Ans. (B). They are complex organs made of many types of cells and tissues.
Organ culture involves development of tissues or organs, in vitro (outside the body), to restore, maintain, or improve damaged organs or tissues. Many organs and tissues are successfully grown by engineered tissues, such as skin and cartilage.
However, heart, lungs, and other complex organs have not been very successfully grown as these organs are made up of different types of tissues and cells. For examples, heart is made up of cardiac muscle tissue, skeletal tissues, and smooth muscle tissue.
It is quite tough to assemble different types of cells and tissues to make organs fully functional or reproducible.
Thus, the correct answer is option (B).
For the eighth observation (i=8), identify the animal phylum, xi, and yi.
The common ancestor of the protostomes had a coelom. what does this suggest?
Which subatomic particle contains the energy stored in chemical bonds? isotope , neutron , electron , proton
The scientific name for a white oak is Quercus alba; the scientific name for a red oak is Quercus rubra. What does this tell you about the organism? A. White oaks are grouped in the genus Quercus. B. Red oaks are grouped in the genus alba. C. Red oaks are grouped in the species Quercus. D. White oaks are grouped in the same species category as red oaks.
Answer:
rong
Explanation:
What do biologists call groups of cells that are specialized to secrete substances outside the cells?
How did photosynthesis lead to the development of animals living on land?
A student runs up a flight of stairs. other than the skeletal system, which body system would be most immediate in its support of the muscular system in this activity?
i would think the cardiac muscle because your blood would be pumping.
Your body can manufacture certain amino acids as they are needed, others must come from your diet. the amino acids that come from your diet are known as:
Are carbohydrates used for long term energy storage?
2.) The seafloor holds promise as a source of many natural resources, including valuable metals. As demand for natural marine resources increases, mining these resources from the seafloor also increases. One concern of seafloor mining is the disruption of the seafloor habitat. Which of the following describes the most likely impact of seafloor mining on the surrounding marine environment?
A.) Alteration in seafloor sediments rich in carbon would cause loss of species and an unbalanced population in marine food webs.
B.) Increased levels of metals in the ocean would result in decrease of marine bivalves due to weakened shells.
C.) Methane gas would pollute the marine environment and cause an overabundance of bacteria that feed on it.
D.) Nonrenewable resources in the marine environment would become depleted and affect the balance of the ecosystem.
Answer: A.) Alteration in seafloor sediments rich in carbon would cause loss of species and an unbalanced population in marine food webs.
Explanation:
The seafloor mining will have a drastic impact over the sea ecosystem. The mining process will expose the partially decomposed organic matter to the sea water. This will result in the increase in abundance of the organic carbon in the sea water. This will readily absorbed by the aquatic plants but the increase in abundance will likely to kill sea animals because carbon is the waste material discharged by the organisms and oxygen is the basic requirement for all the cells of the body. This will negatively influence the populations of the marine food webs.
The client is admitted with paroxysmal supraventricular tachycardia at a rate of 140 beats per minute. the client's blood pressure is 110/55 mm hg, and the client is asymptomatic except for a "fluttering feeling" in the chest. which treatments should the nurse be prepared to administer
The diagonal arrow of a cladogram shows us that we are moving _________ in time.
The diagonal arrow of a cladogram shows us that we are moving forward in time.
Which of these allow nutrients to diffuse form the central canal to all the osteocytes within an osteon?
Why a flash of green light might cause the Flubber to become so energetic
Answer:
A flubber is a rubber like polymer that absorbs and amplifies energy. A flubber absorbs energy from a light source and electrons present in it are excited in order to emit light of higher wavelength. The green light absorbed by the flubber to emit longer wavelength of light emitting more energy.
Flubber is a slime-like polymer material that is made up of cross-linked boron with polyvinyl alcohol. It is used for educational experiments and leisure activities.
Flubber absorbs and amplifies energy. It absorbs energy from the source and reflects it.
The electrons present in the polymer gets excited and emit a wavelength of a high order.
The green lights excite the flubber material and make them energetic which leads to the emission of high wavelength.
Therefore, the green light makes the flubber more energetic.
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A clerk can sort 375 sheets of per hour. If there are 225 sheets in an inch, how long will it take her to file 125 inches of loose leaf?
Answer: 75hours
Explanation:
If there are 225 sheets in one inch that means that in 125 there will be 28,125 sheets because you will have to multiply. And if you can sort 375 pero hour that will mean than in 75 hours you will sork all sheets because 28,125 divided by 375 sheets pero hour will give 75 hours.
125 inch * 225 sheet/ inch= 28,225 sheets
28,225 sheets divided by 375 sheets/hour=75 hours
It will take them 75 hours to file all the sheets in the bundle.
What is speed?
The rate of change of position of an object is called speed. Speed is a scalar quantity, which means the measurement of direction is not important in the case of speed.
That is why it is different from velocity which is a vector quantity. In velocity, the rate of change of motion is measured in a particular direction.
Because speed measures the rate of a change in motion, it is not useful to be used in this case.
In this case, the rate of filing is 375 sheets/hour.
There are 225 sheets in an inch and a total of 125 inches of sheets.
So the total number of sheets is equal to
225 × 125 = 28125 sheets.
Rate of filing = 375 sheets/hour
So, 28125/375 = 75.
Therefore the time required to file all of the sheets is equal to 75 hours.
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What name is given to organisms that convert the carbon in organic compounds into carbon in carbon dioxide?
Non-photosynthetic organisms convert the carbon in organic compounds into carbon in carbon dioxide.
What are organic compounds?The process by which organisms that engage in photosynthetic growth, like plants and algae, convert inorganic carbon compounds (typically carbon dioxide) into organic carbon compounds examples of processes that cause carbon to transfer from one reservoir to another include photosynthesis, respiration, and combustion.
The process of cellular respiration involves the oxidation of biological fuels in the presence of an inorganic electron acceptor, such as oxygen, to generate significant amounts of energy that are used to power the major production of ATP.
Therefore, cellular respiration is a series of metabolic processes that take place inside of cells to transform biochemical energy from food into a substance known as adenosine triphosphate.
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PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!! 20 pts!!!!!!!!!!!!!!!!!!
When a mass of earth falls down a hillside and destroys what's in its path it is called...what?
Mice eat corn. Hawks eat mice. Which term describes the corn in this food chain?
a. secondary consumer
b. primary consumer
c. producer
d. decomposer
The correct answer is producer.
The term producer means the autotrophic plants that makes food for themselves. The primary consumer such as mice feeds on the producer (corn) for their energy requirement. Producers lie at the first level of the food chain. Producers are the blue-green plants that makes food by the process of photosynthesis by using sunlight.
Which organism is most closely related to canis familiaris?
Which factor would not increase the production of glucose by photosynthesis in plants?
Lack of water would not increase glucose production by photosynthesis in plants because water is crucial for the light reactions to produce NADPH and ATP, which are needed in the Calvin cycle to synthesize glucose. Insufficient water impacts the entire photosynthetic process, leading to decreased glucose production.
Explanation:A factor that would not increase the production of glucose by photosynthesis in plants is a lack of water. Water is essential for the light reactions of photosynthesis, where water molecules are split to form oxygen, electrons, and protons. These electrons and protons are then used to generate NADPH, which, along with ATP produced in the light reactions, is used in the Calvin cycle to synthesize glucose. Without sufficient water, these processes can't occur optimally, and the production of glucose by photosynthesis would decrease.
Regarding the statement about how an increase in temperature causing faster diffusion of CO2, and consequently, a potential increase in the rate at which plant leaves lose CO2; if all other conditions are favorable for photosynthesis, the increased loss of CO2 may lead to reduced availability of CO2 for the Calvin cycle. This can result in a decrease in photosynthesis (as per option d.), since there would be less CO2 to be fixed into glucose.
The products of the Calvin cycle are glucose and other sugar molecules as well as the regeneration of the molecule RuBP which is necessary for the cycle to continue.
If a plant lacks a photosystem II complex due to a mutation, it would not be able to initiate the light-dependent reactions of photosynthesis, leading to a failure to produce the essential compounds like ATP and NADPH required for the Calvin cycle, thus disrupting the synthesis of glucose.
Plants that lack sunlight or sufficient water would not be able to perform photosynthesis efficiently, which would impact not only the plant's survival but also the organisms that rely on those plants for food, leading to broader ecological consequences.
Exposure to only red light can still support photosynthesis, although the rate may vary depending on the specific species of plant and its adaptations to light conditions (as per options b. and c.).
Factors not increasing photosynthesis include a lack of water or insufficient CO₂, both crucial for the Calvin cycle. A mutation removing photosystem II would inhibit photosynthesis, and only red light exposure can also affect the rate of photosynthesis. Plants without sunlight or water would produce less glucose, impacting dependent organisms.
Explanation:Factors that do not increase the production of glucose by photosynthesis in plants include a lack of water or inadequate carbon dioxide (CO₂). A lack of water would prevent hydrogen ions (H+) and NADP+ from forming NADPH, which is essential for the Calvin cycle of photosynthesis. Not enough CO₂ would limit the number of carbon molecules available to be fixed into glucose during the Calvin cycle. Additionally, an increase in temperature might lead to a faster loss of CO₂ from plant leaves, affecting the Calvin cycle by slowing it down due to insufficient carbon to fix in the system. This could potentially lead to lower glucose production if light and water are adequate.
The products of the Calvin cycle, which depend on carbon fixation, are carbohydrates and regenerated RuBP (ribulose bisphosphate), which is critical for the cycle to continue. If a plant had a mutation that eliminated its photosystem II complex, it would not be able to split water molecules to generate oxygen, hydrogen ions, and electrons essential for the formation of NADPH and ATP, thus hampering the photosynthetic process and preventing glucose production.
With only red light exposure, the rate of photosynthesis in a plant could potentially decrease or follow a complex pattern where it decreases and then increases, depending on the specific wavelength of the red light and the plant's individual response to it. For plants lacking sunlight as an energy source or sufficient water, photosynthesis would be inhibited, reducing glucose production and potentially affecting those organisms that rely on plants for survival.
Why do you think macarthur chose inchon as his landing place?
Mr. jones has a large kidney stone that is obstructing the flow of urine in his left kidney, resulting in kidney enlargement and backing up of urine into his ureter. this is known as:
Sugar is a compound of which Of the following?
A) carbohydrates
B) lipids
C) nucleic acids?
Which property is shared by the processes of replication and transcription?
a. they both take place in the cytoplasm of the cell.
b. one strand of nucleic acid serves as a template for synthesis of another.
c. they both make copies of dna.
d. they require ribsomes.
e. they both use the nucleic acid uracil?
Answer:
b. one strand of nucleic acid serves as a template for synthesis of another.
Explanation:
Replication is the process of synthesis of new DNA molecules using the existing DNA strands as a template.
Transcription is the process of synthesis of RNA using the template DNA strand to copy its nucleotide sequence.
Both replication and transcription use existing DNA strands as a template to make new strands of nucleic acids. Both processes occur inside the nucleus.
The role of the respiratory system is to bring what substance into the body? question and answer
Which is not correctly paired concerning parasympathetic outflow? which is not correctly paired concerning parasympathetic outflow? the glossopharyngeal nerve innervates salivary glands the oculomotor nerve innervates smooth muscle in the eye that allows for pupil constriction the nerves coming from the thoracic region innervate stomach and liver the nerves coming from the sacral section innervate lungs and heart the vagus nerve stimulates many glands in the head like lacrimal and salivary glands?
In some species, young individuals float freely as plankton while mature members are fixed on the seafloor. this is an effective strategy because
The breathing center in the brain is most sensitive to the ________________. concentration of carbon dioxide in the lungs amount of oxygen in the cells concentration of oxygen concentration of carbon dioxide in the blood
Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory?
The mitochondria and chloroplasts are much different in structure than bacteria. Hence the correct option is a.
One piece of molecular evidence supporting the endosymbiotic theory is the similarity between the DNA of mitochondria and chloroplasts and that of bacteria. This similarity suggests that mitochondria and chloroplasts may have originated from free-living bacteria that were engulfed by ancestral eukaryotic cells and formed a symbiotic relationship.
Additionally, the presence of ribosomes in mitochondria and chloroplasts that resemble those found in bacteria further supports this theory. Moreover, the mechanism of division by fission, which is similar to bacterial reproduction, observed in some organelles like mitochondria and chloroplasts provides further evidence for their bacterial origins.
However, the structural differences between mitochondria, chloroplasts, and bacteria do not directly support the endosymbiotic theory but rather suggest evolutionary adaptations that have occurred over time. Therefore, option A is not a piece of molecular evidence supporting the endosymbiotic theory. Hence the correct option is a.
Complete question:
Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory?
A. The mitochondria and chloroplasts are much different in structure than bacteria.
B. Ribosomes of some organelles are like that of those found in bacteria.
C. Some organelles divide by fission just like bacteria.
D. Mitochondrial and chloroplast DNA is similar to bacterial DNA.
All living things are made of organic compounds which contain the element A) carbon. B) hydrogen. C) oxygen. D) phosphorus.