Why do logged tropical rain forest soils typically have nutrient-poor soils?.
Answers
Logged tropical rainforest soils often have nutrient-poor soils due to the removal of vegetation and disturbance of the natural nutrient cycling processes.
Logged tropical rainforest soils tend to be nutrient-poor primarily because of the removal of vegetation and the disruption of natural nutrient cycling processes that occur in undisturbed ecosystems. When a rainforest is logged, valuable timber trees are selectively harvested, leading to the loss of the canopy layer and the understory vegetation. This removal of vegetation greatly reduces the input of organic matter and plant debris that would naturally decompose and replenish the soil with nutrients. Additionally, the logging process often involves the use of heavy machinery, which can further compact and degrade the soil structure.
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Related Questions
which of the following solutions has the hghers h ion concentration
Answers
How do the light-dependent reactions and
light-independent reactions work together?
Answers
Answer:
In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.
Explanation:
What is the weather like in the savanna biome? (Site 1)
Answers
Answer: temperatures are about 10 to 20 °C (50 to 68 °F) in the dry season and 20 to 30 °C (68 to 86 °F) in the wet season.
Explanation:
Part D
Follow these steps and study the table to answer the question,
1. Go to the Weekly US Map: Influenza Summary Update e. At the top of the map, click the back arrow
several times until the map no longer changes. If the current season is shorter than 6 months, view
the previous season with the drop down box. Note how the trends change over time.
2. Review the following data table, which represents the estimated number of deaths, medical visits,
illnesses, and hospitalizations averted by the flu vaccine during several flu seasons.
Averted Deaths
Averted Averted Averted
illnesses Medical Visits Hospitalizations
Pneumonia and Respiratory and
Influenza Circulatory
Deaths Deaths
Fraction
Number Number Number prevented Number Number
(%)
2010-2011 5,039,277 2,514,353 70,821 20.8
3,434
9,880
2011-2012 1,981,571 968,312 39,301
2012-2013 5,628,332 2,701,875 61,522 11.1
1,823
5,280
2013-2014 6,683,929 3,080,284 86,730 21.5
3,840
2014-2015 1,606,813 792,958 47,449
1,419
2015-2016 5,083,498 2,504,323 71,479 18.9
2,882
Season
22.7
1,227
3,618
9,172
7.5
Using the data you just reviewed, create a scientific argument of one to two paragraphs that support or
oppose the current flu vaccine recommendations.
Answers
Answer:
Flu vaccinations are fundamental as they reduce the risk of flu illness by over 50%.
Explanation:
Flu vaccinations reduce the risk of flu illness by over 50%. This makes this process extremely important and fundamental for all human beings as they not only protect the person who gets the vaccine, but it also contributes to the prevention of spreading to other people, especially children and older adults who possess a greater risk of developing flu complications.
The antibodies that are produced by the vaccine prevent the flu virus from attaching to a healthy cell. However, if a person has not been vaccinated, the virus will attack the healthy cells because there is an absence of antibodies that prevent this process.
A segment of DNA is known to contain the following base sequence:3' GATACCTTTGTGTAGTCATCTT 5'a) Write the mRNA that would be transcribed from this DNA fragment.b) Circle the starter and the stopper in your mRNA sequence. Write the sequence of amino acids which would be encoded in translation. Use the mRNA codon table provided.c) Where in the cell do transcription and translation occur?
Answers
a) In order to transcribe the segment of DNA, it is important to note that this process is important for gene expression as a protein. An enzyme called RNA polymerase moves along the DNA until the end of the gene, releasing the mRNA. The DNA has two strands: one that goes from 5' to 3' direction, and another one that goes from 3' to 5' direction. The one that's used for transcription will always be the 3' to 5' one, so we already have the correct strand to work with, as it is a 3' to 5' strand.
However, the mRNA will be assembled in the 5' to 3' direction. Using the same complementary base-pairing rules as in DNA, we will pair Cytosine (C) with Guanine (G), but as there is no Thymine (T) in RNA, we will pair Adenine (A) with Uracil (U).
Therefore, the sequence o mRNA read in the 5' to 3' direction is:
5' CUAUGGAAACACAUCAGUAGAA 3'
b) The starter codon is the AUG codon of a messenger RNA (mRNA). Therefore, the sequence of amino acids will start to be decoded there.
The stopper codon can be one of the three following options: UAA, UAG or UGA. In this case, we can only find the UAG codon.
The codons, then will be:
AUG GAA ACA CAU CAG UAG
Then, we can say that the amino acids translated will be:
Met Glu Thr His Gln
(Methionine - Glutamine - Threonine - Histidine - Glutamine
c) In eukaryotes, transcription occurs inside the nucleus of the cell and translation occurs in the cytoplasm.
Animators use evidence collected from the crime scene to recreate the crime, illustrating the sequence of events and proposing theories as to what might have happened. This form of evidence is _____.
a. produced by forensic artists and photographers
b. usable in place of crime scene photographs
c. demonstrative evidence
d. tangible evidence
Answers
Answer:A
Explanation:
Animators are the person that develops the images and the visuals. The scenes of the crime are used and produced as evidence by forensic artists and photographers. Thus, option a is correct.
What is forensics?Forensics is the field of science that uses techniques and tools to detect the evidence for the crime. They employ the use of laboratory techniques and methods to find the criminal and the facts about the victim.
The forensic artists and photographers recreate the circumstances of the crime scene and collect the evidence to reach the conclusion about the criminal.
The demonstrative evidence is based on the illustration of the scene to recreate the crime and aids in understanding and analyzing the situation.
Therefore, option a. forensic artists and photographers recreate the crime scene.
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Would damage to γ-motor neurons result in an inability to contract the muscle?
Infants are monitored for their developmental milestones at each visit to the doctor. One of the most notable milestones when dealing with motor function is development of the pincher grasp, in which the baby is able to use his or her finger and thumb to grab a small object. How does this relate to the concept of motor units?
Answers
Yes, damage to γ-motor neurons can result in an inability to contract the muscle.
γ-motor neurons are responsible for controlling the sensitivity of the muscle spindles, which are responsible for detecting changes in muscle length. If the γ-motor neurons are damaged, the muscle spindles will not be able to detect changes in muscle length and the muscle will not be able to contract properly.
The development of the pincher grasp is related to the concept of motor units because it requires the coordination of multiple motor units. A motor unit is a group of muscle fibers that are controlled by a single motor neuron. In order to perform the pincher grasp, multiple motor units must be activated in a coordinated manner to allow for the precise movement of the finger and thumb.
This requires the proper functioning of the motor neurons, including the γ-motor neurons, which control the sensitivity of the muscle spindles. Without the proper functioning of the motor neurons, the pincher grasp may not develop properly.
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Marine scientists have collected data showing that oceans have become warmer in recent years. This increase in temperature would reflect an increase in thermal
energy stored in the ocean. If true, would this validate or invalidate the Law of Conservation of Energy?
O Invalidate, because energy should not enter a closed system
Invalidate, because the amount of energy should stay constant everywhere
O Validate, because the ocean is an open system that can gain or lose energy
O Validate, because the overall energy in the ocean does not change when thermal
energy increases
Answers
The correct option is "Validate, because the ocean is an open system that loses energy".
What are Marine scientists?
Marine scientists are scientists who specialize in the study of the ocean and its inhabitants. They conduct research on marine ecosystems, oceanography, climate change, and the effects of human activities on the ocean and its resources. Marine scientists work in a variety of fields, such as marine biology, oceanography, fisheries, marine chemistry, and conservation.
What exactly is the Law of Conservation of Energy?
The Law of Conservation of Energy states that energy cannot be created or destroyed, but it can be converted from one form to another. This means that the total amount of energy in a system remains constant, although it may be transformed into different forms.
Therefore, Option C is correct.
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learning task 1: direction: Complete the crossword on species diversity by filling in a word that fits each clue
Answers
Answer:
DiversityStabilityBiodiversityCosmopolitanEndemicEcosystemPopulationSpeciesExoticExplanation:
Diversity: Diversity as a term is broad and might be used in many aspects, referring to things variety. Diversity in biological terms refers to the present or the past forms of life inhabiting a natural environment. Stability: Related to the resilience concept. Stability depends on the quantity and magnitude of disturbances affecting an ecosystem. If there are no disturbances, the ecosystem is stable. If there are some or many disturbances of small magnitude, the ecosystem remains relatively stable, with a high resilient capability. But when the ecosystem is affected by frequent and severe disturbances, it loses stability and might be seriously affected.Biodiversity: Defined as the different species living in a certain restricted area. It is the variability of living beings in a natural environment, involving all the species on the planet and their genetic material. This variety includes all plants, animals, fungus, and microorganisms living in a certain place, their genetic variability, and the ecosystems these species conform.Cosmopolitan: Referred to as any taxonomic group that live all around the world. Species might be cosmopolitan, or genera, or classes. Sometimes a superior taxonomic group is cosmopolitan, but the species composing it are not. Endemic: Referred to species or any other taxonomic group restricted to a certain area or region, which provides all the environmental requirements of these organisms. They are usually small groups that might be in danger of extinction due to any alteration that might change their environment. They might also be a new species that did not have enough time to disperse yet.Ecosystem: Ecosystems include all the biotic, physical, and chemical components of nature, continuously interacting and depending on each other. The ecosystem is composed of living and non-living things that interact and depend on each other. These are the biotic and abiotic factors. Population: Groups of individuals from the same species, with similar characteristics, capable of crossing, leaving offspring, and living in the same habitat at the same time.Species: Organisms that are morphologically and genetically similar, that can mate, reproduce and leave fertile offspring to the next generation. Members of populations. Exotic: It refers to new species that establish in a new area far or out of their original distribution range. The dispersion of these species to new areas might be accidental or intentional. Once established, these species might be considered invasive if their reproductive rate increases, if their population over-growth, and there is a negative interaction with native species.
You should be on the lookout for tornadoes
during___
because the two often occur
together.
х
thunderstorms
winter storms
blizzards
hurricanes
Answers
Hope this helps
Have a great day/night
Where is the moving electric field that causes Earth's magnetic field? A.)earth surface B.)in space C.)earth mantel D.)earth core
Answers
Answer:
D) core
Explanation:
The magnetic field is caused by the electric currents that occur in the core. The core is basically a hodgepodge of metals and really hot materials. Some of the metals, including iron and nickel, cycle around in the core in a process called convection. These convection currents lead to the electric currents and from there the magnetic currents.
The biological species concept is inadequate for grouping. A) plants. B) parasites. C) asexual organisms. D) animals that migrate. E) sympatric populations.
Answers
C) Asexual organisms cannot be grouped using the biological species concept.
Asexual organisms cannot be grouped using the biological species idea because it only pertains to sexually reproducing organisms. Organisms that reproduce asexually are not considered to be biological species. As this idea is predicated on the mating of many species, it cannot be applied to asexual organisms because their DNA variations are what cause them to reproduce. So, it is difficult to apply the physiological species idea to long-extinct animals for whom there are no longer any available reproductive data. Applying the biological species idea to groups for which little is known about their reproductive biology or behaviour can also be challenging.
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True or false: A target cell may have receptors for more than one type of hormone. True false question.
Answers
True. A target cell can possess receptors for multiple types of hormones.
It is true that a target cell can have receptors for more than one type of hormone. Target cells are specific cells within the body that are designed to respond to particular hormones. These cells possess specific receptors on their surface or within their cytoplasm that can bind to specific hormones. The binding of a hormone to its receptor initiates a series of signaling events that ultimately lead to a cellular response.
Different hormones may act on the same target cell, and in such cases, the target cell will have receptors for each of those hormones. These receptors are highly specific and can recognize and bind to their corresponding hormone molecules. Once the hormone binds to its receptor, it triggers a cascade of intracellular events, such as the activation of specific enzymes or the regulation of gene expression, which ultimately influence the cell's behavior or function.
Having receptors for multiple hormones allows a target cell to respond to various signals and coordinate complex physiological processes. It enables the cell to integrate and interpret multiple hormonal cues and adjust its activity accordingly. This versatility in hormone receptor expression expands the range of responses and ensures a coordinated and balanced physiological response throughout the body.
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Help please ...............
Answers
Answer:
if I’m correct from what I know it should be 3
Which of the following does not achieve sterilization?
O Dry heat
O Ethylene oxide
O Formaldehyde
O Autoclave
O Pasteurization
Answers
Pasteurization does not accomplish sterilization. So, correct option is: Pasteurization.
What is Pasteurization?Pasteurization is a heat-treatment method used to kill dangerous bacteria in foods and drinks.
Pasteurization is not synonymous with sterilization. We lower the bacterial population and other pathogens in some foods and liquids, such as milk, by this technique. It prevents food deterioration and food poisoning. However, because the bacterial spores are not destroyed, this method is not really sterilization.Dry heat sterilizes because the oxidation processes caused by the radiating dry heat modify the microbial proteins. The microbes gradually die throughout this procedure. It is accomplished using a hot-air sterilizer.Because ethylene oxide and formaldehyde are used in chemical sterilization, they achieve sterilization. These chemicals thoroughly sterilize and destroy all bacteria. The autoclave sterilizes because it kills all germs and spores. In this method, heat is generated by steam that is compressed.Thus, correct option is: Pasteurization.
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the central dogma of molecular biology is centered upon the process of protein synthesis, in which the information from dna is transcribed and translated, resulting in multiple amino acids being joined to form _______________.
Answers
the central dogma of molecular biology is centered upon the process of protein synthesis, in which the information from DNA is transcribed and translated, resulting in multiple amino acid being joined to form a protein.
The information held in DNA is first converted into RNA by the transcription process before being used to produce proteins. The translation process, which uses ribosomes and RNA transfer, converts this RNA molecule into a protein (tRNA). The genetic code contained in the RNA molecule is translated during this process in order to produce a specific sequence of amino acids, which are subsequently combined to form proteins. Knowing the underlying ideas of gene expression and the regulation of cellular processes requires understanding the central tenet of molecular biology, which describes the movement of genetic information from DNA to RNA to protein.
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Select the correct answer. Jane starts to blink her eyes when her brother shines a flashlight at her. Why does Jane start blinking her eyes? A. because of a spinal reflex B. because of phototropism C. because of a voluntary reaction D. because of fear
Answers
Answer:
C
Explanation:
Jane is reacting to the flashlight being shined in her eyes.
Answer: A or D
Explanation:
It wasn't b or c so go 50/50 with your chances buddy.
Please help! See attachment!
In the table, describe the factors that affect population size.
So basically does it increase or decrease the population
Please help asap!
Answers
Answer:
Habitat : depends (is the habitat high quality? Has more food, water, space, etc?)
Migration : increase
Immigration : decrease
Birth: increase
Death: decrease
which autoinducer is used by many gram-negative bacteria?
Answers
Many gram-negative bacteria use an autoinducer molecule called N-acyl homoserine lactone (AHL) as a signaling molecule for quorum sensing.
Quorum sensing is a mechanism by which bacteria communicate and coordinate their behavior based on population density. AHL molecules are synthesized and released by bacteria into the surrounding environment.
When the population density reaches a certain threshold, the concentration of AHLs increases, allowing bacteria to detect and respond to the presence of other bacteria.
This enables them to regulate various processes such as biofilm formation, virulence factor production, and antibiotic resistance. Different bacterial species produce and respond to specific AHL molecules, leading to species-specific quorum sensing networks.
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Which substance acts as a buffer in natural water?
O A. A pH indicator
O B. Distilled water
O c. Decaying plant matter
O D. Sulfuric acid
Answers
Answer:
i think Decaying plant matter is answer
What cellular process allows unicellular organisms to reproduce?
Answers
Answer:
cell division
Explanation:
it's how cells multiply.
Which organ lies in the lateral and posterior portion of the left upper quadrant (luq) of the abdomen?
Answers
The spleen lies in the lateral and posterior portion of the left upper quadrant (luq) of the abdomen.
It is found in the left hypochondriac region of the abdomen (left upper quadrant). More precisely, the spleen is located posterior to the stomach and anterior to the left hemidiaphragm at the level of ribs.
The spleen is a purple, fist-sized organ. It is wrapped by a fibroelastic capsule which allows the spleen to significantly increase its size when necessary. The spleen is an intraperitoneal organ, so all of its surfaces are covered with visceral peritoneum.
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What is the signal that the protein
chain is
complete?
Answers
Explain the roles of mRNA and tRNA in protein synthesis
Answers
Answer:
look at Explanation
Explanation:
Molecules of tRNA exist free in the cytoplasm of cells. When protein synthesis is taking place, enzymes link tRNA to amino acids in a highly specific manner. The third form of RNA is messenger RNA (mRNA), which receives the genetic code from DNA and carries it into the cytoplasm where protein synthesis takes place.
a crossover between a working gene and its ______ results in a fusion gene. some cases of ______ can result from this type of mutation.
Answers
A crossover between a working gene and its neighboring gene results in a fusion gene. Some cases of autoimmune disorders can result from this type of mutation.
A crossover between a working gene and its neighboring gene can lead to the formation of a fusion gene. This phenomenon is commonly observed in cancer cells and is referred to as chromosomal translocation. Chromosomal translocation occurs when a part of one chromosome breaks off and attaches to another non-homologous chromosome, resulting in the formation of a fusion gene.
In some cases, fusion genes can lead to the development of cancer by causing abnormal cell growth and proliferation. For example, the BCR-ABL fusion gene is commonly observed in patients with chronic myeloid leukemia (CML). This fusion gene is formed due to a reciprocal translocation between chromosomes 9 and 22. The BCR-ABL fusion gene encodes a protein that has constitutive kinase activity, leading to uncontrolled cell growth and ultimately the development of CML.
Fusion genes can also be involved in other diseases, such as autoimmune disorders. For example, the SS18-SSX fusion gene is observed in synovial sarcoma, a rare type of cancer that affects soft tissues. This fusion gene is formed due to a chromosomal translocation between chromosomes X and 18. The SS18-SSX fusion protein interacts with various cellular proteins and disrupts their normal function, leading to the development of synovial sarcoma.
In conclusion, the formation of fusion genes due to chromosomal translocation can lead to various diseases, including cancer and autoimmune disorders. Understanding the mechanisms of formation and the functions of fusion genes can provide valuable insights into the development and treatment of these diseases.
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describe the relationship between the number of colonies observed and the likely mutation rate of the strain.
Answers
The relationship between the number of colonies observed and the likely mutation rate of the strain is an inverse one. As the number of colonies observed increases, the likely mutation rate decreases, and vice versa. This is because the more colonies that are observed, the more likely it is that the strain has experienced a selection pressure, which makes it less likely that it has undergone mutations.
Conversely, a strain with fewer colonies is more likely to have experienced mutations due to the decreased selection pressure.
It is important to note that the number of colonies observed is not the only factor in determining the mutation rate of a strain.
Other factors, such as the specific environment in which the strain was grown, the strain’s genetic makeup, and the presence of additional agents, may all play a role in influencing the mutation rate of a given strain.
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E FilI in the blanks :
1. Carbon dioxide is released during the process of_.
2. Exchange of gases in plants takes place through the cracks in bark is_.
3. Yeast undergoes_
respiration
4. The final products obtained in the anaerobic respiration are_,_,_.
5._ is the energy currency of the cells.
6. The breathing and respiration in woody stem of a plant takes place through_.
7. During Marathon race, we sometimes get painful contractions of leg muscles due to the accumulation of_.
8. The process of respiration which releases energy takes place inside the cells of the body is known as_.
9. The mechanism by which organisms obtain oxygen from air and release carbon dioxide is called_.
10. Seat of respiration is_.
Answers
Answer:
1. Carbon dioxide is released during the process of cellular respiration
2. Exchange of gases in plants takes place through the cracks in bark is Lenticel
3. Yeast undergoes aerobic respiration
4. The final products obtained in the anaerobic respiration are lactic acid, carbon dioxide, and water
5. ATP-Adenosine Triphosphate is the energy currency of the cells.
6. The breathing and respiration in woody stem of a plant takes place through lenticels
7. During Marathon race, we sometimes get painful contractions of leg muscles due to the accumulation of lactic acid
8. The process of respiration which releases energy takes place inside the cells of the body is known as cellular respiration
9. The mechanism by which organisms obtain oxygen from air and release carbon dioxide is called breathing.
10. Seat of respiration is mitochondria
Credit to Kirstenbruke3376
If each parent is a purebred, brown-eyed person, what is the probability of having a brown-eyed child.
Answers
Answer:
100%
Explanation:
Answer:100%
Explanation:
Because if both parents are 100% the average between them is still 100% so there are no other options for the child.
how does the eukaryotic ribosomal small subunit recognize the start codon on the mrna?group of answer choicesit undergoes a conformational charge that recruits other proteins when it hydrogens bonds to the correct tri-nucleotide sequence.it binds an met-trna to the first aug codon after the kozak sequence.it wraps the mrna strand to bring initiation enhancer proteins into the vicinity of the start codon.it binds an met-trna to the first aug codon it encounters.it performs an atp hydrolysis within the small subunit once it encounters a met-trna already bound to the aug.
Answers
The statement "it binds an met-trna to the first AUG codon after the kozak sequence." is the correct answer to how eukaryotic ribosomal small subunit recognize the start codon on the mrna.
First option: This choice is incorrect since amino acids are connected to their associated tRNAs by activating ATP, a process known as aminoacylation of tRNA.
Option 2: This choice is appropriate. Once the tRNA is charged, mRNA attaches a met- tRNA to the first AUG codon following the kozak sequence.
Option three: This choice is incorrect. While recognizing the start codon on the mRNA, there is no conformational change in the tiny unit of the ribosome.
Option four: This choice is incorrect. The mRNA isn't wrapped by ribosomes. Instead, along the mRNA, ribosomes migrate from codon to codon.
Option 5: This choice is incorrect. The initial AUG codon, but before the kozak region, is where it binds a Met-tRNA.
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Can someone answer the question with a small paragraph please brainiest will be given
Answers
Answer:
There are so many ways that you can help save our oceans, many of which involve small changes in your day to day life. If we reduce our carbon footprint, limit plastics, avoid products that exploit marine life, and spread awareness we can make a difference. The ocean is vital to our existence, and we should treat it that way.