(a). is established based on genetic evidence. Whether modern humans and neandertals interbred at some point is established based on genetic evidence.
The question of whether modern humans and Neandertals interbred at some point is considered to be established based on genetic evidence. Studies of DNA from both modern humans and Neandertals have revealed that there was significant genetic exchange between the two groups at some point in the past. Specifically, the genetic data suggests that modern humans and Neandertals interbred around 50,000 years ago, when early human populations left Africa and encountered Neandertals in Europe and Asia. As a result, today's non-African populations carry an average of 1-4% Neandertal DNA. It is worth noting that the genetic evidence, including the discovery of Neandertal DNA in the genome of modern humans, is considered a strong evidence of interbreeding between the two groups, but not the only one.
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explain how the digestive system works. be sure use the terms physical digestion, chemical digestion, metabolism, nutrients, and molecules in your response.
Food is broken down into nutrients such as carbs, lipids, and proteins via the digestive system. They are then taken into the circulation and used by the body for energy, development, and repair.
Unused materials are disposed of like feces . Chemical digestion is the process of breaking down food bindings to transform them into organic molecules. The mechanical breakdown of food is known as physical digestion.
Ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and feces are the six acts involved in digestion. The first of these processes, ingestion, refers to the passage of food the mouth into the alimentary canal.
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the pharmacy has aminosyn 8.5% in stock. in order to prepare 150 gram of protein, how many ml of aminosyn will be needed from the stock solution
In order to prepare 150 grams of protein from 8.5% of stock solution of aminosyn stock, 1764.71 ml of of aminosyn will be required.
Aminosyn is a solution containing crystalline amino acids solution present along with electrolytes. If a stock solution has 8.5 % of aminosyn it indicates that 8.5 gm of amino acids are dissolved in the solution. Therefore to calculate the amount of protein formed from it, the formula used is:
Amount of solution required (in ml) × concentration of stock solution = Amounts of protein obtained (in gm)
According to the question,
Amount of solution required × (8.5 / 100) = 150 gm
Amount of solution required = (150 × 100) / 8.5 = 1764.71 ml
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what is the name of the theory which states that organisms are derived from the assembly and reorganization, somewhat de novo, of substances in the egg?
Epigenesis is the theory which states that organisms are derived from the assembly and reorganization, somewhat de novo, of substances in the egg.
The process through which organisms, including plants, animals, and fungi, evolve from a seed, spore, or egg through a number of phases during which cells divide and organs emerge is known as epigenesis (or, in contrast to preformationism, neoformationism). Aristotle coined the term "epigenetics" in his essay On the Generation of Animals. The historical rejection of epigenesis was hampered by creationist ideas of life's origins, despite the fact that it seems evident in the genetic era of today. However, a protracted and contentious dispute among biologists in the late 18th century led to the eventual replacement of the long-standing preformationist theory with epigenesis.
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a researcher claims that epinephrine signaling pathways controls a catabolic process in muscle cells. which of the following statements best helps justify the researchers claimanswer choicesepinephrine is a signaling molecule that binds to a transmembrane proteinthe G protein in the epinephrine signaling pathway consisst of three different subunitsphosphorylase kinase catalyzes the hydrolysis ATPglycogen phosphorylase catalyzes the conversion of glycogen to glucose-1-phosephate
Glycogen phosphorylase catalyzes the conversion of glycogen to glucose-1-phosphate the following statements best helps justify the researcher's claim.
The group of metabolic processes known as catabolism breaks down big molecules (such as polysaccharides, lipids, nucleic acids, and proteins) into smaller units that are either oxidized to liberate energy or utilized in other anabolic reactions (such as monosaccharides, fatty acids, nucleotides, and amino acids, respectively). The breakdown process in metabolism is called catabolism, and the synthesis process is called anabolism.The monomers that are produced when polymers are broken down are either used by cells to build new polymer molecules or are further broken down into simple waste products, which releases energy.
complete question:A researcher claims that the epinephrine signaling pathway controls a catabolic process in muscle cells. Which of the following statements best helps justify the researcher's claim?
a. Epinephrine is a signaling molecule that binds to a transmembrane protein.
b. The G protein in the epinephrine signaling pathway consists of three different subunits.
c. Phosphorylase kinase catalyzes the hydrolysis of ATP.
d. Glycogen phosphorylase catalyzes the conversion of glycogen to glucose-1-phosphate.
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The mitotic spindle consists of two types of microtubules: kinetochore microtubules and nonkinetochore microtubules. In animal cells, these two types of microtubules function differently in the stages of mitosis. Complete the sentences by dragging the terms to the appropriate locations. Terms may be used once, more than once, or not at all.
Answer:
Kinetochore microtubules attach to the kinetochore of the chromosomes and help to move them to opposite poles of the cell during the anaphase stage of mitosis. Nonkinetochore microtubules are involved in the formation of the spindle apparatus, which helps to line up the chromosomes in the metaphase stage of mitosis.
cyanobacteria have been genetically modified to produce isobutanol directly what advabtagebdoes this have
In contrast to other potential biofuels, isobutanol can be directly produced by cyanobacteria. As a result, multiple processing stages can be avoided.
Heterologous biosynthetic pathways are used to create cyanobacteria that use photosynthesis to manufacture valuable compounds. In successfully designed cyanobacteria, many compounds have been produced. Target biosynthesis pathway genes are expressed when certain chemical inducer-dependent promoters are activated.
2-ketoisovalerate and 2-ketoisocaproate, which are 2-keto acid precursors in the L-leucine and L-valine biosynthetic pathways, are converted into isobutanol and 3MB in cyanobacteria by KDC and ADH, respectively (See Picture). In order to produce isobutanol and 3MB in PCC 6803 under the influence of green light, we created the expression vector pKT-GSS-KDC-ADH, in which the CcaS/CcaR system was integrated to cause the expression of the kdc and adh genes detailed in the Methods section.
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deep-sea are composed almost entirely of the hard outer coverings of single-celled marine organisms. their chemical composition is either or .
Biogenous oozes; calcareous or siliceous , Any pelagic silt that contains more than 30% skeletal material is referred to as biogenic ooze. Carbonate (or calcareous) ooze or siliceous ooze can make up these deposits.
Calcareous ooze, the most abundant of all biogenous sediments, is formed by creatures with calcium-based shells (also known as tests), such as foraminifera, a kind of zooplankton.
The ocean strata are dominated by calcareous ooze. Foraminifera and other creatures with calcium-based shells are more plentiful and extensively dispersed throughout the world's ocean basins than animals with silica-based shells.
The oozes are classified as calcareous oozes (containing calcium carbonate skeletons) and siliceous oozes (containing silica skeletons), and then further classified based on the major skeleton type.
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Name the divisions (and sub-divisions) of the nervous system, with a brief description of function.
b) Pick an organism in the list above and describe how one of its structures allows it to survive in its environment. (1 point) Think about how one part of the organism's body is designed to do a specific job well.
Answer:B what is this question
Explanation:
please specify the list of organisms you are referring to. The answer to this question depends on the organism you choose.
upon fertilization, the egg and sperm fuse to form a single cell called a(n) ________.
A) zygote
B) gamete
C) embryo
D) gonad
Upon fertilization, the egg and sperm fuse to form a single cell called an A) zygote.
Fertilization and meiosis—the process of making haploid cells from diploid ones—are two key aspects of the life cycle that are shared by all species that reproduce sexually.
A zygote is formed when the sperm and eggs are combined during fertilization. With the help of mitosis, the zygote divides into a mature human. The first diploid cell that forms when male and female gametes fuse to form an embryo is called a zygote.
During the first week of fertilization, the zygote stage is formed.
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Which sea is the saltiest natural lake and is also at the lowest elevation on the face of the earth?
Answer:
Death Sea. Among the lakes in the globe, the Dead Sea is distinctive. With a salinity of 34%, it is the saltiest body of water in the whole globe.
Explanation:
Which are the answers ?? Help pls
Answer:
saassaa
Explanation:
true/false. (a) If a particular gene is located on the Z chromosome of this lizard species, describe why a lizard with a ZW genotype has a greater probability of expressing the recessive phenotype for the trait than a lizard with the ZZ genotype does.
If the dominant allele of a sister chromatids, which most often hides the recessive gene, is absent, the recessive trait will become evident. In this case, the gene resides on the Z chromosome.
What gender is the YY?The mother carries the XX chromosome, while the guy carries the XY chromosome. It is not possible for a human to inherit one Y chromosome from his mother and another from his father, which is required for a baby to be have two chromosomes as YY.
What does a chromosomal primarily accomplish?DNA may be precisely duplicated throughout these cell divisions thanks to chromosomes. I'll reiterate it. In our cells, chromosomes are found in the nucleus, where they enable exact information copying during cell division. This guarantees the efficient and proper operation of every internal system.
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With an appearance similar to granite this sample seems to have undergone a change where the ferro-magnesium minerals have separated from the silica rich minerals. This ion-migration has produce what appears to be a foliated texture.
This sample likely underwent a process known as metamorphism, in which heat and pressure cause the minerals in a rock to recrystallize and change.
Metamorphism is the process of change in the structure, mineralogy, texture, and chemical composition of rocks in the solid state, as a result of changes in temperature, pressure, and/or deformation. It occurs in the Earth's crust and upper mantle and can be caused by tectonic activity, such as the movement of tectonic plates, or by exposure to heat and fluids from intrusions of magma or hot fluids.
The specific process you described, where ferromagnesian minerals have separated from silica-rich minerals, is known as segregation. This can result in a foliated texture, where the minerals are aligned in parallel layers. This is often seen in metamorphic rocks such as schist and gneiss.
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which of the following is evidence that would support the claim that DNA has been transcribed into RNA
Answer:
a DNA sequence ACGGGTAAGG will be transcribed into the mRNA sequence UGCCCAUUCC.
Explanation:
what is the term given to an organism that becomes able to reproduce (accelerated reproductive development) before the body is an adult (somatic development).
Pedomorphosis is the term given to an organism that becomes able to reproduce before the body is an adult (somatic development).
Pedomorphosis, is the characteristic an organism that its juvenile or larval traits can appear later in the life. Pedomorphosis is an substitutive process to metamorphosis in which adults retain larval traits at the adult stage. This process is more common in newts and salamanders, where larvae influence s.e.x.ual maturity without losing their gills.
Pedomorphosis and neoteny represent two qualitatively different phenomena also known as neoteny is an adaptive modification of ontogeny, we can also say that pedomorphosis is its conversion in the course of evolution.
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What type of artificial selection is used when animals with desired characteristics are mated to produce offspring with those desired traits?
Selective breeding type of artificial selection is used when animals with desired characteristics are mated to produce offspring with those desired traits.
Selective breeding, also known as artificial selection, is the process by which humans use animal breeding and plant breeding to selectively develop specific phenotypic traits (characteristics) by deciding which typically animal or plant males and females will sexually reproduce and produce offspring together. Domesticated animals are known as breeds and are often bred by a professional breeder, whereas domesticated plants are known as variations, cultivars, or breeds. A crossbreed is created when two separate purebred animals of the same breed crossbreed, and hybrid plants result from this crossbreeding. Major crops are typically the result of professional breeding; amateurs and professionals alike may breed flowers, vegetables, and fruit trees.
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explain why heparin is used as an anticoagulant in the treatment of thrombotic strokes but contraindicated in a subarachnoid hemorrhage.
The most common cause of a stroke is a clot blocking a brain artery. Heparin would prevent new clots from forming. It is contraindicated in cases of subarachnoid hemorrhage because it is ineffective in treating bleeding from damaged arteries.
The majority of the contraindications to intravenous (IV) recombinant tissue plasminogen activator (rtPA) injection began as exclusion criteria in large stroke trials.
Expert consensus was used to develop these for the National Institute of Neurological Disorders and Stroke (NINDS) experiment. Despite the fact that the safety and efficacy of IV rtPA have been consistently established in major worldwide observational studies over the last 20 years, most patients with acute ischemic stroke remain untreated.
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in the histology study area, how can you obtain information about the image type, original magnification, tissue source, and the stain or procedure used to obtain the displayed histological image?
In the bottom right corner of the APR window, click the I symbol (information icon). When you enter the dissection or histology study sections for a given bodily system.
you must first choose a perspective, such as anterior or posterior, and then a topic to study, such as muscles of the belly.
Human anatomy is the scientific study of the structures of the human body. Some of these structures are so minute that they can only be seen and examined with the use of a microscope. Other bigger structures may be observed, moved, measured, and weighed with ease.
Microscopic anatomy, commonly known as histology, is the study of animal, human, and plant cells and tissues. Without a microscope, these subjects are too tiny to observe.
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acacia inherits a variety of genes from both of her parents. these genes combine and interact with each other, some increasing her chance of developing bipolar disorder, some possibly reducing her chances. this overall pattern of genetic inheritance for the mental disorder is called what?
Polygenic refers to the overall pattern of genetic inheritance for the mental disease.
Describe polygenic.A trait that is influenced by two or more genes, such as height or skin tone, is referred to as a polygenic trait. Polygenic traits do not follow the laws of Mendelian inheritance since several genes are involved. Humans have three polygenic traits: height, skin tone, and eye color. Multiple genes control these features.
Etiological diagnosis:Etiology is the study of origin or cause. In epidemiology, etiology is crucial for determining the origin and causation of a disease. It is possible to intervene in the treatment and prevention of contagious, communicable, and non-communicable diseases by taking into account their etiological conditions.
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At the pet store, what two new carriers is the virus passed to? in the movie outbreak
Puppies from pet stores have been linked to a new outbreak of drug-resistant bacteria.
what exactly was virus ?
A virus is an infectious microorganism made up of a segment of nucleic acid (either DNA or RNA) wrapped by a protein coat. A virus cannot replicate on its own; instead, it must infect cells and use host cell components to replicate. Viruses frequently kill host cells, causing harm to the host organism. AIDS, COVID-19, measles, and smallpox are all well-known examples of viruses that cause human disease.
Viruses that infect bacteria and are frequently referred to as phages have the greatest number. They have many of the same features, but they are far more plentiful. Much future research will focus on the mechanisms by which viruses infect people, as well as possible methods for inhibiting viral replication within human cells.
Puppies from pet stores have been linked to a new outbreak of drug-resistant bacteria.
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Krista wants to explain a new sustainable farming technique her company has been testing with farmers. Which of the following models are appropriate options to use in her explanation?
1. Infographic
II. Graph
III. 3-D model
Oland II
OII and III
OI and III
Ol only
Krista wants to explain a new sustainable farming technique her company has been testing with farmers, so the best ways are the infographic and the graph that are in the first option, as both I and II are correct for this.
What is the significance of sustainable farming?It is a type of farming that regulates the soil, the climate, and the overall atmosphere, along with the health of the animals and the plants. There are different forms of sustainable farming, such as organic farming, where pesticides are not used.
Hence, Krista wants to explain a new sustainable farming technique her company has been testing with farmers, so the best ways are the infographic and the graph that are in the first option, as both I and II are correct for this.
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Which of the following endocrine glands produces over 30 hormones called corticosteroids?
-Thyroid
-Thymus
-Adrenal Cortex
-Adrenal medulla
A herd of elephants is grazing in a grassland dotted with small trees and shrubs. Zebra’s are grazing alongside them. A group of rhino is bathing in a lake nearby.
The elephants represent?
a.) community
b.) population
c.) biosphere
d.) ecosystem
The elephants represent population. All nationals present in, or temporarily absent from, a country, as well as foreigners permanently resident in a country, are considered population. Correct option (B).
All citizens present in, or temporarily absent from, a country, as well as foreigners permanently resident in a country, are characterized as population. This statistic depicts the average number of people who reside in a certain location. The yearly changes in population caused by births, deaths, and net migration during the year are referred to as growth rates.
National military forces stationed abroad; commercial seafarers at sea; diplomatic staff stationed abroad; civilian immigrants residing in the country; displaced individuals resident in the country comprise the total population. It does, however, preclude the following: foreign armed forces stationed in the nation; foreign diplomatic staff stationed in the country; and civilian immigrants visiting the country temporarily. A typical demographic technique is population forecasts.
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explain how haploid (n) and diploid (2n) cells differ from each other. state which cells in the human body are diploid and which are haploid.
Meiosis is the process by which haploid cells are produced. Mitosis occurs in diploid cells. Haploid cells are exclusively employed for sex cells in higher organisms such as humans.
Except for sex cells, all other cells in higher organisms, such as humans, are diploid. The existence of a single set of chromosomes in an organism's cells is referred to as haploidy. Diploid creatures reproduce sexually (having two sets of chromosomes, one from each parent). Only the egg and sperm cells in humans are haploid.
Diploid cells reproduce through mitosis, producing daughter cells that are identical to both the parent cells and each other.
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ap bio unit 3 examleave the first ratingterms in this set (58)what is the term for metabolicpathways that release storedenergy by breaking downcomplex molecules.
Catabolism is the metabolic pathway that releases stored energy by breaking down complex molecules.
There are two types of metabolisms: anabolism and catabolism. Something is synthesized in anabolism, whereas catabolism performs the exact opposite of anabolism.
The breakdown of complex molecules into simpler ones by catabolic pathways typically results in the release of energy. In catabolic pathways, the energy that is stored in the bonds of complex molecules like glucose and fats is released.
The catabolic, or respiration-driven breakdown of complex organic molecules into water and carbon dioxide results in the storage of released energy in ATP molecules.
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Which type of psychoactive drug is used medically to block pain messages to the brain? (a) Depressants, (b) Hallucinogens, (c) Opiates, (d) Stimulants.
Opiates type of psychoactive drug is used medically to block pain messages to the brain. It is given medically to treat the patient with extreme pain condition.
Opioids, sometimes known as narcotics, are drugs that doctors recommend to relieve severe or chronic pain. People with backaches and chronic headaches utilize them. Opioids bind to opioid receptors, which are proteins found on nerve cells in the brain, spinal cord, gut, and other areas of the body. When this occurs, the opioids stop the brain from receiving pain signals that are delivered from the body through the spinal cord. Opioids involve considerable dangers and can be extremely addictive even if they can successfully treat pain. When opioids are used to treat chronic pain over an extended length of time, the risk of addiction is particularly high.
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How are lactic acid fermentation and alcoholic fermentation similar? different?
Answer:
One similarity between lactic acid fermentation and alcoholic fermentation is that they are both types of anaerobic respiration, meaning they occur in the absence of oxygen.
One key difference is that lactic acid fermentation results in the production of lactic acid, while alcoholic fermentation results in the production of ethanol and carbon dioxide.
Precipitation falls to the ground and eventually ends up in the ocean. Which of the following is the most direct way for the water to get from the soil to the ocean?A. By way of a recharge zone with a low percolation rateB. By way of an open watershedC. By way of a closed watershedD. By way of thermohaline circulation within an aquifer
The most direct way for water to get from the soil to the ocean is by way of an open watershed. The correct answer is B.
An open watershed is a land area where precipitation flows into a stream, river, or other body of water, which then flows into the ocean. This path is considered the most direct way for water to travel from the soil to the ocean. The water does not have to pass through a recharge zone, which is an area where water percolates through the soil and into an aquifer. In a closed watershed, the water flows into a lake or other closed body of water, which may not flow into the ocean. In thermohaline circulation, water is circulated within an aquifer and not directly reaches the ocean. Open watersheds provide the most direct route for water to travel from the soil to the ocean.
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An antimicrobial that inhibits cell wall synthesis will result in which of the following?
A) Cells become more susceptible to osmotic pressure.
B) Cells cannot attach to their hosts.
C) Ribosomes lose their function.
D) The sterols in the cell wall become nonfunctional.
E) The replication of cells, including cancer cells, slows down.
An antimicrobial that inhibits cell wall synthesis, by this cells become more susceptible to osmotic pressure, hence option A is correct.
What is the effect of antimicrobials on cells?Antibiotics are defined as substances that help to stop infections caused by bacteria. It is a process of inhibition of cell wall synthesis of bacteria and is one of the mechanisms used by antibiotics to stop the infection.
Osmotic rupture defines as the no balance between the pressure inside and outside of the cell which causes cells to burst.
Therefore, cells becoming more susceptible to osmotic pressure is the correct option.
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