4) 24 and 12
What happens during anaphase I and anaphase II stage?One of the two cell divisions is meiosis. From a single parent cell, it generates four daughter cells. Each cell has half of the parent cell's chromosomes. Meiosis I and Meiosis II are the two primary mechanisms that cause meiosis. Four subdivisions make up each meiosis. In meiosis I, anaphase I takes place, and in meiosis II, anaphase II. The homologous chromosomes are pulled apart and moved to the opposite ends of the cell during anaphase I, whereas during anaphase II, the sister chromatids of each chromosome are separated and moved towards the poles. Additionally, anaphase I happens when a cell is in the diploid condition, but anaphase II happens when a cell is in haploid condition.
The cell has 12 chromosomes, after anaphase I stage each chromatid is considered a separate chromosome structure, hence there will be 24 chromosomes. After meiosis I is complete the number of chromosomes again become 12 because of the division of the nucleus.
At anaphase II, the sister chromatids are separated hence, the number of chromosomes remain 12.
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If a transmembrane domain of protein contains beta-sheet structure, the overall structure of the transmembrane portion is likely a _
β-barrel
What is the structure of β-barrel proteins?A beta barrel is a beta sheet made of tandem repetitions that twists and coils to form a closed toroidal structure in protein structures. The first strand of the beta barrel is connected to the last strand (hydrogen bond). Many beta-barrels have an antiparallel arrangement of the beta-strands. The majority of them are proteins that are soluble in water and typically bind hydrophobic ligands in the middle of the barrel, like lipocalins. More than 600 proteins with a variety of functions have been shown to include the beta barrel shape.
In many cases, the strands contain alternating polar and non-polar (hydrophilic and hydrophobic) amino acids. As a result, the polar residues are oriented toward the solvent-exposed surface of the barrel and the hydrophobic residues are oriented into the interior of the barrel to form a hydrophobic core.
I understand the question you are looking for is this:
If a transmembrane domain of protein contains -sheet structure, the overall structure of the transmembrane portion is likely a ____________.
A) β-barrel
B) β-tube
C) β-turn
D) β-helix
E) none of the above
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A conservative boundary primarily causes?
A. new oceanic crust
B. volcanoes
C. earthquakes
D. mountains
Skin tanning is an example of which adaptation technique?
O A.
behavioral adaptation
• B.
cultural adaptation
• C.
structural adaptation
O D.
physiological adaptation
Answer:
D. physiological adaptations
Explanation:
tanning of skin when exposed to the sun over long periods, the formation of calluses on hands in response to repeated contact or pressure, and the ability of certain organisms to absorb nutrients under low oxygen tensions.
three events on the earth where solar energy is used for natural phenomena
Answer:
Solar phenomena are the natural phenomena occurring within the outer atmosphere of the Sun. These phenomena take many forms, including solar wind, radio wave flux, solar flares, coronal mass ejections, coronal heating and sunspots.
Answer:
Sunspots, Solar flares, and Coronal mass ejections (CMEs).
Explanation:
Sunspots:
Sunspot pair surface phenomena occur when a magnetic flux tube breaks the star's surface, loops about, and then re-enters the star. These tubes have broken the surface after rising buoyantly from the internal depths. The lengthy response is substantially more difficult because the entire procedure is so challenging! Let's start with the most basic question: Why do magnetic flux tubes rise to the surface buoyantly at all? If you visualize a star in thermal equilibrium with a single, isolated horizontal (i.e., perpendicular to the direction of gravity) magnetic field tube. With the subscripts I for within the tube and e for outside the tube, the fluid's attributes are pressure, density, and temperature. Since stars are essentially in a state of hydrostatic equilibrium, the pressure inside and outside of the tube must be identical. However, because of the magnetic field, there is also magnetic pressure inside the tube. Thus, p e = p e + p m, where p m is the magnetic pressure, is what we have. Now that we are in thermal equilibrium, we can assume that T i = T e = T, the temperature inside and outside, is the same since thermal diffusion moves far more quickly than ohmic (magnetic) or viscous molecules. Since rho e > rho i must be true for these two sides to be in balance, the region with the magnetic field will rise since it is less dense and buoyant than the other side. In two truly outstanding publications published in 1955, Eugine Parker originally defined this process. He basically came up with a lot of theories about how the Sun's various aspects would develop, and after decades of testing, nearly all of these theories have proven to be accurate. He inspired the Parker Solar Probe, which I think is the first and only mission NASA has launched into orbit with his name attached. The reason why a tube of magnetic flux might ever form at the surface is solely explained by this one step (the answer being that it rises there from the deep interior due to a mechanism known as magnetic buoyancy). There is much more to this, including why the Sun even has a magnetic field, how it maintains the field, why sunspots are dark, why they behave in such a predictable way (see the butterfly diagram, which depicts the 11 or 22-year solar cycle by which sunspot pairs reverse polarity, migrate, and cycle in occurrence rate) and much more!
Solar flares:
An enormous, unexpected burst of energy from the Sun is known as a solar flare. They don't pose a serious threat to humanity since the Earth's atmosphere effectively shields us from them. However, they could be harmful to people and spacecraft beyond the Earth's atmosphere. A far greater event known as a Coronal Mass Ejection (CME), which involves the emission of a tremendous amount of energy as well as matter, can occasionally occur alongside solar flares. Again, the atmosphere and magnetosphere of the Earth provide protection for us people on the ground. Theoretically, if a CME orders of magnitude larger than anything we've ever seen were to be directed at Earth for some reason, it could overwhelm the magnetosphere and atmosphere and have a significant negative impact on biological life. However, at that point, you're not talking about a solar flare or a CME; rather, you're talking about some other mechanism that is disrupting the Sun.
Coronal mass ejections:
Strong, protracted solar flares and filament eruptions can cause large clouds of solar plasma, known as coronal mass ejections (or CMEs), to be flung away from the Sun. The OSO 7 spacecraft's coronagraph observations between 1971 and 1973 provided the first evidence of these dynamic occurrences. A tiny disk placed over the Sun by a coronagraph causes a solar eclipse. Because they are so weak, coronal mass ejections cannot be seen in any other way. White-light coronagraphs are equipped with the SOHO and STEREO spacecraft to find coronal mass ejections. Strong geomagnetic storms are mostly caused by coronal mass ejections, making them crucial to monitor. A coronal mass ejection is seen in the animation below as viewed by LASCO on board the SOHO satellite.
ANSWER QUICK
Identify the choice(s) by which carbon atoms may return to the atmosphere or water.
Group of answer choices
Respiration
all of the choices
Combustion
Erosion
The source by which carbon atoms may return to the atmosphere or water is respiration, combustion, as well as erosion. The correct option is B.
What is carbon cycle?The carbon cycle describes the continuous movement of carbon atoms from the atmosphere to the Earth and then back into the atmosphere.
Because our planet and its atmosphere form a closed system, the amount of carbon in this system remains constant.
It is critical for our planet's climate and carbon balance to remain stable. Carbon is the lifeblood of the Earth, and the carbon cycle regulates it naturally. The Earth would be frozen if it didn't have it.
The maximum amount of carbon is usually stored in rocks and sediments, with the remainder in the ocean, atmosphere, and living organisms.
Carbon atoms can return to the atmosphere or water through respiration, combustion, or erosion.
Thus, the correct option is B.
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Why is determining the phylogenetic relationships among major groups of bacteria more difficult than determining the phylogenetic relationships among major groups of mammals
Determination of the phylogenetic relationships among major groups of bacteria more difficult than determining the phylogenetic relationships among major groups of mammals because of frequent horizontal gene transfer.
How does horizontal gene transfer affect bacterial classification?In addition to being a key factor in the evolution of bacteria that can break down novel compounds like pesticides made by humans, horizontal gene transfer also plays a crucial role in the maintenance, transmission, and evolution of virulence. It is the main mechanism by which antibiotic resistance in bacteria spreads.
The evolution of Archaea and Bacteria involved horizontal gene transfer across the two domains, despite the fact that gene exchange is simpler in closely related organisms. If horizontal gene transfer prevents the reconstruction of phylogenetic relationships in the microbial world, it is debatable.
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What would you look for in order to distinguish a simple animal from a multicellular protist, such as the slime mold?
Answer:
Slime molds are fungus-like protists commonly found on rotting logs and compost
Explanation:
Name the yellow highlighted structures that pass through the intervertebral foramina.
The structure that passes through the intervertebral foramina is the spinal nerve.
What is intervertebral foramina?Intervertebral foramina is a type of foramen or an opening that is found in the vertebral column and is formed between two spinal vertebrae.
The Intervertebral foramina provides an opening for the passage of the spinal nerve that branched off from the spinal cord.
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root cap is the protective layer of root why?
Suppose a species lived in an environment that changed very little over millions of years. Which theory about how fast evolution occurs would most likely explain the evolution of that species?
Gradualism is referred to the theory about how fast evolution occurs in this type of species.
What is Gradualism?This type of evolutionary changes occurs gradually and not in large steps or volume.
This however explains why the species had very little changes for a very long time as a result of the environment being best suited for them.
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James notices that a macro virus has been detected on a workstation in his organization. What was the most likely path for the infection
Answer:
A user intentionally enabled macros for an infected file
The most important role of bacteria in the environment is Group of answer choices as a source of restriction enzymes. as disease-causing agents. as fungal control. as decomposers.
The most important role of bacteria in the environment is as decomposers.
Bacteria as decomposers:
A decomposer is a living thing that gets energy by breaking down dead plants and animals. In order for other species in the food chain to be able to use nitrogen, decomposer bacteria must first be able to fix nitrogen in the soil. In particular, the bacteria convert atmospheric nitrogen into plant-useful compounds like ammonia, nitrate, and nitrite.
There are four functional categories for bacteria. The majority are decomposers that eat simple carbon compounds like fresh plant litter and root exudates. By doing this, bacteria transform the energy found in soil organic matter into forms that the other creatures in the soil food chain can utilise.
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The dorsal attentional control network supports ________________ and includes the ______________________.
The dorsal attentional control network supports attentional focus and includes intraparietal sulci and frontal eye fields.
What is Dorsal attentional control network?This is also referred to as dorsal frontoparietal network and involves components such as intraparietal sulci and frontal eye fields.
They help in the engagement of externally directed attentional tasks to ensure it is appropriately done.
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Plucking _____.
1. happens when large rocks smash against a river bed
2. is the way large boulders are transported by wind
3. happens when glaciers pull rocks from Earth's surface
4. is how small, light particles are transported in water
Answer:
Plucking...happens when glaciers pull rocks from the earths surface
So I believe that your answer would be 3
Explanation:
Plucking is removal of entire chunks of rock. Courtesy of Rocky Mountain National Park. Glaciers can shape landscapes through erosion, or the removal of rock and sediment.
Hope this helps:)
Germinal cells can most likely divide indefinitely due to the activity of an enzyme called ________.
Germinal cells can most likely divide indefinitely due to the activity of an enzyme called Telomerase.
The telomeric sequences are extra sequences which are reduced during several rounds of replication. However, these are restored by the enzyme telomerase which keeps the length of the telomere sequence enough to undergo several rounds of replication. Generation after generation, germ cells must precisely transmit genetic information. They have a lot of telomerase activity to stop the genetic material from being lost during meiosis. The parents' genetic material is kept intact thanks to the high level of telomerase.The primary region of the chromosome, which contains the genes necessary for life, would become shorter without telomeres with each cell division. Telomeres thereby permit cell division without gene loss.
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Phylum Arthropoda is broken into subgroups which include both Arachnida (e.g., spiders) and Insecta (e.g., insects). As a result, Arachnida and Insecta most likely belong to which classification category
Phylum Arthropoda is broken into subgroups that include both Arachnida (e.g., spiders) and Insecta (e.g., insects). As a result, Arachnida and Insecta most likely belong to the class category.
All arthropods possess an exoskeleton, bi-lateral symmetry, jointed appendages, segmented bodies, and specialized appendages. The essential arthropod lessons can be separated with the aid of comparing their number of body areas, legs, and antennae.
All arthropods share those traits:
Exoskeleton. An exoskeleton is an assisting structure on the outside of the frame of an arthropod. Segmented bodies.Jointed appendages along with mouthparts and antennae.Bilateral symmetry. Dorsal blood vessel.Ventral nerve cord.Learn more about arthropods here: https://brainly.com/question/27145893
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Question 10 of 10
How does elevation affect climate?
A. It determines how much solar energy an area receives and thus how hot it will be.
B. It determines whether winds will blow inland bringing moist air, or towards the ocean bringing dr
OC. It determines whether winds will blow inland bringing moist air, or towards the ocean bringing dm
OD. It determines how dense the air is, and how much heat energy the air can hold.
Elevation determines how dense the air is and how much heat energy the air can hold. The correct option is D.
How does elevation affect climate?Elevation affects climate such that the higher one goes, the less dense the air is.
The less dense the air in a place is, the lower the amount of heat energy the air can hold.
This is why elevated places have cooler atmospheres when compared to sea levels.
Also, the higher one climbs, the cooler it becomes.
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Match the following terms and definitions.
1. a technique that uses rewards to increase a learned behavior
2.
a theory that behavior evolves to promote the greatest
fitness for the animal
long-term hormonal influences on animal behavior usually
occurring early in life
4. learning a behavior by observing and watching others
3.
organizational effects
social learning
operant conditioning
optimality theory
Explanation:
operant conditioning - a technique that uses rewards to increase a learned behavior
optimality theory -a theory that behavior evolves to promote the greatest fitness for the animal
social learning - learning a behavior by observing and watching others
organizational effects - long-term hormonal influences on animal behavior usually occurring early in life.
Hope it helps
If a set of genes is induced in the presence of the controlling substance, it is referred to as __________ control.
If a set of genes is induced in the presence of the controlling substance, it is referred to as positive control.
Genes are known as the basic unit of heredity. They contain a sequence of nucleotides which is responsible for the formation of a gene product that is functional.
The functional gene product is formed by the process of gene expression. In gene expression, there is first the formation of RNA from DNA by the process of transcription and then there is formation of a functional gene product by the process of translation from the RNA.
In the positive control, the expression of genes takes place only in the presence of a controlling substance that is known as an activator.
The set of genes are induced only in the presence of an activator, when there is positive control. The gene is not expressed in the absence of the controlling substance.
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A population of mussels was observed in a particular ecosystem. crabs have recently been observed occupying this ecosystem, which is a novel environment for this crab species. it was found that crabs preferred these mussels as their favorite food. a few of these mussels developed a thicker shell to protect themselves from crabs found in the region. which three statements does this adaptation suggest?
The correct statements are 1, 2, and 5 as they explain the adaptations that mussels developed to prevent their extinction and how this aided them in natural selection.
Crabs are omnivores. The smaller crabs can eat seaweed, worms, shrimp, algae, etc while the larger ones can eat mussels, snails, and squid. Crabs can change their feeding grounds because of environmental changes. Mussels being the prey of crabs were forced the development of new traits to ensure their survival. They started to produce thicker shells. This allowed the mussels with thicker shells to survive as they would not get eaten by the crabs, thus undergoing natural selection. The development of said trait improved the survival rate of mussels and prevented them from going extinct due to predation.
Note: The question seems to be incomplete and the options could have been
"A change in the environment led to a new distribution of traits in a population.The trait of shell thickening underwent natural selection.The trait for shell thickening will not be selected by future mussel generations.Half of the mussel population developed the trait while the other half did not.Mussels with the shell thickening trait had a greater chance of survival."Learn more about adaptations and natural selection here:
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The vesicle that originates from the Golgi apparatus and contains a variety of digestive enzymes is the ______. lysosome Inclusion ribosome centrosome magnetosome
The vesicle that originates from the Golgi apparatus and contains a variety of digestive enzymes is the lysosome.
What is the function of the lysosome?The lysosome is a spherical structure rich in enzymes. Lysosome is a cellular organelle found only in eukaryotic cells that acts in intracellular digestion, ensuring the degradation of materials captured by the cell, as well as the recycling of some cellular components (autophagy).
With this information, we can conclude that Lysosomes are cellular organelles, formed in the Golgi complex and full of digestive enzymes such as proteases, lipases and nucleases.
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Which type of training would most likely lead to increased levels of testosterone, insulin-like growth factors, and growth hormone
Overload training that is of a high intensity with limited rest periods would most likely lead to increased levels of testosterone, insulin-like growth factors, and growth hormone.
Roles and Integration for Cellular Development and Growth With Exercise:The integrated communication of numerous physiological systems that control cellular growth and development is substantially facilitated by hormones. Three important hormones—testosterone, the growth hormone superfamily, and the insulin-like growth factor (IGF) superfamily—are regarded as the "anabolic giants" in cellular growth and repair, though the precise hormonal influence must be taken into account in the context of the entire endocrine system and its relationship with other physiological systems. Glucocorticoids, particularly cortisol, must also be taken into account in addition to these anabolic hormones because they frequently have a profoundly opposing effect on human skeletal muscle anabolism.
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What type of amino acids would you expect to find at the core of a water-soluble globular (solid-spherical) protein
Hydrophobic amino acids are buried at the core of a water-soluble globular protein.
What makes globular proteins water soluble?Numerous hundreds to thousands of amino acids are used to make proteins. The arrangement of amino acids within a protein molecule determines its ultimate form. A protein molecule is classified into two classes—fibrous proteins and globular proteins—based on its final shape.
The structure of globular proteins resembles a ball or a globe. A globular structure is created by the folding of different amino acid chains. The two most significant globular proteins present in the human body are hemoglobin and myoglobin. The hydrophobic side chains of the amino acids are hidden inside the cores of the domains whereas the hydrophilic side chains are located on the surface of the molecule thanks to the arrangement of the amino acids.
The hydrophobic amino acids can be buried in the center of globular proteins due to interactions between the hydrophobic groups in their side chains. This is the fundamental property of globular proteins that makes them water soluble.
Examples of hydrophobic amino acids are phenylalanine, alanine, valine, etc.
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what is meant by acropetal succession?
Answer:
according to the internet: it refers to the arrangement of flowers, where the older flowers are present at the base and younger flowers are present at the highest point. in the centripetal succession, the younger flowers are present at the center and older flowers are present towards the periphery.
Explanation:
Explanation:
It is a type of inflorescence (pattern of arrangement of flowers) in which, younger flowers are present at the tip while older ones are located at the base. This type of succession is found in racemose inflorescence.With respect to recessively inherited disorders, why might it be a bad idea to marry your first cousin (genetically speaking)?
Marrying a first cousin might be a bad idea because a recessive trait that runs in the family may appear in the offspring of the union.
What are recessive traits?Recessive traits are traits which do not always appear in every generation except in the absence of the gene for the dominant trait.
Marrying a first cousin might be a bad idea because a recessive trait that runs in the family may appear in the offspring of the union.
In conclusion, recessive traits are might appear on.tg offspring of related individuals.
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Are humans considered creatures?
Answer:
yeah humans are considered creatures by other creatures
Explanation:
If you think aliens are abnormal just think that aliens think we're also aliens
or some new creature
list three to five possible sources that support your claim for the atricle you are not special, you are not exceptional"
The Sources that support your claim for the article you are not special, you are not exceptional"
Theatlantic.comtime.comYou Are Not Special Commencement Speech from Wellesley High School on You tube.‘You Are Not Special; You Are Not Exceptional’: by David McCullough Jr.’s on https://intellectualtakeout.orgThe ‘You Are Not Special Commencement Address’ on aei.orgWhat is the statement about?The statement of "are not special." was made at Wellesley High by their English teacher known as David McCullough Jr.
He was said to have told the graduates that they are not special and not also exceptional," as quoted. Some people do see McCullough’s remarks as a relevant quote.
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Question 3 (1 point)
Steve is studying conservatory biology and wants to use his career to advance better
environmental policies. Which of the following would help Steve carry out "policy for
science"?
O Gather other scientists who have come to the same conclusion(s) and introduce
those claims to government officials.
Base an experiment off of a law that was created to solve an ongoing problem.
Hypothesize the outcome of an election based on statistics.
Research laws that were created but that are now obsolete.
n 616
Steve would need to gather other scientists who have come to the same conclusion and introduce those claims to government officials.
Policy for SciencePolicy for science can be arrived at when scientists pitch the outcomes of their findings to the government. especially if the findings affect the country or its people at large.
As a conservation biologist, Steve will need to work hand in hand with other scientists in the same field. Together, they can then present their findings to the government and advise the government accordingly.
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which steps would you take to prevent the spread of germs from a sick person?
Answer:
Wash your hands before eating , or touching your eyes , nose or mouth.
Explanation:
Wash your hands after touching anyone who is sneezing , coughing or blowing their nose . Don't share things like towel , lipstick , toys or anything else that might be contaminated with respiratory germs.
WHAT IS GLYCOLYSIS? EXPLAIN IN BRIEF WITH SUITABLE FIGURE.
Answer:
Glycolysis is the metabolic pathway (process) that converts one molecule of glucose into two molecules of pyruvate. In the process the pathway forms two molecules of ATP and one molecule of NADH from two molecules of ADP and phosphate and one molecule of NADH.
The importance of glycolysis is that it provides the cell with a small amount of readily accessible energy in the form of ATP and it provides the mitochondria with a source of pyruvate. There, the pyruvate can be completely oxidized to CO2 and H2O and form a large amount (~28 molecules) of ATP from ADP and phosphate. More importantly, it provides red blood cells with there only source of ATP (since they have no mitochondria).