This is where exhaled carbon dioxide and other waste products are effectively converted, either chemically or through photosynthesis, into products such as food, water and oxygen.
What is a closed ecosystem?
Closed systems are characterized as 'self-regenerating' ecosystems that can sustain life without external help. By creating a continuous cycle, all resources can be fully reused.
It is primarily used to describe miniature forms of human-made ecosystems and is of scientific interest. These ecosystems tend to show great potential, especially in establishing life support systems during spaceflights and on space stations, and even in creating space habitats.
In closed ecosystems, it is important to naturally include at least one autotroph, since almost all designed closed ecosystems are based on autotrophs such as green algae. It is also important that all forms of waste produced by one organism are utilized by other organisms within a closed ecosystem.
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A fast food restaurant wants the average number of total carbohydrates in their items to be less than 50g. How can they use formulas to know if they have met this goal?
To count there goal they can multiply the carbohydrate grams by 4. Divide this result by the total number of calories to get the percent of carbohydrates in the food.
A calorie is a unit of ways a lot strength is in a given quantity of meals, additionally known as a kcal. Regardless of whether or not the carbohydrate in meals is sugar or starch, all carbohydrates offer the frame with four energy/gram, explains Dr.
The Dietary Guidelines for Americans endorse that carbohydrates make up 45% to 65% of general every day energy. So in case you get 2,000 energy a day, among 900 and 1,three hundred energy need to be from carbohydrates. That interprets to among 225 and 325 grams of carbs a day.
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Which of the following is a simplified way of describing mitosis?
1. Cells copy once and divide twice making 2 cells
2. Cells copy twice and divide once making 2 cells
3. Cells copy once and divide twice making 4 cells
4. Cells copy once and divide once making 2 cells
Mitosis is the equational division, in which one parent cell divides to form two exact copies of daughter cells which are identical to the parent cell. Thus, the correct option is 4.
What is Mitosis?Mitosis is a type of cell division which occurs in all types of cells. This is also known as equational division because the number of chromosomes remains constant after the division. In this division, one parent cell undergoes division to form two daughter cells which are clones of the parent cell.
In this division, a single DNA splits into two daughter cell's DNA. The mitotic division consist of karyokinesis and cytokinesis. Karyokinesis is the division of nucleus which includes different phases such as Prophase, Metaphase, Anaphase, and Telophase followed by the division of cytoplasm (cytokinesis).
Therefore, the correct option is 4.
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an unknown microbe is grown on triple sugar iron. you observe the surface of the slant has changed to a dark red color. the butt of the slant is yellow. this result would be recorded as
Lactose is not fermented, but a little quantity of glucose is; this causes the oxygen-deficient butt to appear yellow (keep in mind that more media means more glucose), whereas the acid on the slant is oxidized by the organism into carbon dioxide and water, causing the slant to appear red (alkaline or neutral pH).
Triple sugar iron test: what is it?When you see the name of this test, Triple Sugar Iron Agar, you must keep in mind that it is a test that contains iron as well as three sugars (Lactose, Sucrose, and Glucose), and it also contains agar as a solidifying agent (TSI is a semi-solid media having slant and butt).
Lactose, Sucrose, and Glucose are present in Triple Sugar Iron Agar (TSI) in the proportions of 10:10:1 (i.e., 10 parts Lactose (1%), 10 parts Sucrose (1%) and 1 parts Glucose (0.1%)).
Triple Sugar Iron Agar Test Interpretation1) Lactose (or sucrose) fermentation results in the production of a significant amount of acid, which causes the phenol red indicator to turn yellow both in the butt and in the slant. Gases produced by some organisms cause bubbles and fissures to appear on the medium.
2) The oxygen-deficient butt will be yellow if lactose is not fermented but a tiny amount of glucose is (remember that butt has more glucose than slant, thus more media means more glucose), but on the slant the acid The organism will oxidize the (less acid as medium in slant is very little) to carbon dioxide and water, turning the slant red (alkaline or neutral pH).
3) The butt and the slant will both be crimson if neither lactose/sucrose nor glucose is fermented. The formation of ammonia from the oxidative deamination of amino acids might cause the slant to turn a deeper red-purple (more alkaline) (remember peoptone is a major constituent of TSI Agar).
4) The presence of ferrous sulfide, which is black, indicates the presence of H2S.
- Red/red: Nonfermentable glucose, lactose, and sucrose
- Red/yellow: Only fermentation of glucose
- Yellow/yellow: fermentor for glucose, lactose, and/or sucrose
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Geologic Timeline Mode
The first animal and plant life on Earth, the emergence of mountains on Earth, and the extinction of the dinosaurs are just a few instances of events that are listed on the geologic timescale.
What is the Geologic Timeline Mode?A representation of time based on Earth's rock record is called the geologic timescale, or GTS.
It is a method of chronological dating that makes use of geochronology and chronostratigraphy, which relate strata to time (scientific branch of geology that aims to determine the age of rocks).
Therefore, Geologic Timeline Mode indicate evolutionary history based on life forms.
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gray seed color in peas is dominant to white. assume that mendel conducted a cross and the following progeny were produced: 202 gray and 198 white. what are the most likely genotypes of the parents?
The genotypes of the parents if you assume that mendel conducted a cross and the following progeny were produced: 202 gray and 198 white is GG and Gg.
Gregor Mendel uncovered the basic principles of heredity through his study on pea plants. He concluded that genes are inherited from each parent as separate, paired units. Mendel observed how parental genes separated and if they showed up as dominant or recessive qualities in the children.
Let "G" represents gray seed colored peas while "g" represents white seed colored peas. Also, take note that "G" is dominant over "g". The ratio of gray vs white offspring is 202:198 and if we simplify it, it becomes 2:2. Thus, there are 2 times gray peas for every 2 white ones. Now as per Mendel's rule, the genotype of two gray peas would be GG and Gg So the genotype of parent would be GG x Gg.
The cross can be seen in the attached image.
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We tested for halides, phosphates, sulfates, and nitrates. Are these ions water pollutants? what potential health issues could they cause if they are ingested?.
Yes, halides, phosphates, sulfates and nitrates pollute the water bodies and pose damage on ingestion.
Ions are generally present in water, making it conductive in nature. The excess concentration of these ions pose harm to environment and human health. These ions, when present in excess, decrease the available oxygen in the water bodies. It further causes death of microorganisms and plants.
Ingestion of ions in excess concentrations imbalances the ion concentration in the body. These high concentrations can also have carcinogenic consequences on human health leading to lethality. Other effects of ingestion of these ions include diarrhoea, neural tube defects, dehydration, colon cancer.
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During an annual check-up, the doctor typically feels the lymph nodes for swelling. What would swelling in the lymph nodes most likely indicate?
A.
the body is experiencing an infection
B.
white blood cells are lacking nutrients
C.
white blood cells are growing uncontrollably
D.
the body is not receiving enough oxygen
Answer: The body is experiencing an infection
A.
Explanation:
Where can you find diamonds
Explain Phenomena in Terms of Concepts How does a magnetic field
change as you move away from a magnet? At what point does it end?
The strength of the magnetic field H and the strength of the magnetic
induction B can both be used to describe magnetic phenomena. The relationship provides the magnetization, or the magnetic moment per unit volume, or Mv. (9.80) in which 0 represents the permeability of a vacuum
How would you describe the lines of the magnetic field?Closed loops with no beginning or end are created by continuous magnetic field lines. From the north to the south pole, they travel.
Magnetic field lines are fictitious lines that are used to depict the magnetic field's direction at a particular spot.
South pole to north pole and north pole to south pole magnetic field lines are present both inside and outside the magnet, respectively.
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In the 80s, 90s and early 2000s, the Chesapeake Bay was so polluted that fish and oyster populations were almost gone. In 2008, environmentalists were divided on how to fix the bay. Some demanded widespread seeding of sterile imported oysters to deal with worsening water quality that was wiping out aquatic life in the bay. Adding the imported oysters could slowly filter and clean the bay water. Others warned that this could be a disaster because a few of the imported oysters would be fertile and might proliferate, forcing out the last of the Eastern oysters or interbreeding with the native species. (Source: © 1999-2020 National Center for Case Study Teaching in Science, University at Buffalo.)
If local officials decide to place imported oysters in bay, how could this change the capacity of the bay to support human activity?
The water quality in the Chesapeake bay will deteriorate with an increase in human populations.
The Chesapeake Bay faces serious problems due to human activities, including polluted storm water runoff, over-fertilization and pollutants from animal wastes, deforestation, wetland destruction from agricultural, city, and suburban development, and sea level rise due to worldwide climate exchange.
The water quality within the bay will deteriorate with an increase in human populations. The bays like Chesapeake Bay are brackish a mixture of sparkling and salt water. An increase in human populace will growth the salt stages in the bay because the among of clean water is reduced.
Sea-level rise is exacerbated by land subsidence. This combination of methods in the Chesapeake Bay has resulted in about one foot of net sea-stage rise in the Bay over the last one hundred years a charge almost two times that of the worldwide historical average.
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A, Glucose turns into pyruvic acid. Energy and O 2 enter the cell. B, Oxygen and energy in the cell turn into H 2 O. C, Mitochondria in the cell and C O 2 exits the cell.
Label the main steps in the cellular respiration model.
A:
B:
C:
The steps in cellular respiration are ordered as follows:
A. Glucose turns into pyruvic acid.B. Energy and oxygen, O₂ enter the cell.C. In the Mitochondria, oxygen, O₂, and energy in the cell turn into water, and H₂O and CO₂ exit the cell.What is cellular respiration?Cellular respiration is the process by which large organic food molecules are broken down to produce energy in the form of ATP for the body.
Cellular respiration occurs in two ways:
Aerobic respiration - this occurs in the presence of oxygen and results in a large amount of ATP produced.Anaerobic respiration - occurs in the absence of oxygen and produces fewer ATP molecules.Learn more about cellular respiration at: https://brainly.com/question/425991
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Answer:a c a
Explanation:
Proteins which are embedded in the membrane are called membrane proteins, while proteins which are attached to the surface of the membrane are called proteins.
Proteins which are embedded in the membrane are called membrane proteins, while proteins which are attached to the surface of the membrane are called peripheral proteins.
Any protein molecule that is joined to or connected to an organelle's or cell's membrane is said to be a membrane protein. On the basis of how the protein is connected to the membrane, membrane proteins can be divided into two types. Integral membrane proteins are indelibly incorporated into the plasma membrane.
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In the noncyclic electron pathway of the light reactions, where are photosystems i and ii located?.
In photosystem II, electrons generated from water molecule breaking take their place. Algae and plants that use photosynthesis experience this.
What is the noncyclic photosynthesis pathway?Electrons travel from H2O through PSII to PSI and subsequently to NADP+ in the noncyclic pathway. When sunlight strikes the PS II pigment complex, high-energy electrons (e-) leave the chlorophyll molecule, which serves as the reaction's core.
What is the electrons' route during a light reaction?Robert Hill and Fay Bendall described the general characteristics of a generally accepted photoelectron transfer mechanism in 1960, in which two light reactions (light reactions I and II) take place during the transfer of electrons from water to carbon dioxide.
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"Why is each part of the cell essential to survival?" please write and answer in CER form
Each part of the cell is essential to survival because they perform the necessary functions which help keep us alive.
What is a Cell?This is referred to as the simplest unit of life and becomes aggregated to for tissues which have similar structures and functions.
Let's take the eyes for example, if the cells are damaged then it will lead to the reduction in its function which in this scenario is a bad sight or having troubles seeing correctly. This in turn leads to not being able to work or move away from hazardous substances which is why each part of the cell is essential to survival.
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Given equal probabilities of the birth of a xy or xx, what is the probability that a group of four siblings includes all xy? all xx? all xy or all xx?.
The Probability that a group of four siblings includes all xy is 1/16; all xx is 1/16; all xy or all xx is 1/8.
The area of mathematics known as probability deals with numerical descriptions of how likely it is for an event to happen or for a claim to be true. A number between 0 and 1 is the probability of an event, where, broadly speaking, 0 denotes the event's impossibility and 1 denotes its certainty. The likelihood of an event occurring increases as its probability increases. Tossing a fair (unbiased) coin is a straightforward illustration. The probability of either "heads" or "tails" is half since there are no other conceivable outcomes and the coin is fair, meaning that both outcomes ("heads" and "tails") are equally likely.
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active and passive transport are important processes that help the cell(1 point) responses metabolize materials. metabolize materials. change size and shape. change size and shape. regulate the uptake and removal of materials. regulate the uptake and removal of materials. maintain the cellular membrane. maintain the cellular membrane.
Active and passive transport are important processes that help the cell regulate the uptake and removal of materials.
For a cell to carry out its function, the necessary materials need to move in and out of a cell. The cell also needs to take in energy and move out waste molecules.
Active and passive transport are the methods through which materials move in or out of a cell.
Such a process of movement that does not require energy is referred to as passive transport.
Such a process of movement that requires energy for the movement of molecules across the cell is referred to as active transport.
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Which of the following is NOT a reason for cells to undergo mitosis?
1. Produce sex cells
2. Repair damage
3. Produce body cells
4. Growth of the body
Answer: 3. Produce body cells
Explanation:
Answer: 1. Produce sex cells
Explanation:
Options 2, 3, and 4 all undergo mitosis. While option 1 undergoes meiosis.
Please answer as soon as possible!!
Thanks...
Answer:
for me I'll agree to both statement before and after, because both are true. the first statement is also true as this is one of the process of weathering that can occur, not necessarily relating to the formation of metamorphic rocks
How many carbon dioxide molecules are needed to produce a glucose during photosynthesis?.
Six carbon dioxide molecules are needed to produce glucose during photosynthesis.
What is photosynthesis?
A chemical reaction that takes place in photosynthesizing organisms such as plants, algae, and certain kinds of bacteria when they are exposed to sunlight. During the process of photosynthesis, water and carbon dioxide react to produce carbohydrates (also known as sugars), while also producing oxygen. Both animal and plant life require photosynthesis in order to survive.
It takes six molecules of CO2 to synthesize one molecule of glucose, and during this process, each molecule goes through its own individual C3 cycle. After six rounds of the Calvin cycle, one molecule of glucose is produced from six different molecules of carbon dioxide.
Hence, the process of photosynthesis requires sis CO2 molecules to produce glucose.
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what is the sbstrate of an enzyme
A molecule with which an enzyme interacts is known as a substrate.
A substrate is put into the active site of the enzyme, which is where weak bonds between two molecules might form. The substrate reacts under the pressure of the enzyme, forming an enzyme-substrate complex that is the product of the intended reaction.
In biochemistry, the molecule on which an enzyme operates is known as the substrate. Enzymes catalyze chemical reactions involving the substrate(s). The substrate is changed by the active site into one or more released products. The active site is then ready to accept a fresh substrate molecule.
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A person with prediabetes has a fasting blood glucose level of _____ milligrams per deciliter.
Answer:
100–125
Explanation:
A person with prediabetes has a fasting blood glucose level of _100–125____ milligrams per deciliter.
Blood type is an example of ____________, in which two alleles may be expressed, but neither one may be dominant over the other.
Blood type is an example of codominance, in which two alleles may be expressed, but neither one may be dominant over the other.
In the field of genetics, codominance can be described as a phenomenon in which the different types of alleles for a particular gene are both expressed in an organism. There is no recessive allele in such a case as both alleles express themselves.
An example of codominance is the ABO blood group system. All the alleles A, B and O express themselves separately and none of them is recessive to the other. Both the alleles for these genes express themselves in an individual and determine the blood type of an individual.
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Why can chromosomes only be seen when cell is dividing
Chromosomes are not visible in the cell's nucleus, not even under a microscope when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.
Explanation:During most of the cell cycle, interphase, the chromosomes are somewhat less condensed and are not visible as individual objects under the light microscope. However during cell division, mitosis, the chromosomes become highly condensed and are then visible as dark distinct bodies within the nuclei of cells.
A plant can store starch in many areas, from the leaves down to the roots .What does this tell us about the transport of sugar solution in phloem tubes?
A high concentration of sugar at the source creates a low solute potential (Ψs), which draws water into the phloem from the adjacent xylem. This creates a high pressure potential (Ψp), or high turgor pressure, in the phloem. The high turgor pressure drives movement of phloem sap by “bulk flow” from source to sink, where the sugars are rapidly removed from the phloem at the sink. Removal of the sugar increases the Ψs, which causes water to leave the phloem and return to the xylem, decreasing Ψp.
The sequence is ACUCUUCUGGUCCCAACA.
From that sequence, remove only the first A (adenine). What amino acid sequence would be translated as a result of this change?
Answer:
frame shift
Explanation:
describe how a cell might make one type of protein and not make another type
Answer: Structures found in the cytoplasm, called ribosomes, perform the process of translation. Reading the mRNA's nucleotides three at a time, these structures assemble strands of amino acids, the molecules that make up proteins. Each nucleic acid triplet corresponds to a particular amino acid.
In a cell the ribosome can make protein by the process of translation process where it read the mRNA nucleotide sequence at a time which assemble the strands of amino acids, the molecules that make up proteins. as each ribosome involve in synthesis of specific amino acids at a time, thus it can not make another protein
what is the function of ribosome ?A ribosome is a complex molecular machine present inside the living cells that produce proteins by a process called protein synthesis or translation.
The most important ribosome function are It gather and assemble all amino acids to form proteins which are essential to carry out cellular functions, The DNA synthesize mRNA by the process of DNA transcription.
The mRNA synthesis occur in the nucleus and transported to the cytoplasm for protein synthesis, the subunit of ribosome present in the cytoplasm are bound around mRNA polymers and tRNA synthesizes proteins.
The proteins synthesized by attached ribosomes can be transported outside the cell.
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Help please! in a cell's membrane, the phospholipid heads point outward toward the environment and toward the interior of the cell. why is this arrangement of phospholipids important in regulating interactions with its surroundings?
the polar heads can interact with water and other charged particles.
the hydrophilic heads help keep the cell moist by attracting water.
the polar heads help the cell stick to other cells of similar type.
the positively charged heads repel all negatively charged particles.
Answer:
The polar heads can interact with water and other charged particles.
Explanation:
The explanation is in the answer. There is water inside and outside of the cell. Water is polar so the phospholipid heads cause electrostatic interactions.
The cell membrane or plasma membrane is made up of phospholipids and proteins in which the polar heads can interact with the water and other charged particles present towards the outward environment. Thus, the correct option is A.
What is cell membrane?The Cell membrane serve as the barriers and gatekeepers for the entry of substances into the cell. They are semi-permeable in nature which allows some molecules to diffuse across the lipid bilayer but restrict others. Small hydrophobic molecules and gases like oxygen and carbon dioxide can cross the cell membranes rapidly without any protein.
The cell membrane is made up of phospholipids and membrane proteins. The heads of these phospholipids point outward towards the environment and towards interior of the cell. This is because the polar heads are hydrophilic in nature which can interact with the water and other charged particles whereas the hydrophobic tails of these lipids cannot interact with polar charged particles.
Therefore, the correct option is A.
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PLEASEEEE HELP :)))
hypothesize why there are many different cell types in the human body. Why might it be important that our cells are specialized for a specific function?
Answer:
read these carefully and you'll develop your answer
Explanation:
1. Explain what is meant by a specialised cell.
Specialised cells are cells designed to carry out a particular role in the body.
2. Stem cells can specialise.
2. How do stem cells become specialised?
Stem cells can divide and produce cells that have the potential to become other more specialized cell types or tissues.
3. What might happen if a stem cell does not differentiate properly?
“Many cell types once they have become completely specialised (terminally differentiated) have a limited capacity to produce new cells of the same type.”, if they don't differentiate properly, they will not be able to specialize in any field, will it have a tissue to reside in nor function.
speaker notes
Made up of mostly solid Iron
and Nickel
Composed of mostly granite
and basalt
Made up of mostly liquid iron
and nickel
Made up of mostly magma
The densest layer of the Earth
Contains convection currents
that move the tectonic plates
Thinnest layer of the Earth
Inner
Core
Mantle
Earth's
Crust
Outer
Core
Is your work saved?
Go Back to Lab Room
OUTPUT
STATION
Match the property cards with
Organize It! the correct layer of the Earth.
Place the layers of the Earth
cards in order from outside
(top) to inside
(bottom.)
outermost
layer
innermost
layer
|||
KESLER
SCIENCE
The Earth's thickest layer contains tectonic plate-moving convection currents. Earth's inner core mantle is its at thinnest layer. MAIN levels three A metallic core consisting of iron and nickel. b. Mantle: a rock that is only partially solid. Crust is a thin layer of stiff, brittle rock.
What is the solid nickel and iron spherical at the center of the Earth?
Inner and outer cores are the two layers that make up the core. The earth's inside core is a solid spherical made of iron and nickel that is incredibly heated. The sole liquid layer of the earth is its outer core, which is a sea of mostly iron and nickel.
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which plant part is responsible for transporting water, minerals, and sugars to different parts of the plant? name the two types of tissue that make up this overall tissue, and explain the role of each.
Answer:
The vascular tissue is responsible for transporting water, minerals, and sugars within the plant
Explanation:
The two types of tissues that makes up vascular tissue are:
1. Xylem: The xylem is responsible transporting water and minerals around the plant. The Xylem also is used to provide structure to the plants.
2. Phloem: The phloem transporting the nutrients and organic material in the plant.