the causative agent of a disease modified in such a manner that it will no longer cause the disease but will still promote the production of antibodies is a(n)
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The society has always been concerned about issues of health and disease. This led to ongoing efforts to raise living standards and preserve a healthy social environment.
As many theories about health, illnesses, and treatments proliferated, the practise of medicine was improved on a scientific basis. The introduction of biomedicine and the germ idea fundamentally altered how people viewed health and illness, and efforts in scientific research soon began to link each disease to a material cause. This provided a logical explanation for a particular category of disorders, but it also raised greater concerns about the origins of a number of other illnesses. There is general agreement that health and well-being include more than only the absence of disease, infirmity, defect, or death. This is true despite the introduction of more theories and notions. This calls for a comprehensive approach to medical care.
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Related Questions
answer my questions plz
Answers
Answer:
Micro ---
\( {10}^{ - 6} \)
Explanation:
mark me as brainliest ❤️
Hello User, Given below are the answers:-
• micro → 10^-6
• deca → 10
• mega → 10^6
• giga → 10^9
• femto → 10^-15
Hope it helps you...Answered by Benjemin ☺️
✅
Which microorganism among the following is not associated with nitrogen cycle?
penicillin
acetobacter
rhizobium
blue-green algae
Answers
Answer:
Penicillin
Explanation:
Penicillin is not associated with nitrogen fixing bacteria because it is an antibiotics. It is an antibiotic that is developed to treat some bacteria infections like pneumonia. It is use to treat infections that are caused by bacteria and it is gotten or produced from penicillin mold. Therefore, it is not in one way or the other associated to nitrogen cycle.
The cardiovascular system is composed of the heart, blood vessels, and blood. Which is the best analogy to this system
and its parts?
Answers
Answer: it’s c
Explanation:
Just did it
You are looking at onion cells under an microscope and wants to khow hoow big the cells really are you mesuare the size of the cells as it appears and find out that it mesuares 20mm with a magnification of a x1000 work out the actual sixe of the cell
Answers
The actual size of the onion cells under microscope is 0.02 mm
Magnification = Image / Actual
Image= 20 mm
Actual= x mm
1000x = 20 mm/ x mm
Actual = 0.02mm
Magnification is the number of times a picture is magnified in comparison to the actual size of the thing. The overall magnification of a microscope is determined by the eyepieces and the objective lens. A biological microscope with 10x eyepieces and a 50x objective, for example, has a magnification of 500x. Hence, the actual size of the onion cells is 0.02 mm, when placed under a microscope with a 1000x magnification it image size now becomes 20 mm.
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Which of the following claims is NEITHER testable NOR falsifiable?
A. If I get this question correct, then I will receive two points.
B. When I eat breakfast before I start my day, I am able to focus better.
C. My dog barks whenever a large truck comes by.
D. There are megalodons in the deepest parts of the ocean.
Answers
Hope this helps!
many mutations in the bithorax gene are known. each mutation has a different effect on development of the reduced wing-like t3 appendage, the haltere. none of these mutations occurs in the coding sequence of bithorax, instead, where are these mutations and how do they effect development?
Answers
The mutations in the bithorax gene that affect the development of the reduced wing-like t3 appendage, known as the haltere, occur in regulatory regions or control elements of the gene rather than in the coding sequence itself.
These mutations alter the expression and regulation of the bithorax gene, leading to changes in its activity during development.
The bithorax gene is a homeotic gene that controls the formation of body segments and appendages in fruit flies. It contains regulatory regions called enhancers that determine where and when the gene is expressed.
Mutations in these enhancer regions can disrupt the normal pattern of bithorax expression, resulting in abnormal development of the haltere.
For example, some mutations may cause the enhancers to be non-functional, leading to a loss or reduction in bithorax expression in the developing haltere. This can result in a complete or partial transformation of the haltere into a wing-like structure.
Other mutations may alter the timing or spatial pattern of bithorax expression, leading to changes in the size, shape, or identity of the haltere.
These mutations can affect the interactions between the bithorax gene and other genes involved in appendage development, causing developmental abnormalities.
Overall, the mutations in the regulatory regions of the bithorax gene disrupt the normal control of gene expression, leading to diverse effects on the development of the haltere in fruit flies.
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ilang hati ang gagawin mo sa pizza? bakit?
Answers
Answer:
I will make 8 slices....
because I do love it....
it depends on you and ur choice how many pieces of what type of shape you want to have...
Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it completely and throws Sheila forward onto the pavement. If there is no net force on the system, what is Sheila’s velocity immediately after she is thrown from the bike?
Answers
Answer:
5.7 m/s
Explanation:
The computation of Sheila 's velocity right after she gets thrown out of the bike is shown below:
1) The Physical principle: conservation of momentum.
If there is no net external force operating on a system, so the system's total momentum is conserved
The momentum, p, is a vector magnitude that is determined as the product of the mass by the velocity:
P = mv.
2) Taking into account therefore that there is no net force on the device, Sheila and the momentum of the bike are the identical pre and post collision.
Based on this, the calculation is as follows
Momentum before the collision:
\(P_1 = (mass\ of\ Sheila + mass\ of\ the\ bike) \times velocity\)
\(P_1 = (60kg + m) \times v_1\)
= 340 kg m/s
Now Momentum after the collision:
\(P_2 = mass\ of\ sheila \times velocity\ of\ Sheila + mass\ of\ the\ bike \times velocity\ of\ the\ bike\)
\(P_2 = 60kg \times v_2 + m \times 0 = 60kg \times v_2\)
\(P_1 = P_2\)
\(= (60kg + m) \times v_1\)
\(= 60kg \times v_2\)
\(= 340 kg .\ m/s\)
\(= 60kg \times v_2\)
\(v_2 = \frac{340\ kg .\ m/s }{60\ kg}\)
= 5.7 m/s
The velocity of Sheila immediately after she is thrown from the bike is 5.67 m/s.
The given parameters;
mass of Sheila, m = 60 kgmomentum of Sheila, P = 340 kg.m/sThe velocity of Sheila immediately after she is thrown from the bike is calculated as follows;
P = mv
where;
v is the velocity Sheila
\(v = \frac{P}{m} \\\\v = \frac{340}{60} \\\\v = 5.67 \ m/s\)
Thus, the velocity of Sheila immediately after she is thrown from the bike is 5.67 m/s.
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Which molecule prevents a muscle contraction from occurring when the muscle is at rest?
Answers
Troponin-tropomyosin molecules prevents a muscle contraction from occurring when the muscle is at rest.
What is muscle contraction?The activation of tension-producing regions within muscle cells results in muscular contraction. Because muscle tension can be created without changes in muscle length, such as when holding something heavy in the same position, muscle contraction does not always imply muscle shortening in physiology. Muscle relaxation, or the return of the muscular fibers to their low tension-generating state, occurs after a muscle contraction has finished.
Both length and tension can be used to characterize muscle contractions. If the muscle tension varies but the muscle length doesn't, the muscle contraction is said to be isometric. A muscle contraction is isotonic, however, if the tension in the muscle remains constant during the contraction.
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Check the image for question
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Hope this helps
What is the function of arteries due to arterial compliance?
Answers
The function of arteries due to arterial compliance is to ensure efficient blood flow and protect organs from high blood pressure and cardiovascular disease.
Arterial compliance refers to the ability of arteries to stretch and accommodates changes in blood volume and pressure during the cardiac cycle. The compliance of arteries is essential for maintaining healthy blood flow and protecting organs from high blood pressure.
When blood is ejected from the heart during systole, the arteries expand and store some of the blood volume, which is then released during diastole to maintain blood flow to the tissues.
This process helps to reduce the pulsatility of blood flow and maintain a more constant perfusion pressure to the organs.
Additionally, arterial compliance helps to reduce the workload on the heart by reducing afterload, which is the resistance to blood flow that the heart must overcome to eject blood from the left ventricle.
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Studying DNA to find evolutionary similarities among organisms is a type of ____ evidence.
I am very confused on what the answer is
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Studying DNA to find evolutionary similarities among organisms is a type of molecular evidence.
What is molecular evidence in DNA studies?For researching the relationships of organisms that are not closely related, such as those that originated from a common ancestor many millions of years ago, molecular evidence is very helpful.
Scientists may determine molecular commonalities between these animals that point to a common ancestor by comparing their DNA sequences, and they can also determine the evolutionary routes that resulted in their divergence.
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Look at the diagram. Name organ 3.
Answers
Answer:
Colon/Large intestine
A cell in a multicellular organism receives a signal to increase production of a transmembrane protein found in the cell membrane. Which of the following combinations of structures is expected to be directly involved in the process?
a) Nucleus, chloroplast, cytoskeleton, ribosome
b) Nucleus, ribosome, ER, Golgi complex
c) Lysosome, mitochondria, Golgi complex, cytoskeleton
d) Chloroplasts, nucleus, mitochondria, lysosome
I know that c is wrong, but could someone help explain which is the right one and why c is wrong?
Answers
Answer:
b) Nucleus, ribosome, ER, Golgi complex
Explanation:
"B" is correct because, with protein production, DNA must first be transcripted to RNA in the nucleus, then the RNA travels to a ribosome at the ER to start translation (RNA to amino acid sequence). Finally, it is sent to the Golgi complex to be further processed and/or sorted to be transported to its destination (in this case, it will be sorted to be transported to the cell membrane).
"C" is incorrect: the mitochondria, cytoskeleton, and lysosome do not play a direct role in protein synthesis.
The cytoskeleton is primarily involved with maintaining the structure of the cell along with spindle development in mitosis.The mitochondrion is "the powerhouse of the cell" and is mainly involved with cellular respiration: the process of converting glucose to energy (ATP).Lysosomes' typical function is to break down excess/worn-out organelles and to kill pathogens. Lysosomes have been hypothesized to be part of protein synthesis; however, it has not been confirmed yet.You discover a new species of insect. You learn that its gamete contain 4 chromosomes each and contain 20 pg of DNA. Given this information, what can you conclude about this organism's somatic cells? a They will contain 4 sister chromatids. b They will contain 40 pg of DNA during GO c They will contain 2 chromosomes during prophase of mitosis. d They will be haploid (2n)
Answers
options a, b, and c are not accurate conclusions based on the given information.
The correct answer is d) They will be haploid (2n). Gametes are haploid cells, meaning they contain half the number of chromosomes as somatic cells. Since the insect's gamete contains 4 chromosomes, the somatic cells would have a diploid number of 8 chromosomes (2n = 8). The amount of DNA in the gamete is not necessarily indicative of the amount of DNA in the somatic cells, as somatic cells can undergo DNA replication and have varying amounts of DNA depending on the stage of the cell cycle.
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Brad made the following table to show the difference between a seed and a sprout, but he made a mistake. Which statement explains why this table is incorrect?
Seed This is the first stage of the life cycle. Seeds have no leaves and come in many shapes, sizes, and colors.
Sprout In this stage the plant breaks out of the ground. Sprouts have small roots and many leaves.
A. Seeds have one or two small leaves.
B. Seeds always come in the same size.
C. Sprouts usually only have two leaves.
D. Sprouts have not broken out of the ground.
Answers
Answer: my best guess: A. Seeds have one or two small leaves.
Explanation: I hope this helps!
As per the given scenario, Seeds always come in the same size is incorrect. The correct option is C.
What is seed germination?The process of a seed germination is described as the culmination of a series of actions that start with hydration and end with the emergence of the embryonic axis (typically the radicle) from the seed coat.
A seed's seed coat allows water and oxygen to enter when it is exposed to the right conditions. The cells of the embryo begin to expand.
The seed coat then splits open, allowing the shoot or plumule that contains the leaves and stem to emerge first, followed by the root or radicle.
Brad erred when creating the table to illustrate the distinction between a seed and a sprout. There is only one size for seeds is untrue.
Thus, the correct option is C.
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Why is the amount of gas you measured only an estimate of the atp produced? consider what you know about liquids and gases. how can you change the setup to make it more accurate?
Answers
The amount of gas measured in a setup is an estimate of the ATP produced because gases are subject to various physical and environmental conditions that can affect their volume and behavior.
Gases are highly sensitive to temperature, pressure, humidity, and other factors, which can cause them to expand or contract.
Moreover, the process of measuring gas production involves several steps that can introduce errors, such as fluctuations in temperature or pressure, inaccuracies in measurement instruments, or the presence of other gases that can interfere with the measurement.
To make the setup more accurate, one can take several steps, such as:
Controlling the temperature and pressure of the system: By controlling the temperature and pressure, one can reduce the impact of environmental factors on gas behavior, and obtain more consistent and reliable measurements.Using more precise measuring instruments: One can use more accurate and precise measuring instruments, such as digital sensors, to measure the volume of gas produced.Conducting multiple trials and averaging the results: To reduce the impact of errors, one can perform multiple trials of the experiment and average the results.Using a gas-tight setup: To prevent the escape of gas and ensure accurate measurements, one can use a gas-tight setup that prevents the exchange of gas with the environment.To know more about rate of diffusion refer to-
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A hundred years ago there were 350 000 blue whales.
Now there are only about 10 000 blue whales.
Suggest why the blue whale population has decreased.
Answers
Answer: The primary threats currently facing blue whales are vessel strikes and entanglements in fishing gear .Also illegal hunting.
Explanation:
Answer:
Blue whales were significantly depleted by commercial whaling activities worldwide. The latest stock assessments of blue whales include data for various stocks, including areas of the North Pacific and western North Atlantic Oceans.
Whaling killed hundreds of thousands of blue whales from the early 1900s until it became illegal in 1966. Blue whales continue to be threatened by boats, anthropogenic noise, pollution with toxic chemicals, climate change (which may affect how the population of krill), and from fishing.
How can we prevent blue whales from extinction?
Adopt. Adopt a whale and help us protect these amazing creatures.
Join. You can join our team and help us save whales and dolphins.
Donate. Your gifts help us take action for whales and dolphins.
Shop. Support WDC by shopping for yourself or a friend.
Hope this helps. Thanks!
describe what is a ramachandran plot is and what does it represent. also give an approximate phi and psi angles for an alpha helix, a anti parallel beta sheet, and a proline helix.
Answers
A Ramachandran plot is a graphical representation used in structural biology to analyze the torsional angles of amino acid residues in protein structures. It depicts the distribution of phi (ϕ) and psi (ψ) angles, which describe the rotation around the N-Cα and Cα-C bonds, respectively, in a polypeptide chain.
The Ramachandran plot helps to identify regions of protein backbone conformation that are energetically favorable and sterically allowed. It provides insights into the allowed conformations of amino acids and aids in validating protein structures, identifying unusual conformations, and detecting structural errors.
Approximate phi and psi angles for common secondary structure elements are as follows:
Alpha helix: The phi angle is around -60 degrees, and the psi angle is around -45 degrees. These values reflect the characteristic right-handed helical conformation of an alpha helix.Antiparallel beta sheet: The phi angle is around -120 degrees, and the psi angle is around +120 degrees. In antiparallel beta sheets, adjacent strands run in opposite directions, resulting in a characteristic zigzag conformation.Proline helix: Proline has a unique structural feature due to its rigid cyclic structure. The phi angle is around -60 degrees, and the psi angle is around +120 degrees for a proline residue in a polyproline helix conformation.It is important to note that these values are approximate and can vary depending on the specific protein and its local environment. The Ramachandran plot allows researchers to explore the conformational space of amino acid residues and identify regions that conform to energetically favorable structural characteristics.
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How are mitosis and binary fission similar?
A. They produce identical daughter cells.
B. They occur only in prokaryotes.
C. They involve division of nuclei as well as cytoplasm.
D. They occur only during sexual reproduction.
Answers
Answer:
They produce identical daughter cells.
Water is a polar molecule. What property of water causes this polarity? The oxygen atom is more electronegative than the hydrogen atoms The oxygen atom and the hydrogen atoms are at opposite ends of the molecule Both the oxygen and hydrogen atoms have similar electronegativity Electrons are shared equally
Answers
The oxygen atom is more electronegative atom than the hydrogen atoms.
The property of water that causes its polarity is the difference in electronegativity between the oxygen atom and the hydrogen atoms. Electronegativity refers to the ability of an atom to attract electrons towards itself in a chemical bond. Oxygen is more electronegative than hydrogen, which means it has a stronger pull on the shared electrons in the covalent bonds with hydrogen.
As a result, the oxygen atom in a water molecule attracts the shared electrons more strongly, giving it a partial negative charge (δ-) and leaving the hydrogen atoms with a partial positive charge (δ+). This unequal distribution of charges creates a polarity in the water molecule, with one end being slightly positive and the other end being slightly negative.
It is this polarity of water that allows it to form hydrogen bonds with other water molecules and with other polar molecules, giving water its unique properties such as high surface tension, strong cohesion and adhesion, and its ability to dissolve a wide range of substances.
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which blood vessels allow substances to pass through their walls?
Answers
Answer: 9. Arteries
10. pivot
11. ligament
hope this helps <3
cytoskeletal structures that are not found in all cell types are group of answer choices microtubules. intermediate filaments. microfilaments. intermediate tubules. fibrous filaments
Answers
The cytoskeletal structures that are not found in all cell types are intermediate filaments.
Eukaryotic cells have a cytoskeleton consisting of filamentous proteins that supports the cell and its cytoplasmic components mechanically. Three main kinds of components, which vary in size and protein content, make up the cytoskeleton in all cells. With a diameter of roughly 25 nanometers (nm), microtubules are the biggest form of filament and are made of the protein tubulin. The smallest kind, actin filaments, are formed of the actin protein and have a diameter of just around 6 nm. As the name implies, intermediate filaments have a diameter of around 10 nm. In contrast to microtubules and actin filaments, intermediate filaments are made up of several distinct subunit proteins.
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Explain how animals are selected for breeding.
Answers
Answer:
Selective breeding involves choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics. Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields.Jul 21, 2021
Explanation:
PLS MARK BRAINLIEST
At the coordinates 45 degrees W & 72 degrees N it is 9:32 AM. What time is it at the coordinates 75 degrees W & 45 degrees S? 8:32 AM, 10:32 AM, 11:32 AM, 7:32 AM
Answers
Answer:
The correct option is;
7:32 AM
Explanation:
The information given are;
The time at 45 degrees W and 72 degrees N = 9:32 AM
The variation of time with lines of longitude is given as 15 degrees for each 1 hour variation, therefore, where we have the other location at 75 degrees W and 45 degrees S, the difference in the longitude = 75 - 45 = 30 degrees west of the initial location
Moving west is in the opposite direction of the Earths rotation, therefore, we subtract 1 hour for every 15 degrees giving 30/15 = 2 hours subtracted
The time at 75 degrees W and 45 degrees S is therefore, 9:32 AM - 2 hour = 7.32 AM
The latitude of a place left out in the calculation of the relative time of a place.
How does water change the shape of Earth's surface?
I
Answers
Answer:
water can dissolve rocks and cement thru a process called erosion
Explanation:
Answer:
Without the oceans the Earth would look like it had dents in it. It wouldn't have the round smooth-ish appearance it has with the water.
which of the following is a parasitic relationship
Answers
Answer:
I think It is the barnacles
Answer:
its A
Explanation:
1. Each kingdom can be divided into different domains.
True or False
2. A genus cannot contain members of different species True or False
3. Organisms can belong to the same class but different order True or false
Answers
Answer:
1...true
2...true
3...false
i did not mean to make this
Answers
Answer:
wait how could you make something that you didnt mean to make, lol anyways I hope you have an amazing day, and be careful of this virus
Explanation:
(1) what is active transpot and activesap (2)what happens if transportation does not occur answer me i will mark u as brainlist
Answers
1.active transport. The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. Active transport requires the assistance of a type of protein called a carrier protein, using energy supplied by ATP. SAP Activate is a content-rich and agile methodology for implementation and/or upgrade of SAP solutions across industries and customer environments. It sets out an innovative adoption framework that expedites SAP S/4HANA implementations.
2.If the process of transpiration stops in plants, then the excess water inside the plants will not be able to come out. Hence, the plants will burst due to the presence of excess of water inside them.