Protein kinase A is activated by cAMP's binding to it, enabling PKA to hydrolyse subsequent components and trigger a physiological response. Phosphodiesterases are enzymes that inhibit cAMP signaling,
What is the basic composition of enzymes?
Proteins called enzymes are made up of amino acids connected by one or more protein molecules. The fundamental structure of a polypeptide chain refers to this arrangement of amino acids. This in turn dictates the enzyme's three-dimensional structure, including the active site's shape.
What occurs when an enzyme loses its function?
We refer to an enzyme as "denatured" when it ceases to function. The following factors can have an impact on enzyme activity: Temperature - The reaction rate may be impacted by the temperature. The reaction will happen more quickly the greater the temperature.
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What is arrector pili muscle function ?
The arrector pili muscle is a tiny muscle attached to hair follicles. Its main function is to cause goosebumps by contracting the skin, making the hair stand on end. This is a reflexive response to cold temperatures, fear, or other strong emotions.
The arrector pili muscle function is to make the hair on the skin stand up when a person is cold or scared. This is commonly known as "goosebumps" or "piloerection".
The arrector pili muscle is a small, smooth muscle that is attached to the base of each hair follicle. When it contracts, it pulls on the hair follicle and causes the hair to stand upright.
This can help to trap heat and keep the body warm when it is cold. It can also make a person appear larger and more intimidating when they are scared or threatened, which may help to deter potential predators.
In summary, the main function of the arrector pili muscle is to make the hair stand up in response to cold or fear, which can help to regulate body temperature and provide protection.
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how does the presence of lactose affect the lac operon system in e. coli?
In E. coli, the lac operon system is a genetic regulatory system that controls the expression of genes involved in the metabolism of lactose. The system consists of three genes - lacZ, lacY, and lacA - that are involved in the breakdown of lactose into glucose and galactose.
The lac operon is regulated by a repressor protein called LacI, which binds to the operator region of the operon and prevents transcription of the genes.
In the presence of lactose, a small molecule called allolactose is produced, which binds to the LacI repressor protein and causes it to release from the operator region. This allows RNA polymerase to bind to the promoter region and transcribe the genes necessary for lactose metabolism.
Therefore, the presence of lactose activates the lac operon system by relieving the repression of the LacI repressor protein, leading to the transcription of the genes necessary for lactose metabolism.
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cells that engulf bacteria or cell debris within loose connective tissue are
Macrophages are specialized cells that absorb germs or cellular material within loose connective tissue. Macrophages are immune system cells that also remove cellular waste.
What does it mean to be immune?
In general usage, the word "immune" denotes "freedom from, exemption from, or protection from," and in popular medical usage, "resistance to a disease." When you are resistant to anything, it usually has no impact on you; an example of this may be the ability to be immune to an illness or criticism.
In terms of health, what does immune mean?
The immune system's defense mechanism against a contagious diseases in medicine. Innate, adapted, and passive immunity are the three categories. Barriers like mucous membranes and skin that prevent dangerous chemicals from reaching the body are part of innate immunity.
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What are remnants of osteons which have been almost completely recycled by osteoclast?
Osteoclasts have nearly entirely recycled the matrix components of these lamellae, which are the remains of osteons. expansion of the bone
What components make up bone?
A protein collagen forms the structure of bones, and calcium phosphate, a mineral, gives the framework strength and hardness. When other body parts require calcium, bones release some of the calcium they have stored into the blood.
Which four types of bones are there?
Long, short, flat, and irregular bones are the four main bone kinds. Long bones are defined as bones that are wider than they are long. They are made up of a long base and two large extremities. Although they may have a significant quantity of spongy at the tips or extremities, they are largely made of compact bone.
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Cells in the ________ system are sometimes named for their color, or the color they become when stained.
A. circulatory
B. immune
C. respiratory
D. nervous
Cells in the immune system are sometimes named for their color, or the color they become when stained.
The immune system is a complex network of cells, tissues, and organs that work together to defend the body against foreign invaders such as viruses, bacteria, and other pathogens. Immune cells are often classified based on their structure and function, and they are sometimes named for their color or the color they become when stained. For example, lymphocytes, a type of white blood cell that plays a key role in the immune system, can be divided into B cells and T cells based on the color they become when stained with certain dyes. B cells are named for their development in the bone marrow, and T cells are named for their development in the thymus gland. Other immune cells, such as macrophages and dendritic cells, are named for their morphology or function.
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percy julian was a synthetic organic chemist that successfully synthesized physostigmine. true or false?
Julian (1899-1975) first incorporated the medication physostigmine, beforehand just accessible from its regular source, the Calabar bean. The answer is true.
His spearheading research prompted the interaction that made physostigmine promptly accessible for the treatment of glaucoma.
Cortisone is a cortical chemical of the adrenal organ. In 1949 Julian fostered another combination for a connected substance (called "Substance S") likewise present in the adrenal cortex and contrasting from cortisone by just an oxygen molecule. From this substance, he had the option to incorporate both cortisone and hydrocortisone.
Julian got right to work, and by October 1949, his group had made a manufactured cortisone substitute, fundamentally more affordable but similarly as successful. Regular cortisone must be extricated from the adrenal organs of bulls and cost many dollars per drop; Julian's manufactured cortisone was just pennies per ounce.
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if the nitrogen-fixing bacteria were destroyed by a virus, the most likely result would be
If the nitrogen-fixing bacterium were destroyed by a virus, the most likely result would be option B: a decrease in nitrogen compounds available to organisms.
Because nitrogen is a vital component of life, nitrogen fixation uses ambient nitrogen to create a nitrogen molecule that may be readily ingested by the organism. The microbe, Azotobacter, is responsible for nitrogen fixation. As no more nitrogen fixation occurs if these bacterium are eliminated, the amount of nitrogen compounds absorbed by the organism will decrease. Hence, option B is the right choice.
Nitrogen fixation is a natural or artificial process that causes free nitrogen (N2), present in large quantities in the atmosphere, to chemically interact with other elements present in the soil and generate more reactive nitrogen compounds like ammonia, nitrates, or nitrites. This occurs with the help of micro-organisms like Azotobacter.
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Complete question is:
If the nitrogen-fixing bacteria were destroyed by a virus, the most likely result would be
A. decrease in the nitrogen gas in the atmosphere
B. decrease in nitrogen compounds available to organisms
C. an increase in nitrates available for plants to use
D. an increase in nitrates from animal wastes
No one has found an actual dinosaur gizzard, but they
have found small piles of round rocks inside dinosaurs’ ribcages. Based on its function,
the gizzard is part of the _________________ system.
The stomach is explained as the mechanical stomach of a bird which is located just after the true or glandular stomach in the gastrointestinal system.
What is Gizzard?Gizzard is also defined as ventriculus, the gastric mill which is an organ found in the digestive tract of some animals, including archosaurs, earthworms, some gastropods, some fish, and some crustaceans.
Gizzard have many important functions, for example, reduction of particle size, chemical breakdown of nutrients and aid in digestion by regulation of feed flow, and respond rapidly to changes in dietary roughness.
Thus, the stomach is explained as the mechanical stomach of a bird which is located just after the true or glandular stomach in the gastrointestinal system.
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What is the strong supinator of the forearm?
The strong supinator of the forearm is the biceps brachii muscle. The biceps brachii muscle is a two-headed muscle located in the front of the upper arm that crosses the elbow and shoulder joints.
The long head of the biceps brachii muscle arises from the supraglenoid tubercle of the scapula and the short head arises from the coracoid process of the scapula.
The primary function of the biceps brachii muscle is to flex the elbow joint and supinate the forearm. When the muscle contracts, it pulls the radius bone of the forearm upward and outward, resulting in supination. Additionally, the biceps brachii muscle is also involved in shoulder flexion and abduction.
While the biceps brachii muscle is considered the primary supinator of the forearm, there are other muscles involved in this action, including the supinator muscle, which is located deep in the posterior compartment of the forearm.
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According to the phylogenetic tree in the figure above, G. intestinalis constitutes a ________ group.
A) analytic
B) monophyletic
C) polyphyletic
D) paraphyletic
According to the phylogenetic tree in the figure above, G. intestinalis
constitutes a D) paraphyletic group.
A monophyletic organization consists of an ancestor and all of its descendants. It is diagnosed through the presence of shared, precise characters (synapomorphies). Each phylogenetic tree incorporates as many monophyletic organizations as there are ancestors. A monophyletic organization of species stocks a unmarried not unusualplace ancestor and additionally consists of all the descendants of that not unusualplace ancestor. On a phylogenetic tree, a monophyletic organization consists of a node and all the descendants of that node, represented through each nodes and terminal taxa.
Thus, the correct option is D.
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Why do shelters and rescues try to match an animal’s personality with the family that they will go home with?
Answer:
To make the animal less stressed
Explanation:
(I don't know the answer for sure but this is my reasoning)
When an animal is adapting to its new environment, the adjustment period can stress them out (this is sometimes called the 3-3-3 rule or honeymoon period.)
But If the families personality matches, it can decrease the stress of an animal
Answer: They want to help the animals find a home, most animals that they find was either a stray Dog or Cat, or got lost. so they clean them and take good care of them then they will find them a home. Animals arrive at crowded shelters daily, i used to go by one to see all the new Dogs and Cats they save either as strays or owner surrenders. Most sit patiently in their kennels, day after day, wondering what they did wrong to end up there.
Explanation:
This is one of the recent Dogs they saved
the other picture they let me keep that one
aaron’s mother has multiple sclerosis. one of the features of this disease is the slowing down of nerve impulses. what part of the neuron could be affected by ms?
The little space that separates the postsynaptic cell from the presynaptic neuron.
What is contained in the postsynaptic cell?There are dozens of distinct proteins in the postsynaptic concentration of excitatory synapses, many of which are necessary for cognitive function and are associated with mental disorders. It is particularly dynamic and complex in composition and regulation.
Pre- and post-synaptic cells: what are they?An axon's presynaptic terminal is where the message impulses (the action potential) is changed into a signaling molecule (neurotransmitter release). Specialized receptors are present on the postsynaptic terminal membrane, which is only 50 nanometers away.
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