What is the cellular mechanism of tuberculosis? (Explain)

Answers

Answer 1
Pathogenesis of tuberculosis. TB pathogenesis can be divided in four well-defined events. Inhalation of the mycobacteria is followed by its interaction with resident macrophages through cellular receptors and its internalization. Macrophage bactericidal mechanisms are then activated, including RNI and ROI generation

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If a monohybrid cross is done with a homozygous dominant and a homozygous recessive, what will be the genotypes of the F1 and F2 generation?

Answers

Let's say trait for Tallness of Pea Plants and a cross between a homozygous dominant and a homozygous recessive.

What will be the genotypes of the F1 and F2 generation?

If a monohybrid cross is done with a homozygous dominant and a homozygous recessive, than the genotypes of the F1 and F2 generation

PARENT (P)

GENOTYPES: PHENOTYPES:

Homozygous dominant: TT Tall

Homozygous recessive: tt Short

F1 GENERATION TT x tt

GENOTYPE: PHENOTYPE:

Heterozygous: Tt Tall

F2 GENERATION Tt x Tt

GENOTYPES: PHENOTYPES:

TT Tall

Tt Tall

tt Short

Therefore, Let's say trait for Tallness of Pea Plants and a cross between a homozygous dominant and a homozygous recessive.

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Prompt: Lucy Tan’s story “Safety of Numbers” explores the tension between playing it safe and taking risks. How do you view this tension between safety and risk-taking in your own life? In your journal response, consider any of the following: ● Which side do you naturally lean toward: playing it safe or taking risks? ● Are there certain situations in which you are more likely to play it safe or take risks? ● Do you think you would benefit from moving more toward one option or the other?

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Lucy Tan's story "Safety in Numbers" explores the tension between playing it safe and taking risks. I see this tension between safety and risk, as an example of following life in a balanced way, if you only aim for safety, you will not evolve if you only follow risk, you could go wrong.

The diference behind Safety of Numbers?

Everywhere we look, the perception is immediate that in order to win or have results in this life, it is necessary to take risks. What changes is the size of the result you aim for and this is totally related to the willingness to risk.

Believing that there will be big gains with low risks is practically a utopia. There is a lot of math around these limits. It is obvious that we would all like to not risk anything and achieve great results, too bad that doesn't exist, at least I don't know.

Even to win the lottery it is necessary to take a risk, and the further away these ends are, the more remote the probability of succeeding. I often say that if you want to take little risk as an entrepreneur, start with a popcorn cart. The risks will be small and the possibility of gains, ditto.

With this information, we can conclude that Life is very easy, especially when we teach ourselves a lot, because it is at this stage that challenges provoke us.

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Why does a cat comes near when show it milk and runs away when you show it stick ?

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Cats have evolved certain behaviors that are influenced by their natural instincts and experiences.

When a cat sees milk, it may be attracted to it because it contains nutrients that are important for its survival, and the cat may associate the presence of milk with positive experiences. This can include nursing from its mother as a kitten or catching and consuming prey that contains milk or milk products.

On the other hand, when a cat sees a stick, it may perceive it as a threat or danger, and may associate it with negative experiences, such as being hit or attacked by a predator. This can trigger the cat's natural instinct to flee or hide from potential danger, as a survival mechanism.

Overall, a cat's behavior is influenced by its instincts, past experiences, and environmental cues. It may approach things that it perceives as positive or beneficial, and avoid or flee from things that it perceives as dangerous or threatening.

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Which is the site of the light-dependent reactions of photosynthesis?
mitochondria
stomata
stroma
thylakoids

Answers

I think the best answers would be (Thylakoids)

Answer:

thylakoids

Explanation:

They are the site of the light-dependent reactions of photosynthesis.

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Which quantity may be calculated directly using Newton’s second law of motion? weight velocity position direction

Answers

Answer: Newton's second law of motion can be used to calculate weight.

Answer:

Weight

Explanation:

what cause earthquakes and where does it form

Answers

Answer:

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. ... When the rocks break, the earthquake occurs.

Explanation:

Answer:

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. ... When the rocks break, the earthquake occurs.

Explanation:

According to the scientific theory of biological evolution, natural selection accounts for some but not all species
that have evolved on Earth.
a. True
b. False

Answers

False. Natural selection accrues to all species

Witch pair of unidentified terms is used to define a ray

Answers

A ray is defined by the terms "origin" and "direction." The origin is the starting point or endpoint of the ray, and the direction is the line that extends infinitely in one direction from the origin.

What is a ray?

In geometry, a ray is part of a line with one endpoint extending infinitely in one direction. A ray is represented by a single line segment with an endpoint marked by a dot, called the "origin" of the ray.

Are a ray and line the same?

No, a ray and a line are not the same. A line extends infinitely in both directions and has no endpoints, while a ray has one endpoint and extends infinitely in only one direction. A ray is part of a line with one endpoint marked, called the "origin," and the other end extends infinitely in one direction, called the "direction."

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(HELP FAST) A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right as: 1, 2, 3, 4, and 5. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Perch, Frog, Pigeon, Rats, and Human. A text box below the branching tree diagram is labeled Derived Shared Characteristics. In the box it says from left to right Terrestrial during all stages, Jaws, Walking on two legs, Mammary glands and hair, and Four limbs.

Look at the possible derived shared characteristics, shown in the text box. Think about where these should be placed along the branching tree diagram. Where in the branching tree would you most likely write "lives on land during all life stages"? Explain your answer.

Answers

"The derived shared characteristic 'Terrestrial during all stages' should be placed at the base of the tree diagram."

SupThe characteristic "Terrestrial during all stages" is a shared characteristic among all five species being compared in the branching tree diagram. This means that it is a characteristic that all of these species have in common, and therefore it is likely that it was present in their common ancestor.

Since the base of the tree represents the common ancestor of the species being compared, it makes sense to place this characteristic at the base of the tree. This also helps to show that this characteristic is a defining trait of the group of species being compared and that it has been present in their lineage since their common ancestor.

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please place the following steps in the correct order for a ecosystem progressing through succession​

please place the following steps in the correct order for a ecosystem progressing through succession

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Undersea volcano erupts,then seeds are carried,then grass seeds poke out and later on grow, then shrubs and bushes are formed, then later grow on to be trees, then the island becomes a thick forest, then a volcano eventually erupts, causing the forest to be covered in hot, fresh lava, then the cycle continues! Have a wonderful day!

describe how impulse are transmitted across a synapse​

Answers

A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.

What are the impulse?

Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.

The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.

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What variables would you likely need to control? Check all that apply.

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You didn’t include the options

Why is capsaicin used in the experiment?

Answers

Answer:

Explanation:

Which experiment?

Biotechnologies used in crop production have increased our food supplies, but this food abundance has also increased food and energy waste. How can we decrease energy waste within our food supply chain?

Distribute exported foods to other regions.
Use fossil fuels in food production facilities.
Use imported food resources to feed livestock.
Use energy efficient technology in food storage.

F.L.V.S

Answers

Using energy-efficient technology to store foods will help decrease energy waste within the food supply chain.

Energy-efficient technology

These are technologies that are optimized to consume as low energy as possible during the course of usage.

The abundance of food through biotechnologies requires that more foods are stored.

Not using energy-efficient storage technologies will result in high energy consumption. It is either that or food wastage increases.

Thus, using energy-efficient technologies to store food will limit both food and energy wastage.

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Answer: The Answer is D

Explanation: Be careful, read ur question because some of them are different choices. It was B on my test but same answer.

3. Critique At lunch, your friend stated that her
apple was a living thing, because if she put a
piece under the microscope, she'd see cells.
How will you respond?

Answers

I would respond by acknowledging that indeed an apple does have cells, but that does not necessarily make it a living thing. While it is true that living things have cells, there are other criteria that must be met in order for something to be considered living.

Living things are characterized by their ability to grow, reproduce, respond to stimuli, and maintain homeostasis. An apple, on the other hand, does not have the ability to do any of these things. It cannot grow or reproduce, nor can it respond to stimuli or maintain homeostasis.

Additionally, while an apple does contain living cells, those cells are not actively carrying out the functions necessary for life. They are essentially in a state of suspended animation until the apple begins to decompose.

Overall, while it is understandable that someone might assume an apple is a living thing due to the presence of cells, a more comprehensive understanding of what constitutes life would lead one to conclude otherwise.

A population of insects gradually
decreases in number due to their
changing environment. Eventually, no
individuals are alive.
This process describes which type of
extinction?
A. background extinction
B. immediate extinction
C. explosive extinction
D. endangered extinction

Answers

Answer:

A

Explanation:

A [:

please help me with this i’ll give brainlist:)

please help me with this ill give brainlist:)

Answers

Answer:

D

Explanation:

A week bond between two hydrogen molecules;found between water molecules and nucleotides in DNA

Answers

Answer:The weak bond between two hydrogen atoms, which is commonly found between water molecules and nucleotides in DNA, is called a hydrogen bond.

Explanation:

Answer: Hydrogen Bond

Explanation:

4. Which statement best describes how scientists formed cell theory?
A:Pasteur observed that cork was made of cells and published his findings
widely,
B:Multiple scientists and observations contributed to the formation of cell
theory.
C:Schwann observed that plants are made of cells and shared his theory at
conferences.
D:Remak wrote cell theory after realizing that cells cannot come from non-
living matter.

Answers

Answer:

A is the answer

Explanation:

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How is carbon dioxide produced in a cement plant

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Carbon dioxide is produced in a cement plant when limestone is decomposed.

Cement is produced using lime stone as raw material. The limestone is decomposed according to the reaction;

CaCO3(s) -----> CaO(s) + CO2(g)

The CaO is used to produce cement while CO2 is a waste gas that escapes.

Hence, carbon dioxide is  produced in a cement plant limestone is decomposed.

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Earth’s surface contains a variety of landforms, formed by weathering and erosion. Which of the following describes a change to Earth’s surface due to weathering? Choose the three that apply.

Answers

The following statement below describes a change to Earth’s surface due to weathering :

A. plants creating a crack in a rock formation

B. rocks along the beach being reshaped by wave action.

F. glaciers scraping rocks across the land

What is a Wave?

This is referred to as a disturbance in a medium that carries energy without a net movement of particles.

Weathering can be defined as the breaking down of rocks as a result of certain factors such as rain, heat etc. They also form different types of cracks in the rocks after which they start disintegrating into tiny particles.

This process also occurs when the rocks which are present in the beach are being reshaped by wave action and the others mentioned above which is therefore the reason why option A, B and F was chosen as the correct choice.

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The options are:

A. plants creating a crack in a rock formation

B. rocks along the beach being reshaped by wave action

C. sand being blown to a new location by the wind

D. sediments moved from place to place by a river

E. rain washing soil down a steep hill

F. glaciers scraping rocks across the land

what is required for the initiation of an enzyme

Answers

Answer:

RNA poly merase

Explanation:Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins). RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule. Transcription ends in a process called termination.

If you have a concern about fluoride in your drinking water, how do you get more information?

Answers

Answer:

Contact the Centers for Disease Control and Prevention (CDC).

Explanation:

What two practices complement each other within the global carbon cycle

Answers

Answer:

photosynthesis and metabolism

Explanation:

during photosynthesis, plants use carbon dioxide and produce oxygen. during metabolism, oxygen is used and carbon dioxide is a product.

which occurs during transition ?

Answers

There is no pic added in the question. I could have helped you.

What is true regarding both theories and laws?

Answers

Both laws and theories are supported by scientific experiments and observations.

Laws are not same as theories but they do exists side by side with each other. A law is simply a type of scientific theory which is used to predict behavior of things around us.  A law is a rule which governs how certain things will react, work exists. Example : Laws of motion given by Sir Isac Newton

A theory is more like an explanation to a phenomenon or a law, it explains why and how things happens. A theory supports a law. A theory is also supported by rigid observations and experiments like laws. Example : Theory of Evolution.

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Discuss the definition of bioavailability relative to ecotoxicology and pharmacology.

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Bioavailability in both ecotoxicology and pharmacology is concerned with the availability and accessibility of substances to organisms or target sites, considering various factors that influence their absorption, distribution, and elimination.

Bioavailability refers to the proportion of a substance that is available to have an effect on an organism, either in ecotoxicology or pharmacology. In ecotoxicology, bioavailability relates to the uptake and availability of contaminants in the environment to organisms.It considers the processes that affect the ability of organisms to absorb, distribute, metabolize, and excrete contaminants. In pharmacology, bioavailability refers to the extent and rate at which a drug reaches its target site and is available to produce a therapeutic effect. It involves factors such as drug absorption, distribution, metabolism, and elimination.

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Which statement is true about body systems in an organism?
A Each system works independently.
B All systems perform the same life function.
C All systems work together to maintain health.
D Each system uses the same organs.

Answers

Your answer is C.

Not all systems perform the same function or use the same organs.

All system works together to maintain the health of body systems in an organism.

How does the body system work together to maintain health?

All of the body systems have to work together to keep healthy.  Bones and muscles work together to support and move the body. Respiratory system takes in oxygen from the air. It also gets rid of carbon dioxide. The digestive system absorbs water and nutrients from the food you eat. The circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by the respiratory system,  excretory system, and the skin. The nervous system controls all these activities with electrical impulses. If any system does not work correctly, other systems will also get affected.

Thus, we can conclude that option C is correct and that all systems work together to maintain health.

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Fishing is a major part of many Caribbean economies. The yellowtail snapper and Nassau grouper are important food fishes. However, a lack of adequate regulation has led to overfishing in many areas and consequent damage to reefs.

When grouper fishing is set to 70% what happens to the population of other fish populations in the reef?

Question 1 options:

The lack of grouper fish in the food web caused a spike in the snappers that are usually eaten by the groupers.


Since there were hardly any grouper left as a result, the snapper population also decreased amongst the reef community.


All the other fish populations in the gizmo increased as a result of the fishing favoring the grouper.

Answers

Answer:

The lack of grouper fish in the food web caused a spike in the snappers that are usually eaten by the groupers.

Explanation: because fish.  (i did the test btw so i know this is correct ;)

When grouper fishing is set to 70%. The lack of grouper fish in the food web caused a spike in the snappers that are usually eaten by the groupers. The correct option is A.

What is fishing?

Fishing is a technique to catch fish and other water organism for selling and food purposes. Here the topic is overfishing, which means the over-catching of fish, which disbalances the ecosystem.

In Caribbean economies, fishing is an important act. There are two main fish, groper, and snapper. But due to the deregulation of catching fishes, the grouper fishes are killing more than the snapper fishes. So this would cause a decrease in the population of groupers.

Thus, the correct option is A. The lack of grouper fish in the food web caused a spike in the snappers that are usually eaten by the groupers.

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Which of these is true about this organism? Check each phrase that is true..

Which of these is true about this organism? Check each phrase that is true..

Answers

Answer:

correct (all of them)

Explanation:

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How does the natural setting of the poem contribute to the poem's theme? Evaluate JS [./ox + (x - 2y + z) ds . S: z = 3 - x, 0 < x Mars has two frozen icecaps made of carbon dioxide and which other substance?A: HeliumB: NitrogenC: MethaneD: Water May I please receive help? let g be the function with first derivative g(x)=(x^3 + x) for x>0. if g(2)=7, what is the value of g(5) ?(A) 4.402 (B) 11.402 (C) 13.899 (D) 20.899 OptiLux is considering investing in an automated manufacturing system. The system requires an initial investment of $6.5 million, has a 20-year life, and will have zero salvage value. If the system is implemented, the company will save $880,000 per year in direct labor costs. The company requires a 10% return from its investments. (PV of $1, FV of $1, PVA of $1, and FVA of $1) (Use appropriate factor(s)from the tables provided.)a. Compute the proposed investment's net present value. b. Using the answer from part a, is the investment's internal rate of return higher or lower than 10%? Hint: It is not necessary tocompute IRR to answer this question. Find the value of X True or False? thinking of your speech as a mental dialogue with your audience means that you must multiple choice question. include additional statistics in your speech so that listeners are overwhelmed. Claire's summer job is to mow lawns. The table shows the number of lawns she can mow in a certain number of days. the practice management is ancient but the formal study of the body of management know;edge is relatively new,why is this?answer check wether all the answers are correct or not. please? In response to a steak dinner, certain secretions are needed to aid digestion. What cells in the pancreas would provide these secretions?. Which is most likely to happen in a creative writing workshop?OA. Students write critical papers on famous novels.B. Teachers share their opinions but students do not.O C. Writers read and comment on each other's work.O D. Poets share their writing but fiction writers do not. I need answer please Which was an advantage held by the North over the South at the start of the Civil War?Question 3 options:It had many cotton plantations to provide fabric for uniformsIt had the support of the British navy in blockading southern portsIt had a smaller population that required less food and other suppliesIt had a far more extensive network of railroads and telegraph lines HELP ANOTHER ONE, Need anwser before time runs out... At which point does the planet have the least gravitational force acting on it? Judy Blume's career as an American writer spans four decades and includes many literary awards. She is most famous for her novels geared toward pre-teens. One notable example is Tales of a Fourth-Grade Nothing. However, Blume also has had success writing for an adult audience. Three of her novels for adults reached the New York Times best-seller list. In a 2008 interview Blume remarked, "I have so many stories left to tell!" By that time she had written nearly 30 novels. Judy Blume an exceptionally talented and productive American author.Which of the following statements supports the main idea in this paragraph? Blume only publishes books that she expects will win awards. Blume prefers to write novels for adults rather than pre-teens. Blume has had an extremely and uncommonly long writing career. Blume is a gifted writer who can write for children as well as adults. How can Newtons laws explain why the brain is in danger of injury when there is impact to the head? What best describes the computer's BIOS (basic input-output system)?The operating systemApplication softwareFirmware