define a reflex action​

Answers

Answer 1

Answer:

A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. A reflex is made possible by neural pathways called reflex arcs which can act on an impulse before that impulse reaches the brain

Explanation:

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Related Questions

Plant height, leaf shape, and flower color are all examples of what in plants

Answers

Answer:

inherited traits

Explanation:

in physiological Genotype and phenotype disorder male and female in reproductive system

Answers

Both males and females can experience reproductive system disorders. These disorders can be caused by genetic factors, hormonal imbalances, structural issues, infections, or other medical conditions. In males, these disorders may include erectile dysfunction, infertility, testicular disorders, prostate problems, and hormonal imbalances. In females, they may include menstrual disorders, polycystic ovary syndrome, endometriosis, uterine fibroids, ovarian cysts, infertility, and hormonal imbalances. Treatment options vary depending on the specific disorder and may involve medication, hormonal therapy, surgery, or assisted reproductive technologies.

Do eukariota cells have mitochondria?

Answers

Do Eukaryotic Cells have Mitochondria?

The answer is YES

In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus, and lysosomes.

What is a  Eukaryotic cell?

A eukaryotic cell is one of two different types of cells. Organisms that are based on the eukaryotic cell are called “eukaryotes” and include plants, animals, fungi, and protists.

What is Mitochondria?

The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. It is the power house of the cell; it is responsible for cellular respiration and production of (most) ATP in the cell. Each cell can have from one to thousands of mitochondria. Mitochondria also contain extranuclear DNA that encodes a number of rRNAs, tRNAs, and proteins.

Deer mice are usually dark brown and live in forests with dark soil. However, the deer mice in the Sand Hills of Nebraska are lighter brown and live in an area with light, sandy soil.

Based on this information, what ,begin emphasis,most,end emphasis, likely caused the change in the Sand Hills deer mice?
Answer options with 4 options
A.
Lighter colored mice were preferred by females.
B.
Lighter colored mice came from snowy habitats in the north.
C.
Lighter colored mice had more dominant genes in their new habitat.
D.
Lighter colored mice were more likely to avoid predators and to reproduce.

Answers

Lighter colored mice were more likely to avoid predators and to reproduce. Therefore, option (D) is correct.

The lighter brown coloration of the deer mice in the Sand Hills of Nebraska is likely an adaptation that provides them with a survival advantage in their specific habitat. The light, sandy soil in the area may offer better camouflage for lighter colored mice, making them less visible to predators and increasing their chances of survival.

As a result, these mice would have a higher likelihood of successfully reproducing and passing on their lighter coloration traits to future generations.

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"Bb" is an example of a ________ genotype

Question 9 options:

Homozygous


Heterozygous

Answers

Answer: Heterozygous

Explanation:

Homozygous refers to having identical alleles.                                                 Example: BB or bb

Heterozyguos refers to having inherited different alleles.                      
Example: bB or Bb

Enations are small, flattened green protuberances found on the stems of
A. club mosses.
B. horsetails.
C. quillworts.
D. true mosses.
E. whisk ferns.

Answers

Enations are small flattened green protuberances found on the stems of whisk ferns. Option E.

Wisk ferns have water and nutrient-carrying tissue but no true leaves or roots. Small yellow sporangia can be seen on the branches. Snowden has no strobila. These primitive plants are closely related to ferns. Horsetails whisk ferns and ferns belong to the phylum Monilophyta while horsetails are classified in the equinox.

The only extant genus Equisetum is a survivor of a large group of plants that produced large trees shrubs and vines in Carboniferous swamp forests. Seedless vascular plants belong to tubular plants. They have vascular tissue such as the xylem and phloem but do not produce reproductive seeds or flowers. Examples of seedless vascular plants are ferns clubmoss whisk ferns and horsetail.

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know as the coldest biomes? ​

Answers

Answer:

The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert.

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Name four activities carried out in agriculture as an art​

Answers

Answer:

planting

measuring

weeding

harvesting

Explanation:

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list the correct names next to each number in the hydrologic water cycle. use the textbook or writing tool

list the correct names next to each number in the hydrologic water cycle. use the textbook or writing

Answers

The correct names next to each number in the hydrologic or water cycle is as follows;

1. Evaporation/Transpiration

2. Condensation

3. Precipitation

4. Surface runoff

What is water cycle?

The hydrologic or water cycle involves the continuous circulation of water in the Earth-Atmosphere system.

Water is necessary to sustaining life on Earth, and helps tie together the Earth's lands, oceans, and atmosphere into an integrated system.

Precipitation, evaporation, freezing, melting and condensation are all part of the hydrological cycle. The correct names of the labelled parts in the diagram are as given above.

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3. Which of the following apply to skeletal muscle? (Choose all that apply) 1: striated 2: involuntary 3 : voluntary 4 : used for movement​

Answers

Answer:

striated

voluntary

used for movement

Explanation:

Skeletal muscle is:

→ striated - they are marked with long, thin parallel streaks

involuntary - they aren't done without will or conscious control.

→ voluntary - they are done out of one's own free will.

→ used for movement​ - they allow you to perform a wide range of movement

Discuss
Cell respiration

Answers

Answer:

Plants get energy from this process.

Explanation:

Formula:

Glucose+carbon dioxide ➡️ Oxygen+ATP

explain why a plant need nitrogen, phosphorus, magnissium, potassium

Answers

Nitrogen is used by plants for lots of leaf growth and good green color. Phosphorous is used by plants to help form new roots, make seeds, fruit and flowers. It's also used by plants to help fight disease. Potassium helps plants make strong stems and keep growing fast.

b. Electromagnetic Force
c. Weak Force
d. Gluon
e. Strong Force
1. The force that pulls or attracts any two objects in direct relation to their masses and inversely relate
the distance separating them.
2. The force that acts between charged particles.
3. The force that holds the nucleus together.
4. The force that causes radioactive decay.
5. The carrier particle involved in the Strong Force.

b. Electromagnetic Forcec. Weak Forced. Gluone. Strong Force1. The force that pulls or attracts any two

Answers

Answer:

I think the answer is #5. A strong force involves wind, ocean waves, inclement weather..

like hurricanes, tsunamis, and hurricanes...

why protozans are called ammonotelic​

Answers

Answer:the process of excreting nitrogenous waste in the form of ammonia

Explanation:

Computer modeling gives scientists the ability to study the interaction of complicated systems wi Th our actually conducting an experiment.


True or false?


Will reward! Please help

Answers

This question has some incorrect words; here is the complete and correct statement:

Computer modeling gives us the ability to study the interaction of complicated systems without actually conducting an experiment.

True or False

The correct answer is True

Explanation:

Models reproduce a phenomenon or complex system. For example, a model of an ecosystem is a small-scale representation of the ecosystem and due to this, it should include organisms found in the real ecosystem and other conditions such as humidity, temperature, among others. Moreover, models are used as part of science to better understand or observe phenomena.

In the case of computer models, these are programs specially created to show how a system or phenomenon works. Additionally, these differ from regular models because scientists do not need to conduct an experiment in reality but only create precise programs. According to this, the statement is true.

Can anyone give me a 4-5 well written definition of centriole.

Answers

1. A minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
2. Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope.
3. Centrioles play a role in organizing microtubules that serve as the cell’s skeletal system.
4. They help determine the locations of the nucleus and other organelles within the cell.

Why do male mammals risk having the testicals outside the main body?

Answers

Answer is to keep the testicles cooler than the body

Reason - the temperature of the testicles needs to be cooler than the inside of the body to produce sperm. This is why the testicles are located outside of the body.

Many cells associated with a variety of cancers have mutations in the p53 gene. Why are mutated tumor suppressor genes, like p53, considered recessive mutations

Answers

Answer:

it is a recessive mutation because one functional copy of the p53 gene is sufficient to maintain the normal phenotype (i.e., one functional copy of the p53 gene can protect from cancer)

Explanation:

The p53 gene encodes a protein that plays a critical role in controlling the cell cycle. It is for that reason that the p53 gene is referred to as a "tumor suppressor" gene which acts to suppress tumor cells. Moreover, it is well known that when individuals inherit only one functional copy of this gene (instead of two normal alleles), they are normal but also prone to develop different types of cancers during early adulthood. The Li-Fraumeni syndrome is a genetic (inherited) predisposition to cancer due to the inheritance of a mutated p53 gene copy.


Create a public service announcement that you could use to promote your suggested actions with the other people in your home.
1. promote how to conserve energy
2. include data and evidence from your investigation and the research you conducted during the capstone to justify the value of people
implementing your suggested action.
3. consider your targeted audience and what they would/could do
4. put in facts that would grab attention
5. create the public service announcement based on up-to-date accurate research, findings and/or data

Answers

In this public service announcement, we promote the importance of conserving energy to create a sustainable future. Based on up-to-date research and data, we provide practical tips to save energy, highlight the environmental impact, and emphasize the importance of taking action for the well-being of future generations.

[Public Service Announcement]

[Background music fades in]

Narrator: Attention, everyone! Are you ready to make a positive impact on our planet? We have an urgent message for you, based on up-to-date research and data. Together, we can conserve energy and create a brighter, sustainable future for our homes and the environment.

[Upbeat music begins]

Narrator: Did you know that simple actions at home can make a significant difference? Let's start with conserving energy. By making a few changes to our daily routines, we can reduce our carbon footprint and save money on our energy bills.

[Sound of light switch turning off]

Narrator: Turn off lights and unplug devices when not in use. Did you know that even in standby mode, electronics consume energy? By flipping that switch, you'll conserve energy and contribute to a healthier planet.

[Sound of faucet turning off]

Narrator: Be mindful of water consumption too! Fix those dripping faucets and take shorter showers. Conserving water not only helps the environment but also ensures water availability for future generations.

[Transition to a more serious tone]

Narrator: Now, you might wonder, why is this important? Well, here's the data: According to recent studies, implementing energy-saving measures can reduce greenhouse gas emissions by up to 20%, slowing down the effects of climate change.

[Sound of wind and waves]

Narrator: By conserving energy, we protect our oceans, forests, and wildlife. It's a small step towards preserving the natural beauty we all cherish.

[Sound of children playing]

Narrator: We must remember that our actions today shape the world our children will inherit. Let's set an example for them by adopting sustainable habits.

[Upbeat music returns]

Narrator: So, whether you're a parent, a student, or a homeowner, you have the power to make a difference. Start conserving energy and inspire others to join the movement.

[Sound of applause]

Narrator: Together, we can create a cleaner, greener future. Visit our website for more tips and resources on energy conservation. Let's be the change our planet needs!

[Background music fades out]

[Closing jingle]

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Which of the following describes the order of events in which bone fractures heal?
A. A hematoma form -- a fibrocartilage Callus forms -- a bony calus forms -- bone remodeling occurs.
B. A bony callus forms a -- hematoma form -- a fibrocartilage calls forms -- bone remodeling occurs.
C. A hematoma forms a bony callus forms -- afbrocartilage calls forms -- bone remodeling occurs.
D. A fibrocartilage Callus forms -- a hematoma forms -- bone remodeling occurs -- a bony calls forms.

Answers

The order of events in which bone fractures heal is as follow A hematoma form -- a fibrocartilage Callus forms -- a bony callus forms -- bone remodeling occurs.

What is bone healing process?

The bone healing process has 03 stages:

Inflammation, Bone formation and Bone remodeling.

Inflammation starts instantly after fractured and lasts for few days.

Thus, option "A" is correct.

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The cells of your body need energy to carry out life functions. Which of the following body responses is a sign that your cells need more energy? (Answer choices in the photo.)

The cells of your body need energy to carry out life functions. Which of the following body responses

Answers

The correct option is b. you feel hungry. This sensation sets your focus in obtaining more nutrients, which are needed to continue with body proper functioning.

Review Map D. Predict future weather for New Orleans, LA. What weather might occur there? What is the cause of this weather? Predict the future weather for Washington, DC. What is the cause of this weather?

Review Map D. Predict future weather for New Orleans, LA. What weather might occur there? What is the

Answers

Answer:

1. Many fronts cause weather events such as rain, thunderstorms, gusty winds, and tornadoes. At a cold front, there may be dramatic thunderstorms. At a warm front, there may be low stratus clouds. Usually, the skies clear once the front has passed.

2. As the warm moist air rises, towering clouds often form releasing energy in the form of brief, intense rain storms with high winds and lightning. On the other hand, warm fronts will ride up and over cold air near the surface. As it rises, the air cools and the humidity condenses to form clouds and precipitation.

Explanation:

Which of the following occur in a maple tree growing in a temperate climate in response to increasing cold weather? Choose three correct answers.



Answers

The three correct answers are:

B. The chlorophyll in the leaves break down, revealing yellow and red pigments that had been masked by the green pigments. This process leads to the beautiful fall foliage colors observed in maple trees. As the weather gets colder, the breakdown of chlorophyll exposes the underlying pigments, creating vibrant red, orange, and yellow leaves.

C. Xylem and phloem fill with ions and organic substances that prevent freezing. In response to increasing cold weather, the tree transports ions and organic compounds into the xylem and phloem. These substances act as antifreeze agents, preventing the freezing of sap and ensuring the circulation of nutrients and water within the tree.

D. Meristems form thick scales to protect next year's buds from cold winter temperatures. The meristems, which are the regions of the tree where new growth occurs, undergo changes in response to the approaching cold weather. They form protective scales around next year's buds to shield them from the harsh winter conditions, ensuring their survival and future growth.

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Your question is incomplete, but most probably your full question was:

Which of the following occur in a maple tree growing in a temperate climate in response to increasing cold weather? Choose three correct

answers.

A. Auxin production stimulate one final growth spurt before winter arrives,

B. The chlorophyll in the leaves break down, revealing yellow and red pigments that had been masked by the green pigments.

C. Xylem and phloem fill with ions and organic substances that prevent freezing.

D. Meristems form thick scales to protect next year's buds from cold winter temperatures,

Why human don't lay from the egg?​

Answers

Answer: because that is not how were made.

Explanation:

What materials can someone use to BEST erase part of a document?

Answers

A person can use an eraser, whiteout, or a computer program to erase parts of a document.

What is Computer?

Computer is an advanced electronic device that takes data as input, processes it according to a set of instructions and produces the desired output. It is used to perform various tasks such as calculations, data processing, and automated reasoning. Computers have become an integral part of our daily life and have helped us in many ways. They have enabled us to store and access data quickly, communicate with people around the world, and make calculations faster and more accurate. Computers are also used for entertainment such as gaming, videos and music. In addition, computers are used in many industries such as medical, business, engineering, and security.

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Explain where the carbon stored in fossil fuels comes from.

Answers

Answer: Rocks like limestone and fossil fuels like coal and oil are storage reservoirs that contain carbon from plants and animals that lived millions of years ago. When these organisms died, slow geologic processes trapped their carbon and transformed it into these natural resources.

Explanation:

Please help !!!!!!!!!!!

Please help !!!!!!!!!!!

Answers

Answer:

1) Weathering, Erosion, Disposition

2) Physical weathering is the breakdown of large rocks into fragments by physical forces; the chemical composition of the rock is not changed. Chemical weathering is the breakdown of rock by chemical reactions; the chemical composition is changed.

3) The four forces of erosion are water, wind, gravity, and glaciers.

4) Because the velocity of the river slows down a great deal when it reaches the large body of water, the sediment that the river was carrying is deposited along the mouth of the large body of water.

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Abrasion: Abrasion is the breaking down and wearing away of rock material by the mechanical action of another rock. Three agents of physical weathering that cause abrasion are moving water, wind, and gravity. Also, rocks suspended in thence of a glacier can cause abrasion of other rocks on Earth's surface. This would be a prime example of physical weathering, or mechanical weathering.

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Acid Precipitation: Acid rain causes less erosion than normal rainwater does. Rainwater can break down rocks by dissolving minerals in the rocks. Acid rain is rainwater that is more acidic than normal rainwater. Acid rain can also dissolve the minerals in rocks faster than normal rainwater can. This is chemical weathering.

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Animal actions: Animal and plant mobility is a factor in biological weathering. For instance, a plant may grow in a gap in a rock and, as its roots spread, cause the fracture to expand. A rabbit may also burrow into a crack in a rock, making it wider and eventually separating the rock. This is an example of physical weathering.

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Ice wedging: Ice wedging ,sometimes known as frost wedging ,can also cause rocks to break apart. Ice wedging causes cracks in rocks to expand as water seeps in and the water freezes and expands opening the crack further. Rocks formed under pressure deep within earth can become exposed at the surface. This is physical weathering

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Oxidation: Oxidation is another kind of chemical weathering. It occurs when oxygen from air dissolves in water and combines with chemicals in the rocks to form oxides. if the rock contains a lot of iron, then oxidation produces a brown material called iron oxide. This looks like rust on the rock.

What is the difference between weathering erosion and deposition?

Weathering is the chemical and mechanical breakdown of exposed rock. The chemical changes alter the minerals and make them softer, and mechanical weathering physically breaks rock into smaller and smaller pieces.

Erosion is the REMOVAL of those chemically and mechanically softer and broken pieces of rock from their original locations, by gravity, water, ice or wind. Erosion is transport (and as a result, fresh unaltered rock is exposed to wind, water and weather, and THAT becomes weathered in turn). The material being transported is ‘sediment’: sand, silt, mud and gravel.

Deposition is when the weathered and eroded (transported) material is dropped and settles down elsewhere, forming a ‘deposit’ of transported rock material.

If this deposit remains undisturbed long enough, and is buried by enough arriving material, it will eventually go through compaction and chemical reactions forming cement between the grains - thus resulting in a brand new, sedimentary rock.

Weathering, erosion, transport, deposition, compaction and cementation are part of the ‘rock cycle’.

How can the complete rock cycle be described?

Let’s start with basalt that form at mid ocean spreading centers. At mid ocean spreading centers rock material from the earth’s mantle continuously melts due to continuous decreasing in pressure from the oceanic crust spreading at this point. The molten rock quickly cools at the earth’s surface and forms rock known as basalt that makes up the oceanic crust all over the world. The newly produced oceanic crust rock slowly moves towards a boundary with a continental crust where the oceanic crust subducts beneath the continental crust due to the oceanic crust having a higher density than the continental crust. This is where things get a bit more interesting.

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You are observing Oscillatoria under the 4X objective, and you want to increase magnification. When
you switch to the 10X objective, you cannot see the organism. What has appended and what should
you do?

Answers

A magnification of 4X objective is fairly modest. You should be able to hide a good chunk of the slide. With a 10x magnification, however, we can no longer see the oscillatory clearly because of the narrow depth of field. The oscillatory may now be visualized by gradually bringing the slide into focus using fine-tuning.

This is further explained below.

What is magnification?

Generally, The practice of increasing something's perceived size, as opposed to its actual size, is referred to as magnification.

In conclusion, The magnification is quite modest when using a 4X objective. You have the capability of covering the majority of the slide. If we convert to 10x,

the magnification will rise; nevertheless, it will only concentrate across a tiny area, which will cause oscillatory to become blurry. Now, using fine-tuning in a methodical and careful manner, bring the slide into focus so that you can see the oscillatory.

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You find a bone in a rock you think it's about 700,000 years old . Would you use radiocarbon dating to find the age of the bone?​

Answers

Answer:

Explanation:

yaea

Why do you need control samples with the known normal, carrier, and sickle cell
alleles to complete the analysis?

Answers

Answer:

Explanation: All experiments must have an controlled group to show the differences

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