which of the following best describes the dendrites and axons of a neuron? multiple choice question. neurons have axons and dendrites, both of which extend from the membrane forming elaborate tree-like structures. neurons often have single axons and numerous branching extensions called the dendrites. neurons have a single axon and a single dendrite that may have a few branches. neurons often have single dendrites and numerous branching extensions called the axons.
Answers
the following sentences best describes how dendrites and axon terminals are similar Dendrites and axon terminals both deal with neurotransmitters.
What is axon function?axon, also called nerve fibre, portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells. Some axons may be quite long, reaching, for example, from the spinal cord down to a toe.
Why is it called axon?It comes from the Greek áxōn, meaning “axle or axis.” In a manner of speaking, the axon acts as the main road leading out of the “city” of the cell body. Impulses can travel through the axon very quickly and range in speeds from 1 to 100 meters per second.
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Related Questions
(05. 01 MC)
Recent molecular evidence suggests that the ancestors of the Aboriginal Australians may have arrived on that continent much earlier than originally thought, suggesting that there may have been two waves of human migration out of Africa instead of only one. What is the best next step for scientists considering this alternative explanation? (2 points)
Answer Choices:
Look for fossil evidence that might support this explanation. Determine the amount of popular support for the theory. Convince the scientific community the new explanation is true. Assume the molecular evidence is wrong since it does not fit with what is known
Answers
Given the statement, "Recent molecular evidence suggests that the ancestors of the Aboriginal Australians may have arrived on that continent much earlier than originally thought, suggesting that there may have been two waves of human migration out of Africa instead of only one," the best next step for scientists considering this alternative explanation would be to look for fossil evidence that might support this explanation.
An explanation for the same is given below: As per the given statement, the ancestors of the Aboriginal Australians may have arrived on that continent much earlier than originally thought, suggesting that there may have been two waves of human migration out of Africa instead of only one.
Since this is an alternative explanation for what is already known, the best next step for scientists is to look for fossil evidence that might support this explanation. They need to find and analyze fossils of those early humans, which would provide evidence for this alternative theory.
In addition, it would also be essential to test the molecular evidence further and conduct more research to find any possible inconsistencies. This could provide scientists with a more in-depth understanding of how early humans migrated from Africa to different parts of the world. Thus, the best option would be to look for fossil evidence that might support this explanation.
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what do you think is most important – the number of bacteria that grew on the plates or the number of different types of bacteria that grew on the plates?
Answers
The number of different types of bacteria that grew on the plates is more important than the total number of bacteria.
While the total number of bacteria can provide information about the overall bacterial load or density, the number of different types of bacteria is crucial for understanding the diversity and composition of the bacterial community.
Different types of bacterial diversities are:
Microbial Diversity: Different types of bacteria play diverse roles in ecosystems and can have varying impacts on human health, environmental processes, and interactions with other organisms. Assessing the diversity of bacteria helps in understanding the complexity of microbial communities and their functional capabilities.
Health Considerations: In certain situations, the presence of specific bacteria or the absence of certain beneficial bacteria can be more significant for health assessments than the total bacterial count. Some bacteria may be pathogenic, while others could have potential health benefits or contribute to maintaining a balanced microbiota.
Ecosystem Stability: Bacterial diversity is crucial for ecosystem stability and resilience. A diverse bacterial community is more likely to withstand environmental changes, nutrient availability, and other disturbances. Monitoring changes in the types of bacteria present provides insights into ecosystem health and functioning.
Diagnostic and Research Applications: Differentiating between bacterial species allows for more accurate identification, tracking of specific strains or pathogens, and enables targeted research investigations focused on specific microbial groups.
Therefore, while the total number of bacteria can provide some information, understanding the number and types of different bacteria present is more important for assessing microbial diversity, ecosystem functioning, human health considerations, and conducting targeted research.
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what type of plant tissue transports nutrients and fluids?
Answers
Xylem tissue transports nutrients and fluids from roots to the leaves in the plants.
In vascular plants, the vascular system is made up of supporting fibres, conducting tissues, and other tissues that move fluids and nutrients throughout the plant's body. The two main vascular tissues are phloem, which carries food from the leaves to all parts of the plant, and xylem, which carries water and dissolved minerals from the roots to the leaves.
The majority of plants that are still alive today on Earth have vascular systems, including gymnosperms, angiosperms, and lower vascular plants like ferns and lycophytes. Vascular bundles come in a variety of shapes and sizes. Phloem only resides on one side of the xylem in the collateral pattern, often facing the stem exterior. The vast majority of flowering plants, known as dicots, including roses, apples, and oaks, often have this arrangement.
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What is a difference between physical traits and personality traits?
Answers
What is the definition of Systentatic search ?
Answers
Systematic search refers to a methodical and organized approach to conducting research or gathering information in order to locate relevant and reliable sources.
It involves employing specific strategies and techniques to systematically explore various sources, such as databases, libraries, online resources, and academic journals, to gather information on a particular topic or research question.
In a systematic search, researchers follow predefined search criteria and methodologies to ensure that their search is comprehensive and unbiased.
This typically involves formulating specific research questions, identifying appropriate keywords and search terms, setting inclusion and exclusion criteria, and using advanced search techniques like Boolean operators and filters.
By employing a systematic approach, researchers aim to minimize the risk of missing relevant information and maximize the quality and reliability of the sources they retrieve.
Overall, a systematic search is a rigorous and structured process that helps researchers locate the most relevant and reliable information available, thereby supporting evidence-based decision-making and ensuring the integrity and validity of research findings
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List most dangerous greenhouse gasses in order
Answers
Answer:
Water vapor,Carbon dioxide,Methane,Surface level ozone Nitrous oxides and fluorinated gases
why are the cool and fern rooms on the east side of the greenhouse?
Answers
Answer:
The positioning of the cool and fern rooms on the east side of the greenhouse can be attributed to several factors, including the requirements of the plants and the availability of sunlight.
Explanation:
Sunlight: Placing the cool and fern rooms on the east side allows them to receive optimal morning sunlight. As the sun rises in the east, these rooms can capture the early morning light, which is generally gentler and less intense compared to the harsh afternoon sun. This arrangement provides a favorable light intensity and duration for the plants' growth and photosynthesis.
Temperature: The east side of a greenhouse tends to experience lower temperatures compared to the west side during the afternoon. By locating the cool room on the east side, the plants inside can benefit from the relatively cooler temperatures, which may be crucial for certain plant species that thrive in cooler environments.
Shade: Placing the fern room on the east side allows it to receive some shade from the taller structures or trees that might be present on the west side of the greenhouse. Ferns generally prefer indirect or filtered light rather than direct sunlight. The shading effect helps create a more suitable environment for ferns by reducing the intensity of sunlight and preventing potential leaf burn or dehydration.
Microclimate control: Separating the cool and fern rooms from other areas of the greenhouse, such as the warm or sun-loving plants, allows for better control of the microclimates within the different sections. The cool room may require specific temperature and humidity settings to mimic cooler climates, and keeping it separate helps maintain the desired conditions without affecting the rest of the greenhouse.
Overall, the placement of the cool and fern rooms on the east side of the greenhouse takes into account factors such as sunlight exposure, temperature preferences, shading requirements, and the need for microclimate control to create suitable environments for the plants in those rooms.
what is the meaning of ph
Answers
Answer:
pH is a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
What is the chemical nature of neurotransmitters, and how can drugs
alter their function?
Answers
Neurotransmitters are the substances which act as signaling molecules in the body. Many drugs mimic these neurotransmitters by activating different cells in the body.
What are neurotransmitters?
A neurotransmitter is a signaling molecule which is secreted by a neuron to affect another cell or neuron across a synapse. The cell receiving this signal, any main body part, or the target cell, may be another neuron, however they could also be a gland or muscle cell.
Drugs interfere with the way neurons send, receive, and process signals via neurotransmitters in the nervous system. Some drugs, such as marijuana and heroin, can activate neurons in the body because their chemical structure mimics that of a natural neurotransmitter present in the body. This allows the drugs to attach onto and activate the neurons.
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Define the verb "adapt". Does survival in a particular environment through coping is synonymous with evolution? Why or why not?
Answers
Answer:
The word adapt means to get adjusted to a change.
yes, survival in a certain environment is similar to evolution. Both must use adaptation in order for life to keep living through changes in the environment. Each help life sustain itself in a very unique way.
Explanation:
The word adapt means to get adjusted to a change.
Yes, survival in a certain environment is similar to evolution. Both must use adaptation in order for life to keep living through changes in the environment. Each help life sustain itself in a very unique way. In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment. Adaptation is the process of adjusting something to better match it's environment or situation. Evolution is a broad term that refers to any change in anything over time.Learn more:
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Which of the following statements is true about viruses?
Viruses contain very small cells
Viruses never eat any food
Viruses can reproduce themselves quickly
Viruses have hyphae that help them take up water
Answers
Explanation:
viruses may contain very small cells viruses can produce them quickly when they get a mode of transmission viruses have hyphae BUT viruses never eat any food so second statement is true....
What type of temperatures will the enzyme shown in Graph (a) work best?
Answers
50POINTS!!!!!!!!!!!!!!!!!!!!!!!1
Describe how energy and matter move through the environment under both aerobic
and anaerobic conditions. Must be at least two paragraphs
Answers
Answer:
Energy drives the cycling of matter within and between systems. Energy drives the cycling of matter within and between systems in aerobic and anaerobic conditions. Photosynthesis and cellular respiration (including anaerobic processes) provide most of the energy for life processes.
Explanation:
1-Genes turn on or off to regulate the activity of : differentiation . RNA . mutation multifactorial disorders 2-Which public health issue is NOT listed as a priority in the Healthy People initiative ? oral health tobacco health on school campuses injury and violence 3-A sleep latency test measures how long takes you to fall asleep . records information such as the times you go to bed and awaken, and what you consume in the evening is repeated five times during the day in a sleep clinic . involves monitoring your sleeping habits at home 4-A person suffering from depression commonly experience A lack of guilt Fatigue Improved concentration An unusual passion for hobbies 5-Zaodesa year-old malt, a cardiovascular training programTo benetles from exercise, now he need to increases intensity workout? Once a week Once a month Once every two weeks Once every three weeks
Answers
Health on school campuses (c) is a public health issue that is NOT listed as a priority in the Healthy People initiative.
A sleep latency test is (c) repeated five times during the day in a sleep clinic. Every two hours during typical wake periods, a person is offered 4-5 opportunities to sleep as part of the multiple sleep latency test (MSLT). The test is used by the expert to gauge the degree of daytime drowsiness (also known as sleep latency) and the rate at which REM sleep starts in the patient.
A person suffering from depression commonly experiences (b) fatigue and (d) an unusual passion for hobbies. Depression is a mood illness that results in a constant sense of melancholy and boredom. It affects how you feel, think, and behave and can cause a number of mental and physical issues. You can struggle with doing routine daily tasks, and you might occasionally think life isn't worth living.
Zaodesa needs to increase his high intensity workouts to (a) once a week. Advantages of consistent exercise for cardiovascular risk factors are:
an improvement in exercise tolerancea decrease in body weightdecreased blood pressureLDL and total cholesterol levels are reducedaugmentation of HDL, the good cholesterolhigher insulin sensitivityLearn more about the Healthy People Initiative here:
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what is a primitive characteristic of ardipithecus ramidus
Answers
Like most primitive humans, unlike all known hominins, Ardipithecus ramidus had a prehensile thumb adapted for locomotion in trees.
What are the characteristics of Ardipithecus ramidus?The species was facultatively bipedal, standing upright on the ground but able to move on all four limbs of the tree. Anatomical features are very primitive. The upper canine teeth are more diamond-shaped than the pointed shape found in African monkeys, a derived trait common to Australopithecus afarensis.
Why is Ardipithecus a unique discovery?Postcranial fossils of Ardipithecus were consistent with a forest lifestyle. Among all humans, Ardipithecus was the only animal that could grasp as effectively with its big toes as other primates.
What is the importance of Ardipithecus ramidus?Ramidus is the oldest species with features clearly related to the hominin lineage. Soar Ramidus is the best evidence of the roots of the human family tree.
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17
Quotations
Dark They Were
Can you discuss the following quotations from the story?
1. "The wind blew, whining. At any moment the Martian air might draw his
soul from him, as marrow comes from a white bone."
Answers
This quotation from the story "Dark They Were, and Golden-Eyed" by Ray Bradbury highlights the unease and fear that the main character, Harry Bittering, feels as he struggles to adjust to life on Mars.
What do the quotes represent?The description of the wind "whining" emphasizes the eerie and unsettling nature of the planet's environment. The idea that the Martian air might "draw his soul from him" is a metaphor for the idea that the planet's harsh conditions could ultimately break his spirit and erode his humanity.
The comparison to marrow coming from a bone highlights the inevitability and power of this process. This quotation sets the tone for the story, emphasizing the idea that the human characters are vulnerable and isolated in a hostile and alien environment, and that their struggle to survive on Mars will be fraught with danger and uncertainty.
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When hypothesizing a possible phylogeny in order to classify taxa,scientists incorporate systematics to
A)provide primarily morphological information.
B)provide molecular or genetic information,as well as morphological information.
C)name organisms using a genus and specific epithet.
D)create a hierarchy of classification based upon reproductive mating patterns.
Answers
Answer:
B)provide molecular or genetic information, as well as morphological information.
Explanation:
Systematics is the science of classification and phylogeny reconstruction. Studies diversity as a consequence of evolutive history and establishes the bases to reconstruct biological patterns and formulate hypotheses to explain the processes of these patterns. It reconstructs the origin and diversification of a taxon. Systematics creates systems of classification represented in a tree. Taxonomy is based on systematics.
The main goal of systematics is to solve the genealogical relationship between different species and biological groups that produces natural clusters.
Systematic considers morphological characters, as well as physiological, cytological, molecular, and behavioral characters.
This is Oceanography.
Answers
Answer:
the branch of science that deals with the physical and biological properties and phenomena of the sea
Which statement best summarizes the process represented by the model?
Chloroplast
Intermembrane B
A Space
Outer Membrane
Granum
(Stack of Thylakoids)
Thylakoid
Light
Dependent
Reactions
C
F
ENT
Calvin
Cycle
D
G
Inner Membrane
Stroma
(Fluid)
OA. Energy from sunlight moves through trophic levels.
B. Solar enerav is converted and stored in chemical bonds.
Answers
Answer: solar energy is converted and stored in chemical bonds.
Explanation:
Which of these groups has the most organisms?
Answers
Answer:
The answer is Kingdom
Explanation:
an organism's diploid number is 16, and a cell undergoes mitosis, what number of chromosomes would you expect to find in the daughter cells after mitosis is completed
Answers
After mitosis, each daughter cell would also have a diploid number of 16 chromosomes.
This is due to the fact that mitosis is a cell division process in which the chromosomes are reproduced and resolve into two identical sets, each of which is allocated to one of the son cells. As a result, each son cell has the same number of chromosomes as the parent cell.
Following the completion of mitosis, the son cells will have the same number of chromosomes as the parent cell. As a result, if the organism is diploid, each son cell formed by mitosis will contain 16 chromosomes. Mitosis ensures that the inheritable material is unevenly distributed across the son cells, icing that each cell has a complete set of chromosomes.
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What is likely contributing to Adam’s low HDL cholesterol levels? a) high saturated fat intake. b) low omega-3 fatty acid intake. c) high trans fat intake. d) low physical activity levels.
Answers
The factor that is likely contributing to Adam's low HDL cholesterol levels is low physical activity levels. (D)
HDL cholesterol, or high-density lipoprotein cholesterol, is known as the "good" cholesterol because it helps remove excess cholesterol from the body and prevent it from building up in the arteries. Low HDL cholesterol levels can increase the risk of heart disease and other health problems.
One of the main factors that can contribute to low HDL cholesterol levels is a lack of physical activity. Regular exercise can help increase HDL cholesterol levels and improve overall heart health. Other factors that can contribute to low HDL cholesterol levels include a diet high in saturated and trans fats, smoking, and genetic factors.
In Adam's case, his low physical activity levels are likely the main factor contributing to his low HDL cholesterol levels. By increasing his physical activity levels, Adam may be able to improve his HDL cholesterol levels and reduce his risk of heart disease.
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How is it too late to change climate change?
Answers
It is not too late to address climate change, but urgent action is required to mitigate its impacts.
What is climate change?Climate change is a complex global issue that results from human activities such as burning fossil fuels, deforestation, and industrial processes. These activities release large amounts of greenhouse gases (GHGs) into the atmosphere, which trap heat and cause the Earth's temperature to rise.
The Intergovernmental Panel on Climate Change (IPCC) has warned that global warming must be limited to 1.5 degrees Celsius above pre-industrial levels to avoid the most catastrophic impacts of climate change.
To achieve this goal, significant reductions in GHG emissions are necessary, and this requires a global effort to transition away from fossil fuels to renewable energy sources, improve energy efficiency, and increase carbon capture and storage.
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(Please explain the correct answer-- I picked letter A)
The highest surface wind speeds occur when there is a:
A) 4 millibar air pressure difference between 2 nearby locations
B) 4 millibar air pressure difference between 2 distant locations
C) 20 millibar air pressure difference between 2 nearby locations
D) 20 millibar air pressure difference between 2 distant locations
Answers
Rationalize on why a leaky heart valve might injure the heart overtime?
Answers
Over time, a leaking heart valve can harm the heart by increasing strain, enlarging the heart, and causing pulmonary hypertension, arrhythmias, as well as blood clots.
Mitral regurgitation, another name for a leaky heart valve, happens when the mitral valve malfunctions and opens improperly, enabling blood to travel backward into the left atrium of the heart. Over time, this may have several detrimental impacts on the heart:
Increased workload: The leaky valve increases the blood flow and pressure in the left ventricle, which can add to the heart's burden.
Heart enlargement: Over time, the heart may expand and weaken due to the greater strain, developing heart failure.
Pulmonary hypertension: The enlarged left ventricle may also result in enlarged pulmonary vessels and arteries, which would result in pulmonary hypertension.
Arrhythmias: A leaky valve may raise the chance of arrhythmias by altering the structure and operation of the heart. (abnormal heart rhythms).
Blood clots: Because of the leaky valve's instability, there is also a higher chance of developing blood clots, which can result in a stroke or other problems.
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What adaptations of large herbivores allow them to live in the taiga? (Select all that apply.)
They have thick fur on their bodies.
They have scales that help them swim to get food.
They are cold-blooded to stay warm.
They can exist on a more limited diet.
Answers
Answer:
A And D
Explanation:
I got it right and it isnt A and C
Do you think these fish are an example of natural selection among two populations of the same species? Explain your answer.
Answers
Answer:
It depends on the fish (I do not see any pictures) Any fish is an example of natural selection.
Explanation:
A good example would be that polar bears grew and evolved to have white fur to blend in the snow to sneak upon prey. However, their brown bear counterparts failed to do that. So due to better camouflage and hunting technique, the polar bears survived more up north.
Answer:
The two fish are of the same species because they can mate with each other. Also, the characteristics of the blind cave fish enable them to live in caves. Eyes need energy. So, developing bodies with no eyes allowed these fish to function more efficiently.
Explanation:
Place the events in order of what happens when a neuron fires an action potential.
a.The neuron begins to repolarize.
b.As the charge returns to the resting potential, the refractory period ends.
c.Ions rush into the cell via ion channels along its dendrites.
d.The voltage inside the neuron transitions from negative to positive, triggering an action potential to fire down the axon.
e.The cell reaches an even more negative charge than when it started, briefly making another action potential impossible.
Answers
The events in order when a neuron fires an action potential are c.Ions rush into the cell via ion channels along its dendrites., d.The voltage inside the neuron transitions from negative to positive, triggering an action potential to fire down the axon. a.The neuron begins to repolarize, e.The cell reaches an even more negative charge than when it started, briefly making another action potential impossible. and b.As the charge returns to the resting potential, the refractory period ends.
What is a membrane action potential?A membrane action potential is an expression used to denote the change in the electrical charge of the neuro cell that leads to the transmission of the signal
Therefore, with this data, we can see that an action potential is based on changes in the electrical signals in the nerve cells.
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This time period allowed for great advancements in technology and human health but it also led to many environmental problems. 5c
Group of answer choices
agricultural revolution
american revolution
industrial revolution
paleolithic era
Answers
Answer:
C. Industrial Revolution
Explanation:
Took the test ;)
Also, the new machines in the industrial revolution helped human health and of course, advanced technology but the machines and the mining harmed the environment.
you are doing a mark-recapture experiment to determine the population size of the mendaliens living on an island in my back yard. initially, you catch and mark 130 mendaliens, which you then release. next, you capture 90 mendaliens, of which 20 are marked. what is your estimate of the population size of mendaliens living on the island in my back yard? you are doing a mark-recapture experiment to determine the population size of the mendaliens living on an island in my back yard. initially, you catch and mark 130 mendaliens, which you then release. next, you capture 90 mendaliens, of which 20 are marked. what is your estimate of the population size of mendaliens living on the island in my back yard? 234,000 29 130 585 14
Answers
Your estimate of the population size of mendaliens living on the island in your backyard is 585.
1. First, note the marked mendaliens (130) and the proportion of marked mendaliens in the second capture (20/90).
2. Use the formula: Total population = (Marked mendaliens * Total captured in the second attempt) / Marked mendaliens captured in the second attempt.
3. Substitute the values: (130 * 90) / 20 = 585.
4. The estimated population size is 585 mendaliens. This mark-recapture method assumes equal catchability, closed populations, and marks remain detectable throughout the study.
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