The phenomenon in which rna molecules in a cell are destroyed if they have a sequence complementary to an introduced double-stranded rna is called
a. rna interference.
b. rna obstruction.
c. rna blocking.
d. rna targeting.
e. rna disposal.

Answers

Answer 1

Answer: a. rna interference.

Rna interference  was known by other names like  co-suppression  because it has become evident that RNAi has immense potential in inhibiting desired genes  by neutralizing targeted mRNA molecules Two types of small ribonucleic acid (RNA) molecules that are central to RNA interference are  miRNA and siRNA. 


Related Questions

Which of these is the best description of a typical organism in the plant kingdom?

Answers

Answer:

makes its own food

Explanation:

The unique feature of a typical organism in the plant kingdom is that they can synthesize their own food with the help of sunlight.

What do you mean by Organism?

An organism may be defined as a living thing made up of one or more cells and able to carry on the activities of life.

Plant kingdoms have the ability to obtain their own food through the process of photosynthesis. It is the best description of the plant kingdom. They need sunlight and carbon dioxide for this activity.

Therefore, the unique feature of a typical organism in the plant kingdom is that they can synthesize their own food with the help of sunlight.

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The units of genetic distance derived from bacterial conjugation studies are called _____.
a. seconds
b. map units
c. centimorgans
d. recombination units
e. minutes

Answers

The units of genetic distance derived from bacterial conjugation studies are called minutes. Bacterial conjugation is the process by which a bacterium transfers genetic materials to another through direct contact. One bacterium serves as a donor of the genetic material and the other serves as the recipient. 

Sensory and motor functions in the mature human adult are controlled by the

Answers

Sensory and motor functions in the mature human adult are controlled by the nervous system.  

The nervous system is the system with the function to coordinate the actions of different parts of its body. It does its work by transmitting signals from the sensory organs, which detects environmental changes and connecting those signals with the effectors that respond. Nerves that transmit information from the body to the CNS are called sensory nerves while those that transmit signals from the CNS are the motor or efferent nerves.

Which nonverbal cues most likely indicate that a person is open to a conversation? check all that apply. eye contact crossed arms smiling mouth monotone voice relaxed body language?

Answers

Final answer:

Eye contact, relaxed body language, and smiling are nonverbal cues indicating openness to conversation. Crossed arms and monotone voice may suggest the opposite. Nonverbal communication is a significant part of conveying messages effectively.

Explanation:

Nonverbal cues that most likely indicate a person is open to a conversation include making eye contact, having a relaxed body language, and smiling. Direct eye contact signifies engagement and attentiveness, while a relaxed posture suggests comfortability and openness. Smiling conveys friendliness and warmth, encouraging interaction. Conversely, crossed arms might suggest defensiveness or a lack of interest, and a monotone voice could imply disengagement or indifference towards the conversation. It's essential to consider these nonverbal indicators, as research has shown that a significant percentage of communication is conveyed through them. It's also important to align body language with the spoken words to effectively communicate and ensure the message is received as intended.

Crown fires tend to be more beneficial in Ponderosa pine forests because they stay close to the ground, burn relatively cool, and clean up forest debris to give the trees a quick burst of nutrients?

Answers

Crown fires in Ponderosa pine forests can be beneficial by burning cooler and close to the ground, providing nutrients to trees. Forest regeneration through fire is essential, with specific tree species relying on fire for renewal.

Crown fires in Ponderosa pine forests tend to burn relatively cooler and stay close to the ground, which can clean up forest debris and provide a quick burst of nutrients to the trees. These fires can be beneficial in promoting ecosystem health and tree growth.

For example, jack pine trees require heat from fire for their seed cones to open, contributing to the regeneration of the forest through the burning of pine needles, enriching the soil with nitrogen.

Additionally, frequent low-severity fires can help eliminate pinyon and juniper seedlings in certain ecosystems, allowing for the regeneration of shrub-dominated plant communities.

True or false: a proper reptile habitat should include a "hot rock."

Answers

Your answer is false

Even when the supply of inorganic nutrients to the surface is high, due to for example upwelling, the absolute concentration of nutrients in the surface may still be low.

Answers

The above statement is false. Compared to deep ocean water, water in the surface has the lesser supply of rich inorganic nutrients. But due to upwelling, the absolute concentration of nutrients in the surface will be higher.

Upwelling brings those lost/sunk nutrients, plankton and carcasses to the surface. The surface then becomes feeding grounds for fish and other ocean life.    

If a response increases a disturbance, the system is classified as a ________ feedback system.

Answers

If a response increases a disturbance, the system is classified as a positive feedback system, while if a response decreases a disturbance, the control system is classified as a negative feedback system. Positive feedback exaggerates the effects of variations from normal. An example of positive feedback would be when the body temperature decreases, a center in the brain initiates physiological changes to increase the body temperature. 

If a response increases a disturbance, the system is classified as a positive feedback system.

What is Positive feedback system?

Positive feedback is defined as the process that occurs in a feedback loop that amplifies the effect of a small perturbation that involves an increase in the magnitude of the perturbation to the effect of the perturbation on the system.

Positive feedback is described as increasing or increasing the change or output where the feedback effect is amplified so that it can happen very rapidly. In this form of feedback, the output of the system is amplified, while oppositely, in negative feedback, the output is reduced or inhibited.

Thus, if a response increases a disturbance, the system is classified as a positive feedback system.

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BRAINLIESTTTT ASAP!!!

1. Which statement is true about sodium chloride (NaCl)?

It is a salt because it decreases the concentration of metallic ions.
It is an acid because it is formed by the reaction of a salt and an acid.
It is a salt because it is formed by the reaction of an acid and a base.
It is an acid because it increases the concentration of nonmetallic ions.

2. Which of the following increases the concentration of OH- ions?

Acid
Base
Water
Salt

Answers

1. It is a salt because it is formed by the reaction of an acid and a base.
2.  BASE increases the concentration 

Answer:

1 it is a salt because it is formed by the reaction of an acid and a base

2 base

Explanation:

I know this

A species of finch has been studied on one of the geographically isolated Galapagos Islands for many years. Since the island is small, the lineage of every bird for several generations is known. This allows a family tree of each bird to be developed. Some family groups have survived and others have died out. The groups that survive probably have:
A) Interbred with other species
B) Inherited some advantageous variations
C) Found new places on the island to live
D) Been attacked by more predators

Answers

B) Inherited some advantageous variations
Final answer:

In a geographically isolated environment, species like the finches in the Galapagos Islands that have inherited advantageous variations are more likely to survive and reproduce over generations. These beneficial traits provide an advantage in their specific environment, leading to the survival of some family groups.

Explanation:

The survival or extinction of a species in a particular environment is largely based on the principles of natural selection. When a species of bird, such as the finch in this scenario, lives in a geographically isolated area, it is more likely to survive if it has inherited advantageous variations (option B). These variations could range from physiological traits that help them exploit certain resources more effectively to behavioral traits that increase their reproductive success.

Over the course of several generations, species that have developed these advantageous traits are more likely to survive and reproduce. This is because these traits provide an advantage in the specific environment of the Galapagos Islands allowing them to better compete for resources, avoid predators, or tolerate local environmental conditions. Over time, these traits become more common in the population leading to the survival of some family groups and the extinction of others that lack these beneficial traits.

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Which best explains why antibiotics are ineffective in treating viral infections?

Answers

Antibiotics are ineffective in treating viral infections because Antibiotics kill only living cell. Antibiotics treat bacterial infections but not viral infections. Foe example, an antibiotic is an appropriate treatment for step throat, which is caused by the bacterium Streptococcus pyogenes. However, it is not the right treatment for most sore throats, which are caused by viruses. 

In the conservation of species, protection of entire ecosystems ensures that _____. humans have no impact on the ecosystem abiotic factors are kept constant species interactions are preserved pollution is kept out

Answers

ensures that species interactions are preserved..

Answer: Species interaction are preserved

Explanation:

The conservation of species are done in order to protection the endangered species. If they will be degrading at such a continuous rate then the population of such species will extinct.

The interaction between species is preserved during the whole procedure because they need to interact among each other in order to live a healthy life.

The process of conservation is aimed at maintaining a constant number of species in the ecosystem.

Low blood pressure that occurs on standing up is known as ____.​
a. ​chronic venous insufficiency
b. ​raynaud's disease
c. ​leukopenia
d. ​orthostatic hypotension

Answers

The right option is d. ​Orthostatic hypotension

Orthostatic hypotension is a form of low blood pressure that occurs on standing up from sitting or lying down. It is caused as a result of blood loss, dehydration or aneamia. The most common symptom of orthostatic hypotension is lightheadedness or dizziness which usually last less than a few minutes.






Which type of aneurysm is detectable on palpation as a pulsating mass in an area around the umbilicus?

Answers

Answer: Abdominal Aortic Aneurysm 

An abdominal aortic aneurysm is a type of aneurysm that is detectable as a pulsating mass around the umbilicus, commonly found in individuals with certain risk factors and diagnosed through an abdominal ultrasound.

The type of aneurysm that is detectable on palpation as a pulsating mass in an area around the umbilicus is referred to as an abdominal aortic aneurysm (AAA). This condition occurs when there is a localized dilation and weakening of the abdominal aorta, which can be felt as a pulsating mass near the navel. People with risk factors such as smoking, hypertension, hypercholesterolemia, and atherosclerosis are more likely to develop aneurysms, including AAAs. Diagnosis is often made via abdominal ultrasound, and treatment may include surgical repair or medication management, depending on the size and severity of the aneurysm.

which cell organelle provides instructions to the Golke apparatus on where the substances should be delivered?

Answers

Golgi vesicles provide instructions to the Golgi apparatus on where the substances should be delivered. They are found within the Golgi apparatus.

Ores are naturally occurring materials that can be mined profitably. true or false

Answers

For the answer to the question above, I think the answer is TRUE

Ores are valuable, they are raw materials and when extracted and processed they have a valuable mineral like metal or any other precious metal like platinum and silver. The minerals will only be mined if it is profitable

the answer to your question is true

immunological memory accounts for _____.

Answers

Final answer:

Immunological memory accounts for the adaptive immune system's rapid and efficient response to previously encountered pathogens. Memory cells initiated by an initial encounter persist in the body and provide a quicker, stronger response in case of reinfection.

Explanation:

Immunological memory is a fundamental feature of the adaptive immune system that accounts for the rapid and efficient response of the immune system to pathogens that the body has previously encountered. This heightened response is what underlies the principle of vaccination. When the immune system first encounters a pathogen, it mounts a primary immune response. After clearing the infection, a small number of the activated cells (called memory cells) persist in the body. These memory cells can recognize the same pathogen if the body encounters it again, and can initiate a faster and stronger immune response (secondary immune response) compared to the primary response. This is the reason why reinfections are generally milder or even asymptomatic.

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Final answer:

Immunological memory is the capability of the adaptive immune system to mount a faster and stronger response when reintroduced to a previously encountered pathogen. This is facilitated by memory cells that remembered the specific antigens from the primary immune response. Upon re-exposure, these cells rapidly react, often nullifying the pathogen before disease symptoms manifest.

Explanation:

Immunological memory accounts for the ability of the adaptive immune system to mount a stronger and faster response upon re-exposure to a pathogen. This happens due to the development of memory cells during a primary immune response, a phenomenon managed by the adaptive immune system with minimal reliance on cues from the innate response. During this primary response, B and T cells mature into effector cells, and a subset of the naive populations differentiates into B and T memory cells with the same antigen specificities. Therefore, subsequent exposure to the same pathogen provokes a quick, powerful response by these memory cells, often overwhelming the pathogen before it can cause symptoms of disease.

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What organism that tends to be found in raw poultry, eggs, unwashed fruit, unpasteurized milk and is one of the most common causes of foodborne illness in the united states?

Answers

Answer: Salmonella

 

Salmonella, a bacterium found in foods, including raw poultry, eggs (egg shells and inside eggs) unwashed fruit, and unpasteurized milk. It is also present on seafood, .

It is one of the most common causes of foodborne illness in the united states.

Answer is Salmonella

Valves controlling the direction of blood flow are found in which blood vessels

Answers

valves are found im veins!!

What does the limbic system do? connects the brain and the spinal cord directs incoming sensory messages coordinates involuntary muscle movement registers feelings, such as fear and pleasure description?

Answers

registers feelings, such as fear and pleasure


The limbic system connects the brain and the spinal cord.

What does the limbic system do?

The limbic system is a group of interconnected brain structures that play a crucial role in various functions related to emotions, memory, motivation, and learning. It does not connect the brain and spinal cord; that function is primarily performed by the brainstem. Instead, the limbic system is involved in the following functions:

Registers feelings, such as fear and pleasure: The limbic system is responsible for processing and regulating emotions. It includes the amygdala, which is particularly associated with emotions like fear, pleasure, and aggression.

Memory and learning: The limbic system, especially the hippocampus, is involved in forming and consolidating memories. It helps in learning and spatial navigation.

Motivation and reward: The limbic system, particularly the nucleus accumbens and the ventral tegmental area, is associated with motivation and the experience of pleasure and reward. It plays a role in reinforcing behaviors that are important for survival and well-being.

Regulation of basic drives: The limbic system influences various basic drives like hunger, thirst, and sexual desire. It helps regulate homeostasis, the body's internal balance.

While the limbic system is indeed critical for emotional processing and memory, it does not directly coordinate involuntary muscle movement or direct incoming sensory messages. Those functions are primarily attributed to other parts of the brain, such as the brainstem, cerebellum, and sensory processing regions in the cerebral cortex.

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HELP FAST!!!!!!!

Give a few examples of how biotechnology has affected the following fields:
• Medicine:
• Agriculture:
• Conservation:

Answers

Biotechnology can be defined as using living organisms and to develop new products that can help human beings. Biotechnology has had an impact as follows:

Medicine: In the field of medicine, Biotech has resulted in the discovery and mass production of 'small molecule pharmaceutical drug'. Other examples include Genetic testing and genetic diagnoses of diseases.


Agriculture: Biotech has led to the development of GMC (genetically modified crops) which was able to bring about Green revolution and increase world production of food approx. 10 times.
In animals, selective breeding and mutation breeding are examples of how Biotech has helped in factory farming methods.


Conservation: Biotechnology is being used to harness the potential of creating energy from plant-based sources such as Plankton and Algae. Biotech has also led to the development of trees and plants which are more resilient to climate change and can help in transforming communities.



Which body parts regulate heart rate, brething, swallowing, sneezing, and coughing?

Answers

that is your medulla

The medulla can help with regulating heart rate, breathing, swallowing, sneezing, and coughing. it is a very important part of the body considering it takes care of all this :)

Can you use different gender urine if on period for drug test

Answers

No because that would not be your urine 

"the symbols +, -, and 0 are used to show the results of interactions between individuals and groups of individuals. the symbol + denotes a positive interaction, - denotes a negative interaction, and 0 denotes interactions in which individuals are not affected. the first symbol refers to the first organism mentioned. what interactions exist between a lion pride and african wild dogs, if the dogs are found to typically avoid areas with lions?"

Answers

The correct answer is +/-.
There are different types of interactions and relationships between the various species of an ecosystem. If both species benefit from an interaction, then we talk about a mutualistic interaction which is symbolized by +/+. There are competitive interactions where both of the species are affected negatively and are symbolized as -/-. In this example, while the lion pride is benefited by the interaction, the African wild dog is excluded from specific areas of the ecosystem and therefore the species is disadvantaged. This relationship is symbolized as +/-.

Interactions between lions and African wild dogs that avoid the lions are positive and negative interactions (+/-)

Further explanation

Because the interaction between the two animals has two different sides. From the lion's side, the interaction is a positive interaction, because there are no other animals that disturb the area. From the side of stray dogs, this interaction is a negative one, because stray dogs cannot move freely in the lion's territory.

The environment for animals is all the biotic and abiotic factors that are around it and can influence it. Animals can only live, grow and breed in an environment that provides conditions and resources and avoid harmful factors.

There are 2 categories of environmental factors for animals, namely:

Conditions are abiotic environmental factors whose conditions are different and change according to differences in place and time. Animals react to environmental conditions, which are changes in morphology, physiology, and behavior. Environmental conditions include temperature, humidity, pH, salinity, water flow, wind, pressure, organic and inorganic substances. Resources are things that are consumed by organisms, which can be distinguished from matter, energy, and space. Resources are used to indicate an abiotic or biotic factor that is needed by animals because availability in the environment decreases when it has been utilized by animals. Each animal will vary according to space (place) and time.

In the ecosystem of animals interact with the biotic environment, namely other animals, plants and other micro-organisms. Such interactions can occur between individuals, between populations, and between communities. The interaction is an ecological function of an ecosystem. Interaction between individuals can occur between individuals in a population or different populations.

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Details

Class: high school

Subject: Biology

Keywords: animals, interactions, organisms

I don’t get this can someone explain would be appreciated :)

Answers

When completing Punnett Squares, you cross the letters that meet up. For example, their are two TTs and two Tts. Dominant will always show before a recessive so if it's TT or Tt it will be the dominant version. two tt's mean that it's recessive. In a Punnett Square, one box = 25%.

Part A: The genotypic ratio is 50% TT and 50% Tt. The phenotypic ratio is 100% tall.

Part B: The two Tt's could produce a short plant because there is a 25% that the parents will both give t's.

One of the best strategies for controlling infectious disease is:

Answers

Well what kind of disease are you trying to look for

The kind of metabolism that yeast undergoes during bread making is __________ fermentation.

Answers

alcoholic fermentation

The production of insulin is a mechanism that regulates the human body's internal environment and aids in ...

A: the maintenance of homeostasis within the body system.

b: the production of carbon dioxide through cellular respiration.

c: the production of sugar molecules through photosynthesis.

d: the storage of genetic information within cells.

Answers

Answer:

The correct answer is option A: "the maintenance of homeostasis within the body system".

Explanation:

The pancreas secretes insulin and glucagon, hormones that work together for the maintenance of homeostasis within the body system. When the blood sugar level is low, the pancreas secretes glucagon to raise them. When the blood sugar level is high, the pancreas secretes insulin to lower them.

Answer:

d: the storage of genetic information within cells.

Explanation:

I just answered it right

The oak tree fungal pathogen, phytophthora ramorum, has migrated eight hundred kilometers in fifteen years. west nile virus spread from new york state to forty-six other states in five years. the difference in the rate of spread is probably related to

Answers

I believe the difference in the rate of spread is probably related to the mobility of their hosts. Natural populations of hosts and parasites are often subdivided and patchily distributed such that some regions of a host species' range will be free from a given parasite. The mobility of the hosts greatly influences the distribution of a given parasite. 

A weathering process that involves the buildup of salts on rock surfaces through evaporation where these salts weaken the cements that bond the rocks so that they break is ?

Answers

Salt-crystal growth is a weathering process that involves the buildup of salts on rock surfaces through evaporation where these salts weaken the cements that bond the rocks so that they break. In this process of weathering, there is salt crystallization which leads to gradual breaking of rocks.






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in the box below, enter the value that missing from the table. . Many cities have combined sewers. In good weather, these systems funnel sewage to treatment plants. During rainstorms street runoff is combined with sewage. Combined sewers in cities can be problematic because _____. the sewers cannot handle the volume of waste from street runoff and sewage sewers are often blocked by trash that people have thrown into them street runoff cannot flow into the sewers and be safely taken to treatment plants street runoff often causes the sewers to deteriorate f(x) = cos(x)f'(x) = -sin(x)f'(/2) = -sin(/2)f'(/2) = -1My answer to this question is A. -1, but I am posting it here because several students got B. +1 as their answer. Can anyone confirm the answer as A? challenges to growing civil society and democratic practices in the Middle East Throughout the text, Santiago learns that all things are connected. Which scenes from the text present evidence to support this statement? Select each correct answer. A-Santiago arrives in Africa, is robbed, and is faced with the decision to continue moving onward or return to Spain. B- The crystal merchant explains how life will change if he begins to sell tea in crystal glasses. C- Santiago meets Fatima, looks in her eyes, and knows she is the omen he has been waiting for. D- Santiago speaks with the elements in order to transform himself into the wind. In a recent experiment, anti-bacterial hand sanitizer was compared to hand soap. Students washed their hands using the sanitizer or soap and warm water for two minutes; then they dried their hands with a paper towel. The standard of comparison was rubbing hands vigorously for 2 minutes in warm water, without any soap or sanitizer, and then drying with a paper towel. The sanitizer advertisement claimed to kill bacteria more effectively than any soap. After washing, hands were swabbed and then the swab applied to a culture plate and incubated. Finally, the bacterial cultures were counted and recorded in the data table. Students concluded that the hand sanitizer was most effective in killing bacteria.How would you respond to the students' conclusion?A) The conclusion is valid; the sanitizer plates had higher numbers. B) The conclusion is not valid; there were fewer bacteria cultures on the soap plates. C) The conclusion is not valid because the warm water was as effective as the sanitizer. D) The conclusion is valid because the sanitizer had a better kill rate than the soaps. Examine all of the different kinds of information that Lewis and Clark brought back with them. Explain how this information created an important body of knowledge for its time, and what it means to us now. Who said, "the intensity and chronicity of human stress is governed largely by perceived control over the demands of one's life"? Blake uses repetition to create mood in "The Lamb." What words are repeated? What tone do these words create? Advances in technology allow food products to be safely and quickly transported all over the world. true or false What type(s) of endocrine cells are glandular and produce pth? Flee, Fin, and Fliffers are 3 rabbits for sale in a pet store. Combined they represent 30% of the total number of rabbits for sale. What is the total number of rabbits for sale? During the 11 months of the airlift, over ____ million tons of supplies were flown into west berlin. How can medical assistant use the knowledge of the nervous systems to care for the patient with Parkinsons and other neurological disorders A cell phone company orders 500 new phones from a manufacturer. If the probability of a phone being defective is 2.9%, predict how many of the phones are likely to be defective. Round to the nearest whole number. 12 phones 15 phones 18 phones 145 phones Consider the equation x^2 + 12x + c = 0. If c = -28, list the steps to solve the equation by completing the square, and give the solution or solutions. plz help (4+3.2)[(92)+2.5] x\sqrt[4]{x} Rewrite simplest radical form what is the distance between points (10, 3)nd (-2, 4) Which of the following shows that polynomials are closed under subtraction when polynomial 5x 6 is subtracted from 3x2 6x + 2? 3x2 11x + 8 may or may not be a polynomial 3x2 11x + 8 will be a polynomial 3x2 x + 4 may or may not be a polynomial 3x2 x + 4 will be a polynomialTip: Every 2 after 3x is an exponent.. so it would be 3x^2