Answer:
All cells have some type of membrane or outer layer that protects them.
Neurons are cells of the nervous system. As part of its normal function, a
neuron pumps sodium ions (Na + ) out of the cell and potassium ions (K + ) into the cell. Which statement describes the role of energy in this process?
a. The process releases energy that is used to make ATP.
b. The process releases energy in the form of heat.
c. The process requires energy that is provided by the sodium and potassium ions.
d. The process requires energy that is provided by ATP.
Thank you! :)
Answer:
D. The process requires energy that is provided by ATP.
Explanation:
Neurons use a pump called the sodium-potassium pump, which normally pumps sodium ions out of the cell and pumps potassium ions into the cell.
This pump goes against the concentration gradient to create the resting membrane potential.
Since the pump goes against the concentration gradient, it requires energy, because it is not passive diffusion.
So, D is the correct answer, as the process requires ATP energy.
Neurons are cells of the nervous system. As part of its normal function, a
neuron pumps sodium ions (Na + ) out of the cell and potassium ions (K + ) into the cell. The process requires energy that is provided by ATP. The correct answer is option D.
What is the role of sodium potassium pump ?The role of the sodium potassium pump is the muscle contraction and the nerve impulse. In exchange of 2 potassium ions is the displacement of 3 sodium ion and this exchange is against the concentration gradient thus requires the molecule of ATP for the transfer of the ions.
The Na+/K+-pump an active transporter uses ATP hydrolysis in energy source to move ions across the neuronal membrane down their concentration gradients and assigned specific functions associated with the generation of the action potential as well as with the maintenance of other active transport.
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A large canyon, with a large river running through the bottom, was MOST LIKELY formed by
Answer:
the movements of rivers, tectonic activity, and erosion.
PLEASE I WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST
WORTH 30 POINTS
Answer:
the second one is 1, the first one is 3, the last one is 5, the fourth one is 2 and the third one is 4
match terms w definitions
Answer:
Bipolar or Polarity : B
Surface Tension: F
Capillary: C
Ion: A
Dissolving: D
Specific Heat: E
Answer:
1. Bipolar or Polarity b
2. Surface tension f
3. Capillary action c
4. Ion a
5. Dissolving d
6. Specific heat e
is a gamete a brain cell
Answer:no it’s not a brain cell it’s part of the reproductive system I think
Explanation:
Which of the following BEST explains how scientists are able to determine the
structure of Earth's interior?
1) Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface.
2)Drilling deep within the Earth.
3)By cutting into other terrestrial planets.
4) Our modern knowledge of the Earth's interior is just a guess that many scientists have accepted.
Answer:
I think number 1 is the answer.
Scientists gather indirect evidence using seismic waves (Earthquakes) along with what is visible at Earth's surface. The correct option is 1.
What are seismic waves?Seismic waves are caused by sudden movement of materials within the Earth, such as fault slip during an earthquake.
Seismic waves generated by earthquakes or explosions can travel through the Earth's interior, revealing information about the properties of the rocks and other materials they pass through.
In addition to seismic data, scientists use other indirect methods such as magnetic and gravitational field studies, as well as analyses of rocks and minerals found at or near the surface.
Scientists collect indirect evidence by observing seismic waves (Earthquakes) as well as what is visible on the Earth's surface.
Thus, the correct option is 1.
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Summer or winter?
Why?
( I personally perfer winter because I just like the cold and clothes)
Answer:
winter
Explanation:
because i like to sit by a warm fire and watch cheesy christmas movies. plus the weather is better
Which of the following statements are characteristics of a compound?
1. Compounds are made from two or more elements,
II. A compound is a pure substance.
III. Compounds are represented by a chemical symbol.
IV. Compounds are represented by a chemical formula.
How does carbon from corn end up in human hair?
So if we eat a particular kind of food, and it has a particular kind of carbon in it, that's recorded in us, in our tissues, in our hair, in our fingernails, in the muscles
Morphological distinction is one of the steps necessary for speciation to occur.
What are the other two?
Answer:
Genetic Separation / Geographic isolation
Explanation:
Morphological distinction (or phenotypic differentiation) can be defined as the diversification of a set of observable physical characteristics in a population, capable of differentiating certain species.
The genetic separation occurs when the division of a group of genes into two or more pools of genes separated over time and depending on several other situational factors.
Geographic isolation occurs due to the physical separation of subpopulations of a given species. The barriers that isolate these subpopulations can be, for example, a river that cuts through a plain, a valley that divides plateaus or a portion of the sea that separates islands and continents.
What is a volcano?
A. a tall mountain
B. a chemical reaction that produces fire
C. an atmospheric condition
D. an opening in Earth’s crust
Answer:
c
Explanation:
Answer:
D
Explanation:
I hope this is correct and have a great day
what is meant by ecosystem diversity?
Answer:
Ecosystem diversity deals with the verity in ecosystems within a location and its overall impact on human existence and the environment.
Explanation:
An example of ecological diversity on a global scale would be in different verity ecosystems, such as deserts, forests, grasslands, wetlands and oceans. Hope this helped and have an awesome day! :)
What is the function of Fat cells
Name two possible causes of the largest mass extinction in Earth’s history and explain how this both helped and hurt different species.
Answer:
Explanation:
Two possible causes for the biggest mass extinction event in the history of our planet would be an asteroid impacting the planet and the massive volcanic activity. This mass extinction event is called the Permian-Triassic extinction. This helped many species emerge as survivors and thrive without the oppressive bigger species that died out. It hurt many species that were unable to survive the harsh conditions that resulted from everything that was happening to their habitats and food sources.
How are plants important in maintains oxygen levels
they make oxygen and so we don't die from too much oxygen
PLEASE HELP EHHHHHH );
Answer:
1
Explanation:
Answer:
The answers are 1 and 3.
Explanation:
Viruses are tiny particles, smaller than prokaryotic cells. Viruses are not cells and cannot replicate without help, but they have nucleic acids and can evolve.
Hope that helps and please give me brianliest!!
What features of cells is best demonstration in the image
Answer:
I think its D
Explanation:
The different forms of a characteristic
How do photoautotrophs make energy?
O They convert carbon dioxide, water, and inorganic compounds into carbohydrates.
O They convert carbon dioxide, water, and organic molecules to carbohydrates.
O They convert carbon dioxide, sunlight, and organic molecules to carbohydrates.
O They covert carbon dioxide, water, and sunlight into carbohydrates.
Answer:
c
Explanation:
Answer and will give brainliest and 10 points
Answer: I don't know if this is right but I think it is
b. at the organ level
Explanation:
how does a zygote from
Answer:
Formed when a male gamete (sperm) and a female gamete (egg) combine.
Explanation:
A zygote is formed when these two gametes come together. This initial phase is carried out in the Zygotic stage.
Hope this is correct. Have a wonderful day.
what are the 3 negative effects of global warming/climate change ?
Answer: Effects on weather. Global warming leads to an increase in extreme weather events such as heat waves, droughts, cyclones, blizzards and rainstorms. Such events will continue to occur more often and with greater intensity.
Explanation: nothing to see at this point ;)
Answer:
The ice is melting specially at the earth's pole. This includes moungain glaciers . Much of this melting ice contributes to increse sea-levels.Hlonal sea levels are rasing 0.13 inches a year.Rasing temperature is also an effect oc vloba warming . This causes to the wildlife.
Explain how mitosis
maintains the chromosome number of the
original cells when forming new cells.
Mitosis is a type of cell division that helps to maintain the chromosome number of the original cells by dividing cells that previously duplicate their genetic material (DNA) during the interphase (S phase).
The cell cycle is divided into the interphase and the mitotic (M) phase.The interphase of the cell cycle is in turn divided into three different phases: Growth 1 (G1) phase, Synthesis (S) phase and Growth 2 (G2) phase.During the S phase, the chromosomes (i.e., the genetic material) of a cell are duplicated.Mitosis is a type of cell division that follows the interphase of the cell cycle by which a somatic (body) cell divides to produce two genetically identical daughter cells.In conclusion, Mitosis is a type of cell division that helps to maintain the chromosome number of the original cells by dividing cells that previously duplicate their genetic material (DNA) during the interphase (S phase).
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1) A region of the country is rapidly growing in population, causing the demand for electricity to go up each year. As a result, a new source of electricity is needed. This particular region of the country has plenty of agriculture, rivers, and access to coal deposits underground. Which of the following would be the cheapest way for this region of the country to make electricity, have minimal impact on the environment, yet not add carbon dioxide to the atmosphere?
Group of answer choices
A)Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
B)Use the coal deposits to generate electricity in a few coal fired facilities
C)Build a nuclear power plant in the middle of the region
D)Build dams along the rivers to generate electricity
2)The image provided shows a partial river food web.
The local town relies on this river ecosystem to sustain their population both economically and as a source of food. Using the food web provided, which statement provides the best reasoning for regulating the amount of fish removed from the river by humans.
Group of answer choices
A)Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
B)Regulation will increase the amount of energy transferred from the catfish to the eagle.
C)Regulation will allow contaminated sediments to decrease in the river due the removal of the contamination source.
D)Regulation will ensure that carp will not overpopulate the ecosystem and begin to consume larger organisms like the salmon.
Answer:
The cheapest way for the country to make electricity would be
A) Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
The statement provides the best reasoning for regulating the amount of fish removed from the river by humans is:
A) Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
Explanation:
For the electricity, the use of Biomass meets the demands due to the fact that, it has minimal impact on the environment, does not add carbon dioxide to the atmosphere. Also, it is renewable form of energy.
For the regulation of the amount of fish removed from the river helps to maintain the ecosystem balance. If it was not done, the fishes found in the river will be totally harvested thereby disrupting the chains in that river ecosystem.
In humans type A blood is caused by the antigen A in the red cells resulting from gene A. Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood. If a person of blood group AB marries one belonging to blood group O what will be the blood groups of their children? Show the Punnett square for this cross.
Answer:
Type A and type B
Explanation:
This question is describing blood type in humans. According to the question, type A blood is caused by the antigen A of gene A while Type B is caused by a gene B for antigen B. Type O blood results from the absence of either gene while the presence of both genes causes both antigens to be formed resulting in type AB blood.
If a person of blood group AB i.e. genotype (iAiB) marries one belonging to blood group O (genotype ii), the following genotypes of offsprings will be produced (see attached image for punnet square):
iAi - blood type A
IBi - blood type B
GUYSSS HELPP, ILL MARK YOU BRAINLYYY
Explanation:
1 light energy
2 chemical energy
3 chemical energy
4 light energy
Answer:
1, Light energy
2, Chemical energy
3, Chemical energy
4, Light energy
does the moon have phases that change on a monthly basis
Wilting
Stimulus = _______________ Response = ____________________________________________
A not enough water or overwatered, plant stem and leaves are flaccid or droopy
B excessive watering, plant cell vacuole shrinks
C too much sunlight, roots grow downwards
D too much light, plant leaves turn brown
The amusement park will be located in a hot climate. The engineers want to select a material for the giant slide that will prevent the surface from getting too hot. Based on the specific heat values, what material would be the best choice? A.Plastic, because it takes more energy to raise its temperature B.Iron, because it takes more energy to raise its temperature C.Plastic, because it takes less energy to raise its temperature D.Iron, because it less energy to raise its temperature
Answer:
A
Explanation:
The correct answer would be plastic because it takes more energy to raise its temperature.
The specific heat capacity of a substance is the amount of heat required to raise the temperature of the substance by one degree. The more the specific heat capacity of a substance, the more the heat required to raise its temperature.
The specific heat capacity of plastics is generally more than that of metals. Hence, metals will get heated faster than plastics under the same condition. More energy would be needed to raise the temperature of plastics when compared to metals.
the correct option is A.
What is the large caldera that many scientists in
the United States keep an eye on just in case (it
hasn't erupted in 65,000 years)?
A. Mount McKinley
B. Death Valley
C. Yosemite National Park
D. Yellowstone National Park
Answer:
D.
Explanation:
Yellowstone National Park
Answer:
B
Explanation: