Explain how the sodium/potassium exchange pump in the axon of neurons
maintains polarity. (2 marks)
Explain why polarity in an axon is necessary.
The sodium-potassium pump maintains cell polarity by moving ions in and out against their concentration gradient, thus maintaining a negative electrical voltage within the cell.
What is the sodium/potassium exchange pump?The sodium/potassium exchange pump is necessary for the exchange of potassium ions for sodium ions, this will be found in the cell membrane and will help maintain the functioning of the cell and the body in general. This process of exchanging sodium for potassium is going to be done against its concentration gradient, since this is impossible by cell media alone, since it is an unfavorable process for the cell, it is going to be necessary to spend energy in the form of ATP, hydrolyzing it, releasing the energy found in its bonds.
Therefore, we can confirm that the sodium-potassium pump maintains cell polarity by moving ions in and out against their concentration gradient, thus maintaining a negative electrical voltage within the cell.
To learn more about sodio/potassium exchange pump visit: https://brainly.com/question/28501199
#SPJ1
What property of the carbon atom makes it unique?
A ionic properties
B bonding properties
C hydrogen bonding strength
D six outer unpaired electrons
Answer: Carbon atoms are unique because they can bond together to form very long, durable chains that can have branches or rings of various sizes and often contain thousands of carbon atoms. Silicon and a few other elements can form similar chains; but they are generally shorter, and much less durable.
Explanation:
Why is active transport necessary for cells?
A. because diffusion is a very slow process
B. because only so many molecules can participate in diffusion per day
C. because sometimes molecules can't get through the cell membrane on their own
Answer:
C Because some molecules can't get through the membrane on their own
why are DNA and RNA considered as acids?
Answer:
DNA and RNA are both considered acids because they are formed from phosphate groups.
Explanation:
These phosphates can readily remove a proton and make the DNA and RNA highly acidic. The nucleotides of DNA and RNA are composed of both the basic and acidic subunits.
a microscope that maintains focus when the objective magnification is increased is called
Answer:
It is called parafocal.
A parafocal microscope
What do the x’s represent on the mitochondria
The X in the diagram mentions the electron transportation. This process happens during cellular respiration.
The third and last phase in aerobic cell respiration is electron transportation and oxidative phosphorylation. In eukaryotic cells, the mitochondrial membrane contains a collection of protein molecules and electron transport system molecules that make up the electron transport chain. The "highly energetic" electrons produced by the cycle of citric acid are transferred to oxygen through a sequence of processes. As h+ ions are pushed out of matrix of the mitochondria and into the cell membranes space, an electrical and chemical gradient is created from across mitochondrial inner membrane. In the end, oxidative phosphorylation—the method by which cell enzymes oxidize nutrients—produces ATP. The energy generated by the electron transport chain is used by the protein ATP synthase to phosphorylate (add a phosphate group to a molecule) ADP into ATP. The majority of ATP is produced during the oxidative phosphorylation and electron transport chain phases of cellular respiration.
Learn more about electron transportation
https://brainly.com/question/13975046?referrer=searchResults
#SPJ9
Which form of energy is used by all living things? mechanical electrical light chemical
Answer:
Chemical Energy!
Explanation:
chemical energy is in all living things - i think that most things would pass away without it due to the fact that we kind of need it to grown and stuff
Answer:
Chemical
Explanation:
It is needed by all living things and every living cell to carry out life processes, such as breaking down and building up molecules, and transporting many molecules across cell membranes. The form of energy that living things need for these processes is chemical energy, and it comes from food.
Hope this helped and have a good day
What is the population density?_______
Answer:
Population density is a measurement of population per unit area.
Explanation:
Give 3 examples and explain how intelligence is based on Nature.
How does most carbon get released back into the atmosphere during the geological carbon cycle?
A. Volcanoes
B. Dead plants & animals
C. Erosion of rocks and minerals
D. Combustion of fossil fuels a over a short period of time
Which of the following occur during mitosis? (Check all that apply.)
A. Cell function slows down
B. The cell divides
C. Chromosomes divide into two groups
D. DNA replicates
E. Proteins are synthesized
Mitosis refers to the cell division process that suffers each diploid cell to produce two new daughter diploid cells. Options A, B and C are correct. A. Cell function slows down, B. The cell divides, C. Chromosomes divide into two groups.
What is mitosis?Mitosis is a cell division process through which a diploid somatic cell or germ cell (2n), produces two daughter diploid cells (2n).
Before mitosis, the whole-cell first suffers duplication of its content during the interphase. Then, mitosis occurs, and then it separates during cytokinesis.
Mitosis occurs in somatic cells and in germ cells.
Options A, B and C are correct.
A. Cell function slows downB. The cell dividesC. Chromosomes divide into two groupsRemember that DNA replication occurs during the interophase, before mitosis.
You can learn more about mitosis at
https://brainly.com/question/26678449
#SPJ1
Answer:
CORRECT IS A B C
Explanation:
have a nice day.
order the components to
show how energy and matter cycle through the kingfisher's ecosystem.
a. aquatic invertebrates
d. aquatic plants
b. kingfisher
e. fish
c. sunlight
d Energy Flow
Answer:
Sunlight > Aquatic plants > Aquatic invertebrates > Fish > Kingfisher
Explanation:
The food chain starts with producers who are capable of producing their own food with help of sunlight. Then aquatic invertebrates, tishes and kingfisher being the successive consumers. This is how the energy and matter flows in a kingfisher's ecosystem.
9.
Wakeny
2015 Encyclopaedia Britannica, inc
If 27,500 Kj is at the producer level how many Kj are available for the secondary
consumers ?
By being consumed by another organism, organic molecules from one organism's body can transfer energy from one trophic level to the next. But typically, there is not a particularly effective way to move energy between trophic levels.
The energy stored as biomass at one trophic level, such as primary producers, only accounts for 10% of the energy stored in the following trophic level (e.g., primary consumers).
In other terms, as trophic levels rise, net production falls by a factor of 10.
First-level trophic level members are producers. In the second trophic level, there are primary consumers. The third trophic level has secondary consumers. Because they are at a low trophic level than Tertiary Consumers, Secondary Consumers receive more energy.Since 27,500 Kj energy is present at the producer level, 10% of it will be available at the primary consumer level. This accounts for 2750 Kj of energy.Now, 10% of 2750 Kj of energy will be available at the secondary consumer level. This is equivalent to 275 Kj of energy.Learn more about trophic levels here:
https://brainly.com/question/1236573
#SPJ9
write E for Exponential Growth and L for Logistic Growth.
______26. This type of growth tends to level off upon the carrying capacity.
_____27. This type of growth has a period of steady growth.
_____28. This type of growth is more realistic and true
_____29. This type of growth keeps growing forever if unchecked
Only distinct populations of the same organism can experience the statement. The two growth strategies occur in various ways.
What is a growth in logistics?
When a population's rate of per capita growth declines as it approaches the carrying capacity, a limit set by finite resources, logistic growth occurs.
What are exponential growth and logistical growth?
There are two different types of population increase: exponential growth and logistic growth. The population grows at an exponential rate when there are plenty of resources available. When the restricted resources in the environment have an impact on the growing population, logistic growth results.
To know more about logistic growth visit:
https://brainly.com/question/29765933
#SPJ1
Step 1: took ten leaves from a plant
Step 2: weighed all ten leaves
Step 3: hung the leaves up in a classroom for 4 days
Step 4: weighed all ten leaves again
Step 5: calculated the mass of water lost by the leaves
Step 6: repeated steps 1 to 5 with grease spread on the upper surfaces of the leaves
Step 7: repeated steps 1 to 5 with grease spread on both the upper and lower surfaces
of the leaves.
All the leaves were taken from the same type of plant.
Table 2 shows, the student's results.
Table 2
Treatment of leaves
Mass of water the
leaves lost in g
0.98
No grease was used on the leaves
Grease on upper surfaces of the leaves
0.86
Grease on upper and lower surfaces of the leaves
0.01
What mass of water was lost in 4 days through the upper surfaces of the leaves?
[1 mark]
Answer:
i dont understand what is this
whats hypermobility
Answer:
its when your joints move beyond the normal range of motion
Explanation:
Answer:
Hypermobility or being “double jointed” refers to joints that move beyond the normal range of motion.
Explanation:
how do immunizations work with viruses?
Answer:
immunisations can help protect against certain diseases by imitating an infection. This type of imitation infection, helps teach the immune system how to fight off a future infection. Sometimes, after getting a vaccine, the imitation infection can cause minor symptoms, such as fever. Such minor symptoms are normal and should be expected as the body builds immunity.
Once the vaccinated body is left with a supply of T-lymphocytes and B-lymphocytes that will remember how to fight that disease. However, it typically takes a few weeks for the body to produce T-lymphocytes and B-lymphocytes after vaccination. Therefore, it is possible that a person infected with a disease just before or just after vaccination could develop symptoms and get that disease, because the vaccine has not had enough time to provide protection. While vaccines are the safest way to protect a person from a disease, no vaccine is perfect. It is possible to get a disease even when vaccinated, but the person is less likely to become seriously ill.
During the recovery from exercise, explain the
interrelationships between the three energy
systems
Answer:
During the recovery from exercise, the three energy systems work together to replenish the body's energy stores. The anaerobic energy system produces ATP through the breakdown of glycogen, while the aerobic energy system uses oxygen to produce ATP. The third energy system, the phosphagen system, provides ATP for short bursts of energy.
Explanation:
Give me brainliest if that helped!
where is atp synthesized in photosynthesis?
Answer:
During photosynthesis in plants, ATP is synthesized by ATP synthase using a proton gradient created in the thylakoid lumen through the thylakoid membrane and into the chloroplast stroma.
betweeen altitude versus average number of red blood cells which one is a dependent variable
Answer:
number of red blood cells
Explanation:
the number of red blood cells depend on what altitude you are at therefore its the dependant variable. altitudes is not dependant on anything so we say it's the independent variable
Describe the following spheres of the Earth.
1. Geosphere
2. Biosphere
3. Atmosphere
4. Hydrosphere
Explanation:
1. Geosphere
Geo means “earth.” The Earth’s geosphere (sometimes called the lithosphere) is the portion of the earth that includes rocks and minerals. It starts at the ground and extends all the way down to Earth’s core.
We rely on the geosphere to provide natural resources and a place to grow food. Volcanos, mountain ranges, and deserts are all part of the geosphere.
2. Biosphere
Bio means “life.” The biosphere is made up of all the living things on Earth and it includes fish, birds, plants, and even people.
The living portion of the Earth interacts with all the other spheres. Living things need water (hydrosphere), chemicals from the atmosphere, and nutrients gained by eating things in the biosphere.
3. Atmosphere
Atmos means “air.” The atmosphere includes all the gases surrounding the Earth. We often call the atmosphere “air.” All planets have an atmosphere, but Earth is the only planet with the correct combination of gases to support life.
The atmosphere consists of five layers and is responsible for Earth’s weather. Even though it seems like air is made of nothing, it consists of particles too small to be seen. All these particles have weight that push down on Earth. The weight of air above us is called air pressure.
4. Hydrosphere
Hydro means “water.“ The hydrosphere includes the oceans, rivers, lakes, groundwater, and water frozen in glaciers. 97% of water on Earth is found in the oceans. Water is one of the most important substances needed for life and makes up about 90% of living things. Without water, life would not be possible.
Where does an organization's culture originate?
The organizational culture shared the social knowledge with the other organization but with in the limits of rules and regulations.
Where does an organization's culture originate?
Organizational culture shared the social knowledge with the other organization but in the limits of rules and regulations and also with the attitude behaviour of the employee.
The aim of the organization culture is to shared believe, norms, values and also includes the practicing because the practicing characterize or organize an organization. There are many sources of the organization culture but the most important sources of the organization culture includes the property rights according to employees, structure of the organization, organizational ethics and many more sources. The organization culture actually comes from the founder of the company.
So we can conclude that the organizational culture shared the social knowledge with the other organization but with in the limits of rules and regulations.
Learn more about Organizational Culture here: https://brainly.com/question/26965722
#SPJ1
Six images of organisms are below.
Drag and drop each organism to place them in the correct order of succession, from first to last, in an area consisting mostly of rock.
A
First: D
F
B
C
Last: E
Answer:
C or B
Explanation:
I don't know the answer but Hope it's help ◉‿◉
6. Adding plant food to a lawn affects the height of grass. What is the independent variable?
a. The height of the grass
b. The plant food
c. The temperature of the weather
7. Adding plant food to a lawn affects the height of grass. What is one control you would need to
The independent variable here is option b. the plant food.
In the given experiment, the hypothesis is whether adding plant food to the lawn affects the height of the grass.
The dependent variable that will reflect changes due to alterations in other variables would be the height of the grass.
To determine the cause of one factor over another in experiments, two variables are required. The independent and dependent variables are these. In an experimental study, the independent variable can be changed, manipulated, or adjusted. On another variable, which is a dependent variable, the impact of such manipulation is shown. The outcome of the experiment can be determined by tracking changes in the dependent variable.The cause is the independent variable. Its value is unaffected by the other study variables. The effect is the dependent variable.Hence, the independent variable here is option b. the plant food.
Learn more about variables here:
https://brainly.com/question/1479694
#SPJ1
Based on this information, which of the following new combinations of race car characteristics would most likely be the fastest?
OA. straw diameter = 0.75 cm, car mass = 2.75 g
OB. straw diameter = 2.25 cm, car mass = 2.75 g
OC. straw diameter = 2.25 cm, car mass = 4.50 g
OD. straw diameter = 0.75 cm, car mass = 4.50 g
Answer:
A
Explanation:
well the reason why is because the smaller the diameter the faster it will go
. What does lactose break down into?
Answer:
The lactase in your small intestine should break lactose down into sugars called glucose and galactose, which are then absorbed into your bloodstream.
Explanation:
Which cell organelle could
function as a mouth?
Lysosome cell organelle could function as a mouth.
Because its primary role in preserving cellular homeostasis is to break down the waste present in a cell, the lysosome should be seen in greater numbers when the breakdown of molecules is necessary, such as in the process of breaking down food. Because it is packed with digestive enzymes that would effectively complete this process, it is well suited to breaking down food as you take it.Food is truly consumed in the mouth, where chewing initiates the mechanical process that leads to digestion. Food is broken down into smaller particles and combined with saliva in this manner. The chemical digestion of starch is already underway thanks to the amylase enzyme found in saliva.To learn more about Lysosome.
brainly.com/question/13386978
#SPJ1
Attached earlobes are a recessive trait in humans. In the tree below, people
with attached earlobes are shaded in. Which best describes the person
labeled X in the tree
A male with one recessive allele is the correct answer.
What do you mean by recessive allele:
Earlobes of this kind are tiny and fastened firmly to the side of the head. The lack of the dominant allele in the chromosomes is what causes this type of lobe to form structurally. An connected earlobe is expressed by the recessive allele.
The children from this generation are the result of a cross between homozygous recessive (one parent) and heterozygous (two parents) parents. All of the filial 1 (one) generation's kids will therefore carry a recessive allele. The attached earlobe trait won't be present in people with the same dominant allele, though.
Having an attached earlobe a dominating human characteristic?Some people's ear lobes are free, whereas others have them linked to the side of the head. This is caused by a gene that is recessive in people with attached earlobes and dominant in people with detached earlobes. Therefore, in humans, attached ear lobes are recessive.
To know more about recessive trait, visit:https://brainly.com/question/1600270
#SPJ9
Someone, Please Help me with this table
The complete table of the biological molecules and their functions are given below:
Simple Carbohydrates
Elemental Make Up: Carbon, hydrogen, Oxygen
Basic Structure: Cyclic compounds
Monomer: Glucose, Galactose
Function(s): Provides energy
Examples in the human body: Glucose, Galactose
Complex Carbohydrates
Elemental Make Up: Carbon, hydrogen, Oxygen
Basic Structure: straight and branched chains
Monomer: Glucose
Function(s): structural molecules, energy storage
Examples in the human body: glycogen
Lipids (Fats)
Elemental Make Up: Carbon, hydrogen, Oxygen
Basic Structure: straight chains
Monomer: Fatty acids and glycerol
Function(s): structural molecule, energy storage
Examples in the human body: cholesterol, sphingolipids
Proteins
Elemental Make Up: Carbon, hydrogen, Oxygen, Nitrogen, Sulfur
Basic Structure: linear peptides
Monomer: amino acids
Function(s): enzymes, hormones, transporters
Examples in the human body; Insulin, catalase
Nucleic Acids
Elemental Make Up: Carbon, hydrogen, Oxygen, Nitrogen, Phosphorus
Basic Structure: Linear chains
Monomer: thymine, uracil, cytosine, guanine, adenine
Function(s): stores genetic information
Examples in the human body: DNA, RNA
ATP
Elemental Make Up: Carbon, hydrogen, Oxygen, Nitrogen, Phosphorus
Basic Structure: three-dimensional molecule
Monomer: ATP
Function(s): energy molecule
Examples in the human body: ATP in muscles
Water
Elemental Make Up: Hydrogen and oxygen
Basic Structure: trigonal pyramid
Monomer: water
Function(s): main component of cytosol
Examples in the human body: in interstitial fluid
What are biological molecules?Biological molecules are basic molecules found in living organisms.
Biological molecules are important structural and metabolic molecules in the body.
The main biological molecules include:
Simple CarbohydratesComplex CarbohydratesLipids (Fats)ProteinsNucleic AcidsATPWaterIn conclusion, biological molecules are the molecules of life.
Learn more about biological molecules at: https://brainly.com/question/10904629
brainly.com/question/27854037
#SPJ1
Some students grew sunflower plants in their school's biology laboratory. The following table and graph show the conditions and results of the experiment after three weeks. Use this information to answer the following questions.
Your question is incomlete
The question is incomplete, please refer below for complete question along with their answers (attaching a picture for the results of the experiment also):
1. Explain if it was controlled experiment?
A. Yes, the given experiment is a controlled experiment, that is, it has an experiment group and a control group.
2. Define a probable hypothesis for the experiment along with stating the variables.
Hypothesis: Different wavelength of light affects the growth of plants. Independent Variable: color of lightDependent Variable: Plant Growth3. Name the experimental subjects?
A. Plant A and Plant B.
4. Name the control.
A. Plant C because it is kept in standard lighting conditions (i.e. white light).
5. List the names of the controlled variables in the given experiment?
A. Temperature, humidity, and water.
As stated in the question, the entire process is an experimental setup where tests are being done to see how well plants thrive in a regulated environment. The different variables, including temperature, humidity, and water are fixed. After three weeks under these regulated conditions, several plants display different growth.
Learn more about plant growth here:
https://brainly.com/question/9323511
#SPJ9
