Answer:
C) P-wave
Explanation:
P waves travel the fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.
Describe what happens as a plant's turgor pressure increases and decrease AS MUCH POINTS AS I CAN GIVE
Answer:
Brainliest pls
Explanation:
Turgor pressure in plants. Turgor pressure within cells is regulated by osmosis and this also causes the cell wall to expand during growth. Along with size, rigidity of the cell is also caused by turgor pressure; a lower pressure results in a wilted cell or plant structure (i.e. leaf, stalk).
Turgor pressure in plants plays a key role in processes such as growth, development, mechanical support, signalling, flowering and stress response. Turgor pressure is an ideal means in plant cells through which the energy content of water molecules (water potential) can be adjusted quickly, within seconds.
people infected with hiv, the virus that causes the disease aids, can become unable to fight off infections by organisms that normally do not harm people. why is this so?
People infected with HIV, the virus that causes the disease AIDS, can become unable to fight off infections by organisms that normally do not harm people because: HIV weakens the immune system.
The virus does this by attacking and destroying CD4 cells (also known as T-cells), which are a type of white blood cell that is essential for defending the body against infections.
HIV invades CD4 cells and copies itself, which causes the cell to die. This process causes the body to lose CD4 cells, and without them, it is unable to fight off infections by other organisms. Without treatment, HIV can also spread to other organs and tissues in the body, causing further damage to the immune system.
Ultimately, this makes it difficult for people infected with HIV to fight off infections by organisms that usually do not cause any harm.
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Ribosomes are Group of answer choices important to protein synthesis only present when the cell divides the sex chromosomes found only in prokaryotes
The statement that is accurate in reference to ribosomes is that they are important to protein synthesis. Ribosomes are composed of RNA and proteins and are the primary sites of protein synthesis.
They can be found in both prokaryotes and eukaryotes. Hence, the correct option is: important to protein synthesis. Ribosomes are tiny cell organelles found in both prokaryotic and eukaryotic cells. Ribosomes are known for their function in protein synthesis. Ribosomes are made up of ribosomal RNA and proteins. Ribosomes are the sites where messenger RNA is translated into proteins.
The ribosome links amino acids together in the order that they appear in the mRNA molecule. This is done by catalyzing the formation of peptide bonds between the amino acids. The ribosome moves along the mRNA in a 5' to 3' direction. It reads the codons in the mRNA and translates them into a sequence of amino acids that make up the protein.
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How can meristematic tissue help in the growth in plants?
The tissues that are capable to aid the growth of plants is referred to as meristematic tissues. They are located at the tips of stems, roots, and branches. These undergo constant division to make new cells which causes plants to grow in height and width.
What are meristematic tissues?Plants have a variety of tissue named the meristem. It is made up of immature cells that can divide.
Cells in the meristem can differentiate into all of the various tissues and organs found in plants.
These cells divide indefinitely until they differentiate and lose the ability to divide.
Thus, in this way meristematic tissues helps in plant growth.
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which portion of the adrenal gland secretes epinephrine, norepinephrine, and a trace of dopamine? multiple choice question. adrenal cortex
Epinephrine, norepinephrine, and a very small amount of dopamine are secreted by the adrenal medulla component of the adrenal gland.
The triangle-shaped glands on top of the kidneys are known as the adrenal glands or suprarenal glands. Hormones produced by your adrenal glands regulate a number of vital bodily functions, including your immune system, blood pressure, stress response, metabolism, and others. The brain has some control over the adrenal glands.
The adrenomedullary gland consists of the medulla and cortex. The medulla generates catecholamines such as epinephrine and norepinephrine, whereas the cortex produces steroid hormones such as glucocorticoids, mineralocorticoids, and adrenal androgens.
The adrenal medulla produces the chemicals adrenaline (also known as epinephrine) and noradrenaline (also known as norepinephrine). These control blood pressure and heart rate and are essential in the stress response. They serve as neurotransmitters as well.
According to need, the body regulates corticosteroid levels. Early in the day tends to have substantially higher levels than later in the day. The levels of corticosteroids rapidly rise when the body is under stress due to disease or another factor.
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how the skin cells, neurons, muscle cells, and blood cells you have observed relate to the functions of skin, nerve, muscle, and blood tissue?
Answer:
All the type of cels perform different kind of functions that are specific to them.
Explanation:
Every cell has its own work to do but different cells may have different functions in multicellular organisms, cell with the same type of job often work together.
These groups of specialized cells from tissue in turn, the tissue often group together to form larger units called organs the heart is an organ; so is the stomach.
Explain why cells are the basic unit of living things
Answer: Cells make up the smallest level of a living organism such as yourself and other living things. The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.
Explanation:
Answer:
Cells make up the smallest level of a living organism such as yourself and other living things.
Explanation:
The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.
1. Many LDC countries are rapidly industrializing, greatly increasing resource use and pollution output. What should MDC's (us) do to mitigate the environmental and social cost of LDC's industrializing. Be specific in your recommendations. (3 marks) 2. Democracies depend on informed voters. Suggest several reasons why people do not listen/follow the news. Describe a solution to the problem of uninformed people (be realistic). (3. If a population of squirrels is 245, has a BR of 34/year, DR of 28/year, IR of 82/year and ER of 2/year, what would be the GR? What would be the population at the end of one year? Show your work.
1. To mitigate the environmental and social cost of LDCs industrializing, the MDCs could do the following actions: Collaborate and fund LDCs in building sustainable infrastructures with low carbon emissions.
Collaborate and fund LDCs in developing renewable energy infrastructures and technology. Share technology and knowledge on sustainability with LDCs.
2. There are many reasons why people do not listen to or follow the news. Some people feel overwhelmed by the amount of information, others do not trust the media, and some may not have access to reliable news sources. A possible solution to the problem of uninformed people could be to encourage media literacy and critical thinking in schools and universities. This would empower individuals to analyze and evaluate news sources and information. Providing free or low-cost access to reliable news sources and investing in investigative journalism could also help to combat misinformation. 3. Here are the steps to find the GR and the population at the end of one year.
GR = (BR + IR) - (DR + ER)= (34 + 82) - (28 + 2)= 86 - 30= 56 The population at the end of one year will be: P1 = P0 + B - D + I - E= 245 + (245 × 56/100) - (245 × 28/100) + (245 × 82/100) - (245 × 2/100)= 245 + 137.2 - 68.6 + 200.9 - 4.9= 509.6 ≈ 510Therefore, the population at the end of one year would be 510.
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____ is the species that plays an especially important role in its community so that major changes in its numbers affect the population of many other species in the community
A. Prey
B none of the above
c predator
D keystone
please answer quickly and be 100% sure its correct
Answer:
D. Keystone
Explanation:
Think of it from a bridge building perspective the keystone in an arc bridge was the tip or the highest point if that stone was pulled out all of the other stones would fall out with it, same goes for ecosystems if that one species declines dramatically or goes extinct then the rest of the population will proceed to do so as well
Which of the following describes a method of energy conservation?
O A. Driving a car with low fuel efficiency less often than before
O B. Switching to an appliance that has lower energy efficiency
O C. Driving a car with high fuel efficiency more often than before
XOD. Removing the insulation from a home before using the heater in winter
What is the original source of energy
Answer:
The Sun is basically the Sun is the original source of energy.
A species that has a very strong effect on an ecosystem is called:
Answer:
I think it is a KEYSTONE SPECIES
Hope this helps!
Explanation:
Explain two ways in which water’s properties help sustain life.
Answer:
Water is essential for all living things. Water's unique density, high specific heat, cohesion, adhesion, and solvent abilities allow it to support life.
Explanation:
Answer:
Two ways that water's properties help sustain life would be water’s high heat assists animals by helping regulate their body temperatures as they sweat or pant, and water is essential for all living things.
Explanation:
just took the test
Which is a possible description of a sedimentary rock?
A. contains fossils
B. sand, silt, or clay cemented together
C. contains halite minerals
D. all of these are possible
Answer:
D. all of these are possible
Explanation:
Sedimentary rocks contain fossils, have sand, silt, or clay cemented together, and contains halite minerals.
Answer:
D. all of these are possible.
Explanation:
Sedimentary rocks can contain fossils, as they are formed from the accumulation of sediment that may include the remains of plants and animals. They can also be formed from sand, silt, or clay particles that are cemented together. Sedimentary rocks can also contain minerals such as halite, which is a type of salt.
what is the concentration in pmol/ml, of high molecular weight dna with a concentration of 412.5ug/ml, given the length of the dna at 7250 nt? a. 17pmol/ul b. 1.7pmol/ul c. 0.017pmol/ml d. 0.17pmol/ml
the concentration in pmol/ml of high molecular weight DNA with a concentration of 412.5ug/ml given the length of the DNA at 7250 nt is 0.17 pmol/ml.
The answer to the question is 0.17 pmol/ml. The molecular weight of DNA is determined based on the number of nucleotides in it. So, first, we need to calculate the molecular weight of the DNA molecule given in the problem to determine the concentration of high molecular weight DNA. One mole of a substance is defined as the number of particles equal to Avogadro's number (6.02 x 1023). Therefore, we need to convert the weight of the DNA given to moles and then determine the number of moles per unit volume.
To get the molecular weight of the given DNA molecule, we have to use the formula:
Molecular weight = length of DNA * 650 g/mol (per nucleotide)
Molecular weight = 7250 nt * 650 g/mol
Molecular weight = 4,712,500 g/mol
Now, we need to convert the concentration of DNA from ug/ml to g/ml.
Given, Concentration = 412.5 ug/ml
Concentration in g/ml = (412.5 ug/ml) / (1,000,000 ug/g)
Concentration in g/ml = 0.0004125 g/ml
We can now calculate the number of moles per ml of the DNA solution as follows:
Number of moles/ml = Concentration (g/ml) / Molecular weight (g/mol)
Number of moles/ml = 0.0004125 g/ml / 4,712,500 g/mol
Number of moles/ml = 8.75 x 10^-11 moles/ml
Since we are looking for the concentration in pmol/ml, we need to convert the answer to pmol/ml.
Number of pmol/ml = (8.75 x 10^-11 moles/ml) / (10^-12 pmol/mole)
Number of pmol/ml = 0.875 pmol/ml
Therefore, the concentration in pmol/ml of high molecular weight DNA with a concentration of 412.5ug/ml given the length of the DNA at 7250 nt is 0.17 pmol/ml.
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how are trace fossils unique
show the activities of an organism and not the body
they showed the body of an organism not the activities
they are never fossils of dinosaurs
they are always fossils of dinosaurs
Answer: they showed the body of an organism not the activities
Explanation:
3. Which of the following is the reactant of photosynthesis?
Answer: i dont see a question but The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll,
Explanation:
im not sure if you need this but while the products are glucose (sugar), oxygen and water.
How is mitosis different in plants and animals?
Answer:
tyzhdtyhzftgh
Explanation:
xftghszertryh
Answer:
Explanation:
The most important and observable difference in the plant animal cells mitosis is the cytokinesis. In plants a new cell plate is formed between the daughter cells for the future cell wall, while in animal cells the cell membrane constricts to separates the parent cell into daughter cells.
How can an increase in the falcon population cause an increase in plant population ?
Explanation:
the eat what eats the plants
Answer:
Hawks might eat herbivore animals, meaning less plants will be eaten by them as there are less
Number of organisms per unit of living area
A) Population density
B) Dispersion
C) carrying capacity
D) population growth rate
Drag and drop each tissue or structure to the germ layer from which it is derived. Ectoderm Mesoderm Endoderm red blood cells central nervous system notochord kidney tubule cells thyroid follicular cells epidermis peripheral nervous system lung alveolar cells pancreatic acinar cells skeletal muscle
Ectoderm: central nervous system, peripheral nervous system, epidermis Mesoderm: notochord, kidney tubule cells, skeletal muscle Endoderm: red blood cells, thyroid follicular cells, lung alveolar cells, pancreatic acinar cells
I'll list the germ layers and their corresponding tissues or structures:
Ectoderm:
- Central nervous system
- Epidermis
- Peripheral nervous system
Mesoderm:
- Red blood cells
- Notochord
- Kidney tubule cells
- Skeletal muscle
Endoderm:
- Thyroid follicular cells
- Lung alveolar cells
- Pancreatic acinar cells
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What materials does cells need to transport
Answer:
one of them is protein but I am pretty sure there is more
Do the atoms that make up a rock move?
Consider this animal cell.
The organelles in an animal cell are labeled. Part F is a network of hollow tubes, flattened sheets, and round sacs.
What is the function of the organelles that are labeled F?
to temporarily store water, waste products, food, and other cellular material
to produce proteins for the cell
to move proteins and other substances through the cell
to contain digestive enzymes that break down waste material and debris in the cell
If im not wrong, its golgi body.
Golgy body giving enzyme to append protein to glycosaminoglycans,
it can store water,
produce protein and transport it or stored in the vesicles,
it also have haltened sacs.
Im sorry if im wrong
Answer: c, the rough and smooth ER
Explanation:
moves things through the cell
What medical conditions do scientists hope botulinum will help? Check all that apply. *
hyperactive muscles
Parkinson’s disease
cerebral palsy
common cold
Answer:
hyperactive muscles
Parkinson’s disease
cerebral palsy
Explanation:
aaag jus truss me
why is the hydrologic (water) cycle so important in ecosystems and for nutrient cycles on earth in general?
The hydrologic cycle is critical because it's far how water reaches flora, animals and us! except providing people, animals and plants with water, it also moves things like nutrients.
The hydrologic cycle is an extremely crucial manner as it enables the supply of water for all residing organisms and regulates climate patterns on our planet. If water didn't evidently recycle itself, we would run out of clean water, that's vital to life.
Pathogens and sediment in and out of aquatic The Hydrologic Cycle (also known as the Water Cycle) is the non-stop motion of water inside the air, at the surface of and underneath the Earth. This cycle is the trade of power which influences weather. when water condenses, it releases power and warms the surroundings.
Ecosystems the hydrological cycle of the earth is the sum overall of all tactics wherein water movements from the land and ocean surface to the atmosphere and again in form of precipitation.
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With only two foods available, natural selection has favored Flock which has grown the most in the
first three generations. Meanwhile, Flock Mhas declined the most because its beak was the least
successful phenotype for the food available.
( it’s Y and X)
Answer:
IT'S Y AND X
Explanation:
The question says so at the end :)
Flock X declines the most while natural selection has favored Flock Y the most. Hence, X and Y are correct.
What is natural selection?The process through which organisms adapt and change according to their surrounding is called natural selection. This theory was given by Charles Darwin. Individuals in a habitat are naturally different from each other. Some individuals have better traits to survive.
According to this theory, only those organisms will survive, which can change as their environment change, and can adapt. For example, the evolution of the long neck of giraffes to feed on leaves.
Flock Y has a strong beak for feeding due to which their chances of survival are maximum. While Flock X have a weak beak for feeding due to which their chances of survival are minimal. Therefore, X and Y are correct.
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whose experiment addressed the question of whether a genetic trait can be transferred from one bacterial strain to another?
The experiment that addressed the question of whether a genetic trait can be transferred from one bacterial strain to another was conducted by Frederick Griffith.
Frederick Griffith, a British bacteriologist, conducted an influential experiment in 1928 that explored the phenomenon of bacterial transformation.
In his experiment, Griffith worked with two strains of the bacterium Streptococcus pneumoniae, a virulent (smooth) strain and a non-virulent (rough) strain. He observed that when the heat-killed virulent strain was mixed with the live non-virulent strain and injected into mice, the mice developed pneumonia and died.
Upon examining the bacteria recovered from the mice, Griffith found that the non-virulent bacteria had been transformed into the virulent form.
Griffith's experiment demonstrated the transfer of a genetic trait, specifically the ability to cause disease, from one bacterial strain to another. This pivotal experiment laid the foundation for subsequent studies on bacterial genetics and the discovery of DNA as the carrier of genetic information.
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which example of weathering includes chemical change
Answer:
There are different types of chemical weathering that surround the changing of minerals into its components or into other minerals. The three main types are dissolution, oxidation, and hydrolysis. Dissolution Dissolution is the easiest form of the chemical weathering processes to see because it is the most common and obvious.
Explanation:
the portion of the respiratory system that is posterior to the nasal cavity and continues downward to behind the mouth
The first division, the nasopharynx (nas/o means nose and -pharynx means throat), starts below the nasal cavity and extends downhill to behind the mouth. Only the respiratory system utilizes this opening into the throat, which is used to transfer air.
Three areas make up the pharynx: The nasopharynx, which is only used as an airway, is located behind the nasal cavity. The palatine tonsils are located in the oropharynx, which is located behind the oral cavity. Air and food that has been swallowed move via the oropharynx and the laryngopharynx below. The pharynx serves as a cavity through which food and air move to the esophagus and larynx, respectively, and is situated posterior to the nasal and oral cavities.
The nasopharynx, oropharynx, and laryngopharynx are the three distinct parts of the pharynx. The back wall of the swallowing channel is called the posterior pharyngeal wall. When the mouth is opened, the soft palate, uvula, and tonsils can be seen, as well as the upper portion of the posterior pharyngeal wall. Mucosa is the first layer, followed by muscle and the cervical vertebral bodies.
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Correct Question:
What is the first division, posterior to the nasal cavity and continues downward to behind the mouth (nas/o means nose, and -pharynx means throat). This portion of the pharynx is used only by the respiratory system for the transport of air and opens into the oropharynx ?