Agre verified his hypothesis in anexperiment where he associated cells which includes the protein with cells that did not have it. When the cells were placed inside a water solution, those that had the protein inside their membranes absorbed water by osmosis and increased up. Those that lacked the protein were unaffected. He also conducted trials with artificial cells called liposomes, which are a type of soap bubble surrounded by water on its extremities and also inside. He figured out that the liposomes became permeable to water if the protein was planted inside their membranes.
What is DNA made of?
DNA is made up of sugars, phospate groups, and nitrogenous bases and its shape is a double helix. The complementary structure the two strands of DNA allow each strand to serve as a template during replication.
Which technique seems to predict abdominal visceral fat as well as the dxa technique?
Erection is controlled by the _____________ nervous system and ejaculation is controlled by the ____________________ nervous system.
Why do you think the eukaryotic DNA requires multiple origins of replication?
If your on plato its Eukaryotic DNA is much larger and replication at multiple origins helps reduce the time required for whole genomes to replicate
The replication origin also known as the origin of replication is a specific sequence in a genome at which the process of replication begins. The prokaryotic chromosomes exhibit one origin of replication, while the eukaryotic chromosomes exhibit multiple origins or replication.
This is mainly because the eukaryotic chromosomes are much bigger, therefore, multiple origins are required to replicate the whole chromosome in a short time duration. The prokaryotic chromosomes are small, thus, one origin of replication suffice.
What is the source of the sugar metabolized by the seed?
How do limiting factors affect the growth of populations?
Limiting factors, which can be either abiotic or biotic, constrain the growth, abundance, or distribution of a population in an ecosystem. Examples include the availability of food, light, water, or soil nutrients. These factors also shape the carrying capacity of an environment for a species, potentially leading to environmental damage and population crash if exceeded.
Explanation:In biological terms, a limiting factor is an environmental condition that limits the growth, abundance, or distribution of a population of organisms in an ecosystem. This concept can be applied to all populations, including animals, plants, bacteria, and mushrooms. Limiting factors can be either abiotic, such as availability of water, light, temperature, or soil nutrients, or biotic, like food availability, predation, or disease outbreak.
For example, the availability of food is often a limiting factor. If there is not enough food to support growth, the population will not increase and may even decrease. Similarly, an insufficiency of light or water can limit plant growth, putting a cap on the population size.
Limiting factors determine the carrying capacity of an environment for a species, which is the maximum number of individuals of that species the environment can sustain indefinitely. When populations exceed their carrying capacity, they can damage their environment, which in turn can lead to a population crash or a sharp decline in the size of the population.
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Which of these statements is true about the introduction to a research paper? A-It defines essential terms and concepts. B-It integrates material from various sources. C-It evaluates the argument of the paper.
Which of the following is most likely to cause the greatest disruption to an ecosystem?
Emptying an aquarium containing non-native species into a local waterway
Cutting down a small cedar tree to make holiday decorations
Cleaning the windshield of a car with an alcohol-based glass cleaner
Mowing the lawn in a city park
Answer: Emptying an aquarium containing non-native species into a local waterway.
Emptying an aquarium containing non-native species into a local waterway will most likely to cause the greatest disruption to an ecosystem. A non-native species can be invasive and may disturb the already living native species in the waterway. The non-native species will compete with the native species for food, mates and habitat and can cause decrease in abundance and death of native species. Hence, it will disturb the ecosystem of the local waterway.
Predict what would happen to muscles if a pesticide that inhibits acetylcholinesterase was present at the motor end plate.
Pesticides that inhibit acetylcholinesterase cause accumulation of acetylcholine, leading to sustained muscle contractions or spasms, and can ultimately result in paralysis and life-threatening conditions.
If a pesticide that inhibits acetylcholinesterase was present at the motor end plate, it would prevent the breakdown of the neurotransmitter acetylcholine (ACh) in the synapse. Acetylcholinesterase is the enzyme responsible for hydrolyzing ACh, which terminates the signal for muscle contraction. When acetylcholinesterase's action is blocked, ACh accumulates in the synapse, leading to prolonged engagement with the ACh receptors on the muscle cell surface. This results in sustained muscle contraction or spasms, and can eventually cause muscle paralysis. An example of a compound that has this effect is Sarin nerve gas, which is a potent acetylcholinesterase inhibitor. In serious cases, the accumulation of ACh can lead to paralysis and potentially be life-threatening due to the inability of the muscles to relax, which could impair vital functions like breathing.
Breakwaters, sea walls, and groins are all examples of ________.
structures built to protect beaches
the answer for grad-point
Final answer:
Breakwaters, sea walls, and groins are 'hard' coastal engineering structures that protect the coast and manage sediment movement, with breakwaters acting as barriers against waves, and groins trapping sand to prevent erosion from longshore drift.
Explanation:
Breakwaters, sea walls, and groins are all examples of structures designed to protect the coast or control sediment movement. Breakwaters are often constructed parallel to the shore and are similar to natural barrier islands in that they protect the shoreline from aggressive wave action. They can cause sediment to accumulate behind them, leading to changes in the coastline. Groins, on the other hand, are built perpendicular to the shore and extend out from the beach, primarily aimed at preventing longshore drift from eroding the beach by trapping sand. Additionally, these structures can be grouped as 'hard' coastal engineering measures because they are inflexible structures that interact with coastal processes to reduce erosion, control sediment transport, and sometimes support navigation and coastal development.
Describe a good action that might have unintended bad effects
The lowest pressure that remains in the arterial system during ventricular relaxation is called
First type of earthquake wave the shake side to side. A)P Wave B)S Wave
Ocean surface temperatures are rising with global warming. Which of the following is another possible consequence? A.Earth's spin changes direction. B.Gyres change direction. C.Low tides disappear. D.Polar caps melt.
D.Polar caps melt.
Explanation;Melted polar ice caps have caused rapid rising sea levels, most of which as situated in Antarctica and Greenland.When warming temperatures gradually melt sea ice over time, it means that fewer bright surfaces are available to reflect sunlight back into the atmosphere. Additionally, solar energy is absorbed at the surface and ocean temperatures rise. The rising sea level acts as an aggressor in global warming and also creates more precipitation. The melting of the polar ice caps causes an increase in the violent cycle of extreme weather that is usually brought by global warming and climate change.Deficits in visual spatial skills and fluent language skills are found in which genetic syndrome?
Deficits in visual-spatial skills and fluent language skills are found in Williams syndrome.
Williams syndrome is a rare genetic disorder that leads to intellectual disability and poor visuospatial abilities. Individuals with Williams syndrome often have relatively strong verbal abilities but struggle significantly with tasks that require visual and spatial skills.
Williams syndrome is caused by the deletion of a small number of genes from chromosome 7. The condition affects many parts of the body, leading to mild to moderate intellectual disability, unique personality traits, distinctive facial features, and cardiovascular issues.
an element has an atomic mass number of 16 and an atomic number of 7. the element has __ protons and __ neutrons
Answer:
7 protons and 9 neutrons
Explanation:
As we know,
Atomic number of an element is the total number of proton in its atom. Thus,
Number of proton [tex]= 7[/tex]
Mass number is equal to the sum of number of proton and number of neutron
Mass number [tex]= \\[/tex] Number of Proton [tex]+ \\[/tex] number of neutron
Putting the available values in above relation, we get -
[tex]16 = 7 +[/tex]Neutron
Neutron [tex]= 16 -7\\[/tex]
[tex]= 9\\[/tex]
Hence there are 7 protons and 9 neutrons
Are horses and donkeys of the same species? yes, according to reproductive isolation no, according to reproductive isolation yes, according to morphology no, according to morphology
Horses and donkeys are not the same species as their hybrids, like mules and hinnies, are sterile, which fits the reproductive isolation criterion of the biological species concept.
Horses and donkeys are not members of the same species according to reproductive isolation. When these two different species mate, their offspring, such as mules and hinnies, are typically sterile and cannot reproduce to have further offspring. This sterility illustrates that horses and donkeys have different sets of chromosomes that do not pair correctly during meiosis, preventing the production of fertile gametes in their hybrid offspring.
While horses and donkeys may share certain morphological similarities, these do not imply that they are of the same species. In fact, morphology alone can be misleading since certain traits can evolve independently across different evolutionary branches for similar ecological reasons.
Therefore, the correct statement is: No, according to reproductive isolation, horses and donkeys are not members of the same species.
Which component of blood causes a positive reaction in the kastle-meyer test and the luminol test?
Answer:
The Kastle- Meyer and Luminol tests are presumptive tests for the identification of blood. The Kestle- Meyer test utilizes the phenophthalein solution and hydrogen perioxide as reagents which reacts with the hemoglobin pigment of the blood. The phenophthalien is colourless dye but in the presence of hemoglobin it gives of pink color. The pink color indicates the presence of blood. The Luminol is the reagent that gives of green fluorescence in the presence of blood also the hydrogen perioxide is used as an oxidizing agent of the reaction. These ingredients also reacts with the hemoglobin component of the blood to give off green fluorescence.
The hemoglobin component of the blood causes a positive reaction in the Kastle-Meyer test and the Luminol test.
How do organisms use different types of carbon compounds
The first organic compound is Carbohydrates. Most organisms use is as a primary fuel or their main energy source. They make up cell structures, and they're also used as stored energy in plants. Second is Lipids. If we have any other energy left over in our bodies, we typically will store that as lipids, which a lot of people think of as fats. It also makes up the cell membrane, and coats the leaves of plants to make them waterproof and also protect them from the elements. Third type are proteins. One use of proteins are chemical messengers or hormones. Proteins are useful for receptors and transport channels in order to help things move in and out of the cell. They also help to control and regulate chemical reactions. Another use is for cell structures, like your hair. the last one is for immunity. The fourth and last is Nucleic Acids. There are two main uses in organisms for nucleic acids. The first one is for protein synthesis. The other use is for our hereditary information or how we pass our traits to our offspring.
An infant of a diabetic mother is admitted to the neonatal intensive care unit. what is the priority nursing intervention for this infant?
The reason that the process called ___________ is so exact is to ensure that each daughter cell has an exact copy of the parental dna. this process occurs in eukaryotes to repair tissues and produce new cells.
Individual prokaryotic cells are about ________ eukaryotic cells collectively all prokatyoyes cells on earth
Individual prokaryotic cells are 0.1 to 5.0 µm in diameter, much smaller than eukaryotic cells, which are 10 to 100 µm. The small size of prokaryotes aids in fast diffusion of substances, unlike in larger eukaryotic cells.
Explanation:Prokaryotic cells are much smaller than eukaryotic cells. They have diameters ranging from 0.1 to 5.0 μm, while eukaryotic cells have diameters ranging from 10 to 100 μm. This means that individual prokaryotic cells are about 10 to 20 times smaller than eukaryotic cells.
Individual prokaryotic cells are significantly smaller than eukaryotic cells. Specifically, prokaryotic cells measure at 0.1 to 5.0 µm in diameter, whereas eukaryotic cells range from 10 to 100 µm. The smaller size of prokaryotes makes them efficient in diffusing ions and organic molecules throughout the cell, as well as in the diffusion of waste products out of the cell. In contrast, eukaryotic cells, due to their larger size, have developed different structural adaptations to facilitate intracellular transport and accommodate their complexity.
Which term applies to the fact that the protozoan that causes malaria is very harmful and often kills its host?
A.
commensalism
B.
parasitism
C.
mutualism
D.
symbolism
The correct term is parasitism. That is option B.
Malaria is a type of disease that is usually caused by the bite of a female anopheles mosquito.
The insect transmits protozoan called plasmodium, which completes its cycle in the living human host with the display of the following symptoms:
Fever, headaches,anemiaSince the protozoan that causes malaria is very harmful and often kills its host, it has a parasitic feeding relationship with the host.
Parasitism is a mode of nutrition where an organism lives on or in another organism known as host, causing harm or death to the host.
Therefore the correct term is parasitism.
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Answer:
Its B Paraitisim
Explanation: Glad to help :)
If the amount of carbon dioxide available to the plant approaches zero, what will happen to the plant's rate of photosynthesis?
Answer:it will drecrease
Explanation:
If an organism has more specialized cells, its cells Blank Space __________.
1.are all the same
2.have their own function
3.do not have any function
4.can survive on their own
The correct option is 2. If an organism has more specialized cells, its cells Blank Space have their own function.
Specialized cells within an organism are differentiated to perform specific functions crucial for the organism's survival and function. Each type of specialized cell, such as nerve cells, muscle cells, or epithelial cells, has unique structures and functions tailored to their role within the organism.
The other options are incorrect because:
Option 1 is incorrect because specialized cells have different structures and functions.Option 3 is incorrect because specialized cells do have specific functions.Option 4 is incorrect because specialized cells typically require support from other cells and systems to survive.When the cell concentrates potassium within, against the natural tendency of matter, it is performing _____.
passive diffusion
facilitated diffusion
active transport
pinocytosis
Sodium bicarbonate is an old standby antacid. it is not recommended for persons suffering from high blood pressure because
Which is used as a presumptive or preliminary field test for blood?
Final answer:
The direct hemagglutination assay is a presumptive or preliminary field test for blood. It uses Coombs' reagent to cross-link antibodies bound to red blood cells and facilitate agglutination, indicating the presence of antibodies against bacteria or red blood cells.
Explanation:
A presumptive or preliminary field test for blood is the direct hemagglutination assay. In this test, Coombs' reagent is used to cross-link antibodies bound to red blood cells and facilitate hemagglutination. The presence of antibodies against bacteria or red blood cells is indicated by agglutination, which can be observed visually or using a spectrophotometer. This test is often used to determine the titer of virus in a solution.
What is the color of a client's wound caused by skin tears? red gray black yellow?
Which of the following correctly compares the structures of plant and animal cells?
A) Both plant and animal cells have a large central vacuole where enzymes, nutrients, and waste are stored.
B) Both plant and animal cells have ribosomes that synthesize proteins for the cell.
C) Both plant and animal cells have a nucleus where cellular respiration takes place.
D) Both plant and animal cells have cell walls that transport substances into and out of the cell.
Both plant and animal cells have ribosomes that synthesize proteins for the cell. Therefore, option B is correct.
What is ribosome?The process of making proteins in a cell takes place at an intercellular structure called a ribosome, which is formed of both RNA and protein. The messenger RNA (mRNA) sequence is read by the ribosome, which then converts the genetic code into a specific string of amino acids that develop into extended chains and fold to create proteins.
The nucleolus is a spherical component of the cell's nucleus whose main job is to assemble and generate ribosomes. Additionally, ribosomal RNA genes are translated into the nucleolus.
plant and animal cells have ribosomes that synthesize proteins for the cell. Therefore, option B is correct.
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