Answers
Answer:
C
Explanation: nice job
Related Questions
Which of the following events does not occur during prophase I of meiosis?
a) Spindle fibers form.
b) Homologous pairs of chromosomes align at the metaphase plate.
c) Homologues come very close together.
d) Crossing over occurs between sister chromatids.
e) Chromosomes condense.
Answers
During s phase I of meiosis, none of the following activities result in homologous chromosome pairs aligning at the metaphase plate.
Homologous chromosomes link up and create synapses during prophase I, a process that only occurs during meiosis. The connected to various are known as bivalents, and it is now clear that genetic recombination is what causes chiasmata to occur. These can be seen under a microscope thanks to chromosomal condensation. Recombination does not take place during the s phase of mitosis. Leptotene, Zygotene, Pachytene, Diplotene, and Diakinesis are the five phases that make up Prophase 1, the first stage of Meiosis. Leptotene, zygotene, changes in the quantity, diplotene, & diakinesis are the five sub-stages of prophase I, the initial stage of the first meiotic (meiosis I), which is crucial for the process of homologous recombination, which entails the exchange of DNA among homologous chromosomes. Five distinct phases make up meiotic prophase I.
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which part of the stomach leads to the small intestine
Answers
The part of the stomach that leads to the small intestine is the pyloric sphincter. The pyloric sphincter is a muscle ring that separates the stomach from the small intestine.
The pyloric sphincter functions as a valve, regulating the flow of partially digested food (chyme) from the stomach to the small intestine. It is a narrow passage that opens and closes as the stomach walls contract and relaxes. The pyloric sphincter is located between the lower part of the stomach and the small intestine. Its primary function is to limit the amount of chyme that enters the duodenum at any given moment.
The pyloric sphincter controls the discharge of chyme into the small intestine. When food is partially digested in the stomach, the pyloric sphincter slowly opens to enable the chyme to pass into the small intestine. Once the chyme has entered the small intestine, the pyloric sphincter closes, preventing any of the chyme from reentering the stomach.
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What is the element with the highest electronegativity value?
What is the element with the highest electronegativity value?
A)calcium
B)cesium
C)fluorine
D)helium
Answers
The element with the highest electronegativity value is fluorine.
Electronegativity is a measure of the ability of an atom to attract electrons towards itself in a chemical bond. It is expressed on a scale from 0 to 4, with fluorine having the highest electronegativity value of 4.0. This means that fluorine has the strongest ability to attract electrons towards itself in a bond compared to any other element. In contrast, helium has a very low electronegativity value of 0.0, indicating that it has a very weak ability to attract electrons. Calcium and cesium have electronegativity values of 1.0 and 0.79, respectively, which are significantly lower than that of fluorine.
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Observing Footprints from the Past
detective"O" (observation) or I (inference)
Answers
Answer:
dfvas
Explanation:
sadvadsssssss
2. An acorn is eaten by a squirrel and the squirrel is eaten by an owl. Show this feeding relationship
as a food chain. Label the producer, carnivore and the herbivore. (6 points)
Answers
Answer:
Producer: Acorn
Herbivore: Squirrel
Carnivore: Owl
Explanation:
Keep in mind not all squirrels are herbivores but these are the ones commonly found and this is the answer in accordance with the question.
Facts from Video, “What is a Gene?”
Answers
Answer:
a gene is a basic unit of heredity and a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein. During gene expression, the DNA is first copied into RNA. It makes a individual different and unique from the other.
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Can a person be exposed to hiv by hugging or shaking hands with an infected person? a. yes, because the virus can be transmitted through sweat b. no, because none of the bodily fluids that carry the virus are on the surface of the skin c. no, not if the skin is completely covered d. yes, so you can't ever be too safe please select the best answer from the choices provided. a b c d
Answers
Answer: b
Explanation: b best fits how the transmission of hiv works
What absorbs water in a root hair cell
Answers
if the trees in that woodlot are associated with emf, what effect might the excess nitrate have on the fungi and/or trees?
Answers
If the trees in a woodlot are associated with EMF (ectomycorrhizal fungi), excess nitrate in the soil can have negative effects on both the fungi and the trees.
EMF are a type of fungi that form a mutualistic association with the roots of trees. They help the trees to absorb water and nutrients from the soil, and in turn, the fungi receive carbon compounds from the trees. Nitrate is a form of nitrogen that plants and fungi can use for growth. However, when nitrate levels in the soil are too high, it can disrupt the balance of nutrients and affect the EMF and trees in several ways.
Excess nitrate can reduce the availability of other essential nutrients, such as phosphorus, which can limit the growth of the EMF and trees. It can also disrupt the carbon-nitrogen balance between the trees and EMF, which can lead to a decline in the health of both. Additionally, high nitrate levels can lead to the production of harmful reactive nitrogen species, which can cause damage to the EMF and trees.
Overall, excess nitrate in the soil can have negative impacts on the symbiotic relationship between EMF and trees, which can ultimately affect the health and productivity of the woodlot ecosystem.
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how can it be possible that you can inhale the same oxygen atom that a dinosaur inhaled 64 million years ago?
Answers
Answer:
Evolved
Explanation:
The oxygen changed
in the presence of warfarin, what is the value of the selection coefficient s for this population of rats?
Answers
In a given population, the selection coefficient (s) determines the relative fitness of each genotype in relation to the optimal genotype. It is a measure of the difference in survival and reproduction among individuals with different genotypes in a population.
To determine the value of the selection coefficient (s) for a population of rats in the presence of warfarin, we must first understand what warfarin is and how it affects rats. Warfarin is an anticoagulant drug that is commonly used to treat and prevent blood clots in humans. It functions by inhibiting vitamin K-dependent clotting factors, which results in the formation of less stable blood clots that are less likely to cause harm. Warfarin is also used as a rodenticide to control rat populations. Rats that consume warfarin die as a result of internal bleeding since the drug prevents the clotting of their blood.In a population of rats that is exposed to warfarin, we can assume that the individuals with genotypes that make them more resistant to the effects of warfarin will be more likely to survive and reproduce. On the other hand, individuals with genotypes that make them more susceptible to the effects of warfarin will be less likely to survive and reproduce.
Therefore, the value of the selection coefficient (s) for this population of rats in the presence of warfarin is positive. This is because individuals with genotypes that are better adapted to their environment (in this case, the presence of warfarin) will have a higher relative fitness, and therefore a higher selection coefficient.To determine the exact value of the selection coefficient (s) for this population of rats, we would need more information about the genetic makeup of the population and the specific effects of warfarin on different genotypes.
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You have a houseplant known as a spiderplant, it produces a plantlet. what can you do with the plantlet when it falls off?
Answers
I recommend having a pair of gardening shears handy, but you might not necessarily need them.
Which of the following is not considered an environmental impact of geothermal energy? A) gas emissions B) disturbance of the land at drilling sites C) requires large-scale transportation of raw materials to refining sites D) hot waters are corrosive
Answers
Answer:
b
hope this helps
Explanation:
Answer:
the answer is C. disturbance of the land at drilling sites
Explanation:
In order for plants to survive, they must be able to undergo photosynthesis, respiration, and transpiration. Which plant structures are the most essential for those three processes?.
Answers
Chloroplasts, thylakoids, and chlorophyll are the three main biological components that make sure photosynthesis occurs. Chloroplasts found in the mesophyll of leaves are where photosynthesis occurs.
The leaves, stems, and roots of a plant are its principal "organs" or structures. They are composed of collections of specialized tissues with structures that are appropriate for the functions they carry out. The key characteristics of these buildings and their purposes are summarized in the table below. In plants, the chloroplasts, which house the chlorophyll, are where photosynthesis occurs. The thylakoid membrane, a third inner membrane that creates lengthy folds within the chloroplast and is bordered by a double membrane, is present inside chloroplasts.
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Which event occurs after Earth’s surface experiences weathering? Wind carries sediments to a new location. Ice forms cracks in large rocks. Moving water breaks sediments into pieces. Surface materials wear down into sediment.
Answers
Answer:
It is A "Wind carries sediments to a new location"
Explanation: Good job to the person above me "claps"
The event which occurs after earth surface experiences new weathering is wind carries sediments to a new location.
What is weathering?
By coming into contact with the Earth's atmosphere, water, and biological organisms, weathering is the process of decomposing rocks, soil, and minerals as well as wood and manmade objects.
Weathering occurs in situ, that is, without much movement and in the same location. It should not be confused with erosion, which is the movement of rocks and minerals caused by natural forces including water, ice, snow, wind, waves, and gravity before being carried away and dumped somewhere else.
Physical weathering and chemical weathering are two significant categories of weathering processes, and each occasionally includes a biological component.
Therefore, The event which occurs after earth surface experiences new weathering is wind carries sediments to a new location.
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Match each of the following terms with its definition. 1. Mitosisa) The dense, active protoplasm found in the center of the cell 2. Nucleusb) The watery fluid that surrounds the nucleus of the cell and is needed for growth, reproduction, and self-repair 3. Cytoplasm c) The process of cell reproduction of human tissues that occurs when the cell divides into two identical cells 4. Cell membrane d) The part of the cell that encloses the protoplasm and permits soluble substances to enter and leave the cell
Answers
Answer:
1. Mitosis c) The process of cell reproduction of human tissues that occurs when the cell divides into two identical cells
2. Nucleus a) The dense, active protoplasm found in the center of the cell
3. Cytoplasm b) The watery fluid that surrounds the nucleus of the cell and is needed for growth, reproduction, and self-repair
4. Cell membrane d) The part of the cell that encloses the protoplasm and permits soluble substances to enter and leave the cell
Explanation:
Mitosis is the process that undergoes a cell to give two new identical cells. This is how our body makes or renovates tissues.The nucleus is the part of the cell that contains the DNA, which is necessary to synthesize the proteins that the cell and our body need. It is in the center of the cell and has a nuclear membrane that separates it from the rest of the organelles.The cytoplasm is a solution that surrounds the nucleus, and it contains the rest of the organelles that the cell needs for its functions. The cell membrane is the structure that encloses all the cytoplasm and the nucleus. It is made of phospholipids, proteins, and cholesterol, which allows the passage of certain substances.Which human activity would most likely decrease the amount of carbon in the atmosphere?clearing forestsheating coalburning woodplanting trees
Answers
Answer:
It is D. planting trees
Explanation:
Hope this helps
Q7.5. Opponents of intelligent design refer to irreducible complexity as an "argument from personal incredulity" (i.e., "I personally can't imagine how this could have evolved, so it must not have evolved.").
Answers
Opponents of intelligent design do indeed refer to
irreducible complexity
as an "argument from personal incredulity." This term is used to highlight the logical fallacy underlying the argument.
The concept of irreducible complexity, often associated with the work of
biochemist
Michael Behe, suggests that certain biological systems are too complex to have evolved gradually through natural selection and must therefore be the product of intelligent design.
The criticism of irreducible complexity as an argument from personal incredulity stems from the fact that it relies on one's subjective inability to envision a stepwise
evolutionary
pathway for a particular biological feature or system. Just because something is difficult to comprehend or imagine does not imply that it is impossible or requires the involvement of an intelligent designer.
The argument from personal incredulity essentially states, "I personally cannot fathom how this could have evolved, so it must not have evolved." This line of
reasoning
overlooks the vast amount of scientific evidence supporting the theory of evolution and the gradual development of complex biological structures over time.
Critics argue that when faced with complex biological systems, scientists approach the problem by investigating and studying the available evidence, constructing
hypotheses
, conducting experiments, and analyzing data to understand the mechanisms behind their evolution. The scientific method encourages a systematic investigation rather than relying on personal incredulity.
Moreover, examples once considered irreducibly complex have been explained through subsequent scientific research. Proposed examples of irreducible complexity, such as the bacterial flagellum and blood-clotting cascade, have been shown to have
plausible
evolutionary pathways with intermediate stages that provide selective advantages.
In summary, opponents of intelligent design criticize irreducible complexity as an argument from personal incredulity because it relies on one's personal inability to
envision
or understand the evolutionary processes involved. They argue that scientific inquiry and evidence-based reasoning offer more reliable methods for understanding the origins and complexities of biological systems.
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What is the term opponents of intelligent design use to describe irreducible complexity, characterizing it as an "argument from personal incredulity"?
4. A transgenic organism is a living thing whose genes were manipulated, or altered, in some way.
a. True
b. False
Answers
It basically means genetically modified organism(GMO)
which of the following characteristics of dna-dependent dna synthesis is not the same for dna-dependent rna synthesis? group of answer choices initiation of synthesis requires a primer. synthesis is catalyzed in the 5' to 3' direction. all of the given answers are the same for both. the process results in phosphodiester bond formation. synthesis requires a template.
Answers
The characteristic that is not the same for DNA-dependent DNA synthesis and DNA-dependent RNA synthesis is that DNA-dependent RNA synthesis does not require a primer for initiation of synthesis.
In DNA-dependent DNA synthesis, a primer is necessary to provide a starting point for DNA polymerase to attach and begin extending the new strand. However, in DNA-dependent RNA synthesis, the RNA polymerase can directly bind to the promoter sequence on the DNA template and initiate synthesis without the need for a primer.
Both DNA-dependent DNA and RNA synthesis proceed in the 5' to 3' direction, with phosphodiester bond formation between nucleotides. Both also require a template strand to guide the synthesis of the new strand. However, the mechanism of initiation is different between the two processes.
Overall, DNA-dependent DNA and RNA synthesis share many similarities in terms of their basic mechanism, but there are some key differences that reflect the unique requirements of each process. By understanding these differences, we can better appreciate the complexity and versatility of the genetic machinery that drives life as we know it.
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When performing a standard plate count, plates that contain __________________ colonies are selected for counting with the quebec colony counter.
Answers
When performing a standard plate count, plates that contain 30 - 300 Bacterial colonies are selected for counting with the Quebec colony counter.
The countable plate has between 30 and 300 colonies. More than 300 Bacterial colonies would be difficult to count, and less than 30 Bacterial colonies is too small a sample size to present an accurate representation of the original sample.
The Bacterial colonies is isolated with a colony-picking tool such as a toothpick, inoculation loop, or pipette tip. It is then inoculated in a solid or liquid cell culture medium where it is incubated overnight to encourage replication. The general formula to calculate CFU/ml is well known: The number of microbes/ml = number of Bacterial colonies x dilution of the sample. Between 0.3 ml and 0.5 ml of a suspension of indicator bacteria is required for each plate.
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The dorsal cavity is formed early in fetal development.
1. True
2. False
Answers
Answer:
true!
Explanation:
Which type of molecular model is represented in this image?
O=C=0
A. dot diagram
B. space-filling model
C. structural formula
D. ball-and-stick model
Answers
Answer:
C. structural formula
Explanation:
thats the structural formula for carbon dioxide C2O
Complete the equation for photosynthesis.
+ water -
+ oxygen
In light dependent reactions, light energy is absorbed and converted into chemical energy in the form of
ws
DONE
Answers
reptile that sheds its tail when threatened word craze is called
Answers
GECKO is the name of a reptile that, when threatened, sheds its tail. When captured by the tail, some reptile like lizards, salamanders, and tuatara will attempt to shed some of it.
The only animal that is most closely related to humans and has the ability to regrow a missing limb is a lizard. A flawed cartilage tube has been used in place of the original tail, which had a spinal column and nerves, in this instance.
Most lizards can "drop" their tails, although not all of them can. Bearded dragons and green iguanas can lose their tails and grow them back, whereas some reptiles, like crested geckos, can lose their tails but do not grow them back, according to Margaret Wissman, DVM, an expert in avian and exotic veterinary medicine.
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Which group of organisms in the aquarium contains the largest amount of energy? a) primary consumers, b) secondary consumers, c) producers, d) herbivores
Answers
Answer:
b) secondary consumers. This is because they are at the top of the food chain
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What is the role of nitrogen-fixing organisms?
Answers
Answer:
Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen.More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.What three different genotypes are possible for an individual in this population
Answers
Answer:
With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa
Explanation:
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Which image shows labeled organisms that are presented only in plant cells
Answers
Answer:
image containing cell wall,chloroplast,plastid or large vacuole
Explanation:
Hardwired characteristics of the brain that attempt to keep us in balance by correcting deficiencies are referred to as:
Answers
Hardwired characteristics of the brain that attempt to keep us in balance by correcting deficiencies are referred to as homeostatic mechanisms.
Homeostasis is the body's ability to maintain a stable internal environment despite external changes.
In the context of the brain, homeostatic mechanisms involve various processes that regulate physiological functions and maintain optimal levels of essential substances.
These mechanisms can include feedback loops that detect imbalances and initiate corrective actions.
For example, if there is a deficiency in a particular nutrient or hormone, the brain may activate mechanisms to increase its production, decrease its consumption, or enhance its absorption from the environment.
Homeostatic mechanisms play a crucial role in ensuring the body's overall stability and functioning, helping to maintain proper levels of various substances and promoting overall well-being.
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