A single strand of DNA helix consists of 100 nitrogenous base pairs. On one strand, 36 of the bases are adenine and 24 are cytosine. For the complimentary strand of DNA, which would complete the proper base pairing?
36 guanine
36 thymine
24 cytosine
24 thymine
36 thymine is the answer :))
Two genes located on separate autosomes determine flower color and shape. the gene for flower color exhibits incomplete dominance, where the color can be red, pink (the heterozygote), or white. the gene for flower shape leads to personate (dominant) or peloric (recessive) flower shape. what are the p1 and f1 genotypes for this cross?
The color and shape of the flowers, as well as the height of the plant, are determined by two gene pairs on different autosomes. The color of the first pair can be red, pink (the heterozygote), or white, and there is partial dominance present.
What are the result of incomplete dominance?The dominant or recessive peloric flower shape results from the second pair of genes, whilst the dominant tall trait or the recessive dwarf phenotype is produced by the third gene pair.
The phenotype of a heterozygous dominant person is a combination of dominant and recessive traits when none of the elements of a gene are dominant. We bring up to this as incomplete dominance.
Therefore, White, peloric, and dwarf homozygous plants are crossed with red, personate, and tall homozygous plants.
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An animal with a saturated fatty acid to polyunsaturated fatty acid ratio of _______ will have the best hibernation performance.
The answer is less than 1:5, but the typical western diet is now between 1:20 and 1:50. When a fatty acid is described as being saturated, it means that it contains only single bonds between its carbon atoms, this means the source is high in saturated fats and intake should be limited and should be monitored.
What is the difference between a fossil with original preservation and an altered hard part
Answer:
Organic matter produced when an organism is alive remains unchanged in unaltered fossil while the opposite happens in cases of altered fossil
Explanation:
When the organic material produced by an organism during the time period when it was alive remains unchanged in the given course of time then it is termed as unaltered or original preservation. for example - bones, teeth etc, remain intact.
While in case if the organic material produced by an organism during the time period when it was alive changes in due course of time by the external forces is called as altered fossil
A pump is not used to raise groundwater to the surface in areas where artesian wells are located because the water in artesian wells is
Answer: Under high pressure
Explanation:
Artesian well is constructed whenever there is high pressure in the aquifer.An aquifer is defined as a geologic layer which has the ability to hold water.In artesian well, the ground water reaches to the surface on its own as the water in this area is under high pressure. Thus, we do not need a pump to bring up the water to the surface in such areas and the well that is constructed is the artesian well.The map shows an island arc in Alaska named the Aleutian Arc. What does the arc suggest about its surrounding geographic region?
*There is more than one answer*
Aristo was riding in a car and noticed a pond that was covered in algal blooms. Which of these other features in the landscape could be the reason for the high levels of phosphorus?
many cars
cow pasture
solar panels
forest
The algal blooms are a result of the increased levels of the phosphorus in the water. The largest source of the phosphorus in the water bodies is the runoff from the grasslands and pastures. The cow pasture near the pond that Aristo visited is the source of the phosphorus in the pond, which lead to the harmful algal blooms in the pond. The cow manure is rich in phosphorus, which runs off to the nearby water bodies.
Hence, the answer is 'cow pastures'.
What color changes did you observe when you added Sudan solution to water?
What determines the viscosity of magma? What else determines whether a volcano will erupt violently or calmly
AnswerThe two main factors that influence how a volcano will erupt are viscosity and gas content. Both are related to the composition of the magma. Hawaiian volcanoes tend to erupt basalt, which is low in viscosity and low in gas content (about 0.5 weight percent). The gas that is present can readily escape and little pressure builds up in the magma. At the other extreme, rhyolite magmas are very viscous and can contain a lot of gas (up to 7-8 weight present). As the magma moves into the vent and the pressure drops, the gas wants to escape. The magma is very sticky and resists the expansion of the gas bubbles. Ultimately, enough bubbles grow and expand to blow the magma into ash size fragments and eject them violently into the atmosphere.
The viscosity of magma is determined by its silica content. Basalt magma, on the one hand, which is often of low viscosity, has a low silica content of approximately 50% or less. Rhyolite magma, on the other hand, has high viscosity due to the high silica content of approximately 70% and more.
Gas content and temperatures of the magma are the other factors that determine an explosive or nonexplosive eruption. High temperatures and high gas content (coupled with high viscosity) cause violent explosions.
Final answer:
The viscosity of magma is influenced by its composition. Low silica magma has low viscosity, while high silica magma has high viscosity. Gas content also plays a role, with low gas content leading to calm eruptions and high gas content leading to violent eruptions.
Explanation:
The viscosity of magma is influenced by its composition. Magma with a low silica content, such as basalt, has low viscosity, meaning it is more fluid and flows easily. On the other hand, magma with a high silica content, such as rhyolite, has high viscosity, meaning it is sticky and doesn't flow easily.
Another factor that determines how a volcano will erupt is the gas content of the magma. Basaltic magmas typically have low gas content, allowing the gas to escape easily and resulting in calm eruptions. In contrast, rhyolitic magmas can have high gas content, and the sticky magma resists the expansion of gas bubbles, leading to violent eruptions.
The nitrogen removed from an amino acid generates ammonia, which is converted to ________ and excreted in the urine
Ammonia, produced from the deamination of amino acids, is highly toxic and is converted into urea in the liver. Urea is then excreted in the urine by mammals, including humans, as part of the urea cycle to maintain nitrogen balance and prevent toxicity.
Explanation:The nitrogen removed from an amino acid generates ammonia, which is then converted to urea and excreted in the urine. When proteins are broken down into amino acids, they undergo deamination, where the nitrogen-containing amino groups are removed and form ammonia (NH3), which is converted into the less toxic compound, urea, primarily in the liver. This process is vital for detoxifying ammonia, and the urea produced is then excreted by the kidneys. Mammals, including humans, excrete primarily urea, with small amounts of ammonium ion (NH4+), through urine. This urea formation and excretion is part of the urea cycle, an efficient system to remove nitrogenous wastes from the body, which is essential for maintaining the body's nitrogen balance and preventing the accumulation of toxic levels of ammonia.
The part of the brain that is known as the interpreter is the ________ hemisphere because it ________.
The answer is A. The left brain is also called the interpreter. This part of the brain processes information and endeavors to make sense/ rationalize the situation based on past experiences. This was discovered in the split-brain research by Roger Sperry in 1970s.
Match the following terms and definitions. 1. the part of the neuron that carries the cell's message away from the cell cell body 2. the part of the neuron that contains the nucleus and cytoplasm muscle fiber 3. point of skeletal muscle attachment on the body part the muscle moves synapse 4. a very long, contracting cell that makes up the muscles of our body phagocytosis 5. the process of a cell engulfing its food; literally, "cell eating" insertion 6. the junction between two nerve cells axon
Answer:
1. Axon refers to the section of the neuron, which conducts the message of the cell away from the cell body.
2. The cell body refers to the part of the neuron, which comprises the cytoplasm and the nucleus.
3. Insertion refers to the point of the attachment of the skeletal muscle on the part of the body where the movement of muscles takes place.
4. Muscle fiber refers to a very lengthy, contracting cell, which forms the muscles of the body.
5. Phagocytosis refers to the procedure in which a cell engulfs its food, also termed as cell eating.
6. The junction between the two nerve cells is termed as a synapse.
Lipogenesis is the breaking down of stored fat when blood glucose levels are low.
Which of the following are found in plant cells but not animal cells?
Plastids
Ribosomes
Chloroplasts
Vacuoles
An advantage of innate immunity is ________. an advantage of innate immunity is ________. the specificity of its individual cells which specialize in the removal on one type of antigen its barriers that prevent pathogens from entering into the body the use of antibodies to cause cell lysis and kill invading cells the numerous steps in the activation of its cells that can prevent autoimmune disease
Innate immunity is advantageous for its broad-spectrum defenses, such as physical and internal barriers, against pathogens. Adaptive immunity, which is more sophisticated, targets specific pathogens and uses antibodies to kill invading cells which can prevent autoimmune disease.
Explanation:An advantage of innate immunity is its barriers that prevent pathogens from entering into the body. Innate immunity, accompanied by adaptive immunity, works as the first line of defense against harmful microbes and substances. This system includes physical barriers like skin and mucous membranes, and internal defenses like inflammation and fever. It is not specific to any particular pathogen and does not have immune memory but forms a crucial part of the body's defense mechanism.
On the other hand, adaptive immunity has the specificity of its individual cells which specialize in the removal of one type of antigen and the use of antibodies to cause cell lysis, killing invading cells. The numerous steps in the activation of its cells can prevent autoimmune disease, effectively providing another form of immunity that complements innate immunity.
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What is the greatest risk to earths water supply?
The greatest risk to Earth's water supply is a combination of pollution, over-use, and limited availability. Pollution from various sources threatens water quality, while over-use and limited freshwater sources contribute to a limited supply. Uneven distribution of precipitation also leads to water shortages in certain areas.
Explanation:The greatest risk to Earth's water supply is a combination of factors including pollution, over-use, and limited availability. Pollution from agriculture, industry, cities, and mining threatens global water quality. Over-use and pollution of freshwater sources contribute to the limited supply of clean water that people depend on. Additionally, precipitation is unevenly distributed around the globe, leading to water shortages in arid climates and densely populated areas.
____ allow bacteria to join together to transfer genes.
How frequent is school-site violence? common. relatively rare?
The tree includes the most recent common ancestor of all living species of bears (branch point 1). what does this tell you about this phylogenetic tree? the tree includes the most recent common ancestor of all living species of bears (branch point 1). what does this tell you about this phylogenetic tree? this phylogenetic tree is rooted. the ursidae family is a paraphyletic group. the ursidae family is a polyphyletic group. this phylogenetic tree contains homoplasies.
Final answer:
The phylogenetic tree in question is rooted and represents all bear species tracing back to their common ancestor, making the Ursidae family a monophyletic group.
Explanation:
The inclusion of the most recent common ancestor of all living species of bears (branch point 1) in a phylogenetic tree suggests that this tree is rooted.
A rooted tree means there is a single ancestral taxon at its base, from which all organisms in the tree have descended. In the context of bears, since the tree includes the most recent common ancestor, it indicates that the tree represents all the bear species and traces back to their common origin.
Hence, the Ursidae family (family of bears) would be considered a monophyletic group, meaning that it includes an ancestor and all of its descendants, as opposed to being a paraphyletic or polyphyletic group.
A paraphyletic group includes a common ancestor and some but not all of its descendants, while a polyphyletic group does not include the most recent common ancestor of the included organisms.
During embryological development, the anus forms before the mouth in ___
Final answer:
In deuterostomes, the anus forms before the mouth during embryological development, with the blastopore becoming the anus and the mouth forming at the opposite end.
Explanation:
During embryological development, the anus forms before the mouth in deuterostomes. This group includes organisms such as chordates and echinoderms. The fate of the first opening in the early embryo, the blastopore, is what classifies an organism as a protostome or a deuterostome. In deuterostomes, the blastopore eventually becomes the anus, with the mouth forming at the opposite end, a process known as enterocoely. This contrasts with protostomes, where the blastopore develops into the mouth, and the body cavity forms by splitting the mesodermal mass in a process called schizocoely.
The distinction between these two forms of development is significant, reflecting broader differences in the embryogenesis of these organisms. Although there is ongoing debate and research on the specifics of mouth and anus formation in embryonic development, the general pattern of anus before mouth development in deuterostomes remains a key characteristic of these animals.
When discussing the sequence of clot dissolution, the science instructor will talk about which item that begins the process? a. dabigatran b. platelets c. plasminogen d. α2-plasmin inhibitor?
which of these descriptions correctly defines the term dna
Was the bone marrow yellow, red, green or blue?
What do ect, vagus nerve stimulation, and transcranial magnetic stimulation have in common?
Ect, vagus nerve stimulation, and transcranial magnetic stimulation are all techniques used to treat disorders related to the brain.
Explanation:Ect, vagus nerve stimulation, and transcranial magnetic stimulation (TMS) are all techniques used to treat certain disorders related to the brain.
Ect, or electroconvulsive therapy, involves using an electrical current to induce seizures in order to alleviate symptoms of severe depression. Vagus nerve stimulation involves the use of electrical impulses to stimulate the vagus nerve, which can help treat epilepsy and depression. Transcranial magnetic stimulation (TMS) uses magnetic fields to stimulate nerve cells in the brain and is used to improve symptoms of depression.
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The Chlorophyta are important _____. for providing oxygen to the atmosphere for depositing diatomic residues as a source of iodine
What are the effects of invasion of privacy?
The first one to answer get the brilliantest button
The invasion of privacy can lead to psychological distress, a loss of trust, and control over personal information, as well as potential blackmail or identity theft.
The invasion of privacy can have several far-reaching effects on individuals and society. The act of infringing on someone's personal space or accessing their confidential information without consent can lead to psychological distress, diminished trust in digital platforms, and a loss of control over personal information. Most notably, when privacy settings are compromised, private information can fall into the wrong hands, potentially leading to identity theft, blackmail, or even personal harm.
When it comes to the correlation between sharing information online and privacy, a significant concern is how much control users have over their data. More often, users may not be aware of the extent to which their information is tracked or shared. As social media platforms and websites collect personal data, they create privacy risks that can impact a person's current or future employment and even social relationships. This collection of personal information without clear consent or understanding from individuals raises concerns about the erosion of privacy rights online.
Jill runs a hot bath. she starts to get into the tub, but the water feels extremely hot. she stands in the hot water for a few moments, then slowly sits down, easing the rest of her body into the water. after a few minutes, she feels quite comfortable; the water no longer feels too hot to her. this decline in sensitivity to a constant stimulus is called:
A temperature 2 to 4 degrees lower than normal body temperature is critical for the production sperm. This temperature is maintained by what structure in the male's body ?
Final answer:
The scrotum is responsible for maintaining a temperature that is 2 to 4 degrees Celsius lower than normal body temperature, which is crucial for sperm production. It achieves this through muscle contractions that adjust the position of the testes relative to the body, ensuring a temperature conducive to spermatogenesis.
Explanation:
A structure called the scrotum is responsible for maintaining a temperature that is 2 to 4 degrees Celsius lower than the normal body temperature, which is critical for the production of sperm. The scrotum is a skin-covered, highly pigmented, muscular sac that extends from the body behind the reproductive organ. Its main function is to house the testes and maintain an optimal temperature for spermatogenesis, or sperm production, through the contraction and relaxation of its smooth muscles.
The scrotum regulates its internal temperature by responding to external temperature changes. When the internal temperature of the scrotum is too low, the smooth muscles within the scrotal wall contract to pull the testes closer to the body for warmth. Conversely, when it is too warm, the scrotum relaxes and allows the testes to hang further from the body, helping cool them down.
This mechanism is essential because sperm are immobile at higher temperatures and require a slightly cooler environment to remain viable and motile. Inability of the testes to maintain this cooler temperature can lead to infertility, as viable sperm production is compromised.
This temperature is maintained by scrotum structure in the male's body.
The temperature required for optimal sperm production in males is typically a few degrees lower than normal body temperature. This lower temperature is maintained by a specific structure in the male reproductive system known as the scrotum.
The scrotum is a pouch of skin and muscle located outside the body cavity, hanging below the pelvic region. Its primary function is to regulate the temperature of the testes, where sperm production (spermatogenesis) occurs. The lower temperature provided by the scrotum is crucial for the proper development and maturation of sperm cells. If the testes were located within the warmer environment of the body, sperm production could be adversely affected.
Antibiotic treatment of infection with the bacteria ______________ heals some stomach ulcers and prevents their recurrence.
e. coli helicobacter pylori salmonella clostridium botulinum
Process that leads to increased affinity of antibodies for a protein antigen as a humoral response progresses through somatic mutation of ig genes to selective survival of b cells is called
Answer: Affinity maturation
Affinity maturation is the process that leads to increased affinity of antibodies for a protein antigen as humoral response progresses. B cell maturation in the germinal center is a result of somatic mutation of immunoglobulin genes, which provide the molecular basis for the selective survival of B cells producing the highest affinity antibodies. These B cells are thought to have a competitive advantage when antigen becomes limiting in germinal centers.