Answer: Yes.
Explanation: Prescribed burning activity where fire is applied generally to most or all of an area within well defined boundaries for reduction of fuel hazard, as a resource management treatment, or both.
The statement "does fire have a defined boundary" is absolutely true.
What is a Fire?Fire may be defined as a circumstance, procedure, or instance of the burning of fuel or another material that is being ignited and significantly combined with oxygen, liberating light, heat, and flame.
Such types of fire activities generally possess definite boundaries in order to reduce the fuel that is significantly hazardous for the survival of the living organism.
Apart from this, a fire is initiated under full control as well as the management of an external team for regulating the extreme resource utilization, the level of destruction, absolute treatment of resources, and their treatment.
It may also be thought that the activity of fire is one of the most dangerous for the lives and properties of all sorts of living organisms.
Therefore, the statement "does fire have a defined boundary" is absolutely true.
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The portion of the membrane system in eukaryotic cells that is responsible for the making lipids and breaking down toxic substances is the
Answer:
Smooth endoplasmic reticulum
Explanation:
The endoplasmic reticulum is a series of interconnected channels running throughout the cytoplasm. Some endoplasmic reticular have granules called ribosomes on their surfaces. The smooth endoplasmic reticulum are more specialized responsible for synthesizing and transportation of Lipids and breaking down of toxic chemicals from all parts of the cell.
Answer:
Smooth endoplasmic reticulum Or Smooth ER
Explanation:
I was just asked this on USA test prep.
During a biology lab, students recorded that number of times an onion cell was was in each phase of the cell
cycle. The data is shown.
Interphase-461
Prophase-12
Metaphase-2
Anaphase-2
Telophase-3
Which phase/phases accounted for less than a half percent of the number of onion cells separately?
Answer:
b
Explanation:
Answer:
The correct answer is option B) "Metaphase and Anaphase".
Explanation:
According to the notes of the biology lab, the total number of onion cells is 480 (461 + 12 + 2 + 2 + 3). Therefore, half percent of 480 corresponds to 2.4 (480 * 0.005). Since in each case the number of onion cells that were in the Metaphase and Anaphase were only 2, these two phases accounted for less than a half percent of the number of onion cells separately.
Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. How would the discovery of the human genome contribute to this process?
Answer:
The correct option is "the exact location of a particular disease-causing gene can be determined."
Explanation:
The discovery of the human genome will let us know the sequence of normal genes in a human. By comparing to this sequence, one can easily know if there is any abnormality in the fetus. The exact location where a fault has occurred can be recognized if the sequence of the normal human genome is known. Hence, the discovery of the human genome is very beneficial to the process of amniocentesis.
What absorbs more carbon dioxide the atmosphere or oceans?
The oceans absorb more carbon dioxide than the atmosphere.
Explanation:
Oceans are absorbers of atmospheric carbon dioxide. Like in the terrestrial environment ocean animals take in oxygen and release carbon dioxide and ocean plants perform photosynthesis by absorbing carbon dioxide and releases oxygen.
Various human activities like burning of fossil fuels and several industrial activities cause the release of carbon dioxide in large amounts into the atmosphere which harms the earth and its inhabitants.
About one-fourth of the carbon dioxide produced in the atmosphere is absorbed by the oceans of the earth. Oceans are the carbon sink of earth. Absorption of carbon dioxide makes the ocean acidic which causes harm to several ocean beings.
How does increasing and decreasing heart rate impact blood delivery, oxygen need, blood pressure, body temperature and glucose level?
Answer:
Homeostasis regulates heart rate by increasing heart rate when cells need more oxygen and decreasing heart rate when they need less oxygen.
Explanation:
Question: Name the four major organic compounds that
make up your body. What is the role of each in your body
and what is the basic unit of each compound?
Answer:
Carbohydratesproteinslipidsnucleic acidsExplanation:
Carbohydrates are compounds made up of carbon, hydrogen and oxygen(Glucose). They are sources of energy as they are broken down during respiration to release energy. They are storage forms of food and components of structures that provide mechanical support in organism.
Proteins are compounds made up of small units called amino acids. Proteins are components of structures in living organisms, important as metabolic regulators and are broken down to release energy in extreme starvation.
Lipids are compounds made up of fatty acids and glycerol. They are a source of energy for they are oxidised to release energy, are constituents of plasma membrane and protoplasm and act as heat insulators.
Nucleic acids are polymers made up of nucleotides. They store genetic information in a coded form.
a student wants to develop a model demonstrating how transplants can save lifes. The group of tissues that removes wastes and toxic matter from the blood is diseased in a patient . What type of lifesaving transplant would the patient require ?
Answer:
b
Explanation:
A patient with diseased tissues that remove wastes and toxic matter from the blood would require a kidney transplant. Matching a donor is essential to prevent immune rejection, and scientists are exploring growing organs from the patient's own cells to avoid this issue.
The group of tissues that removes wastes and toxic matter from the blood is primarily the kidneys. When these tissues are diseased, the patient would typically require a kidney transplant to replace the failing kidneys. For an individual requiring a transplant, finding a matching donor is crucial to prevent tissue rejection. This is due to the immune system potentially destroying the donor cells, recognizing them as foreign. Patients receiving bone marrow transplants, for instance, must have their own diseased marrow destroyed beforehand, and then donor stem cells are intravenously infused. However, in the case of a kidney transplant, the procedure involves connecting a donated kidney to the recipient's blood vessels and leaving the diseased kidneys in place if they're not causing complications.
Dialysis is an alternative treatment that filters blood using a machine, but it is not a cure for kidney failure. For patients with end-stage kidney disease, a kidney transplant is the ideal alternative to long-term dialysis. The main obstacle with transplantation is finding a donor that matches the patient's human leukocyte antigens (HLAs), which are critical for reducing the risk of rejection.
List four catastrophic events:
Answer: avalanche, earthquake, flood, forest fire, hurricane, lightning, tornado, tsunami and volcanic eruption.
Explanation: Here extra catastrophic events
Answer:
Hurricane Katrina , the indian ocean tsunami,
Pangaea , and a volcanic eruption
Which list below describes the next steps of evaporated water through the water cycle?
A) Condensation, precipitation, runoff, ocean storage
B) Transpiration, condensation, precipitation, ocean storage
C) Precipitation, condensation, runoff, groundwater
It most likely is B or C idk tho
Answer:
b
Explanation:
it doesnt condensate after precipitation in c
how does indicate that a. dog is more closely related to a red fox than a house cat?
Answer:
Dog is more closely related to a red fox than a house cat according to a taxonomy level.
Explanation:
Dog, red fox, house cat is in the same kingdom Animalia, same phylum Chordata, same class Mammalia, same order Carnivora but the family of red fox and the gad is same i.e. Canidae but the family of the house cat is Felidae. The red fox and dog have more taxon in common. The house cat diverges at the family level.Which of the following statements about stars is true?
A.) All stars are the same temperature
B.) None of these
C.) Stars rarely differ in temperature
D.) Stars vary greatly in temperature
Answer:
The correct option is D) Stars vary greatly in temperature
Explanation:
The temperature range for different type of stars varies from 3,000 Kelvin to 50,000 Kelvin. A red star is generally considered to be a lot cooler than a blue star or a white star. The stars which are bigger have more energy and usually have very high temperatures. The smaller stars are smaller star has less energy and has low temperatures. Hence, we can say that stars vary greatly in temperature.
Answer:
is D for a comman fact
Fill in the blank.
1. Increasing temperatures in the atmosphere have caused the temperature of the oceans to _____,leading to more powerful tropical storms.
2. Approximately 25% of carbon dioxide emitted into the atmosphere is absorbed in the________
3. _____treatment is critical to removing pollutants from contaminated water by using
physical, chemical, or biological processes.
4. Water pollution can come from the ____ of dead organic matter or animal waste in
waterways.
5. Water pollution increases the amount of salinity and slows down major ocean______that are
responsible for regulating Earth's climate.
Respond to the following based on your reading.
6. Describe steps that can be taken to improve water quality through water conservation
Answer:
increase
oceans
wastewater
decomposition
currents
Individuals can control their use of water. Governments can help conserve water by encouraging farmers to plant climate-resistant crops that require less water. Switching to newer alternative energy technologies can reduce water used in fossil fuel and nuclear power plants for cooling.
Explanation:
The branch of science which deals with a living being is called biology.
The current question is fill in the blanks. The correct answer is as follows:-
Increasing temperatures in the atmosphere have caused the temperature of the oceans to increase , leading to more powerful tropical storms. Approximately 25% of carbon dioxide emitted into the atmosphere is absorbed in the oceansWater waste treatment is critical to removing pollutants from contaminated water by using Water pollution can come from the physical and biological waste of dead organic matter or animal waste in waterways.Water pollution increases the amount of salinity and slows down major ocean decomposition that are responsible for regulating Earth's climate
The amount of drinking water is limited on the earth. As the population increases the water will be deficient for every species.
The only way to resolve this issue is to conserve the water in all possible ways out. Water conservation help in increasing the water amount use for daily chores and the extra water is can be used by the deficient person.
Hence, these are the answer to the following.
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____________ is the principal compounds that living things use for energy
The leaves of deciduous plants are broad, flat and designed to facilitate
photosynthesis. We know that plants need carbon dioxide and water in the
presence of light for photosynthesis to occur. We also know that plants take in
water through there roots and that water travels through xylem to reach the
leaves. These broad, flat leaves also facilitate transpiration, the loss of water through leaves. When subjected to a dry, hot environment, plants attempt to maintain homeostasis by
Answer:
Closing of stomata to reduce transpiration.
Explanation:
What holds base pairs together? a pairs of double-ringed nucleotides b sugar-phosphate backbones c hydrogen bonds d nitrogen-carbon bonds
In DNA, base pairs are held together by hydrogen bonds. Adenine and thymine are connected by two hydrogen bonds, while cytosine and guanine are connected by three. Sugar-phosphate backbones and nitrogen-carbon bonds do not hold the base pairs together.
Explanation:In DNA, base pairs which consist of double-ringed nucleotides, are held together by hydrogen bonds. The base pairs adenine (A) and thymine (T) are held together by two hydrogen bonds, while the base pairs cytosine (C) and guanine (G) are connected by three hydrogen bonds. These hydrogen bonds allow these base pairs to hold together, providing DNA its double helix structure.
It should be noted that sugar-phosphate backbones form the outer sides of the DNA helix but do not hold the base pairs together.
Similarly, nitrogen-carbon bonds are present in the bases and the sugar molecule but these are not responsible for the bonding of the base pairs. They exist in the individual nucleotides and not in the double-ring structure formed by base pairs.
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In DNA, the base pairs (adenine with thymine, and guanine with cytosine) are held together by hydrogen bonds. It's not the sugar-phosphate backbone or any other components that keep the base pairs connected.
Explanation:The base pairs in DNA are held together by hydrogen bonds. Specifically, in the double helical structure of DNA, composed of nucleotides, adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). Each of these base pairs is bound together by hydrogen bonds with A and T sharing two hydrogen bonds, and C and G sharing three.
The sugar-phosphate backbone of the DNA strand, consisting of alternating sugar and phosphate groups, is external to the base pairs and provides structure to the DNA molecule. However, these backbones do not hold the base pairs together.
So, between the options provided, the answer is c) hydrogen bonds hold the base pairs together in DNA.
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Which of the following is the rigid, solid layer of the upper mantle that is connected to the crust? (3 points)
Asthenosphere
Atmosphere
Lithosphere
Mesosphere
Answer: The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The lithosphere is the outermost mechanical layer of the Earth. The lithosphere is about 100 kilometers thick.
Explanation:
Answer: Lithosphere is the rigid, solid upper mantle connected to the crust. It is 200 kilometers thick. Temperatures at this layer are less than 1,300 degrees Celsius.
Water concentrates water-soluble human waste products. True or false?
Answer:
the answer is true.
Water concentrates water-soluble human waste products.
Which is true regarding all X-linked disorders?
Group of answer choices
they result in a longer lifespan
they are caused by mutations of the X chromosome
they are linked to an unknown chromosome
they are disorders that affect only women
Answer:
they are caused by mutations of the X chromosome
Explanation:
The X chromosome contains many genes in addition to those that determine sex. Certain hereditary defects determine by recessive genes are linked to the X chromosome. The disorders are caused by mutations of the X chromosomes.
Why did the development of vascular systems help plants move to land
Answer:
During evolution, plants have acquired a vascular system, which has greatly contributed to the success of land plants. The vascular system allows plants to rapidly transport water and nutrients over long distances between roots, growing deeply in soil, and shoots, growing upward toward the sun.
Answer:
It made it possible to move water within the plant structure.
Explanation:
The evolution of plants occurred, mainly, after atmospheric changes due to the release of oxygen by autotrophic organisms. Thus, the first species to colonize the terrestrial environment were bryophytes and mosses, and the main characteristic that facilitated colonization after the formation of multicellular organisms was the formation of epidermal tissue and structures that guaranteed protection against water loss, the movement of water within the plant.
In the Paleozoic period, the first plants with vascular systems emerged, which developed from the first plant groups that colonized the terrestrial environment. The vascular system is composed of xylem and phloem which are the vessels that conduct nutrients and water within the plant.
About 400 million years ago, ancestral plants went through several events of adaptive irradiation, and diversified into the different species that we know today. These adaptive events were fundamental for the colonization of the terrestrial environment, so that diverse environments with adverse conditions were colonized by the plants.
After the appearance of sap-carrying vessels, plants evolved and tall species emerged that constituted the first forests, even at the end of the Devonian period.
Most of the plants survived the extinction events of the Triassic period, however, the environmental and atmospheric changes may have caused more evolutionary events, mainly in relation to the formation of flowers and fruits, which exponentially increased the biodiversity of terrestrial flora from the period Cretaceous.
In addition to the morphological and physiological changes over evolutionary events, another important process in the evolution of plants is reproduction and, indirectly, dependence on water for this process.
The central dogma of molecular biology is that DNA is transcribed into mRNA, which is than ____ to protein.
a. Transferred
B. transduced
C. Transformed
D. Translated
Answer:
D. Translated
Explanation:
The central dogma of molecular biology is that DNA is transcribed into mRNA, which is than Translated to protein.
What is Central dogma principle?The central dogma of molecular biology is a theory stating that genetic information flows only in one direction, from DNA, to RNA, to protein, or RNA directly to protein.
Francis Crick created the key dogma's underlying theory in 1958. His interpretation incorporated the idea that information does not transfer from proteins to nucleic acids and was a little more all-encompassing. Since then, researchers have found a number of deviations from the idea.
Prions are one famous example in particular. Prions are contagious proteins that can multiply without using intermediates like DNA or RNA.
Therefore, The central dogma of molecular biology is that DNA is transcribed into mRNA, which is than Translated to protein.
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Carlos is studying different types of transport in cells. He learns that osmosis is a type of passive transport involving water molecules. Which statement correctly describes passive transport?
A.
molecules move from a lower concentration to a higher concentration
B.
all of the molecules outside a cell membrane move into the cell
C.
molecules cross the cell membrane without the use of energy
D.
all of the molecules outside a cell use energy to cross the cell membrane
Answer:
C.
Explanation:
passive transport does not require energy to be used, and it goes from a higher to a lower concentration.
Answer:
C = molecules cross the cell membrane without the use of energy
Explanation:
One way that cells maintain homeostasis is through passive transport. In this process, small molecules and ions cross the cell membrane without the input of energy from the cell.
A paramecium is a single-celled, freshwater protist that lacks a cell wall but contains a contractile vacuole. The contractile vacuole is surrounded by rings of proteins that can contract when the vacuole is filled with water, expelling the water from the paramecium. What would happen to a paramecium placed into a freshwater aquarium that has been treated with a chemical that disrupts the function of the contractile vacuole?
A) The paramecium will balance its water levels with exocytosis of water droplets through its membrane.
B) The paramecium will expel sodium ions from its cytoplasm to allow less water to enter through its membrane.
C) The paramecium will lose water to the environment without the ability to regulate its water levels, resulting in cell death.
D) The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis.
Answer:
D
Explanation:
This is coming straight from USAtestprep, The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis.
The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis. Thus, option D is correct.
What is paramecium?A paramecium is a single-celled, freshwater protist that lacks a cell wall but contains a contractile vacuole. The contractile vacuole is surrounded by rings of proteins that can contract when the vacuole is filled with water, expelling the water from the paramecium.
When the paramecium placed into a freshwater aquarium that has been treated with a chemical that disrupts the function of the contractile vacuole than the paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis.
The paramecium will balance its water levels with exocytosis of water droplets through its membrane.The paramecium will expel sodium ions from its cytoplasm to allow less water to enter through its membrane.The paramecium will lose water to the environment without the ability to regulate its water levels, resulting in cell death.
Therefore, The paramecium will gain water in the hypotonic environment and will be unable to regulate its water levels, resulting in lysis. Thus, option D is correct.
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What is the difference between amino acids and carbohydrates?
A portion of the periodic table is shown below:
Which element has the electron configuration 1s22s22p63s23p3?
A. Nitrogen (N)
B. Oxygen (O)
C. Phosphorus (P)
D. Sulfur (S)
Answer:
C. Phosphorus (P)
Explanation:
Given;
Electron configuration [tex]1s^22s^22p^63s^23p^3[/tex]
Firstly we have to find out the number of shell of given element. For this we have to add number of electron of each shell.
Here counting goes to 3 that means element have three shells. Now we find out number of electrons in each shell.
First shell of an element is K and it has only one sub shell that is 1s. In this element 1s contains only 2 electrons.
For 2nd shell that is L has two sub shell 2s and 2p, for this element 2s contains 2 electrons and 2p contains 6 electrons. That means total number of electrons for L shell is 8.
Now for 3rd shell that is M has two sub shell 3s and 3p, for this element 3s contains 2 electrons and 3p contains 3 electrons. That means total number of electrons for M shell is 5.
Now total number of electrons for the element is the sum of number of electrons in each shell.
Total number of electrons = 2+8+5=15
And we know the number of electrons of any neutral element is equal to the number of protons and number of protons gives us atomic number of the element.
So the atomic number of given element is 15 that is of Phosphorus.
Answer:
C. Phosphorus (P)
How are proteins related to the cell membrane
Explanation:
Membrane proteins perform a variety of functions vital to the survival of organisms: Membrane receptor proteins relay signals between the cell's internal and external environments. Transport proteins move molecules and ions across the membrane. ... Cell adhesion molecules allow cells to identify each other and interact.
what will each newly formed cell form around the chromosomes
A nuclear envelope forms around each set of chromosomes, and a nucleolus forms in each of the newly forming cells. Copied DNA coils into chromosomes. ... Kinetochore fibers move chromosomes to the cell's center.
Answer:
it will form a Telophase
Explanation:
During telophase, the newly separated chromosomes reach the mitotic spindle and a nuclear membrane forms around each set of chromosomes, thus creating two separate nuclei inside the same cell. As Figure 4 illustrates, the cytoplasm then divides to produce two identical cells.
How many reactants and products are present in a double-replacement reaction?
one reactant and two products
one reactant and one product
two reactants and two products
two reactants and one product
Answer:
2 reactants and 2 products. All are compounds
Explanation:
Answer : The correct option is, two reactants and two products.
Explanation :
Double replacement reaction : It is a type of chemical reaction in which a positive cation and a negative anion of two reactants exchange their places to form two new products.
It is represented as,
[tex]XY+AB\rightarrow XB+AY[/tex]
(X and A are the cations, Y and B are the anions)
For example : Barium chloride react with magnesium sulfate to give barium sulfate and magnesium chloride as a product.
The balanced chemical reaction will be:
[tex]BaCl_2+MgSO_4\rightarrow MgCl_2+BaSO_4[/tex]
From this we conclude that, there are two reactants and two products are present in a double-replacement reaction.
Hence, the correct option is, two reactants and two products.
The most common type of blood cancer is
Answer:
The common type of blood cancer include the following
1.Leukaemia
2. Lymphoma.
3. Myeloma.
Explanation:
Leukaemia is cancer of blood-forming tissues, including bone marrow. Many types exist such as acute lymphoblastic leukaemia, acute myeloid leukaemia and chronic lymphocytic leukaemia.
A sunflower is an angiosperm, and a gingko is a gymnosperm. Which best describes the life cycles of sunflowers and gingkoes?
Answer:
Both the sunflower and gingko have seeds.
Both the sunflower and gingko have cones.
The life cycle of sunflowers involves double fertilization; the life cycle of ginkgoes involves single fertilization.
Explanation:
An angiosperm refers to plants which are flower bearing and usually bisexual. The angiosperms are a large group and include grasses, herbs, shrubs and trees. A gymnosperm refers to plants whose seeds are borne on the female cones and seeds are not enclosed in a fruit wall. The gymnosperms comprise of coniferales, cycadales and ginkgoales. Both the sunflower (angiosperm) and ginkgo (gymnosperm) are seed-producing plants. However, the seeds of a sunflower are enclosed by a flower or a fruit wall, while in case of Ginkgoales they are not. Also, sunflowers include double fertilization, while the Ginkgoales involve only a single fertilization.
Answer:d
Explanation:
This is the part of a biogeochemical cycle where nutrients are rapidly moving throughout the systole. The elements tend to only be here for a short period of time.
Answer:
Gaseous cycle
Explanation:
Gaseous cycle inclines to travel more frequently than the sedimentary ones. To adjust more steadily to the changes in the biosphere because of the large atmosphere reservoir. The buildup of carbon dioxide are soon dissipated by wind or taken up by the plants. The extraordinary disturbances i.e. global warming are more often than local disturbances which is wild fires and storm driven events. During the rock phase other salt deposits out as rock and sediment in shallow seas eventually to be weathered and can be recycled.
The question pertains to a stage in biogeochemical cycles where nutrients move rapidly; these cycles help maintain ecosystem health by keeping essential elements available.
The part of a biogeochemical cycle being described relates to a phase where nutrients are in a state of rapid movement and transition, typically referred to as the 'active' or 'main' cycle. In this stage, elements move swiftly through the ecosystem, being taken up by organisms, traveling through food webs, and also cycling through the physical environment, such as soil and water.
This rapid cycling ensures that essential elements remain available to support life. An example is the circulation of nitrogen, which can be rapidly integrated into biological systems through the process of nitrogen fixation and become part of the proteins and nucleic acids in living organisms.
These processes are a crucial part of maintaining ecosystem health because they regulate the availability of mineral nutrients. Through biogeochemical cycles, elements like carbon, nitrogen, and phosphorus are recycled and converted into forms that can be used by plants and other organisms. The efficient functioning of these cycles is essential for the productivity and sustainability of both terrestrial and aquatic ecosystems.