A biological vector actively participates in the life cycle of the pathogen.
The correct option is D.
What is pathogen ?An organism that infects its host with disease is referred to as a pathogen, and the severity of the clinical disease is referred to it as virulence. Pathogens include viruses, bacteria, multicellular and unicellular eukaryotes, as well as other taxonomically diverse organisms.
What is a pathogen example?Pathogens are microorganisms that infect the body and can harm health. They include viruses, germs, fungus, and worms. Anthrax, HIV, Epstein-Barr, and the Zika virus are just a few examples of infections that can lead to life-threatening illnesses.
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The complete question is -
A(n) _____ vector actively participates in the life cycle of the pathogen.
A-mechanical
B-line
C-euclidean
D-biological
each chromosome of a homologous pair is split during meiosis.
a. True
b. False
True, during meiosis, each chromosome of a homologous pair is split.
During meiosis, homologous chromosome pairs are randomly separated to form haploid cells, and this separation, or assortment, of homologous chromosomes is random. This means that the maternal chromosomes will not be combined in one cell, while the paternal chromosomes will be combined in another.
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How do enzymes affect a chemical reaction, making it easier to occur?
a. They make the reaction exothermic
b. They reduce the activation energy
c. They raise the activation energy
d. They make the reaction endothermic
Enzymes affect a chemical reaction, making it easier to occur by reducing the activation energy; option B
What are enzymes?Enzymes are biological molecules that alter the rate of chemical reactions occurring in the body.
Enzymes usually speed up the rate of reactions by making the reactions less energy-demanding, that is by lowering the activation energy of the biochemical reaction.
Enzymes are usually proteins, hence are affected by the conditions of temperature and pH.
Enzymes are also very specific in the substrate they act upon.
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what is the relationship between a robin and its habitat?
PLEASE ANSWER CORRECTLY !
which substance is a main product of cellular respiration that is made by the krebs cycle
• ethanol
• carbon dioxide
• water
• pyruvate ions
Answer:
carbon dioxide is a main product of cellular respiration that is made by the Krebs cycle
The main product of cellular respiration that is made by the Krebs cycle is carbon dioxide.
The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle, is a central metabolic pathway in cellular respiration. It occurs in the mitochondria of eukaryotic cells and plays a critical role in extracting energy from glucose and other fuel molecules.
During the Krebs cycle, a series of chemical reactions occur, resulting in the conversion of acetyl-CoA, a two-carbon molecule, into several intermediate compounds. One of the key steps in the Krebs cycle is the decarboxylation reactions, where carbon dioxide (CO₂) is released as a byproduct.
In each turn of the Krebs cycle, carbon dioxide is produced from the breakdown of carbon atoms within the acetyl-CoA molecule. This release of carbon dioxide occurs twice for every glucose molecule that enters the Krebs cycle since two acetyl-CoA molecules are generated from the initial glucose molecule through prior steps of cellular respiration.
The carbon dioxide generated during the Krebs cycle is then transported to the lungs through the bloodstream, where it is eventually exhaled. This is an essential part of the respiratory system's role in eliminating waste products from cellular metabolism.
Therefore, the main product of cellular respiration made by the Krebs cycle is carbon dioxide. It is a byproduct of the oxidation of fuel molecules and is crucial for maintaining the balance of gases in the body and facilitating efficient energy production.
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__________ information addresses the extent to which the same person responds similarly to different stimuli.
Answer:
Distinctiveness
Explanation:
Distinctiveness addresses the person in the same person responds to different stimuli in a similar way, to show behavior.
What is Distinctiveness?When discussing attribution, distinctiveness relates to how rare or commonplace a certain action done by a person is for that particular person.
The term distinctiveness describes how special behavior is to a certain circumstance. A person has low uniqueness if they act the same way in all circumstances, and high distinctiveness if they only exhibit the behavior in certain circumstances.
Therefore a person's stimuli in a similar way to different things provide Distinctiveness in behavior and provide major aspects to respond.
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What best describes the role of light in the overall process of photosynthesis?
Answer:
converts energy from sunlight into glucose
Explanation:
Light provides the energy for assembling small molecules into sugars
8. In 1979, scientists started an experiment in Amazon to determine whether habitat fragments on land behaved like the islands studied by Wilson and his colleagues. How is a habitat fragment on land similar to an island in the ocean? pro likely to be lost from sm
Both are cut off from other habitats. Water separates islands in the ocean. Human development, such as farms, roads, and towns, separates habitat fragments on land.
What is habitat fragmentation on land and island?The emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), resulting in population fragmentation and ecosystem decay, is referred to as habitat fragmentation.Geological processes that slowly alter the layout of the physical environment, as well as human activity such as land conversion, can alter the environment much faster, causing the extinction of many species. Habitat fragmentation is the process by which large, contiguous habitats are divided into smaller, isolated patches of habitat.Habitat islands are habitat fragmented areas surrounded and separated by areas of destroyed or degraded habitat. Habitat fragmentation results in the formation of habitat islands. Nature's highways are wildlife corridors. These are the paths and areas that wildlife use to get from one location to another.To learn more about habitat fragmentation refer to :
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Give at least ten examples of farming of animals which can improve economy of Pakistan. Describe the products and benefits of each with example as well.
Answer:
The main agricultural products are cotton, wheat, rice, sugarcane, fruits, and vegetables, in addition to milk, beef, mutton, and eggs. Pakistan depends on one of the world's largest irrigation systems to support production.
Explanation:
Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?.
If the cellular respiration occurs in an insulated, sealed container, then the container's weight will not change during the reaction due to the law of conservation of mass.
Cellular respiration is the process of breakdown of food material, especially glucose to release energy, which is used to perform the several other life processes in the body.
The law of conservation of mass states that mass can neither be created nor be destroyed it can only be transferred from one form to another. And this is why the mass of the insulated container will remain constant. An insulated material is the one in which no exchange of mass or energy occurs.
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Which of the following descriptions best states how oceans and land absorb the sun's energy differently?
A.
Land retains absorbed heat longer than oceans do.
B.
Land absorbs the sun's energy slowly, while oceans absorb it more quickly.
C.
Land only absorbs radiation that is not harmful to humans.
D.
Land reflects more of the sun's energy, while oceans absorb it slowly and retain it longer.
The statement that describes the major differences as to how the oceans and the land absorbs the energy from the sun is that Land reflects the Sun's energy quickly, while oceans absorb it more slowly.
Earth's oceans are far more important than the land as a source of the heat energy which drives weather and climate. As they also absorb more sunlight and store more heat.
The sun warms up parts of the oceans. Warm waters rise just like warm air rises. So, as the warmer ocean waters begin to rise in a particular area, the cooler ocean waters from a different area will move in to replace the warmer ocean waters, and this creates our ocean currents.
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1.) True or false. A rotation followed by a
lation maps a pre-image to a similar image.
This implies that if we rotate an object by less than 180 degrees, the new image will resemble the original preimage.Additionally, mentioning the rotations' sequence and magnitude is always beneficial when illustrating rotational symmetry.
When an object is rotated and the image looks the same as the pre-image?
A geometric transformation that maintains a figure's size and shape is called an isometry, also referred to as a hard transformation.Under an isometry, points remain on a line, parallel lines remain parallel, angle measurements, parallelism, and collinearity all remain true. A geometric transformation that maintains a figure's size and shape is called an isometry, also referred to as a hard transformation.Under an isometry, points remain on a line, parallel lines remain parallel, angle measurements, parallelism, and collinearity all remain true. A dilation will always result in comparable numbers.A figure's orientation will always alter as a result of dilatation. Another name for a congruence transformation is an isometry.Thus, it keeps both side lengths and angle measurements.Only dilation among the alternatives alters the side lengths, hence it is not an isometry.So, option A is the proper response. Similarity transformations include translation, reflection, rotation, and dilation.Rotation, reflection, and translation preserve both size and shape because they are rigid motions, whereas dilation just makes sure that the shape is preserved. They could be twisted or flipped, so they could not have the same orientation, but they do have the same measurements.Congruent shapes are the result of most transformations.The image resembles the pre-image after one change.Similar implies that they have the same proportions and shape but differ in size. Translations, reflections, and rotations are examples of congruence transformations because the image of a figure after one of them is congruent with its preimage.When the image and preimage are congruent, a transformation is said to be a congruence transformation. An object can become another object by rotation.We can see that spinning an object does not alter its size or shape.Rotational transformations are hence isometric transformations.So a rotation is also an isometry. A stiff motion from some space that preserves distance is called an isometry.For instance, the real line isometry f(x)=x+5 shifts the entire line by 5 while maintaining the point-to-point distances.An isometry of a space that maps a figure to itself is called an object's symmetry in that space. a metric space is mapped onto another or onto itself in such a way that rotation and translation are isometries of the plane, meaning that the distance between any two points in the original space is equal to the distance between their images in the second space.A shape-preserving transformation (movement) in the plane or in space is called an isometric transformation (or isometry).The isometric transformations include translation, rotation, and combinations thereof, such as the glide, which combines a translation with a reflection.To learn more about trasformations refer
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what’s the main cause of extinction
Answer: taking animals profit, hunting, trapping
Explanation:
There are many causes of extinction like overuse of resources, loss of natural habitat, pollution etc.
Overuse of resources - Day by day human population is on a rapid rise and with this increasing population, the usage of resources is being increased which results to extinction of resources and different organisms.
Loss of natural habitat - Due to increasing usage of resources, humans had spread to each and every corner of the world, which in turn had affected the natural habitats of animals.
Pollution- It plays a main role in extinction of different species, due to pollution the air and environment is affected badly, which makes it difficult for animals to survive.
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spinal cord cells are induced to develop as motoneurons under the influence of:
spinal cord cells are induced to develop as motoneurons under the influence of notochord.
What is a notochord?
The notochord is the defining structure of the phylum chordates; a group of animals that include humans. It has essential roles in vertebrate development as it is the primitive beginning to the backbone. It serves as a source of midline signals that pattern surrounding tissues and as a major skeletal element of the developing embryo. It appears in embryos as a small flexible rod made from cells from the mesoderm, which is one of the three layers of cells of embryos.
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If a chromosome contains a mutation such that it cannot bind to the kinetochore complex, what would be the consequence?.
If a chromosome contains a mutation such that it cannot bind to the kinetochore complex then mitotic spindle wouldn't be capable of binding to that chromosome.
Chromosome- The thread-like chromosomes that convey the genetic data from cells to cells are formed of protein as well as a single DNA molecule. Chromosomes are found within the nucleus of the cells in both plants and animals, including humans.
Mutation- Any alteration to a cell's DNA sequence. Mistakes in cell division can result in mutations, as can exposure to environmental DNA-damaging substances.
Kinetochore Complex- The development of attachments among microtubule polymers so each sister chromatid is essential for accurate chromosomal segregation. The macromolecular complex known as the kinetochore, which assembles at each chromosome's centromere during mitosis, acts as a bridge between both the DNA as well as the microtubules.
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If the nyasasaurus parringtoni was found only in rock layer 2 and a fossil of an unknown plant was found only in rock layer 4, what would a paleontologist know about the comparative age and environment of the nyasasaurus parringtoni and the unknown plant?
Please help I'll put you as brainliest!!
The Paleontologist would use the law of superposition to decide the relative ages of the layers. Note that the Paleontologist would also infer that the plant is older than the Nyasasaurus Parringtoni that was found.
Why would the paleontologist make the above inference?The paleontologist would reach the above conclusion because based on the law of superposition, a sedimentary rock layer is are arranged according to age from youngest (topmost) to oldest (bottom).
A paleontologist is a scientist who analyzes the fossil record to learn about the evolution of life on Earth. Fossils are proof of former life on the earth and can be generated from animal bodies or their imprints (body fossils). Trace fossils are a kind of fossil.
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Lucy sets up an investigation by placing a plastic bag over a plant. She secures the plastic bag so that it is completely sealed and nothing can enter. She observes the plant daily to see if it remains green and healthy.
Which TWO questions is her investigation designed to answer?
a
Can the plant perform photosynthesis without a large supply of oxygen?
b
Can the plant perform respiration without a large supply of carbon dioxide?
c
Can the plant perform photosynthesis faster than a plant that is not sealed?
d
Can the plant perform respiration faster than a plant that is not sealed?
e
Can the plant perform photosynthesis without a large supply of carbon dioxide?
f
Can the plant perform respiration without a large supply of oxygen?
Lucy's experiment is designed to answer the following questions:
(e) Can the plant perform photosynthesis without a large supply of carbon dioxide?
(f) Can the plant perform respiration without a large supply of oxygen?
Photosynthesis is the process of synthesizing one's own food by using the inorganic raw materials that are sunlight, water and carbon dioxide. The product of this process is glucose and oxygen is released as the by-product.
Respiration is the breakdown of the glucose in order to gain energy to perform the various functions of the body. This process requires oxygen to produce energy and carbon dioxide is its by-product.
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What is the ciliated neuroglial cell that functions to circulate cerebrospinal fluid?.
To help circulate cerebrospinal fluid in the brain, ependymal cells beat their cilia.
What type of neuroglial cell is ciliated?
Ependymal cells line the ventricles of the brain and the central canal of the spinal cord in single-palisade arrays. They are typically ciliated, with cilia that extend into the ventricular cavity. Brightman and Palay have elucidated their fine structure.
Ependymal cells are ciliated simple columnar glial cells that line the spinal cord's ventricles and central canal. Apical surfaces are covered by cilia (which circulate CSF) and microvilli, which are hair-like projections (which help in CSF absorption).
Therefore, ependymal cells are the ciliated neuroglial cell that functions to circulate cerebrospinal fluid.
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Imagine that a disorder that causes the cell cycle to stop affects the muscle cells of a frog’s leg. What consequence is most likely to follow?
The frog will immediately not be able to use the muscle.
An injury to the muscle will not heal.
The frog will not be able to reproduce.
A broken bone in that leg will not mend.
Answer:
The answer is A
Explanation:
The frog should not be able to move said muscle if the muscle has stopped because of a disorder.
Algae releases carbon dioxide and water when they are burned as biofuel. Why are algae considered to be a good biofuel if they add carbon dioxide to the atmosphere?
Algae are considered to be a good biofuel even if they add carbon dioxide to the atmosphere because:
they are cheaper to growthey do not require as much carbon dioxide to grow as compared to plants.they do not require as much fertilizer as compared to plantsWhy are algae good for biofuel?
Algae have chlorophylls which makes them photosynthetic like green plants. They can also use energy from the sunlight and carbon dioxide from the environment to release oxygen.
Biofuel, though when burned release carbon dioxide. Algae are however, a better option for biofuel as they still use the carbon dioxide released to the environment for food during photosynthesis.
In summary, relying on crops for biofuels might be expensive as these crops would need land and a lot of capital too. While, with the required nutrients, algae serves as a cheaper and better alternative.
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I’ll give brainliest
I need the ones that are left blank answered
Inward extensions of the sarcolemma that dive deeply into the muscle fiber and surround each myofibril are known as _____.
transverse tubules (T-tubules)
6. Human blood consists of red blood cells, white blood cells, platelets,
and a liquid called plasma. Forensic scientists can only determine
DNA from a blood sample if there are white blood cells present in the
blood sample. Based on this, what organelle do mature red blood
cells lack? What do you think is the advantage for mature red blood
cells by lacking this feature?
Red blood cells lack nuclei in them. This provides more space for the cell to store hemoglobin.
What is the purpose of red blood cells?
Red blood cells are in charge of transporting oxygen from your lungs to your body's tissues. Your tissues use oxygen to produce energy and emit carbon dioxide as waste. Your red blood cells transport the carbon dioxide waste to your lungs, where you exhale it.
Due to the lack of a nucleus, hemoglobin also known as the oxygen-binding protein, allows the red blood cells to transport more oxygen. RBCs are also biconcave in shape, which increases the surface area available for oxygen diffusion across their surfaces.
Therefore, RBCs lack nuclei, which help transport more oxygen to the tissues.
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Which of the following is a function of nucleic acids?
The function of nucleic acids from the given options is that nucleic acids store and transmit genetic information.
What are nucleic acids?Nucleic acids are biopolymers, macromolecules, essential to all known forms of life which are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.
Nucleic acids are classified into two main classes of nucleic acids are deoxyribonucleic acid and ribonucleic acid.
Nucleic acids like the deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), carry genetic information which is read in cells to make the RNA and proteins by which living things function.
Nucleic acids do not provide energy and they also do not store fatty acids.
In conclusion, nucleic acids can be found within the nucleus and cytoplasm of our cells.
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How many levels of classification exist with our current framework?
Three
Five
Seven
Nine
Answer: seven
Explanation:
What is solubility? How can you tell if something is soluble?
What is moving from a low velocity to a high velocity called?
Acceleration is the answer
how does the carrying capacity and limiting factors effect on reproductive patterns
Carrying Capacity
Carrying capacity is the number of organisms an ecosystem can support. If the population grows past the carrying capacity, then the environment or organisms will begin to suffer. The carrying capacity of an ecosystem is dependent upon the available resources and the needs of the organisms. Some ecosystems have more available water than others; these areas will have higher carrying capacities.
Limiting Factors
Limiting factors are things that restrict the population of an organism. For example, space, water, and food are all limiting factors. Within one ecosystem there is a finite amount of all resources. These limited resources restrict the number of organisms that can survive in one area.
Reproductive Patterns
Carrying capacity and limiting factors can affect reproductive patterns in different ways. If a population is reaching carrying capacity, then population growth could decrease as organisms do not have enough resources to reproduce. Additionally, some ecosystems have wet vs. dry seasons. In these areas, water, a limiting factor, is more available at specific times of the year. So, organisms might be more likely to reproduce as there is more access to limited resources.
Why is it important for scientists to perform repeated experiments
A. So they can have preferences
B. So they can earn more money
C. So they can have less bias
D. So they can be less objective
Answer:
I think it is probably A
Explanation:
tell me I'm wrong in the comments
what do you think would happen if you introduced an additional predator, such as a coyote, which requires fewer rabbits to reproduce?
Answer:
Rabbits will decrease in number
A dormant protective structure that can form in adverse or normal conditions is called?
A dormant protective structure in bacteria that can form in adverse or normal conditions is called an endospore.
Endospore is a condition in which resistant spore forms inside some bacteria and serves as a shield against harmful conditions. Endospore-forming bacteria are called gram-positive bacteria and can survive under harsh conditions.
In their survival mechanism, gram-positive bacteria divide within the cell and produce intracellular spores which are resistant to harsh conditions. On the other hand, instead of showing development bacteria decide to stay dormant for a while and even longer if the conditions are unfavorable such as low temperature.
However, if the conditions become favorable they resume their growth again.
The conditions that endospores can survive include environmental stress and heat, high temperature, and chemical damage.
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