Answers
Answer:
A praise for lysosomes is that they are responsible for participating in the action of the lysosmic enzymes that they contain within, these enzymes before the destruction of phagocytosed microorganisms by the antigen presenting cells.
Explanation:
In other words, they are a perfect machinery to trigger an ideal immunological response to a specific pathogen, since thanks to them they are destroyed inside macrophages, so that they present a characteristic molecule to the lymphoid chain, that is, to the cell chain with immunological memory.
Related Questions
suppose that the number of bacteria in a certain population increases according to a continuous exponential growth model. a sample of bacteria selected from this population reached the size of bacteria in two hours. find the hourly growth rate parameter. note: this is a continuous exponential growth model. write your answer as a percentage. do not round any intermediate computations, and round your percentage to the nearest hundredth.
Answers
The hourly growth rate parameter is 69.31%.
The continuous exponential growth model is given by:
N(t) = N(0)e^(rt)
Where N(t) is the size of the bacteria population at time t, N(0) is the initial size of the bacteria population, r is the hourly growth rate, and e is the base of the natural logarithm.
From the given information, we know that the size of the bacteria population doubled in 2 hours, so we have:
N(2) = 2N(0)
We can substitute N(2) and N(0) in the exponential growth model to find r:
2N(0) = N(0)e^(2r)
Dividing both sides by N(0):
2 = e^(2r)
Taking the natural logarithm of both sides:
ln 2 = 2r
Finally, dividing both sides by 2:
r = ln 2/2
To express r as a percentage, we can multiply it by 100:
r (in %) = 100 * (ln 2/2)
The hourly growth rate parameter, expressed as a percentage, is approximately:
r (in %) = 69.31% (rounded to the nearest hundredth).
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When is lactic acid produced
Answers
hope this helps :)
(if you wouldn’t mind can you mark me brainliest?)
What is the dominant and highly supported idea explaining the
origin of the universe?
a Background Radiation
b Newton's laws of motion
c The Copernican System
d The Big Bang Theory
Answers
Answer:
D, The Big Bang Theory.
Explanation:
The dominant and highly supported idea explaining the origin of the universe is the Big Bang Theory.
Biology is the study of nonliving things.
Answers
Answer:
False
Explanation:
Because Biology is the study of living organisms.
TTT 18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants 19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens 20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera 21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm 22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class 23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium 24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population 26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista 25. Ecology is a biological science that deals with all of the following except C. organism D. none
Answers
All of the options are chemical approaches to control micro-organism excepts: B Disinfectants
19. The scientific name for modern man is: B. Homo sapiens
20. kingdoms are prokaryotic organisms placed D. Monera
21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm
22. taxonomic groups contains closely related organisms A. Genus
23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium
24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi
25. Ecology is a biological science that deals with except: D. none
26. The organism that are consumer is D. Scavengers
What is the chemical approaches to control micro-organismDisinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.
Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.
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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants
19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens
20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera
21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm
22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class
23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium
24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population
25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none
26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers
Cholera spreads through
Polluted air
Mosquito bite
Polluted water
Dog bite
Answers
Answer:
it spreads through polluted water.
Explanation:
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Cholera is a water-borne disease spread through polluted and stagnant water bodies. It is caused by a bacteria named Vibrio cholerae by the help of the vector 'Water'.
Hence it is advised to consume boiled and purified water, clean the nearby water bodies and not letting them go stagnant. Always preferred: Hygiene and Sanitation.
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In science class, Maria observes a white-colored cut flower. She sees that the petals turn red when the flower is sitting in a vase that has red-colored water.
She forms a hypothesis that the color reaches the flower through the stem. What should Maria do to confirm the hypothesis?
A.
She should repeat the experiment with the same type of flower and photograph the changes over time.
B.
She should ask her science teacher about the flower to confirm whether her hypothesis is correct.
C.
She should try the experiment with a potted plant with roots and observe any color changes.
D.
She should repeat the experiment with a different species of plant and photograph the changes.
Answer of this question is A. because I just took the question and got it right
Answers
Answer:
She should try the experiment with a potted plant with roots and observe any color changes.
Explanation:
A potted plant is living and carrying out an experiment on a living plant is the best possible way to confirm Maria's hypothesis.
gymnosperms and angiosperms are both able to produce _________, structures that consists of a dormant plant embryo and stored food packaged inside a protective coat
Answers
Answer:
seeds
Explanation:
The answer to the blank is "seeds". Both gymnosperms and angiosperms are seed-producing plants. Seeds are structures that consist of a dormant plant embryo, stored food (endosperm), and a protective coat (seed coat) that helps to protect the developing embryo from desiccation, predation, and other environmental stresses. However, there are some differences in the structure of seeds produced by gymnosperms and angiosperms. Gymnosperms produce seeds that are not enclosed in an ovary, while angiosperms produce seeds that are enclosed in an ovary, which later develops into a fruit.
What is the cause and how to deal with strep throat,
Answers
Answer:
it he cause of spreading germs like bactria and infect sores on ur skin it take a while for them to realizes it uhm im not sure about how to cure/ deal with it
Explanation:
What might happen if water molecules didn't have a slight negative charge on one end and a slight positive charge on the other?
Answers
The polarity of water molecules is crucial to the formation and stability of cell membranes. Without this polarity, water would not be able to form hydrogen bonds, interact with polar molecules, or form stable cell membranes .
Water molecules are composed of two hydrogen atoms and one oxygen atom, and they have a slight negative charge on one end and a slight positive charge on the other.
This arrangement is due to the unequal sharing of electrons between the atoms, with the oxygen atom having a stronger pull on the electrons than the hydrogen atoms. This phenomenon is called polarity, and it is crucial to the unique properties of water.
First, water molecules would not be able to form hydrogen bonds with each other, which are crucial for many of water's unique properties. Hydrogen bonds occur between the positive and negative ends of different water molecules and give water its high boiling point, high surface tension, and the ability to dissolve many substances.
Furthermore, the polarity of water molecules is crucial to the formation and stability of cell membranes. The hydrophilic, or water-loving, heads of phospholipids are attracted to the polar water molecules, while the hydrophobic, or water-fearing, tails face away from the water.
In summary, the polarity of water molecules is crucial to many of its unique properties and is essential to many biological processes. Without this polarity, water would not be able to form hydrogen bonds, interact with polar molecules, or form stable cell membranes.
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What is the predominant molecule that will be reabsorbed from the
descending limb of the Loop of Henle?
O glucose
O albumin
water
O sodium chloride
Answers
Answer:
The predominant molecule that will be reabsorbed from the descending limb of the Loop of Henle is water.
Explanation:
This is because the descending limb of the Loop of Henle is permeable to water but not to solutes such as glucose, albumin, or sodium chloride. As the filtrate flows down the descending limb, water is passively reabsorbed and the concentration of solutes increases.
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Part A The evolution of cuticle presented land plants with a challenge that threatened their ability to live on land. What is this challenge, and why do stomata represent a solution? Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help prevent(s) Cuticle allow(s) water loss from leaves and prevent(s) entry of CO2 required for allow(s) photosynthesis. Stomata allow(s) CO2 to diffuse and can close to allow(s) water loss. Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining You filled in 2 of 4 blanks incorrectly.
Answers
The evolution of cuticles presented land plants with the challenge of preventing water loss from leaves and preventing the entry of CO2 required for photosynthesis, while stomata allow CO2 to diffuse and can close to prevent water loss.
1. Cuticle prevents water loss from leaves and prevents entry of CO2 required for photosynthesis.
2. Stomata allow CO2 to diffuse and can close to prevent water loss.
The waxy cuticle on the surface of leaves helps prevent water loss, but it also creates a barrier that prevents gases from entering and leaving the plant. This presents a problem for photosynthesis, which requires the uptake of carbon dioxide (CO2) and the release of oxygen (O2).
Stomata, have tiny pores on the leaf surface, allowing CO2 to diffuse into the leaf and O2 to diffuse out. Additionally, they can close to prevent excessive water loss through transpiration. The evolution of stomata allowed plants to thrive on land by overcoming the challenge of gas exchange while minimizing water loss.
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Complete Question:
The evolution of cuticles presented land plants with a challenge that threatened their ability to live on land. What is this challenge, and why do stomata represent a solution?
1. Cuticle ___ water loss from leaves and ___ entry of CO2 required for photosynthesis.
2. Stomata ____ CO2 to diffuse and can close to ______ water loss.
Fill the blanks with allow or prevent appropriately.
what is the difference between cork formation and gum formation in the plants as an immune mechanism
Answers
Answer:
Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.
Explanation:
Does the pharynx of human respiratory system have cartilage and epithelium?
Answers
Answer:
There is no cartilage but there is epithelium
Explanation:
The pharynx of the human respiratory system does not contain cartilage.
The pharynx, part of the human respiratory system, is a muscular tube that connects the nasal cavity and mouth to the larynx and esophagus. It serves as a passage for air and food. The gorge is made up of several regions, each with its own distinctive features.
The nasopharynx, the top part of the throat, contains no cartilage. Instead, it is lined with pseudostratified ciliated epithelium.This special epithelium helps to trap and transport mucus along with any particles or pathogens in the digestive system for elimination.
These regions also lack cartilage but are lined with stratified squamous epithelium. This type of epithelium provides protection from mechanical stress and potential abrasion caused by the passage of food and other substances down the pharynx.
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SECTION B: QUESTION 2 2.1 The diagram below shows part of the human ear. 2.1.1 2.1.2 2.1.3 2.1.4 E A B C Explain the consequence if structure E lost its flexibility. Describe the process of hearing. D 2.Z Identify structures A and B Give the LETTER and the NAME of the parts that: (a) equalises pressure on both sides of the tympanic membrane (b) absorbs excess pressure waves from the inner ear (2) (2) (2) (2) (7) (15)
Answers
If structure E (stapes) lost flexibility, it would impair sound transmission, leading to hearing sensitivity.
Process of hearing: Sound waves enter the ear, vibrate the eardrum (tympanic membrane). Ossicles (A: malleus, B: incus) amplify vibrations to inner ear. Vibration of fluid in cochlea stimulates hair cells, converting to electrical signals for interpretation.
Structure A: Malleus
Structure B: Incus
(a) Structure C (eustachian tube) equalizes pressure on both sides of the tympanic membrane.
(b) Structure D (round window) absorbs excess pressure waves from the inner ear.
If structure E, which is the ossicles (specifically the malleus, incus, and stapes), lost its flexibility, it would have a significant consequence on hearing. The ossicles play a crucial role in the process of sound transmission. They amplify sound vibrations that enter the ear through the outer ear and transfer them to the inner ear. The flexibility of the ossicles allows them to vibrate in response to sound waves, transmitting these vibrations to the fluid-filled cochlea in the inner ear.If structure E lost its flexibility, the transmission of sound vibrations would be impaired. This would result in a reduced ability to perceive and interpret sound. Hearing sensitivity would be significantly compromised, and sounds may appear muffled or distorted. It may become challenging to distinguish different pitches or understand speech clearly.The process of hearing involves several steps. When sound waves enter the outer ear, they travel through the ear canal and reach the eardrum (tympanic membrane). The vibrations of the eardrum are then transferred to the ossicles (structures A and B in the diagram), which amplify and transmit the vibrations to the cochlea (structure C). The cochlea is responsible for converting the mechanical vibrations into electrical signals that can be interpreted by the brain. These signals are then sent to the brain via the auditory nerve, where they are processed and perceived as sound.Structure A, known as the Eustachian tube, equalizes pressure on both sides of the tympanic membrane. It connects the middle ear to the back of the throat, allowing air to flow in and out, maintaining equal pressure on both sides of the eardrum.Structure B, called the round window, acts as a pressure relief valve. It absorbs excess pressure waves from the inner ear, preventing damage to delicate structures by allowing fluid in the cochlea to move in response to the sound vibrations.Overall, the ear is a complex and intricate system that relies on the interaction of various structures to enable the sense of hearing.For more such questions on Hearing sensitivity:
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Hearing involves a process of sound wave transduction through the tympanic membrane and ossicles. If the tympanic membrane (E) loses its flexibility, sound quality may diminish. The Eustachian tube and cochlea serve to manage pressure within the ear.
Explanation:The process of hearing (audition) involves the transduction of sound waves into a neural signal. When the tympanic membrane (structure E in your diagram), or eardrum, is struck by sound waves, it vibrates. These vibrations are then transferred to the ossicles, which are three small bones in the middle ear. The ossicles are identified as structures A (Malleus or Hammer) and B (Incus or Anvil) in your diagram. Sound waves are finally transduced into a neural signal in the inner ear.
If the tympanic membrane was to lose its flexibility, it would not vibrate as effectively when struck by sound waves. This could diminish the quality of sound and potentially lead to hearing loss.
The Eustachian tube equilibrates air pressure on both sides of the tympanic membrane. This would be your answer to part (a) of the lettered question. Part (b) refers to the role of the cochlea in the inner ear, which helps to absorb excess pressure waves from the inner ear.
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Causes of megaloblastic anemia
Answers
Answer:
Megaloblastic anemia is most often due to hypovitaminosis, specifically vitamin B12 (cobalamin) and folate deficiencies, which are necessary for the synthesis of DNA. [3] Copper deficiency and adverse drug reactions (due to drug interference with DNA synthesis) are other well-known causes of megaloblastic anemia.
Explanation:
Hope I helped.
Select the correct answer. Which statement is true about crossing over of genes? A. Crossing over does not occur between genes that are far apart from each other on a chromosome. B. Frequency of crossing over is related to the distance between linked genes. C. Genes that are close to each other frequently cross over.
Answers
Crossing over does not occur between genes that are far apart from each other on a chromosome. Thus option A is correct.
what is crossing over ?The process in which exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis occur called as crossing over.
In this process two new allelic combinations in the daughter cells are formed.
Three types of crossing over occur such as Single Crossing Over where only one chiasma is formed between the non-sister I chromatids.
In Double Crossing Over two chiasmata are formed.
In multiple Crossing Over three or more chiasmata are formed in the-tetrad.
Thus option A is correct.
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how do Euglena reproduce?
Answers
For children from two to five, chikcare spaces are best organized into centers for play.
True or false ?
Answers
Answer:
True
Explanation:
الاحرف التالية COMPT اختصار ل اي مصطلح بعلم الادوية ؟؟
Answers
Answer: ELMO
Explanation:
Cellular Respiration Answer key worksheet
Answers
The Cellular Respiration worksheet is given in the image attached.
What is Cellular Respiration?Cellular respiration is seen as a metabolic process that occurs in cells, where organic molecules are broken down to release energy in the form of ATP (adenosine triphosphate).
This process involves three main stages: glycolysis, the Krebs cycle, and oxidative phosphorylation. During glycolysis, glucose is broken down into pyruvate, which then enters the Krebs cycle, where it is further broken down to release energy-rich electrons.
Therefore, These electrons are then passed down a series of electron transport chains to produce ATP through oxidative phosphorylation. Cellular respiration is a vital process for all living organisms, as it provides the energy needed for various cellular processes and activities.
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Why must an owl
swallow its prey whole?
Answers
Answer:
Owls swallow their prey whole or in large pieces but do not produce enough stomach acid to digest bones, fur, feathers and scales. Because undigested body parts could injure the owl’s intestine, the animal needs another way to deal with that part of its diet. That’s where owl pellets come in. An owl has two stomachs. Most birds can’t chew their food, and owls are no exception. Owls usually swallow their prey whole; they differ from other species of birds because they don't have a crop, the baglike organ used to store food after it has been swallowed so that it can be digested later
Explanation:
Hope it Helps :)
Answer:
Owls swallow their prey whole or in large pieces but do not produce enough stomach acid to digest bones, fur, feathers and scales. Because undigested body parts could injure the owl's intestine, the animal needs another way to deal with that part of its diet. ... The bones, fur, feathers and scales remain in the gizzard.
Explanation:I’m big brain
Which color of light has the least energy?
A. Blue
Ο Ο
B. Red
C. Orange
D. Violet
Answers
Reason(s): The more energy a wave has, the higher its frequency, and vice versa. When it comes to visible light, the highest frequency color, which is violet, also has the most energy. The lowest frequency of visible light, which is red, has the least energy.
________________ ______________ is a learned trait and is not genetically passed down to offspring.
Answers
Answer:
Semi-permanent.
Sorry if im wrong
Why you think the human population has been to grow so much in the last 500 years?
Answers
Answer:
Because of how many advancments we have made in that time
Explanation:
Explanation:
due to decrease in death rate and increase in birth rate because of new facilities
After an earthquake, a small group of beetles from a much larger population becomes trapped in a cave. They are able to persist (continue living and reproducing) in the cave, but they cannot migrate back to the source population outside the cave. What would most likely result from this scenario
Answers
Answer:
They will evolve into a new species
Explanation:
The most likely result from this scenario is that the now isolated group of beetles will evolve and become a new beetle species that is unique from the old population.
The beetles have become geographically isolated from the original population and this makes them become a new species through the process of allopatric speciation. Allopatric speciation is an evolutionary mechanism of species formation as a result of being geographically separated from the old population. It is as opposed to sympatric speciation in which a new species is formed within a population of species without being geographically barred from the original population.
The fact that the isolated species are now in an environment that is different from that of the original population means that they will take a different route to evolve in terms of trying to adapt to the changes that would be occurring in their environment.
you will be allowed on campus only if you have antibodies for the virus. choose all equivalent statements. [at least one of the choices is equivalent.] group of answer choices if you are allowed on campus, then you have antibodies for the virus. you are allowed on campus, and you have antibodies for the virus. having antibodies for the virus is a sufficient condition for being allowed on campus. not having antibodies for the virus prohibits your entry onto the campus.
Answers
All the all equivalent statements are:
A: If you are allowed on campus, then you have antibodies for the virus.
B: Having antibodies for the virus is a sufficient condition for being allowed on campus.
C: Not having antibodies for the virus prohibits your entry onto the campus.
What are Antibodies ?Antibodies are proteins produced by the immune system to identify and neutralize foreign substances, such as viruses and bacteria, in the body. They work by binding to specific proteins or antigens on the surface of pathogens, marking them for destruction by other components of the immune system.
The production of antibodies is a key aspect of the adaptive immune response, as the immune system "learns" to recognize and respond to specific pathogens it has encountered in the past. The presence of antibodies in the blood can indicate past exposure to a particular pathogen and provide some level of immunity against future infections.
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The map below shows the temperatures in parts of North America on an average spring day.
Which statement best summarizes the temperature pattern shown in the weather map?
A. temperatures increase from the southeast to the northwest.
B. Temperatures decrease from the northeast to the northwest.
C. Temperatures increase from the southwest to the northeast
D. Temperatures decrease the from the southwest to the northeast.
Answers
Answer: B
Explanation: You're Welcome
Answer:
B. Temperatures decrease from the northeast to the northwest.
Explanation:
Peter is burning fossil fuels as he uses the lawnmower. Which greenhouse gases is he generating?
Answers
Answer:
carbon dioxide and methane
OAmalOHopeO
Which two statements are true about adaptations in unicellular and multicellular organisms?
A. Unicellular organisms can have behavioral adaptations, but only multicellular organisms have structural adaptations.
B. Both multicellular and unicellular organisms have structural and behavioral adaptations.
C. Both multicellular and unicellular organisms are able to pass on adaptations to offspring.
D. Multicellular organisms have adaptations, but unicellular organisms are too simple to have adaptations.
Answers
Answer:
The correct statement is B. Both multicellular and unicellular organisms have structural and behavioral adaptations.
Explanation:
Adaptations are traits that help organisms survive and reproduce in their environment. Both unicellular and multicellular organisms have evolved a variety of structural and behavioral adaptations to help them thrive in their respective environments.
For example, unicellular organisms like bacteria may develop resistance to antibiotics, while other unicellular organisms like algae may have adaptations to photosynthesize and produce their own food. Multicellular organisms, on the other hand, have evolved complex structures and behaviors, such as the specialized organs and systems in animals, and the various reproductive strategies in plants.
Both unicellular and multicellular organisms are also able to pass on adaptations to their offspring through genetic inheritance. Therefore, statement C is also true.
Statement A is false because unicellular organisms can have both structural and behavioral adaptations. And statement D is false because unicellular organisms have been shown to have a variety of adaptations to help them survive in their environment.
Explanation: