explain the differences in structure and function between the cell wall and the cell membrane
Answers
CELL WALL -
-protects cell externally
-Thick and rigid
CELL MEMBRANE -
-Protects cell internally
-Thin and delicate
HOPE IT HELPS :)
Answer:
Cell wall:
Functions as a storage unit by storing carbohydrates for use in plant growth, especially in seeds.It allows entry of smaller molecules through it freely.
Cell Membrane:
Protecting the integrity of the interior cell.
Providing support and maintaining the shape of the cell.
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Explanation:
Related Questions
1. set the initial number of colors to "2", and set the initial number of turtles to "100". what do you observe? how many generations did it take for one color to go extinct?
Answers
With the initial number of colors set to 2 and the number of turtles set to 100, it takes a few generations for one of the colors to go extinct.
Setting the initial number of colors to 2 and the number of turtles to 100 in a simulation means that there are 100 turtles, each with one of two different colors. This could represent a population of animals with different genetic traits.
In each generation, the turtles will interact with each other and some may reproduce, passing on their traits to their offspring. This means that the number of turtles of each color may change over time.
In some cases, one of the colors may become more common, while the other color may become less common or even go extinct. This can happen if the turtles with one color are more successful at reproducing or if they have traits that give them an advantage in their environment.
The number of generations it takes for one color to go extinct will depend on the specifics of the simulation and the interactions between the turtles. It could take a few generations or many generations for one color to disappear completely.
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Which process involves glucose reacting with oxygen to produce energy, carbon dioxide, and water?
Answers
Answer:
Respiration...................
A widespread population of the miniature burrowing pig (Microscrofus troglodytes) is thought to actually consist of smaller local breeding units either side of an ecotone. 120 individuals were sampled across this distribution and genotyped for the AbClocus. The results were as follows: Is this population in HWE? Test using the chi-square test. Show working. If not, how does it deviate from HW expectation? What is the result? Do the data support the original hypothesis? Can you think of any other explanation? How might you test your hypotheses further?
Answers
Answer:
Explanation:
To determine whether the population is in Hardy-Weinberg equilibrium (HWE) for the Ab locus, we need to compare the observed genotype frequencies with the expected frequencies under HWE assumptions. The expected genotype frequencies under HWE can be calculated using the allele frequencies observed in the population.
Let's assume that the Ab locus has two alleles, A and B. We'll denote the allele frequencies as p and q, respectively, and the expected genotype frequencies under HWE as p^2 (AA), 2pq (AB), and q^2 (BB).
Given the genotyping data, we can analyze the observed genotype frequencies and calculate the expected frequencies. Let's say we obtained the following counts:
AA: 45 individuals
AB: 60 individuals
BB: 15 individuals
To determine the allele frequencies, we can calculate the allele counts. Let's denote the frequency of allele A as p and allele B as q.
Count(A) = 2 * AA + AB = 2 * 45 + 60 = 150
Count(B) = 2 * BB + AB = 2 * 15 + 60 = 90
Total count = Count(A) + Count(B) = 150 + 90 = 240
p = Count(A) / Total count = 150 / 240 = 0.625
q = Count(B) / Total count = 90 / 240 = 0.375
Now, we can calculate the expected genotype frequencies under HWE:
p^2 = (0.625)^2 = 0.390625
2pq = 2 * 0.625 * 0.375 = 0.46875
q^2 = (0.375)^2 = 0.140625
To determine whether the population is in HWE, we can perform a chi-square test using the observed and expected genotype frequencies.
Observed:
AA: 45 individuals
AB: 60 individuals
BB: 15 individuals
Expected (calculated above):
AA: (0.390625) * 120 = 46.875
AB: (0.46875) * 120 = 56.25
BB: (0.140625) * 120 = 16.875
To conduct the chi-square test, we compare the observed and expected frequencies for each genotype and calculate the chi-square statistic:
Chi-square = Σ [(Observed - Expected)^2 / Expected]
Calculating for each genotype:
AA: [(45 - 46.875)^2 / 46.875] = 0.07602
AB: [(60 - 56.25)^2 / 56.25] = 0.26765
BB: [(15 - 16.875)^2 / 16.875] = 0.10741
Summing the values:
Chi-square = 0.07602 + 0.26765 + 0.10741 = 0.45108
Degrees of freedom (df) = Number of genotypes - 1 = 3 - 1 = 2
To determine whether the population is in HWE, we compare the chi-square statistic with the critical value from the chi-square distribution table for the given significance level and degrees of freedom. If the calculated chi-square value exceeds the critical value, we reject the null hypothesis of HWE.
Alternatively, we can use statistical software or an online chi-square calculator to obtain the p-value associated with the calculated chi-square value. If the p-value is below the chosen significance level (e.g., 0.05), we reject the null hypothesis.
Further analysis:
If the population is not in HWE, it suggests that there are deviations from the expected genotype frequencies. The deviations could indicate factors such as non-random mating, genetic drift, selection, mutation, or migration.
To explore the deviations further and understand the factors contributing to the population's deviation from HWE, additional investigations can be conducted. These might include:
1. Investigating mating patterns: Assessing whether individuals are preferentially mating with individuals of certain genotypes or from specific breeding units.
2. Genetic drift: Analyzing the population size and potential bottlenecks or founder effects that could contribute to deviations from HWE.
3. Selection: Examining whether natural selection is acting on the Ab locus, leading to deviations from expected genotype frequencies.
4. Mutation and migration: Assessing the potential impact of new mutations or migration from other populations on the observed genotype frequencies.
By conducting these additional investigations, we can gain a better understanding of the factors influencing the population's deviation from HWE and further test the original hypothesis.
How do these two selections contribute to the effectiveness of the author's exposition?
(A)They present and address counterclaims about the purpose and function of homeostasis.
(B)They contrast homeostasis with other common processes in the human body.
(C)They provide evidence that ideas about homeostasis have evolved over the last century.
(D)They suggest that early ideas about homeostasis were significantly flawed.
Answers
The question does not have the article on homeostasis so as to make the inference.
What is homeostasis?Homeostasis is the maintenance of a stable internal environment within an organism despite external changes. It is the regulation and balance of various physiological processes to keep the body in a steady state. The human body has many systems and mechanisms that work together to maintain homeostasis, such as the nervous system, endocrine system, and immune system.
For example, the body maintains a constant internal temperature through processes like sweating and shivering, and it regulates blood sugar levels through insulin and glucagon. Homeostasis is essential for the proper functioning of the body and overall health, and disruptions in homeostasis can lead to illness and disease.
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advantages and disadvantages of insert pollination
Answers
You may have heard that bees are disappearing and bats are dying. These and other animal pollinators face many challenges in the modern world. Habitat loss, disease, parasites, and environmental contaminants have all contributed to the decline of many species of pollinator
In the United States, the pollinators which we depend on for the majority of our pollination services are bees, including the non-native European honeybee and over 4,000 species of native bees. Evidence of population declines of bees, not only in the United States, but around the world, has prompted scientists to encourage changes in ecosystem management.
Pollinators are a reminder that of the 100 crop species providing 90 percent of the world's food, over 70 are pollinated by bees.
Improving existing and providing new habitat for pollinators has become a major focus for Natural Resources Conservation Service (NRCS) in working with our many partners and private land owners.
identify the true and false statements about race.
Answers
The true and false statements about race are as follows:
True Statement(s): There is no race chromosome in our DNA, Race is a social construct.
False Statement(s): Race is by definition about differences in physical appearance, Race is not real.
What is race?Race is a concept used to categorize humans into distinct groups based on physical and biological characteristics, such as skin color, facial features, and hair texture.
Race has been used to distinguish groups of people and has been historically tied to social, economic, and political power. However, the concept of race is not supported by modern genetic research, as genetic variations do not align with racial categories. Thus, there is no race chromosome in our DNA.
Race is a social construct that is subject to change over time and varies between different cultures and societies.
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Complete question:
identify the true and false statements about race.
There is no race chromosome in our DNA.
Race is a social construct.
Race is by definition about differences in physical appearance.
Race is not real.
The nurse completes hemodynamic readings via a pulmonary artery catheter. Which findings are consistent with cardiogenic shock?
Answers
Hemodynamic findings consistent with cardiogenic shock include decreased cardiac output, elevated pulmonary capillary wedge pressure, reduced stroke volume, elevated systemic vascular resistance, and low cardiac index.
In cardiogenic shock, the heart's ability to pump blood effectively is severely impaired, leading to inadequate perfusion of tissues and organs. The following findings are consistent with cardiogenic shock:
Decreased Cardiac Output (CO): Cardiac output is the amount of blood pumped by the heart in one minute. In cardiogenic shock, CO is significantly reduced due to the heart's inability to pump effectively.Elevated Pulmonary Capillary Wedge Pressure (PCWP): PCWP is a measure of left ventricular filling pressure and reflects the pressure within the pulmonary circulation. In cardiogenic shock, PCWP is often elevated due to impaired left ventricular function.Reduced Stroke Volume (SV): Stroke volume is the amount of blood ejected by the heart with each contraction. In cardiogenic shock, SV is decreased because the heart is unable to pump an adequate volume of blood per beat.Elevated Systemic Vascular Resistance (SVR): Systemic vascular resistance refers to the resistance encountered by blood flow in the systemic circulation. In cardiogenic shock, SVR may be elevated as a compensatory mechanism, attempting to maintain blood pressure and organ perfusion.Low Cardiac Index (CI): Cardiac index is a measure of cardiac output adjusted for body surface area. In cardiogenic shock, CI is typically low due to decreased cardiac output.Learn more about cardiogenic shock at
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During the absolute refractory period the neuron
a. cannot fire again because the potassium channels are unable to open.
b. can fire again but only to a stronger than threshold s
Answers
During the absolute refractory period, the neuron cannot fire again because the sodium channels are inactivated and incapable of opening. The absolute refractory period is a brief period of time following the firing of an action potential in a neuron when it is unresponsive to further stimulation.
This period is characterized by the inactivation of voltage-gated sodium channels, which are responsible for the rapid depolarization phase of an action potential.
Once the neuron has fired an action potential and entered the absolute refractory period, the sodium channels remain inactivated, making it impossible for the neuron to generate another action potential regardless of the strength of the stimulus. The neuron must first undergo repolarization and the reactivation of the sodium channels before it can respond to subsequent stimuli.
It is important to note that the absolute refractory period ensures the proper propagation of action potentials and prevents the neuron from firing continuously or inappropriately.
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In which phylum is the organism thought to be the world’s oldest living tree?.
Answers
Answer:
it is phylum Coniferophyt
Explanation:
Because it is 4,600 years old, therefore that is the organism thought to be the worlds oldest living tree.
Which two mineral samples would be most
difficult to distinguish from each other based on
their color, luster, and streak?
Answers
Since many minerals have a similar color, luster, and streak, it can be challenging to distinguish them from one another based on these characteristics alone. However, distinguishing between two mineral samples can be particularly challenging, based on these characteristics:
Both pyrite and gold are yellow colored minerals with a metallic luster. They both form a golden-yellow streak, which is another similarity between their streaks.
Hematite and magnetite are two minerals that are dark brown to black in color and have a metallic luster. They both form a reddish-brown streak, which is another similarity between their streaks.
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answer asapppp
Prokaryotes, like most living organisms, need movement to locate food and to survive. If a prokaryote needed to move to a new food source.
which structure would it use for locomotion?
pilli
2
capsule
-flagellum
so
chromosome
Answers
Answer: The answer is flagellum
Explanation: Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea, and flagellum is a whip-like structure that allows a cell to move. They are found in all three domains of the living world: bacteria, archaea, and eukaryota, also known as protists, plants, animals, and fungi. Also The primary role of the flagellum is locomotion, but it also often has function as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. Flagella are organelles defined by function rather than structure. Flagella vary greatly.
( hope this helped )
Answer:
Flagellum
Hope this helps!
Explanation:
explain the difference between an herbivore and an omnivore
Answers
Suggest one reason why most leaves are thin
Answers
Answer:
The leaves are thin in order to stay hanging on a tree branch because if they were too big sure they can probably stay on a tree branch but they can be in a person's way and if the leaves fell, they would hit a person in the head.
Explanation:
:)
Some factors in a particular ecosystem include: sunlight, alfalfa, rabbits, hawks, and mice. Of these factors, which one is the most important to the survival of the ecosystem?
Answers
Where do you think this bird would most likely live? Explain how two of the bird’s features would help it to survive in its environment.
Please No Links
Answers
Answer:
water because it has webbed feet
Explanation:
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what is the net ionic equation and what are the spectator ions of Bel2(aq) + PbSO4(aq) = BeSO4(aq) + Pbl2(s)
Answers
Explanation Worked out
How could a long-term decrease in precipitation impact an area?
A) it could increase the average water level of lakes in the area
B) it could increase the anount of flooding in the area
C) It could decrease the amount of possible infiltration in the area
D) It could decrease the possible amount of damage to crops in the area
Answers
In groundwater resources, One of the possible effects is a decrease in the amount of possible infiltration in the area. Option C is correct
When precipitation decreases, there is less water available to seep into the ground and replenish groundwater reserves.
This can lead to a reduction in the amount of water stored in the soil and aquifers, which are important sources of water for vegetation, wildlife, and human consumption.
Another potential impact of decreased precipitation is a decrease in the possible amount of damage to crops in the area (Option D). With less rainfall, there is a lower risk of crops being damaged by excessive moisture or diseases that thrive in wet conditions. However, it's important to note that a long-term decrease in precipitation can also lead to drought conditions, which can severely impact crop yields and agricultural productivity.
On the other hand, a decrease in precipitation can also have negative consequences. For example, it could lead to an increase in the average water level of lakes in the area (Option A). With less water being replenished by rainfall, lakes may experience a decline in their water levels. This can have ecological and economic implications, affecting aquatic ecosystems, recreational activities, and water availability for human consumption.
Lastly, a decrease in precipitation can increase the amount of flooding in the area (Option B), although this might seem counterintuitive. When the ground becomes dry and compacted due to prolonged drought, it loses its ability to absorb water efficiently. As a result, when heavy rainfall finally does occur, the excess water is more likely to run off the surface, leading to an increased risk of flooding.
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a statement or an assertion , example : "Vitamin C can cure a cold"
Answers
Answer:
claim
Explanation:
Which zone contains the headwaters of a stream system?
A. transition zone.
B. source zone.
C. floodplain zone.
D. delta zone.
E. littoral zone.
Answers
Answer:
A. transition zone
Explanation:
how does the life cycle of houseflies contribute to the presence of e. coli bacteriophages in their guts?
Answers
The life cycle of houseflies contributes to the presence of E. coli bacteriophages in their guts mainly through their feeding and breeding habits.
Houseflies typically feed on decaying organic matter, which can contain E. coli bacteria. When they consume contaminated food, bacteriophages, which are viruses that infect bacteria like E. coli, can also enter the housefly's gut.
Additionally, houseflies lay their eggs in moist and decaying organic material, where E. coli and bacteriophages can be present. As the larvae develop, they consume the surrounding material, which can introduce bacteriophages into their gut.
Once the houseflies become adults, they continue to harbor these bacteriophages in their digestive system. This process allows for the presence and potential transmission of E. coli bacteriophages throughout the housefly's life cycle.
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Through , larger molecules are formed.
Answers
Answer:
Through polymerization larger molecules are formed.
Hope it helps :)
Answer:
Through polymerization larger molecules are formed.
Explanation:
Your Welcome
all fatty acid elements
Answers
Answer:
Carbon Oxygen and Hydrogen are the elements
Explanation:
Which process do ALL living things do? *
Ophotosynthesis
O cellular respiration
O ventilation
O absorb sunlight
Omake glucose
Answers
Photosynthesis -is a process in which plants use to make their food by the help of sunlight
Cellular respiration- means the break down of simple sugars into CO2 and H2O and release energy in the form of ATP . so it takes place in all living things ,in plants and also in animals.
ventilation -means breathing in other word so every living thing doesn't live without breathing .
Absorb sunlight - it is done by plants to make their own food.
Make glucose-plants and animals both use glucose as their main source of energy. The main source of glucose in animals include the diet and process of gluconeogenesis and the primary source in a plants is the process of photosynthesis .
So,cellular respiration , ventilation and make glucose is done by all living things
A teenager has been exposed to a person infected with chicken pox. after 2 weeks, the client has not contracted the virus. how is this possible?
Answers
The teenager must have been vaccinated against the disease.
What is vaccination?Vaccination is a process of obtaining prophylactic treatment against diseases.
The prophylactic treatments given during vaccinations are called vaccines. Vaccines are usually developed from the pathogen of diseases or their components.
Vaccines prevent individuals from being infected with diseases they have been vaccinated against.
Chickenpox is an infectious disease. Thus, the only way that the teenager in question could have taken to not have contracted the disease is a vaccination against the disease.
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How are blood plasma extracellular fluid and lymph interrelated.
Answers
Answer:
A drop of plasma can become a drop of extracellular fluid and then a drop of lymph. Pressure in capillaries forces blood plasma out of the capillaries and into interstitial spaces. The fluid, now called interstitial fluid, becomes lymph as it flows into lymphatic vessels. These vessels return the lymph to the blood at the subclavian veins.
The peptide portion of any protein without its prosthetic group is called ________.
Answers
The peptide portion of any protein without its prosthetic group is called amino acid sequence. Proteins are made of different combinations of amino acids, and when the prosthetic group is removed, the resulting sequence of amino acids is known as the amino acid sequence.
A prosthetic group is a non-amino acid part of the protein which is essential for its functioning, usually a metal ion or a complex organic molecule. It is connected to the protein through a covalent bond and is essential for the protein to maintain its structure and carry out its intended function.
The amino acid sequence of a protein determines its three-dimensional structure, which is essential for it to perform its function. All the different amino acids must be arranged in the correct order and in the correct orientation to create the three-dimensional structure. This is why it is important to know the exact amino acid sequence of a protein - it allows scientists to better understand the protein's structure and its function.
Knowing the amino acid sequence of a protein can also be helpful in understanding how the protein interacts with other molecules and how it is modified. Knowing the amino acid sequence also helps scientists to understand how the protein changes over time and how it responds to various environmental factors.
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While on a field trip, your teacher asks you to record the names of any species you see and to tally the number of individuals of each species you see. What has the teacher asked you to investigate? a. ecosystem diversity c. habitat diversity e. species diversity b. genetic diversity d. structural diversity
Answers
Answer:
Hi how are you doing today Jasmine
The teacher has asked you to investigate the species diversity. Thus, the correct option is E.
What is Species?Species may be defined as a cluster of organisms that can reproduce with one another in nature and produce fertile offspring.
Species diversity is the sum total of all species present in an ecosystem. It may also be described as the number and relative abundance of species present in a given biological organization.
Therefore, the teacher has asked you to investigate the species diversity. Thus, the correct option is E.
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an organism has the genotype aabbcc. gene a is completely linked to gene b, but unlinked to gene c. how many different combinations of these genes could be found in the gametes? a) 1. b) 8. c) 2. d) 3. e) 4.
Answers
An organism has the genotype aabbcc c) 2
In this scenario, gene a is completely linked to gene b, meaning they are located on the same chromosome and do not undergo independent assortment during meiosis. However, gene a is unlinked to gene c, allowing for independent assortment between these two genes.
Since gene a and gene b are completely linked, they will always be inherited together in the same combination. Therefore, there is only one possible combination for genes a and b in the gametes. However, gene a and gene c can assort independently, leading to different combinations.
With gene aabbcc, we can determine the different combinations by considering the two unlinked genes: gene a and gene c. In this case, there are two possible combinations for these genes: ac and ac.
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Identify the structure,is it RNA or DNA? WHY?
Answers
Answer:
what it look like tho
Explanation:
idhehdhdbfuf
3. What is the relationship between
adaptation and natural selection?
Answers
Answer:
hope it helps...
Explanation:
Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.