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In the cells of humans and other animals, a great deal of energy is dedicated to operating a pump that transports sodium (Na+) ions out of cells and potassium (K+) ions into cells. This transport creates a chemical and electrical gradient. Maintaining the proper balance of sodium and potassium is critical to ensuring that nerve cells work properly. Nerve cells drive muscle contractions—including heart muscles—and are responsible for animals’ abilities to sense their environment and for humans’ ability to think.
Scientists gain a better understanding of the sodium-potassium pump by creating models of what the pump accomplishes. Such models are used to examine many other complex processes as well.
This model of the sodium-potassium pump illustrates the process by which sodium is pumped out of cells and potassium is pumped in. The sodium-potassium pump moves the two different ions in opposite directions.
Where in a cell does this transport process take place?
A.
nucleus
B.
cell wall
C.
cell membrane
D.
vesicle
The Transport process takes place in cell membrane.
What is Transport?Cell transport describes the transportation of a material across a cell membrane. The chemical has the ability to enter or exit cells.
The plasma membrane and cell membrane are both permeable to different substances. The nature of the plasma membrane is quite selective.
Cell transport is very important for transport of molecules. There are two transport of cell transport of endocytosis and exocytosis.
Therefore, The Transport process takes place in cell membrane.
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Which of the following best describes a population ? A)members of the same species living in the same place at the same time. B) all members of the same species anywhere on earth at any point in history.C) all kinds of red birds in an area.D) all types of organisms living in the same place
Answer:
a
Explanation:
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What is some
WATER BIOMES??
List at least 2
Answer:
ponds, lakes, river, and streams.
Explanation:
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28
¿Cuántos elementos hay presente en una molécula de agua (H20)?
(3 puntos)
1
2
3
4
Answer:
sana all may brainnnnnnnnnnn
Plz help I need help
Answer:
cell wall
Explanation:
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when do humans use anaerobic respiration
Answer:
Anaerobic respiration in humans occurs in muscles during strenuous exercise when sufficient oxygen is not available.
Explanation:
Discuss how the concept of "survival of the fittest" was developed and what it means
PROMT
Answer:
Survival of the fittest was originally used to describe the ability of a species to thrive despite having some weak offspring. The strong and capable would continue to thrive while the incapable would die or be left behind.
Explanation:
Have a great day, and spread some positivity!
Identify organelles in a plant cell.
The organelles in the plant cell that are shown in the image are: A: Chloroplast, B: Vacuole, C: Cell wall and D: Endoplasmic reticulum.
A: Chloroplast - This organelle is responsible for photosynthesis, the process by which plants convert sunlight into energy and produce glucose. Chloroplasts contain chlorophyll, a pigment that captures light energy.
B: Vacuole - The vacuole is a membrane-bound sac filled with fluid, primarily containing water and various dissolved substances. It plays a role in storing nutrients, waste products, and maintaining turgor pressure in plant cells.
C: Cell Wall - The cell wall is a rigid outer layer found in plant cells, bacteria, fungi, and some protists. It provides structural support and protection for the cell, helping maintain its shape and integrity.
D: Endoplasmic Reticulum (ER) - This organelle is involved in the synthesis, folding, modification, and transport of proteins and lipids. It can be rough (with ribosomes on its surface) or smooth (lacking ribosomes). The rough ER is involved in protein synthesis and modification.
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Which statement correctly describes how energy is made in photovoltaic cells and how energy is made in
photosynthesis?
Answer:
c
Explanation:
edge2021
Answer: Photovoltaic cells need light to make energy, while photosynthesis can make energy that needs light and energy that does not need light.
Explanation: Just took the practice.
What is an electrolytic cell?
A. A cell with a negative cell voltage
OB. A cell with a spontaneous redox reaction
C. A cell with a positive cell voltage
D. A cell that has a salt-bridge connection
Answer:
c
Explanation:
Answer: A. A cell with negative voltage
Explanation: took the test
PLEASE I NEED HELP!!! 100 POINTS!!!
Food sample "E" tested positive for which tests?
2. Explain why glucose continues to enter a cell, even when the concentration inside the cell might be higher than outside.
Answer:
Both diffusion and facilitated diffusion are driven by the potential energy differences of a concentration gradient. Glucose enters most cells by facilitated diffusion. ... Na+ is maintained at low concentrations inside the cell and K+ is at higher concentrations. The reverse is the case on the outside of the cell
Glucose continues to enter a cell, even when the concentration inside the
cell might be higher than outside as a result of the process known as active
transport.
Active transport involves the movement of molecules through a
cell membrane against the concentration gradient. Examples include:
Antiport Pumps.Symport Pumps.This type of transport requires the use of energy such as ATP to move the
glucose molecules into the cell.
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The collect data step of the scientific method comes before the hypothesis step. True or False?
Answer:
true after data collection you state your hypothesis
A particular type of potato can only be produced by cloning from it's eyes or budding. Large commercial growers worldwide now plant only this particular type. Some scientists are warning that exclusively growing this type of potato by asexual reproduction presents a serious disadvantage. Why are these scientists concerned?
If an economically important crop such as the potato as highlighted in the illustration can only be produced by cloning, it is normal for scientists to be concerned because a single even of disease attack might end up wiping the entire crop away.
Cloning is more or less mitosis - a division of vegetative cells. In other words, there is no form of genetic recombination in clones. All clones have exactly the same genes as themselves and their parents.
The implication of an entire population of an organism having the same genetic composition is that they will be resistant and susceptible to the same limiting factors - be it biotic or abiotic. Just an event of a disease outbreak might end up wiping all the population away because there will not be any resilience.
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How did flooding lead to an increase in fires in the Mojave Desert, thus decreasing the Joshua tree population?
Answer: Flooding gave rise to more plant material, which became fuel for fires.
Answer:
Flooding gave rise to more plant material, which became fuel for fires.
Explanation:
Which of the following evidence supports the theory of plate tectonics?
The age of rocks and mountains on the edge of neighboring continents varies.
Fossils from the same species are found on only one continent.
Iron-rich, molten magma rocks no longer align to Earth’s poles in many locations.
Grooves created from glacier movement travel in opposite directions on each continent.
The characteristics of the tectonic plates allows to find the result for the correct statement is:
Iron-rich, molten magma rocks no longer align to Earth’s poles in many locations.
The tectonic plate model establishes that by the hot magma convection currents the solid crust breaks in the weakest areas, forming plates that move floating on this, hot magna that can rise through the cracks and separate these plates.
In the attached we see a diagram of the magnetic alignments in the rocks from a tectonic plate, we can see that the alignment changes due to the inversion of the earth's magnetic field in such a way that we can appreciate the separation of the two plates.
Another proof is that other similar animals are on continents separated by great distances.
Let's analyze the different claims:
a. False. Radioactive dating evidence gives that the rocks give that the rocks on the two continents are the same age.
b. False. Fossils of the same spice are found on several continents.
c. True. These rocks when they emerged were aligned and when moving and the magnetic field reversed the rocks are no longer aligned, this is one of the greatest proof of the separation of tectonic plates.
d. False. The furrows of the glaciers go from the North to the South, it does not have the direction of the displacement of the plates.
In consequence of the characteristics of the tectonic plates we can find the result for the correct statement is:
Iron-rich, molten magma rocks no longer align to Earth’s poles in many locations.
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How is the plasma membrane of a cell like dialysis tubing?
Like a cell membrane, dialysis tubing has a semi-permeable membrane, which allows small molecule to permeate through the membrane. Thus, the dialysis tubing mimics the diffusion and osmosis processes of the cell membrane (Alberts, 2002). ... Instead, facilitated diffusion would be needed to transport the glucose.
Select the statement below that is true concerning the smallpox
a. has not occurred naturally anywhere in the world since 1977.
b. All of the choices are correct.
c. has potential as a weapon of bioterrorism. d. aided European domination of new world nations.
e. has killed millions of people.
Answer:
letter a. has not occurred naturally anywhere in the would since 1977 Ang sagot diyan
Please help and give the right answer. Which statement describes the process of cellular respiration.
A) It takes place only in animal cells and involves chemical reactions with oxygen and releases stored energy.
B) It takes place in plant cells and involves chemical reactions with carbon dioxide, water, and energy from the sun to produce sugars.
C) It takes place in plant and animal cells and involves chemical reactions with oxygen to release stored energy.
D) It takes place in plant and animal cells and involves the division of cells.
Answer:
C
Explanation:
Cellular reparation tales place in both plant and animal cells, and it has to do with energy, using elimination all but C is crossed out.
Glucose+O2---(energy released)--> CO2+water
Hope it is correct
The process of cellular respiration takes place in plant and animal cells and
involves chemical reactions with oxygen to release stored energy.
Cellular respiration involves metabolic reactions which takes place in plant
and animal cells and converts chemical energy into energy in the form of
ATP and then releases waste products.
Cellular respiration usually takes place in the mitochondria as it is regarded
as the power house of the cell.
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what happens when a normal protein is embedded into the cell membrane.
Determine the age of the rocks and fossils by moving the samples to the mass-spectrometer. Record the data in the Student
Guide
Answer:
No answer
Explanation:
This is just a data collecter, to add the information into your 'Student Guide". Don't fret !
Answer:
No answer needed. Just drag them over, and record the evidence in the eNotes.
Explanation:
5. What is the advantage of looking at prepared slides on living and nonliving organisms under the
Micsorocope?
Answer:
Explanation:
Living:
1. You see how the organism (cell) moves.
2. You see how the organism is made up of all sorts of different things that you could not see without the help of a microscope.
3. You see how blood (for example) is made up of all sorts of cells that have far different jobs.
4. You see how bone marrow (for example) shows how different cells interact.
Non Living.
1. You see how the cell structures interlock
2. You see how different structures look under an immense magnification that you cannot see with the naked eye.
3. You see how animal and plant tissue is different.
A scientist hypothesizes that the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
Answer:
9
Explanation:
What is the role of tRNA during translation?
O A. It moves the codons into a chain.
B. It provides the code for the protein.
O C. It translates from amino acids to nucleic acids.
O D. It moves the amino acids into a chain.
Answer:
Role of tRNA in translation
tRNA is responsible for bringing amino acids to to developing chain amino acids on sequence of mRNA through ribosomes.
Explanation:
Answer:
it moves the amino acids into a chain
Explanation:
yourrage told me
What are some characteristics of coral reefs
What are some characteristics of estuaries
Answer:
Coral Reefs are filled with life with their extraordinary colors. As they supply other marine life with homes and hide out's , they are very fragile and delicate. Estuaries are wide and big, they can give homes to much more than the coral can but they can be dirtier than the coral reefs because it's a river unlike the coral reef's beautiful characteristics.
Explanation:
If we flipped a coin 100 times. How many times would we have to get heads to be significantly
different? Make a guess. But it should be close to 63 I
Answer:
24
Explanation:
thats my guess
A cell from which organism would most likely be smallest?
Answer:
A
Explanation:
a bacteria would be the smallest thing in that list resulting in the smallest cell
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Why is plastic a non-biodegradable and nonpoint source of pollution?
Plastic is a non-biodegradable and non-point source of pollution because it cannot be broken down into degradable materials by micro-organisms. It comes from man-made substances and industries therefore, it is non-point pollutant.
What is Plastic?Plastic is a non-biodegradable and non-point pollutant. Because, the enzymes in the microorganisms cannot break down the waste into bio-degradable materials as microbes cannot recognize the bonds that hold these polymers together. Eventually, the polymers in plastic may break down, perhaps after hundreds of years. But after a long time, the damage is already done to the environment.
Nonpoint source of pollution comes from oil, pet waste, herbicide, bacteria, sediment, and any other contaminant that ends up on the ground naturally or from human activity.
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Select the bacterial group below that does not form spores
a. Clostridium botulinum
b. Bacillus anthracis
c. Escherichia coli
d. Clostridium difficile
Answer:
b
Explanation:
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In hot sunlight, dry sand heats up more than ocean water. What principles of heat and thermal energy does this difference demonstrate?
Answer:
1) Heat capacity
2) Thermal Conductivity
3) Heat reflection
Explanation: