Choose the best option to complete the sentence. a disease in which a person contracts rabies virus after a bite from an infected raccoon would be a __________ disease.
The junction between an axon and the muscle fiber itself is called a
The junction between an axon and the muscle fiber is called the neuromuscular junction.
Explanation:The junction between an axon and the muscle fiber itself is called the neuromuscular junction.
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What should be done after a spill is wiped up with a cloth?
Which state of matter is the most dense?
solid
gas
liquid
all the above
The spongy bone that is found within the ends of long bones is called
Answer:
The answer is trabecular.
Explanation:
Which term describes the normal process of excreting urine?
What was one effect the battle of gettysburg had on the south?
Alkylating agents work to prevent the cell from replicating its genetic material, thus preventing cell division. which checkpoint would the cell most likely stop at?
Alkylating agents would most likely cause the cell to halt at the G₁ checkpoint, where the cell checks for DNA damage before proceeding to DNA replication. However, the G₂ checkpoint also plays a key role in checking for DNA damage or incomplete replication before a cell enters mitosis.
Explanation:Alkylating agents act by preventing cell division through inhibition of genetic material replication. In terms of cell cycle checkpoints, these agents would most likely cause the cell to halt at the G₁ checkpoint, primarily regulated by proteins Rb, p53, and p21. During the G₁ phase, the cell prepares for DNA replication, which occurs in the subsequent S phase. But if there is a presence of damaged DNA, proteins like p53 halt the cell cycle and call upon enzymes to repair the genetic material. If repair is not possible, p53 can trigger a process called apoptosis to prevent the propagation of damaged DNA.
However, consideration should also be given to the G₂ checkpoint. This checkpoint bars entry into the mitotic phase if it detects DNA damage or incomplete replication, triggering repair mechanisms or a complete halt to the cell cycle. It thus ensures that cells entering mitosis have accurately replicated their DNA.
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Skeletal muscle fibers are very unusual because they may be
Skeletal muscle fibers are unusual because they are multinucleated, striated, and have the ability to contract rapidly for voluntary movements but tire quickly.
Explanation:Skeletal muscle fibers are unique because they are multinucleated, and they have a striated appearance due to a repeating pattern of units called sarcomeres. The multinucleated aspect of skeletal muscle fiber occurs because these fibers are formed from the fusion of developmental myoblasts. Moreover, they have the special ability to contract rapidly but tire quickly, making them suitable for voluntary movements.
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To test how fertilizer affects aquatic animals, a student prepared four identical containers with water fleas. The student then added different amounts of fertilizer mixed with distilled water to three of the containers and distilled water alone to one of the containers. What is the experimental group in this experiment? A. All the water fleas in the container with the most fertilizer B. The water fleas in the container with only distilled water C. The water fleas in all the containers receiving fertilizer D. All the water fleas in all the containers
The student then added different amounts of fertilizer mixed with distilled water to three of the containers and distilled water alone to one of the containers. The water fleas in all the containers receiving fertilizer.
What is fertilizer?An element that is necessary or advantageous for plant growth and development or for the quality characteristics of the harvested product of a certain plant species grown in its natural or cultivated environment is known as a mineral plant nutrient.
Plants require 14 vital nutrients for growth and health, which fertilizers give, in addition to the carbon, hydrogen, and oxygen they obtain from the atmosphere and water.
The third main nutrient for crops and plants is potassium. Ores collected for mining are also used to make fertilizers with potassium. The potash rock can be transformed into plant nourishment through a number of chemical processes, including potassium chloride, sulphate, and nitrate.
Therefore, The student then added different amounts of fertilizer mixed with distilled water to three of the containers and distilled water alone to one of the containers. The water fleas in all the containers receiving fertilizer.
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Answer: B.
Explanation: The water fleas in the container with only distilled water
Maria has drawn a flow chart using stars to track electron carriers (nadh and fadh2) during cellular respiration, but she has not completed her model. if twelve electron carriers are delivered to the electron transport chain (etc) per molecule of glucose, how many stars should she show being produced during glycolysis and pyruvate processing
During glycolysis, an anaerobic type of cellular respiration, generates 2 ATP molecules and 2 pyruvates. So, there would be 4 stars
Cellular respiration is how the cell processes and produces energy, ATP.
ATP is the energy currency of the cell, without its generation the cell would fail and cease to function. Now, ATP is produced through cellular respiration which occurs from the process of glycolysis, formation of acetyl coA, citric acid cycle and lastly, oxidative metabolism.
The wood thrush makes its nest in woodlands in the northern and eastern united states. as patches of woods become smaller, increasing numbers of wood thrush nests have eggs laid in them by the brown-headed cowbird. cowbirds live in open fields and are nest parasites; the female cowbird flies up to an unattended nest, quickly lays an egg in another bird's nest, and leaves the host parents to raise their "adopted" young. wood thrushes are decreasing in numbers because ________.
Answer:
habitat fragmentation makes it easier for cowbird parasitism to occur.
Explanation:
just got it right
According to productivity expert odette pollar, "to do more in a day, ________."
The portion of the cell's life cycle that does not involve cell division is known as: cytokinesis interphase metaphase mitosis prophase
A client is being discharged from the gynecological unit after treatment for an acute pelvic inflammatory disease (pid). what priority instruction regarding disease management should the nurse include?
In giving a priority instruction regarding the disease management of the patient a nurse should include the following: (1) Flush entirely the peritoneal pads in the toilet; (2) Place the pads in bio-hazard waste stacks; (3) Put the pads in the patient’s waste carrier; (4) Seal the used pads in a unsoiled paper bag. This should be instructed to a patient who is about to be discharged from the gynecological clinic after the treatment for acute pelvic inflammatory.
The average pea pod contains about 7 peas. the round shape of peas is determined by a dominant allele (r). if heterozygous round pea plants (r/r) are self-fertilized, what proportion of pods in the f1 plants will have all round peas?
Final answer:
It is not possible to definitively determine whether the round pea parent plant is homozygous or heterozygous with the data of three round pea plants; however, if the plant is heterozygous, the probability that three randomly chosen offspring will all have round peas is roughly 42.2%.
Explanation:
In pea plants, having round peas is a trait caused by a dominant allele denoted as 'R', whereas wrinkled peas are associated with the recessive allele 'r'. A test cross involving a rr pea plant (wrinkled peas) and a plant with round peas of unknown genotype resulting in all round pea offspring does not definitively tell us if the round pea parent plant is homozygous dominant (RR) or heterozygous (Rr) because the presence of only round peas in the offspring could occur by chance even if the unknown parent were heterozygous.
When dealing with a heterozygous round pea plant (Rr), for each individual offspring, there is a 3/4 chance that it will exhibit the dominant round pea phenotype. Therefore, the probability that a random sample of three offspring will all show the round pea phenotype is calculated by multiplying the individual probabilities: (3/4) * (3/4) * (3/4) = 27/64 or approximately 0.422, which is higher than one-eighth as previously stated.
If heterozygous round pea plants (Rr) are self-fertilized, approximately 75% of the pods in the F1 generation will have all round peas.
In classical genetics, the principles of Mendelian inheritance can be applied to predict the outcomes of genetic crosses.
The round shape of peas is determined by the dominant allele (r), while the recessive allele (r) results in wrinkled peas.
When heterozygous round pea plants (Rr) are self-fertilized, the Punnett square can be used to determine the possible combinations of alleles in their offspring, known as the F1 generation.
In this case, the genotype of the heterozygous round pea plant (Rr) can produce two types of gametes: one carrying the dominant allele (R) and the other carrying the recessive allele (r).
The possible combinations of these gametes in the F1 generation include RR (round) and Rr (round).
Since both RR and Rr genotypes result in a round phenotype, the proportion of F1 plants with all round peas is the sum of the proportions of these two genotypes.
The genotype RR represents one-fourth (25%) of the possible combinations, and Rr represents half (50%).
Therefore, the proportion of F1 plants with all round peas is 25% (RR) + 50% (Rr) = 75%.
In , if heterozygous round pea plants (Rr) are self-fertilized, approximately 75% of the pods in the F1 generation will have all round peas.
A team of scientists is working to formulate a drug that can treat children who are diagnosed with gigantism. Which effect should the drug have on patients?
Answer:
decreases the secretion of substances from the pituitary gland that cause growth
Explanation:
Gigantism is a disorder that occurs when the pituitary gland, the internal secretion gland, overproduces growth hormone. It is a disordered growth picture, especially in the arms and legs, and is accompanied by corresponding growth in height. For this reason, we can conclude that the effect of a drug that will act against gigantism will decrease the secretion of growth-causing pituitary substances.
Help!
Which of the following is false?
Lithospheric plates move during earthquakes
Lithospheric plates can move even if there is no earthquake
Lithospheric plates can move very slowly
Lithospheric plates do not move
The false statement is that 'Lithospheric plates do not move.' Lithospheric plates are constantly moving, albeit slowly, and their movement can cause earthquakes among other geological phenomena.
Explanation:The statement that is false among the given options is: Lithospheric plates do not move. Lithospheric plates, which are large segments of the Earth's crust, indeed move around the globe at rates typically measured in millimeters to a few centimeters per year. These movements are analogous to the growth rate of human fingernails. Lithospheric plates do move during earthquakes when the stress that has built up along fault lines is released suddenly. They can also move without the occurrence of earthquakes, albeit very slowly. Tectonic plates engage in several types of interactions at their boundaries, including divergent, convergent, and transform motions, which can cause earthquakes and are associated with other geological phenomena such as mountain building and volcanic activity.
why would plants have pigments that are not photosynthetically active
Plants have pigments that are not photosynthetically active because:
They reflect wave lengths that are not absorbed during photosynthesisPhotosynthesis is the process of plants converting energy from sunlight and other sources into oxygen which helps in cellular respiration.
The pigment which enables plants to convert energy into food is known as chlorophyll.
One example of a plant pigment that does not play a role in photosynthesis is called anthocyanin. Its job is to give color to the plants.
Therefore, the reason plant pigments are not active in the photosynthesis stage is because they reflect wave lengths and perform other specific functions.
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What trend do you see in the changes in plant communities over the course of ecological succession?
Final answer:
The trend in ecological succession involves a sequence from pioneer species to intermediate species, and potentially to a climax community. This process can result from either primary or secondary succession, with the latter generally progressing more quickly due to existing soil resources.
Explanation:
The trend observed in the changes in plant communities during ecological succession is a generally predictable sequence of growth and change. After a disturbance, pioneer species like annual plants will start to grow, usually followed by grasses and perennials. These early colonizers modify the environment in ways that favor succeeding phases of plant community development. As time progresses, grasses may give way to shrubs and trees such as pines, oaks, and hickories - known as intermediate species. After many years or even centuries, a climax community will form, although modern ecology suggests that rather than being a final stage, these communities too are dynamic and subject to change with further disturbances.
There are two types of succession: primary succession, which occurs on land that has never been colonized before, and secondary succession, which takes place in areas that were previously inhabited but have been disturbed. Both processes see shifts in species composition over time, but secondary succession often proceeds faster because the soil already has a seed bank and nutrients to facilitate growth.
In summary, the common trend in ecological succession is a change from a simple initial community of organisms to increasingly complex and diverse communities, potentially leading to a more stable climax community, which nonetheless may be altered by new disturbances.
When water freezes, its volume _____.
increases about 9%
increases more than 10%
decreases about 9%
decreases 10% or more
Explain the role human body systems tissues cells and dna play in identity
The role of the human body systems, tissues, and cells shows a significant role in individuality because each of them comprises of unique traits that is the characteristic to each individual. Every individual has his or her own DNA that recognizes their individuality.
The posterior, inner part of the eye is called the __________ of the eye.
ATP molecules store cellular energy. When phosphate groups are removed and molecules of ADP are formed, energy is released. This energy can be used to perform
Adenosine triphosphate (ATP) is the primary cellular energy currency. When ATP is converted to ADP and a phosphate group, energy is released. This energy is used for various cellular activities, such as muscle contraction or glucose metabolism.
Explanation:Adenosine triphosphate, or ATP, is the primary energy currency in cells. ATP stores energy in the form of phosphate ester bonds. When these phosphodiester bonds are broken, usually by the removal of a terminal phosphate group, ATP is converted to ADP and a phosphate group, and energy is released. This released energy is used to perform various cellular activities.
For instance, if a cell needs to contract a muscle, it will use the energy from ATP. Similarly, when glucose first enters a cell, a phosphate group is transferred from ATP, forming glucose phosphate and ADP. Once glucose is phosphorylated in this way, it can be stored as glycogen or metabolized for immediate energy.
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Which part of an egg is most similar to the cell membrane?
The egg's shell is most similar to the cell membrane, or plasma membrane. Both serve as semi-permeable barriers, offering protection and regulating the exchange of materials.
Explanation:The part of an egg that is most similar to the cell membrane, often referred to as the plasma membrane, is the egg's shell. The plasma membrane and the egg shell both provide a protective barrier for the inside contents, regulate which materials can pass in or out, and are semi-permeable, meaning they allow certain molecules to pass through, while preventing others.
The plasma membrane is primarily composed of back-to-back phospholipids (a "bilayer"), cholesterol, and various proteins within the membrane, contributing to its functionality and fluidity. Similarly, an egg shell provides protection and regulates the permeability, allowing for the exchange of carbon dioxide and oxygen necessary for the developing embryo in the egg.
It's also noteworthy to mention that similar to the cell membrane in a cell, the egg shell in an egg separates the interior of the egg, containing the albumin and yolk providing nutrients to the embryo, from the external environment, thereby playing a significant role in maintaining a stable internal environment.
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Which one would have more mitochondria muscles, fat, skin, or hair cells?
The variability in marine salinity between habitats does not impact the fish living there
Answer:
The variability in marine salinity between habitats will have an impact on the fish living there as the change in the salt level can affect fish life cycle. It depends on the salt tolerance levels of fish. Fishes which adapt to the change salt conditions will survive.
In species like sea turtles with high juvenile mortality, low adult mortality, and low fecundity, conservationists can most effectively help them by
Which theory would be most supported if the moon had an irregular shape, like an asteroid?
Petroleum and natural gas form from _____.
A. heating and cooling of magma in underground chambers
B. plant material that collected millions of years ago in swamps
C. the decay of radioactive sediments under ground
D. the remains of plants and animals buried in seas long ago