Why is the plasma membrane important for the cell?
Answer & Explanation:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
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Name a cell structure you think cells could do without. Then, in a couple sentences, describe how you think why it isn't necessary and/or how other cell structures could take over its role.
There is no cell structure that living cells could live without as cellular structures have function which is peculiar to a part of life process and once any of these structure is removed, life ceases.
This is because the presence of cellular structures in cells of living organisms makes them to live and without these structures, life would not continue.
Living cells cannot function without cellular structures such as nucleus, ribosomes, mitochondria, endoplasmic reticulum and others.
What does a cell means in biology?A cell can simply be defined as the simplest unit of life. All living organisms be it unicellular or multicellular organisms is made up of cell.
The protoplasm of any living cell is made up of nucleus and cytoplasm.The organelles which are found in the cytoplasm are called cytoplasmic organellesSo therefore, there is no cell structure that living cells could live without as cellular structures have function which is peculiar to a part of life process and once any of these structure is removed, life ceases.
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Earth is made of solid materials. Jupiter, Saturn, Uranus, and Neptune are all made of gas. Which is true about the density of these planets?
They are more dense than Earth.
They have no density.
They are less dense than Earth.
They have the same density as Earth.
Jupiter, Saturn, Uranus, and Neptune are less dense than Earth, as shown in the third answer option.
How is this possible?Rocky planets, like Earth, are denser.Gas planets have lower densities.Although Jupiter, Saturn, Uranus, and Neptune are planets that are larger than Earth and have more mass, they are less dense than Earth.
This happens because the material that makes up these planets has very different density levels, since the gases present low density, unlike the rocks that present high density.
In this case, the rocks present on Earth make the planet denser than Jupiter, Saturn, Uranus, and Neptune, which only have gases in their compositions.
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Distinguish between the terms in each of the following pairs
of terms.
what are the strengths of fossil evolution
A student investigates the characteristics of two objects in space.
Object X Object Y
made of ice and dust made of rock
takes more than 100 years to orbit the Sun takes about 4 years to orbit the Sun
Which statement BEST describes the objects?
A student investigates the characteristics of two objects in space.
Object X Object Y
made of ice and dust made of rock
takes more than 100 years to orbit the Sun takes about 4 years to orbit the Sun
Which statement BEST describes the objects?
Object X is a comet, and Object Y is a meteor.
Object X is a comet, and Object Y is an asteroid.
Object X is an asteroid, and Object Y is a comet.
Object X is an asteroid, and Object Y is a meteor.
Based on the description of the two spatial objects, object X is a comet while object Y is an asteroid (option B).
What is a comet?A comet is a celestial body consisting mainly of ice, dust and gas in a eccentric orbit around the sun and having a "tail" of matter blown back from it by the solar wind as it approaches the sun.
On the other hand, an asteroid is a naturally occurring solid object made of rocks, which is smaller than a planet and is not a comet, that orbits a star.
It takes anywhere from three to six earth years for an asteroid to make a complete revolution around the sun. Comets, on the other hand, take more than a hundred years to revolve around the sun.
Therefore, based on the description of the two spatial objects, object X is a comet while object Y is an asteroid.
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Convert the speed of light in km/sec to mph
Pls give step by step
Answer: 1 kilometers per second = 2236.94 miles
Explanation:
o convert from kilometers per hour to miles per hour, divide the measurement in kmph by 1.609344 to get the equivalent in mph.
Identify some characteristics a species may possess that would fuel its ability to cause ecological damage, as the brown tree snake has in Guam.
Overpopulation and food competence are the most important features for which a native species may cause important ecological damage.
What is overpopulation?Overpopulation is a phenomenon in which a population of a given species is over-represented in the ecosystem, which may lead to important disturbances in the homeostatic equilibrium
The lack of homeostatic equilibrium may lead to extinction of competing species and act as a predator of organisms below in the trophic chain.
In conclusion, overpopulation is one of of the most important features for which a native species may cause important ecological damage.
Complete question:
The brown tree snake is native in areas such as Australia and eastern Indonesia. In those ecosystems, the brown tree snake is not causing the decline of bird or tree populations. So what makes this same species damaging in Guam? Identify some characteristics a species may possess that would fuel its ability to cause ecological damage, as the brown tree snake has in Guam. Provide some reasoning for why you chose these characteristics.
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a company sells a sealed glass globe called an "ecosphere" (true story). in the globe, there is water and aquatic plants and animals. Air cannot get into or out the globe because it is entirely sealed. Yet, the animals and plants can survive indefinitely within the globe. a. Explain how it is possible that animals and plants can survive in a sealed environment together.
Answer:
The conservation of mass and energy comes into play.
Energy is not a problem since sunlight can go through glass. The plants will grow and reproduce, producing oxygen that enters the water. Animals eat plants and get energy from them. They too grow and reproduce. They also release carbon dioxide into the water, which plants use to make food.
This cycle can continue forever, or at least for a long time.
Answer:It is possible that animals and plants can survive in a sealed environment together because there is food and water inside the globe for the animals and plants.
psychology; sensation and perception essay 250 words or more
Psychology; Sensation and perception Essay:
Perception involves more than simply combining sensory stimuli; therefore, perception is studied as Gestalt.
According to gestalt view, every individuals had the ability to develop our own mind self-organization which will influence how we response to a certain stimulus and how to analyze it in order to produce the best possible decision. Also Colloquially these people are called brain scientists. At least for cognitive psychologists that is. That is because they study how your brain works and how you perceive things and can even change that with their results. They can prescribe medication that can help change your behavior.
The dvvgggggggghhhhh
Answer:
It would increase the activation energy.
Explanation:
Hey, Can anyone help me with this please? I will give Brainliest.
Answer:
3 = non contactant force
5 is with gravity
and that's all I got cause im tired im sorry
Explanation:
So so sorry
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Which type of biological population growth explains a seasonal swarm of locust?
A. Stable
B. Irruptive
C. Irregular
D. Predator and Prey
The type of biological population growth which explains a seasonal swarm of locust is referred to as Irruptive and is therefore denoted as option B.
What is Irruptive growth?
This type of growth which is characterized by the species of organisms having a sudden rapid growth or explosion which is followed by a sudden crash or die-back.
This is common in organisms who are prevalent in certain periods of the year such as the locust in the rainy season. They can be seen in large quantities and after a while their population is reduced again and then the cycle goes on.
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By having juvenile dinosaurs live in a different niche than the adults decreased competition between the adults and juveniles. True or False
True: By having juvenile dinosaurs live in a different niche than the adults decreased competition between the adults and juveniles.
Tarbosaurus bataar is the juvenile species of the dinosaurs found 70 million years ago. The adult species the Tyrannosaurus rex has a close relationship with the juvenile or the young species. The juvenile species of these dinosaurs lived in a different niche than the adult species. They were fast and agile and went after hunting smaller prey for their survival.
T.rex adults were comparatively larger than their younger ones. They had larger skulls, stronger bites, large muscle attachments, and specialized teeth. While the juvenile species were deprived of these features. This could be the reason why juvenile species faced decreased competition than adults.
Therefore, from the above answer, we can say that the given statement that having juvenile dinosaurs live in different niches than the adults decreased competition between the adults and juveniles.
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The lobes of the cerebral cortex are MOST directly involved in speaking.
According to the research, the correct option is frontal lobe. The frontal lobe of the cerebral cortex is MOST directly involved in speaking.
What is the front lobe?It is the area of the brain that is located in the most anterior part of the head, and it is essential for the human being since it works to plan and coordinate the speaking and social behavior of each individual.
In this sense, working memory, speaking and the articulation of words, movement or self-awareness depend on the frontal lobe, also the prefrontal cortex is located, which is broader and has relationships with many brain structures.
Therefore, we can conclude that according to the research, the correct option is frontal lobe. The frontal lobe of the cerebral cortex is MOST directly involved in speaking.
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1. The graph shows the world human population size and growth rate over time. How are the two sets of data related to each other? What does studying one data set tell you about the other?
The two datasets show the sudden increase in population since the millennium.
What is the comparison between the data?Human population growth has been a matter of concern for several years. It is a known fact that human population has been growing at an unsustainable rate since the millennium especially in developing countries.
Essentially when we talk about the population of a place we talk about the number of people that live in that place. The more the number of people in a place the greater the population of a place and population have been increasing at astronomical rate in recent times.
Looking at the datasets, we can see that, the rate of population growth since sine the 1960s has increased so much and this is quite unsustainable and somehow accounts for the population explosion that is recently occurring in many parts of the world and is leading to many intervention programs.
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Energy is converted from solar to chemical in Process A and then from one form of chemical to another in Process B.
Which is described by Process A?
photosynthesis
cellular respiration
Answer:
The answer is
→ A.) Photosynthesis
or
Artificial photosynthesis
Explanation:
Converting solar energy into chemical energy using artificial photosynthesis is simple and safe for the environment. Nitrogen fixation and photocatalytic water splitting are the two most often researched solar-to-chemical conversion (SCC) processes.
Hence, the answer to this question is photosynthesis.
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- ✨7272033Alt✨Describe the three patterns of communication
The three patterns of communication include:
Verbal CommunicationThe most evident kind of communication would appear to be verbal communication. It makes use of spoken language, either in-person or over the phone. Although most encounters need verbal communication, there are other nonverbal indicators that can add to the meaning of the words themselves. A more sophisticated message is conveyed when spoken language is combined with nonverbal communication.Non-verbal CommunicationThe use of body language might reveal some information about a speaker's word choice. It can reflect sarcasm, complacency, dishonesty, or sincerity. Body language, including the speaker's posture, hand gesture, facial expressions, and even look, is a common way to communicate these things. A untidy speaker with wrinkled clothes and slouching posture, for example, might convey a lack of assurance or knowledge. Visual Communication Signs, maps, and drawings, as well as color and graphic design, are all examples of visual forms of communication. These frequently support verbal communication and aid in proving a point. Visual aids can aid in the presentation of the message by helping the speaker remember key points, providing the audience with something to look at, and more.Learn more about communication here:
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Which statement describes the government of the United States after the American Revolution?
O A new democracy was formed.
It remained under British rule.
A constitutional monarchy was formed.
O Colonists were given representation in Parliament.
Answer:
Explanation:
b
It remained under British rule is a statement describes the government of the United States after the American Revolution.
What is American Revolution?As a small, newly independent nation gained its independence from the most powerful military power of the day, the Revolutionary War fought by the American colonies against Britain had an impact on political ideologies and revolutions all over the world.
During the American Revolution, British colonists in America rose up in revolt against Great Britain's sovereignty. After numerous battles, the colonies were emancipated and formed the independent nation of the United States. From 1775 through 1783, the American Revolutionary War raged.
There were various British Colonies in the Americas prior to the American Revolution. They didn't all take part in the revolution.
Therefore, It remained under British rule is a statement describes the government of the United States after the American Revolution.
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What happens when the
concentration of solutes reaches
equilibrium?
A. One side will have significantly more solutes.
B. The concentration of solutes is the same
throughout the system.
C. There are no longer solutes in the solution.
When the concentration of solutes reaches equilibrium, it means that the concentration of solutes is the same throughout the system (option B).
What is equilibrium?Equilibrium of a system is the condition of a system in which competing influences are balanced and resulting in no net change.
In chemistry, an equilibrium state is said to be achieved when the rates of the forward and reverse reactions are the same.
Ideally, a solution is formed when a solute dissolves in a solvent. However, when the concentration of solutes reaches equilibrium, it is said that the solutes are even or equal throughout the system.
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which of the following best describes respiration
The graphs below show the distribution of heights among people who live in four different countries. On average, which country has the tallest people?
A. W
B. Z
C. X
D. Y
Country Z has the tallest people on an average. Therefore, option (B) is correct.
A distribution graph, also known as a frequency distribution or histogram, is a visual representation of the distribution or spread of a dataset. It displays the frequencies or counts of different values or intervals within a dataset.
The graph consists of a horizontal or vertical axis representing the values or intervals of the variable being measured, and a vertical axis representing the frequency or count of each value or interval. The graph typically consists of bars or columns where the height or length of each bar corresponds to the frequency or count of the corresponding value or interval, providing a visual representation of the data's distribution.
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2.In Figure 4B-1, the leading edge of the Arctic air mass was across northern Texas and the
Panhandle. From roughly Tulsa, OK southwest to Dallas/Ft. Worth and Midland, TX, a(n)
front curved southwestward, with bitterly cold air to the north of the front and milder,
warmer air to the south and west. The greatest thermal contrast was from Midland, TX to
Wichita, KS.
a.warm
B.Stationary
C.cold
D.occluded
The leading edge of the Arctic air mass in Figure 2 reached Texas. At 14Z, the front had just pushed through the southernmost city of Brownsville, TX where a cold front curved westward into Mexico, with bitterly cold air north (behind) of the front. (Option C).
What is Artic Air Mass?
Because the Arctic air mass is extremely cold and dry, it creates the Cold Front. Arctic air masses, are extremely frigid due to their origin in the Arctic or Antarctic regions. Polar air masses, are not as frigid as Arctic air masses since they originate at higher land and sea latitudes.
What are the traits of Artic Air Mass?An arctic maritime air mass has comparable properties to a polar maritime air mass, but the air is colder and less moist due to the shorter sea track.
Arctic air is uncommon in the summer, but when it does arrive, it can bring heavy rain or thunderstorms as well as very low temperatures.
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If 39% of the body weight is distributed above the superior surface of the L5 intervertebral disc and the area of the superior surface of the disc is 25 cm2, how much pressure on the disc is attributable to body weight for a 1000 N man?
The pressure on the disc attributed to body weight for a 1000 N man is 120000 N/m²
Formula for pressureP = F / A
Where
P is the pressureF is the forceA is the area Data obtained from the questionThe following data were obtained from the question:
Area (A) = 25 cm² = 25 × 0.0001 = 0.0025 m²Weight = 1000 NForce (F) = 30% of weight = 30% × 1000 = 300 NPressure (P) =?How to determine the pressureThe pressure can be obtained as follow:
P = F / A
P = 300 / 0.0025
P = 120000 N/m²
Thus, the pressure on the disc is 120000 N/m²
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Which of the following is NOT true of producers in the ecosystem?
A: The use of carbon dioxide to form sugars
B: They get their food from ingesting consumers
C: They include plants
D: They produce sugar molecules that provide food for their consumers
Answer:
B: They get their food from ingesting consumers
Explanation:
Consumers are the ones who get their food from producers, not the other way round. Animals (Consumers) consume the food prepared by green plants (Proudcers).
Why do you think that COVID-19 is spreading so easily across the world?
Answer:
cuz we fly to places and spread it
Explanation:
Which set represents the same relation as the graph below?
55
4
128
"
4
P
458 x
(4-2-2-3-2-1MNQN64(40)
{(54(3-2-1-A(206EREN6-1)}
(-546-3-133436-4}
(4-2-32-12208a64). Edge
Answer:
B. {( -1,-2 ), ( -3,-2 ), ( -5,4 ), ( 2,0 ), ( 3,3 ), ( 4,5 ), ( 6,-4 )}
Explanation:
Which action might occur when the concentration of sugar molecules is
higher outside a cell than inside it?
OA. The cell uses channel proteins to produce more sugar molecules.
B. Sugar molecules flow out of the cell via osmosis.
OC. Passive transport produces more sugar molecules.
D. Some sugar molecules flow into the cell through channel proteins.
Some sugar molecules flow into the cell through channel proteins, because of osmosis. Therefore, option D is correct.
What is osmosis?Osmosis is a process by which solvent molecules move from a lower concentration to a higher concentration through a semipermeable membrane. There are two types of osmosis and that is endosmosis and exosmosis. In endosmosis, solvent moves inside the cell and in exosmosis, solvents move outside the cell.
Hypertonic, hypotonic, and isotonic are three types of osmotic solutions. When a cell is placed in a hypertonic solution, water begins to move outside the cell and it will shrink.
Some sugar molecules flow into the cell through channel proteins when a cell is placed in a sugar solution. Therefore, option D is correct.
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What are the possible benefits and drawbacks of today's system of
taxation?
Disadvantages of Taxation:
Putting in place an income tax system is quite difficult, especially when trying to control the wealthy and companies.Wealthy people benefit from tax evasion and dishonest avoidance because they can afford to pay for expensive tax "help." Warren Buffet, the famed investor, has been quoted as saying that it is unjust that his secretary pays 30% in taxes but Buffet only has to pay 17% on his income.Some contend that an earnings tax, regardless of its level, may cause financial hardship for people in the lower middle class and lower social classes. Any reduction, no matter how minor, can cause households that are barely making ends meet to significantly lower their standard of living.Advantages of Taxation:
The income tax enables progressive taxing based on your income. In terms of percentage, a person making $15,000 a year will pay less than a person making $150,000 a year. This method of wealth distribution works well.The existing arrangement also provides the government with a reliable source of income.An income tax creates a discrepancy between the value of a person’s work and what they actually receive (disposable income).Learn more about taxes here:
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Two fruit flies that are heterozygous for body color
and eye color are crossed. Brown body color is
dominant to black body color. Red eye color is
dominant to brown eye color.
Use the Punnett square to determine the ratio of
offspring with the described trait to the total
number of offspring:
Brown body and red eyes
Brown body and brown eyes
Black body and red eyes
Black body and brown eyes
Answer:
For both traits ( BrBl Rbx BrBl Rb) we would get a 9:3:3:1 phenotypic ratio.
9 Brown body, red eyes (both dominant traits)
3 brown body, brown eyes (one dominant, one recessive trait)
3 black body, red eyes ( one recessive and one dominant trait)
1 black body, brown eyes ( both recessive traits)
Explanation:
Answer:
Brown body and red eyes ⇒ 9 ⇒ 16
Brown body and brown eyes ⇒ 3 ⇒ 16
Black body and red eyes ⇒ 3 ⇒ 16
Black body and brown eyes ⇒ 1 ⇒ 16