What is the cellular boundary found in animal cells?

Answers

Answer 1
I think its the plasma membrane


Related Questions

The major food storage part of carrots is the:

root
stem
branch
leaf

Please help me!!!!!!!!

Answers

The answer is B because that the part of the carrot that has the most storage

Answer:

root is the correct answer.

Explanation:

The major food storage part of carrots is the root.

In carrot, food is stored in the roots and the roots of the carrots are filled with nutrients, sugars, and starches.

the food which is stored in the roots of the carrot helps in the growth of the new plants.

in a forest ecosystem, a robin and a squirrel live in the same tree. the two organisms ___

Answers

they share the same habitat.

T h e y. S h a r e. T h e. S a m e. H a b i t a t

The laws of motion discovered in the 17th century were used to explain force, movement, and acceleration for decades. However, by 1905, there were a number of findings that could not be explained by those laws. Which statement BEST describes the eventual outcome? A) The old laws of motion were discarded in favor of new ones. B) Scientists realized the limitations of the scientific method. C) Scientists formulated a new theory that elaborated on the original. D) All the calculations using the old theory were found to be incorrect.

Answers

The answer is C on usatestprep

Answer:

Option C

Explanation:

Law of motion is a scientific law and like all other scientific laws it does not guarantee accurate explanations to natural phenomenon. Therefore, from time to time with new discoveries, these laws need to be refined in order to comply with new findings and discoveries.  

Therefore, when laws of motion could not explain the new findings it became essential to formulate a new theory based on the existing one.  

Thus, option C is correct

Which of the arrows at right describes the path that energy moves in an ecosystem?

Answers

It is the first arrow, or else the linear-shaped arrow pointing towards the right. The movement of energy in the ecosystem is forward-moving which is generated by the autotrophs and when consumed by the heterotrophs moves through them and another organism as they are preyed on.

Nicole came out of the elevator in her apartment
buliding. She ran to the curb
and held up her arm to hail a taxi. when she hopped in,she
said please take me to 345
45th street.
you infer that:

Answers

You can infer that...

d. Nicole lives in a large city.

Which of the following is true about science?
It reflects personal opinions.
It is durable because it is tested.
It does not change.
It can be disproven by philosophy.

Answers

Hi!

The best choice here is going to be that science is durable because it is tested. When you experiment and test something extensively, it improves the factual support and reliability.

In return, this makes whatever thing you are setting out to prove or disprove much more durable.

Hopefully, this helps! =)
Final answer:

Science is an objective, evidence-based discipline that encourages testing, making it durable. It is an ever-evolving field that changes based on new data and discoveries. Scientific theories or facts cannot be disproven by philosophy alone as they require empirical evidence.

Explanation:

Science is an empirical discipline, meaning it is based on making observations and conducting experiments to collect data. It does not reflect personal opinions, but rather strives for objectivity. In fact, the scientific method encourages testing and retesting of theories or hypotheses. This makes science durable because it relies on a body of evidence that withstands rigorous scrutiny. It is also dynamic, constantly evolving and perfecting itself in the light of new data, meaning that science does change over time. While science and philosophy can inform one another, a scientific fact or theory cannot be disproven by philosophy alone because scientific claims require empirical evidence for validation.

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X-rays _____.

were discovered by accident

have no uses today

reduced infection after surgery

were invented by the British Army

Answers

X-rays were discovered by accident (by Wilhelm Rontgen).

Final answer:

X-rays were discovered by accident when Wilhelm Röntgen found that they could pass through soft tissue but not denser bone, leading to breakthroughs in medical imaging. During World War I, Marie Curie advocated the use of mobile X-ray units for diagnosing soldiers. Radiology, the use of X-rays in medicine, remains a widely used diagnostic tool.

Explanation:

X-rays were discovered by accident by the German physicist Wilhelm Röntgen in 1895. The discovery occurred while Röntgen was experimenting with electrical currents and noticed that a certain invisible ray could pass through human tissue but would leave the shadow of bones on a screen coated with a metal compound. The ability of X-rays to pass through soft body tissue and be absorbed by denser materials like bone enabled, for the first time, doctors to see inside a living patient without surgery.

During World War I, X-ray technology became particularly useful in the medical field. Mobile X-ray units, which were advocated by Madame Marie Curie, greatly aided military doctors. These units were deployed to diagnose injured soldiers, improving medical care and enabling more effective treatments, such as the optimized removal of embedded bullets.

Furthermore, the use of X-rays in medicine, which is known as radiology, has become a central tool in diagnostics. Due to its relative cost-effectiveness compared to more sophisticated technologies, X-ray usage is widespread and extensive in medical diagnostics to this day.

The universe currently opperates under _______ laws which are predictable.
1. Physical
2. People's
3. Artificial

Answers

option 1 is the correct one bub
Final answer:

The universe operates under physical laws which are universal. These laws govern every interaction and particle in the universe. People's laws and artificial laws are human constructs and don't influence the physics of the universe.

Explanation:

The universe currently operates under physical laws which are predictable. These physical laws, such as those of gravitation, thermodynamics, and quantum mechanics, govern the behavior of every interaction and particle in the universe. These laws are tested and confirmed through systematic observation and experimentation.

People's laws or artificial laws are human concepts and don't directly influence the physical reality of the universe. Physical laws are universal and still apply, regardless of human interaction or perception. That's why option 1 - Physical laws is the most accurate.

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Quick, please!!!!
Which physical evidence supports the theory that all continents were once together and have separated over time?

Common marine animal fossils found in various continents
Matching coastlines of Africa and South America
That most earthquakes occur along a plate boundary
Oceanic ridge near a divergent plate boundary

Answers

To be completely honest, I think all of them, in a way, support the theory.
The common animals show that the animals were spread out over all the land, making it joined
The coastlines matching show they were once joined
the earthquakes only happen in boundaries, where the countries were joined before
I'm not so sure about the last one, sorry

Now it is your turn. Be sure to design an experiment that you can conduct with materials you have on hand or that you can acquire easily. You will need to complete the experiment, recording observations and data. You will submit your assignment in a lab report.

Sample topics to experiment with include:

1.What affect will adding soap to water have on surface tension?
2.How do different materials affect capillary action?
3.How does adding salt affect the freezing point of water?
4.How does temperature change affect water's cohesion?
5.How does temperature change affect surface tension?



Answers

Final answer:

The experiment, which involves exploring how the addition of salt affects the freezing point of water, involves the principles of Physics and firsthand observation. You will need to document each step, observation, and conclusion in your lab report.

Explanation:

The experiments mentioned in your question primarily deal with principles of Physics, particularly those connected to fluid dynamics and thermodynamics. I will take the third experiment, how adding salt affects freezing point of water, as an example.

For the experiment, you will need water, salt, a freezer, a thermometer and a cup. Start by filling the cup with water and noting the freezing temperature without any salt. Repeat the experiment but this time, dissolve a spoonful of salt in the water and measure the freezing temperature again. In general, salt lowers the freezing point of water, a principle called 'Freezing Point Depression'.

Your lab report should document every step of the experiment, your observations, the measurements recorded, and your conclusions based on these observations. Don't forget to discuss any discrepancies or surprises, including potential errors or shortcomings in the experimental setup.

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Explain the ecological impact of a decline in phytoplankton by providing examples from the organization through the ecosystem levels of organism

Answers

Phytoplankton are small photosynthetic organisms that live water bodies. Decline in the levels of phytoplankton in any ecosystem can be detrimental. These organisms build the oxygen content of the water and is food to other organisms. Phytoplankton are fed on by zooplankton which are then fed on by fish larvae which are fed on by numerous predators. 

A decline in phytoplankton populations affects the entire marine food web, leading to food shortages for all organisms up the food chain and impacting global oxygen production. Human activities like overfishing and climate change exacerbate these effects, potentially causing the collapse of fisheries and disrupting marine ecosystems.

The ecological impact of a decline in phytoplankton can be profound, as they are a critical part of the marine food web. Phytoplankton are considered the primary producers in ocean ecosystems, creating organic compounds from sunlight and nutrients which support the entire food chain. The complex food web relies on phytoplankton to feed zooplankton, which in turn, are consumed by small predators such as shrimp and krill. These small predators are essential food sources for larger marine animals including fish, birds, and mammals. If phytoplankton populations decrease, this leads to a food shortage that cascades through the food chain, causing declines in populations at all levels, from zooplankton to apex predators. Moreover, the loss of phytoplankton can affect global oxygen levels, as they contribute significantly to the Earth's oxygen through photosynthesis.

The depletion of whale populations due to whaling, coupled with overfishing of smaller fish species, exacerbates this problem, as whales play a role in nutrient cycling which supports plankton growth. Human activities, such as overfishing and contributing to climate change, have a ripple effect that impacts energy cycling in marine ecosystems, potentially leading to the collapse of fisheries and disruptions to the balance of marine life.

Which best examples why a wood-burning fireplace represents an open system.
A. Because the ashes have to be swept away
B. Because a fire requires oxygen from the atmosphere to burn
C. Because they can be used for cooking
D. Because they are not all made out of brick

Answers

I think it's B, I'm sorry if it's wrong

This pedigree chart tracks the inheritance of a recessive trait that is not sex-linked. Based on the information in the chart, which of the following statements is true?

This pedigree chart shows three generations. The individuals are numbered from left to right, starting at the top left of the chart. Squares represent males and circles represent females. If the symbol is gray, that individual exhibits the recessive trait. If the symbol is white, the individual exhibits the dominant trait. On the first row there are two couples mated together. The first couple is made up of individuals #1 (recessive) and #2 (dominant). They have four offspring on the second row that all exhibit dominant traits: #5 (dominant), #6 (dominant), #7 (dominant), and #8 (dominant). The second couple in Generation #1 is made up of individual #3 (dominant) and individual #4 (dominant). They have three offspring in Generation 2: #9 (dominant), #10 (recessive), and #11 (dominant). Individual #8 from the first family and individual #9 from the second family mated together and produced three offspring in Generation 3. These offspring are #12 (recessive), #13 (dominant), and #14 (recessive).

A. Individual #11 must be homozygous for the recessive trait.
B. Individuals #3 and #4 must be heterozygous for the trait.
C. Individual #2 must be heterozygous dominant for the trait.
D. Individual #9 must be homozygous dominant for the trait.

Answers

Answer: The answer is B good sir, have a nice day :)

Individuals #3 and #4 must be heterozygous for the trait is TRUE.

An organism that is heterozygous for a trait has two different alleles for that trait. Individual who is heterozygous for a genomic marker has two different versions of that marker.

What is pedigree analysis?The study of an inherited trait in a group of related individuals to determine the pattern and characteristics of the trait, including its mode of inheritance, age of onset, and phenotypic variability.Human pedigree analysis can be used to establish the probability of a child having a particular disorder or condition.

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what are the three types of passive transport

Answers

diffusion, osmosis, and facilitated diffusion.

Final answer:

The three main kinds of passive transport, all of which involve movement without cellular energy, are diffusion, osmosis, and facilitated diffusion.

Explanation:

Passive transport is a critical biological process where small molecules or ions move across the cell membrane without the use of cellular energy. The three types of passive transport are:

Diffusion, which is the random movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.Osmosis, a specific type of diffusion exclusive to water molecules. Water moves through a semipermeable membrane from a less concentrated solution into a more concentrated one to balance solute concentrations on both sides of the membrane.Facilitated diffusion, where specific transport proteins help move substances across the cell membrane. These substances often include ions or molecules that are too large or too polar to pass through the membrane by simple diffusion.

This overview does not require energy input by the cell, distinguishing it from active transport mechanisms, like pump transport, which does require energy usually in the form of ATP.

11) A bowling ball and a soccer ball are about the same size and volume. Which is more dense the soccer ball or the bowling ball and why?

Answers

bowling ball it has more mass.

Answer:

Bowling ball.

Explanation:

Density of any object may be defined as the mass of an objects per unit the volume covered by the object. The formula to calculate density is mass/ volume.

A bowling ball and a soccer ball both has same volume and size. The density of bowling ball is is higher than soccer ball because the bowling ball has the larger mass than soccer ball. Density of an object is directly proportional to its mass. Hence, the bowling ball has higher density.

Thus, the answer is bowling ball.

What kind of model would you use to represent the human heart

Answers

You would use a Physical Model

What is an observation?

Question 1 options:

A)
A question asked by a scientist


B)
When a person reads something


C)
Anything that uses graphs and charts


D)
Information that is gathered by the five senses

Answers

It is the last one, letter D.
I think it’s d because a observation by google says gaining information

is Hemoglobin built by carbohydrates, lipids, proteins or nucleic acids?

Answers

Lipids? I think? Don't trust me on this one. That's my guess.

They are built by Nucleic acids
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