4. What are the two cell types in xylem tissue? And where do they occur?
(draw a diagram showing each type)
Answers
Answer:
The two cell types in xylem tissue are tracheids and vessel elements. Xylem is a vascular tissue that helps in the transportation of plants. Tracheids are found in most gymnosperms, ferns, and lycophytes whereas vessel elements form the xylem of almost all angiosperms.
Xylem can be found in vascular bundles, present in non-woody plants and non-woody parts of woody plants.
Explanation:
The two cell types in xylem tissue are tracheids and vessel elements. Tracheids are found in most gymnosperms, ferns, and lycophytes, while vessel elements form the xylem of almost all angiosperms.
Tracheids are long, narrow cells with pointed ends. They have thick walls and are arranged in rows. Tracheids transport water and minerals from the roots to the leaves.
Vessel elements are shorter and wider than tracheids. They have thinner walls and are connected end to end to form long tubes. Vessel elements also transport water and minerals from the roots to the leaves.
Xylem tissue is found in the vascular bundles of plants. Vascular bundles are groups of cells that transport water, minerals, and food throughout the plant. Xylem tissue is also found in the secondary xylem of woody plants. The secondary xylem is the woody part of the stem or root that forms after the primary xylem.
Related Questions
History - Provide a brief overview of the evolution of quality in the U.S. healthcare industry.
Characteristics of Quality Evolution - Describe the characteristics of quality movement in the U.S. healthcare industry.
Process Improvement - Discuss the concept of process improvement and how it integrates into the quality movement.
Discussions and Critiques Investigate at least two real world examples of the quality evolution in U.S. healthcare industry. Discuss the impact of these examples had on the quality
Answers
The U.S. healthcare industry is a complex and diverse system that provides medical services, insurance coverage, and pharmaceutical products to the population.
Overview: The evolution of quality in the U.S. healthcare industry involves a shift from quality assurance to total quality management (TQM) and the adoption of initiatives like evidence-based medicine and patient-centered care. Regulatory measures, accreditation programs, and reimbursement models tied to quality outcomes have also played a role in shaping this evolution.
Characteristics: The quality movement in the U.S. healthcare industry is characterized by a patient-centric approach, continuous improvement, data-driven decision-making, and interdisciplinary collaboration. It prioritizes meeting patient needs and outcomes, fostering a culture of enhancement and evidence-based practices. Data and quality metrics are utilized to measure progress and identify areas for improvement. The engagement of all stakeholders, including healthcare professionals, administrators, patients, and payers, is emphasized to drive quality improvement efforts.
Process Improvement: Process improvement is an integral part of the quality movement in the U.S. healthcare industry. It involves optimizing workflows and systems to enhance efficiency and improve outcomes. Methodologies like Lean, Six Sigma, and PDSA cycles are commonly used to streamline processes, eliminate waste, and standardize best practices, leading to sustainable improvements in care delivery and patient outcomes.
Real world examples:
EHRs have improved healthcare delivery by enhancing accessibility and continuity of patient information, reducing errors, and enabling evidence-based decision-making.ACOs promote collaborative care coordination, preventive services, and population health management, leading to improved outcomes, reduced hospital readmissions, and increased patient satisfaction.Learn more about PDSA cycles here:
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Chemical reactions convert __ [ Select ] __ to __ [ Select ] __________. In nonliving systems, the presence of a(n) __ [ Select ] ________ allows the reaction to proceed very quickly and have a lower __ [ Select ] ________. In living systems, this function is carried out by proteins called __ [ Select ] ___________.Chemical reactions convert __ [ Select ] __ to __ [ Select ] __________. In nonliving systems, the presence of a(n) __ [ Select ] ________ allows the reaction to proceed very quickly and have a lower __ [ Select ] ________. In living systems, this function is carried out by proteins called __ [ Select ] ___________.
Answers
Answer:
1. Reactants to products
2. Catalyst
3. Activation energy
4. Enzymes
Explanation:
Chemical reactions involve the formation of substances called PRODUCTS from other substances called REACTANTS. The addition of certain substances called CATALYSTS to chemical reactions occuring outside living environment helps to spedeen up the chemical reaction by LOWERING ITS ACTIVATION ENERGY, which is the energy required to start the reaction.
However, within a living environment, molecules which act as catalyst called ENZYMES perform the same function of making reaction to proceed very quickly. Please find the answers to the omitted spaces in BOLD.
Chemical reactions convert [REACTANTS] to [PRODUCTS]. In nonliving systems, the presence of a(n) [CATALYST] allows the reaction to proceed very quickly and have a lower [ACTIVATION ENERGY]. In living systems, this function is carried out by proteins calledH [ENZYMES].
If each cycle of PCR doubles the amount of DNA synthesized in the previous cycle, then how much fold amplification will be achieved after 30 cycles?A. 10^9B. 10^12C. 10^6D. 10^15
Answers
If each cycle of PCR doubles the amount of DNA synthesized in the previous cycle, then the amount of fold amplification will be achieved after 30 cycles is 10^9. Hence, the answer is option A.
Polymerase chain reaction (PCR) is a method used in molecular biology to make many copies of a specific DNA segment. PCR employs a pair of primers that bracket the DNA segment of interest, denaturation of the double-stranded DNA by heat, and the addition of a thermostable DNA polymerase enzyme to the reaction to extend the primers using the nucleotides.
Each cycle of PCR doubles the amount of DNA synthesized in the previous cycle, which means that the amount of DNA produced doubles after each cycle. The amplification factor after n cycles of PCR would be 2n. The number of times that the DNA template is copied is equal to 2 raised to the power of the number of cycles.
Here, we have 30 cycles, so the total number of times the DNA is amplified will be 230 = 1,073,741,824.
Therefore, the amount of fold amplification will be achieved after 30 cycles is 10^9.
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how an atom change if all of its electrons are removed
Answers
Answer:
If all the electrons of an atom are removed, it will change to become a positively charged ion called a cation. Additionally, the loss of all of its electrons means there is no negative charge to balance the positive charges of the protons.
Explanation:
Freda grows potted plants outside in the summer. When the weather is very hot, her plants need to be watered every day to keep them from wilting.
For a class project, Freda designed a system that would automatically water her plants at 10:00 p.m. on days when the temperature reached 90°F. These are the steps she followed to design it:
Freda researched automated watering systems.
She brainstormed different solutions, then chose that one that she thought would work the best.
She sketched a design of the system and listed the equipment she would need to build it.
Next, Freda wanted to build her system, but she discovered that she could not afford to buy all the materials.
What mistake did Freda make in her design process that kept her from completing her project?
A.
She did not communicate her solution to others.
B.
She did not account for cost constraints in her solution.
C.
She did not evaluate her product in order to improve its design.
D.
She did not include measurements in her design sketch.
Answers
Answer:
B.) She did not account for cost constraints in her solution.
Explanation:
She did everything right except for B.
If we are planning on building something that requires materials we don't already have, we should research the cost of the materials, and our budget.
Hope this helped :)
If a molecule has four hybrid sp3 orbitals, it can be concluded that the molecule has a
trigonal planar molecular
trigonal planar electron domain
tetrahedral molecular
tetrahedral electron domain
Answers
If a molecule has four hybrid sp3 orbitals, it can be concluded that the molecule has a tetrahedral electron domain. That is option D.
What is hybridisation in chemistry ?Hybridisation is defined as a concept in chemistry that leads to the formation of new hybrid orbitals through the combination of atomic orbitals.
The shape of a hybridised orbital depends on its type which include the following:
sp – Hybridisationsp² – Hybridisationsp³ – HybridisationThe sp³ orbitals is the type of hybridisation that required when an atom is surrounded by four groups of electrons.
The shape of the sp3 orbitals are usually tetrahedral electron domain because of its arrangement whereby the orbitals are oriented at bond angle of 109.5° from each other.
Therefore, the four hybrid sp3 orbitals, is a molecule that has tetrahedral electron domain.
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what technology was used to map features on the seafloor? -Echo sounding
-plate tectonics
-eutrophication
-transducer
Answers
Answer:
Echo sounding
Explanation:
Echo sounding is the key method scientists use to map the seafloor today. The technique, first used by German scientists in the early 20th century, uses sound waves bounced off the ocean bottom.
Can you tell the difference between electromagnetic and mechanical waves?
In a mechanical or compression wave, the particles of the medium are displaced in a direction
perpendicular to the direction of energy transport.
A wavelength: in a transverse wave it can be measured from crest to crest; in a mechanical wave, from
compression to compression.
A thunderstorm! Lightning and thunder and rain! You hear the thunder before you see the lightning
because sound travels faster than light through the air.
Dolphins slap the wave to send messages because sound travels faster through water than through ain
Sound waves are transferred by the compression of particles. The closer the particles are to one another
the faster the energy is transferred. Therefore, sound energy directly depends upon the density of the
medium
Signals traveling through space must be in the form of electromagnetic waves rather than sound waves
Answers
Answer:
Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.
Explanation:
what processes convert water into vapor
Answers
Answer:
evaporation
Explanation:
science
The guard at the entrance of a building is like the _________ of a cell.
Answers
Answer:
Cell membrain
Explanation:
Because it's the first thing in the cell
The guard at the entrance of a building is like a cell membrane of the cell.
What is the function of the cell membrane?
Every live cell has a cell membrane, also known as the plasma membrane, which separates the cell from its surroundings. The components of the cell, which are frequently big, water-soluble, highly charged molecules including proteins, nucleic acids, carbohydrates, and chemicals involved in cellular metabolism, are enclosed by this cell membrane (also known as the plasma membrane).
Ions, acids, and alkalis that are harmful to the cell, as well as nutrients that the cell must take up in order to survive and thrive, are all present outside the cell in the surrounding water-based environment.
Therefore, the cell membrane serves two purposes: first, as a barrier keeping the components of the cell in undesired things out, and second, as a gate permitting the passage of vital nutrients into the cell and the movement of waste products out of the cell.
Therefore, the cell membrane is like the guard at the entrance of a building.
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Provide an example of how fats help living organisms survive:
Answers
Program: Pregnant women dealing with anxiety & depression during growth of fetus
Dissemination: How will your evaluation report be used? who is the audience of the evaluation report? which firmats and channels will be usef to disseminate the evaluation findings to the appropriate audience?
Answers
The evaluation report on pregnant women dealing with anxiety and depression during the growth of the fetus will be used to provide valuable insights, recommendations, and findings to various stakeholders involved in maternal healthcare and mental health support.
The primary audience for the evaluation report would include:
Healthcare professionals: Obstetricians, gynecologists, and mental health specialists who are directly involved in providing care and support to pregnant women.
Policy-makers and government agencies: Individuals responsible for developing policies and guidelines related to maternal health and mental well-being during pregnancy.
Non-profit organizations and advocacy groups: Organizations working towards improving maternal healthcare and mental health support for pregnant women.
To disseminate the evaluation findings effectively, a variety of formats and channels can be utilized:
Written report: A comprehensive evaluation report can be prepared, presenting the methodology, findings, recommendations, and conclusions. This report can be made available in digital and print formats.
Presentations: Key findings and recommendations can be summarized and presented at conferences, seminars, and workshops attended by relevant stakeholders.
Webinars and online platforms: The evaluation findings can be shared through webinars, online workshops, and dedicated platforms for healthcare professionals and researchers.
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What sediments are moved to create stalactites?
Answers
Limestone rock sediments create stalactites.
What are stalactites ?They are icicle-shaped deposits that appear where water has dissolved limestone above and subsequently placed calcium carbonate along cave ceilings or floors. In ceilings, stalagmites grow and hang downward.
How stalactites are formed ?Chemical sedimentary rocks are produced as a result of precipitation or the development of new minerals in water. Large sedimentary structures like stalactites and stalagmites, which grow in caves, can be produced by precipitation.
When rainwater drips through limestone rock, stalagmites and stalagtites are created. According to the National Park Service, it gathers up carbon dioxide as it travels by from the air and whatever organic materials it passes as it drips down.
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Can 2 objects made from exactly same substance but different shape or size have the same density? Make a graph
Answers
Yes, 2 objects made from exactly same substance but different shape or size have the same density.
How is it possible for items to have varying sizes but the same density?A substance's density is typically independent of its size, both large and small, and independent of its shape. Despite having distinct masses and volumes, a gold brick and a statue both have the same density. A substance's density is generally understood to be its mass per unit volume.
Therefore, object with the highest density will be the smaller of two things if they both have the same mass but differ in size. So one can say that two things have comparable densities if they have the same mass.
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Please help 100 points
What units will you use to collect your data?
“How does the color of light affect plant growth?”
Answers
Answer:
It is important to carefully consider the units you will use to collect data when conducting a scientific experiment. In the experiment described, "How does the color of light affect plant growth?", there are a few different options for units that you could use to collect data. Some examples of units that might be relevant for this experiment include:
Length: You could measure the length of the plants at different points during the experiment to track their growth over time.
Width: You could also measure the width of the plants, either at specific points along their stems or by measuring the diameter of the entire plant.
Height: Alternatively, you could measure the height of the plants from the soil surface to the top of the highest leaves.
Mass: You could also measure the mass of the plants, either by weighing them on a scale or by using a balance to measure their weight.
Almost all of the food we eat is sold fresh.
a. True
b. False
Answers
Answer: most definitely false
Explanation:most definitely false
An organism that gets its energy by eating other organisms?
heterotroph
producer
autotroph
herbivore
Answers
Answer:
heterotroph
Explanation:
An organism that is dependent on the other organisms for the sake of food are called as heterotrophs. These organisms rely on the other organisms for food.
What are decomposers ?These are the organisms that feed on the dead and the decay matter where they are totally living on this dead matter.
Heterotrophs are the species that are dependent on the another organisms. They can be both herbivores and carnivores. For example in a case we herbivores are dependent on the plants and the plants sources for food thus we are called as heterotrophs.
Autotrophs and the producers that create their own food and not only that but the species that are able to make their own food with the help of the photosynthetic units they are having in their body.
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Identify the recessed area surrounding the crista galli
The olfactory nerve
Cribriform plates
Perpendicular plate
Answers
The recessed area surrounding the crista galli is known as the cribriform plates.
These plates form the roof of the nasal cavity and are part of the ethmoid bone. They have numerous tiny holes called olfactory foramina that allow the olfactory nerve to pass through from the nose to the brain. The olfactory nerve is responsible for the sense of smell. The cribriform plates also separate the nasal cavity from the cranial cavity. The perpendicular plate of the ethmoid bone is a thin, flat bone that projects inferiorly from the cribriform plates. It forms part of the nasal septum, which divides the nasal cavity into two halves.
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what are the 3 uses of ATP?
Answers
Answer: ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis.
Explanation:
100!!! POINTS!!!!
On the map, take a close look at the boundary along southern California and Mexico’s Baja California Peninsula. The arrows on the map show the direction and speed of the plates along this boundary in millimeters per year. Based on the speed and direction of the arrows, identify the type of plate boundary at this location. Which landforms or events are likely to occur there as a result? (Hint: It may be helpful to model the motion of the plates using your hands or pieces of paper.)
Answers
Explanation:
Thus, at convertgent boundries, continental crust is created and oceanic crust is destroyed. Two plates sliding past each other forms a transform plate boundry
The area around the convergent boundries, continental crust is created then the oceanic crusts were destroyed.
What are land forms?The term land form is used to describe the physical features that describe the geography of any particular area.
Looking at the map, in the area around the convergent boundries, continental crust is created then the oceanic crusts were destroyed.
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Why do some people get more sick from bacteria and viruses than others?
Answers
Explanation:
Weaker Immune systems/Compromised Immune systems.
Answer:
virus and bacteria make people sick because virus disrupting cell functions and bacteria cause diseases in some infections like pneumonia and diarrhea
Explanation:
True or false, when you eat (like when you eat lunch) the energy in your food that you are getting is stored as thermal energy in the food? True False
Answers
The fact that modern Native Americans share certain genetic markers with indigenous populations insouthern Siberia, but not with others, is evidence thatthe ancestors of modern Native Americans migrated from Siberia to the Americas.Chimpanzees have DNA sequences in their genome that are not present in the human genome.the human genome has many duplicated regions compared to the other primate genomes.
Answers
The fact that modern Native Americans share certain genetic markers with indigenous populations in southern Siberia, but not with others, is evidence that the ancestors of modern Native Americans migrated from Siberia to the Americas. (True)
Chimpanzees have DNA sequences in their genome that are not present in the human genome. (True)
The human genome has many duplicated regions compared to the other primate genomes. (True)
This statement is supported by genetic research that shows that Native Americans share certain genetic markers with indigenous populations in southern Siberia. However, they do not share these markers with other indigenous populations from other regions. This suggests that the ancestors of Native Americans likely migrated from Siberia to the Americas.
Chimpanzees do have DNA sequences in their genome that are not present in the human genome. For example, chimpanzees have a section of DNA on the X chromosome that is not found in humans.
The human genome has many duplicated regions compared to the other primate genomes. This is due to a process called gene duplication, which occurs when a gene is copied and the copies are scattered throughout the genome. This process has played an important role in the evolution of the human genome and has contributed to the development of new genes and functions.
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Full Question: The fact that modern Native Americans share certain genetic markers with indigenous populations in southern Siberia, but not with others, is evidence that the ancestors of modern Native Americans migrated from Siberia to the Americas. (Choose True/False)
Chimpanzees have DNA sequences in their genome that are not present in the human genome. (Choose True/False)
The human genome has many duplicated regions compared to the other primate genomes. (Choose True/False)
eukaryotic cells vc prokaryotic cells.
Answers
Eukaryotic cells are cells with a nucleus and membrane-bound organelles such as mitochondrion, chloroplast, and lysosome.
Prokaryotic cells, on the other hand, are much simpler and smaller cells when compared to eukaryotic cells. The cells are also without a nucleus nor membrane-bound organelles.
Both eukaryotic and prokaryotic cells have plasma membranes and ribosomes that function in the maintenance of homeostasis and as sites of protein synthesis respectively.
Some eukaryotic cells such as the plant cells have cell walls just like the prokaryotic cells. Both cells have DNA, in addition to other biomolecules, which serves as a store of genetic information.
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What is the term that scientists use when comparing the properties of solids liquids and gases
Answers
Answer:
The State of Matter
Explanation:
Can someone help pleasee!!!
Answers
Answer:
Its probably a pine tree. with the characteristics
Explanation:
The percentage of water in an animal cell?
Answers
Answer:
75 percent of water in the animal cell
Which of the following exhibits a spiral symmetry? * little florets on the head of a sunflower typhoon nautilus shell all of the above None of the given choices
Answers
All of the given choices exhibit spiral symmetry among which little florets on the head of a sunflower, typhoon, and nautilus shell exhibit spiral symmetry.
Symmetry is a way of classifying objects that can be divided into smaller components that are identical to the original. Symmetry is one of the most fundamental and important principles of nature that is found in nature in various forms. Spiral symmetry can be described as an object that has a repeated pattern that rotates around a central point. Spiral symmetry is a type of symmetry that is often seen in nature. In spiral symmetry, the object appears the same when rotated about an axis through a fixed point.
Little florets on the head of a sunflower exhibit spiral symmetry. The arrangement of seeds on the head of a sunflower is an example of spiral symmetry. Typhoon exhibits spiral symmetry. A typhoon is a large weather system that exhibits spiral symmetry as it rotates around a central eye.
The Nautilus shell exhibits spiral symmetry. The spiral-shaped shell of the nautilus is another example of a naturally occurring spiral pattern that demonstrates symmetry. All of the given choices, i.e., little florets on the head of a sunflower, typhoon, and nautilus shell exhibit spiral symmetry. Hence, the correct option is "All of the above".
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what cells/organisms does the spongy parenchyma cell interact with and how
Answers
Answer:plasma cell
Explanation:
What must happen for a hypothesis to become a theory?
A. It must be well-tested and have supported results every time.
B. All possible alternative hypotheses must be tested first.
C. A hypothesis must be published and tested by scientists for a decade before it is a theory.
D. A theory is developed only after a hypothesis has been refuted and changed.
Answers
Answer:
A.it must be well-tested and have supported results every time
Answer:
Explanation:b