Is the cell an open or closed system? Explain your
answer using at least one example of a cell
organelle and its function

Answers

Answer 1

·         In an open system matter and energy can be transferred

·         In a closed system only energy can be exchanged

·         In an isolated system neither matter nor energy can be exchanged

·         The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system

·         As an open system the cell allows nutrients to enter the cell and waste products to exit the cell

·         The cell does this through the use of a semi-permeable membrane

·         It needs nutrients in the forms of glucose, ions and many other molecules.

·         The nutrients can come into the cell through either passive or active transport

·         In passive transport the nutrients naturally move from a higher concentration gradient to a concentration gradient.

·         During active transport the particle need to move against the concentration gradient. To do this the cell needs energy to transport the materials. The energy comes in the form of ATP.


Related Questions

Which statements describe the synapse? Select all that apply.

It carries information through electrical impulses to the cell body.
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body.
It is the gap between neurons.
It ensures that information travels in multiple directions.

Answers

Answer:

A

Synapse, also called neuronal junction,  its carries   of information through electric nerve impulses between two nerve cells (neuron)  or between a neuron and a gland or muscle cell (effector).

Answer:

A

C

E

Explanation:

I just took the quiz on edge

The celiac ganglion ________. Group of answer choices is located near the base of the superior mesenteric artery arises from the greater splanchnic nerve projects postganglionic fibers that innervate the small intestine and the kidney and urinary bladder arises from the lesser splanchnic nerve arises from the lumbar splanchnic nerve

Answers

Answer:

The correct answer is ''arises from the greater splanchnic nerve''

Explanation:

The greater splanchnic nerve or great adrenal nerve, originates in the thoracic sympathetic chain from vertebral levels T5 to T9 (T10). It runs over the bodies of the thoracic vertebrae and as it descends it becomes more anterior. It enters the abdomen crossing the diaphragmatic pillar and ends at the celiac plexus. The upper part of each celiac ganglion continues with the greater splanchnic nerve. The collateral or prevertebral ganglia innervate the abdominal and pelvic organs and viscera. The celiac ganglion receives preganglionic fibers from T5 to T12 and innervates the stomach, liver, pancreas, gallbladder, small intestine, spleen, and kidneys.

Which characteristics belong to a eukaryote?

is usually multicellular
contains a nucleus
contains one cell type
contains membrane-bound organelles

Answers

Answer:

all are correct... it all belongs to eukaryote

Answer:

[tex]{ \sf{ - \: is \: usually \: multicellular}} \\ { \sf{ - \: contains \: a \: nucleus}} \\ { \sf{ - \: contains \: one \: cell \: type}} \\ { \sf{ - \: contains \: membrane-bound \: organelles}}[/tex]

All the above is ✔

Which of the following is an
example of facilitated
diffusion?
A. liquid molecules colliding with one
another
B. reaching an equal amount of molecules on
both side of a membrane
C. red blood cells allowing glucose to move in
and out
D. cytoplasm keeping an organelle in place

Answers

Not 100% sure but I'm pretty sure it's C. red blood cells allowing glucose to move in and out.

PLEASE HELP ME
Show the importance of the inheritance of how steps in meiosis change chromosomes through one of these processes.

Background: Meiosis is the process used by sexually reproducing organisms and is made up of eight sub-steps or phases. During meiosis, chromosomes can be changed through crossing over and nondisjunction leading to changes in the inherited traits of offspring.

Answers

Meiosis is the process that occurs in sexually reproducing organisms in the sex cells of male and female organisms.

Variation occurs in an organism due to the process of crossing over which only occurs in meiosis in which the chromosomes between non-sister chromatids exchanged. Meiosis also causes genetic variation due to the process of recombination so in inheritance, meiosis has great importance and  impact on the shape and structure of organism.

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list and explain the advantages of 5 farming systems

Answers

https://agriinfo.in/benefits-or-advantages-of-integrated-farming-system-670/

1.Explain what makes a scientific experiment reliable. Be sure to include at least three reasons to support your answer.

2.During research, why is it important to use peer reviewed evidence when collecting background information during a scientific investigation?

Answers

An experiment is reliable when its repetition produce always the same result. In science, peer review is fundamental because this process ensures that there is not misleading data that may lead to erroneous results.

In sciences, reliability is a term used to evaluate the quality of research. Reliability refers to the probability that an experiment or result is correct, thereby preventing and mitigating failures over time.  

An experiment whose successive repetitions conduct the same result is 100% reliable.  

Three examples of reliability in science: the same measurement of the size of the leg of a spider. the observation of the same behavior of birds populations on different days and at different times of the day. the same byproducts from a given chemical reaction when an experiment is repeated two or more times.

Peer review is the most widely accepted process used to validate scientific data. This process (peer review) is fundamental to facilitate the growth of scientific knowledge.

During peer review, independent scientists assess the originality, reliability, and significance of a scientific work before its publication.

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Answer:

i hade this assesement i aced it but this is only one part of it there is more

Explanation:


3. Which of the following most accurately represents the various feeding relationships within an ecosystem?
O A. A biomass pyramid
O B. A food chain
O C. A feeding diagram
OD. A food web

Answers

Answer:

B- A food chain

Explanation:

This answer has been confirmed as correct and helpful

The founder effect occurs when Multiple Choice large groups of individuals leave their home population and establish new settlements, mating only among themselves. small groups of individuals leave their home population and establish new settlements, mating only among themselves. many members of a population die, resulting in a great loss of genetic diversity. many members of a population reproduce causing too much genetic diversity within the population. small groups of individuals leave their home population and join established settlements, and mating with natives.

Answers

Answer: small groups of individuals leave their home population and establish new settlements, mating only among themselves.

Explanation:

The founder effect is what happens when a small group of individuals leave their home population in order to establish new settlements. They will then mate only amongst themselves and colonize the area without mixing with the natives.

As a result of the founder effect, there is less genetic variation in the new population than in the home one because the smaller number of individuals who left would not possibly be able to carry all the genes in the home population. The only genes that would be passed on are those of the small individuals.

The sympathetic and parasympathetic nervous systems are both part of which division of the nervous system?

the central nervous system
the peripheral nervous system
the somatic nervous system
the autonomic nervous system

Answers

Answer:

The answer is D. The autonomic nervous system.

Answer:

(D): the autonomic nervous system

Explanation:

Got it right on edge! Good Luck <3

Which of the following is NOT true of enzyme activity? a. enzyme shape may change during catalysis b. the active site on an enzyme orients its substrate molecules, therby promoting interaction of their reactive parts c. all enzymes have an active site where substrates are temporarily bound d. each enzyme can catalyze a wide variety of different reactions

Answers

Answer:

D. Each enzyme can catalyze a wide variety of different reactions

Explanation:

Each enzyme can only catalyze a few, specific types of reactions.

Since enzymes and substrates are very specific to one another, enzymes cannot catalyze a wide variety of reactions.

If a substrate is not the correct one that fits in the enzyme's active site, a reaction will not occur.

So, each enzyme can only assist in a few reactions.

The correct answer is D. Each enzyme can catalyze a wide variety of different reactions

Which of the following is NOT true of the
muscular system?
A. They are connected to bones.
B. They allow voluntary movement.
C. They allow us to move.
D. They are connected by gap junctions.

Answers

I think the answer is D.

The one that is not true regarding muscular system is that they are connected by gap junction. The correct option is D.

What is gap junction?

Gap junctions are specialized intercellular connections that connect a wide variety of animal cell types.

They connect the cytoplasm of two cells directly, allowing molecules, ions, and electrical impulses to pass through a regulated gate between cells.

Location includes that the gap junctions can be found in a variety of locations throughout the body.

This includes epithelia (surface coverings of the body), nerves, cardiac (heart) muscle, and smooth muscle (such as that of the intestines). Their primary function is to coordinate the activity of neighboring cells.

Skeletal muscle cells lack gap junctions because they do not require them. Skeletal muscles are not made up of individual cells.

Thus, the correct option is D.

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which of the following describes the function of nucleic acids?

Answers

Answer:

A

Explanation:

DNA

Answer:

Option A

Explanation:

The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis

pls mark brainliest

The muscle weakness of myasthenia gravis results from loss of acetylcholine receptors in the end-plate membrane. the motor neuron action potential being too small to shock the muscle fibers. insufficient acetylcholine release from presynaptic vesicles. excessive acetylcholinesterase that destroys the neurotransmitter. All of the answers probably contribute to the muscle weakness.

Answers

Answer:

The correct answer is ''loss of acetylcholine receptors in the end-plate membrane.''

Explanation:

Myasthenia gravis represents a human autoimmune disease. The neuromuscular junction abnormalities that occur in this disease are due to antibody-mediated processes. A reduction in the number of functional acetylcholine receptors on the postsynaptic membrane was established to contribute to the physiological abnormalities of myasthenia gravis. The reduction in receptors is due to immunological alterations directed against the acetylcholine receptor. Normally, when acetylcholine binds to its receptor, it opens allowing the rapid entry of cations, especially sodium. With this, the depolarization of the postsynaptic region of the muscle fiber occurs. Although acetylcholine is normally released in myasthenia gravis, it is not capable of causing an action potential in the muscle sufficient to initiate or weaken contraction. In patients with myasthenia gravis, failure to activate muscles is responsible for myasthenic fatigue. Most patients have elevated serum titers of antireceptor antibodies, which in turn accelerate receptor degradation.

What is desertification?
a.
method of using desert land for agriculture
b.
the process of turning arable land into deserts
C.
drying up of stream beds and lakes
d.
the expansion of current deserts land areas

Answers

Answer:

B

Explanation:

I believe it's B because desertification is the process of land being turned into deserts due to many factors like animal grazing.

Desertification means the process of turning arable land into deserts, which is the second option. Desertification is a process in which agricultural land is affected the most, resulting in the land having fewer nutrients.

What is desertification?

Desertification is a process in which arable land is affected, and as a result, crop production is reduced. Desertification is the result of many factors, such as climate change, rapid urbanization, population growth, global warming, etc. The less water, nutrients, and microbes there are in the soil, the more likely it is that the land will become a desert.

Microbes in the soil become extinct as a result of climate change, causing crop patterns to shift and more land to become desert. Global warming causes temperatures to rise and many species to become extinct, exacerbating the problem.

Hence, desertification means the process of turning arable land into deserts, which is the second option (b).

Learn more about desertification here.

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Help!!!! Give a simple overview of the process of photosynthesis.

Answers

Answer:

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil.

Explanation:

This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.

Which of the following is true of living things that have prokaryotic cells when compared to living things that have eukaryotic cells?
They have many types of organelles.
They are types of plants.
O They are always larger than eukaryotic organisms.
They are always unicellular.

Answers

Answer:

the answer is the last one, they are always unicellular

Explanation:

Match the terms to their definition.
the number of individual
organisms born into a population in a given year

the movement of individuals out of a population

the number of individual organisms that die in a population in a given year

the movement of individuals into a population

Answers

Match the terms to their definition

The number of individual organisms born into a population in a given year is called birthrate.The movement of individuals out of a population is called emigration.The number of individual organisms that die in a population in a given year is called deathrate.The movement of individuals into a population is called immigration.

Hope it helps you! \(^ᴥ^)/

Answer:

1 4 3 2

Explanation:

Bacteria species live in the intestinal tracts of many types of mammals. These bacteria consume the partially digested food the mammal eats but also help to complete digestion of the food for mammals. This represents a ________________ relationship between species.

A) Predation
B) Mutualistic
C) Competitive
D) Commensalism

Answers

Answer:

B) Mutualistic

Explanation:

A mutualistic relationship is one of the symbiotic relationships that involves two organisms whose actions benefit one another. In mutualism both parties interact with one another and gain from one another.

According to this question, a bacteria species live in the intestinal tracts of many types of mammals. The bacteria helps the mammal to completely digest the food while the mammal provides shelter and food for the bacteria. This represents an example of MUTUALISTIC RELATIONSHIP.

Identify parts A and C.​

Answers

Answer:

A. Liver B. Stomach

Explanation:

Liver detoxifies chemicals and metabolize drugs, stomach mixes the food and grind it

A: Liver

C: Stomach

hope it helps!!!!

Structure of DNA:
Question 6
What is the function of DNA?
Select one:

To encode instructions for traits.


To help the cell move.


To store energy for the cell.


To protect the cell.

Answers

Answer:

My friend, the answer is to encode instructions for traits.

Which is defined as a cell structure made of DNA that gives all of the master instructions for the cell?
a. centromere
b. chromosome
c. allele
d. gene

Answers

Answer:

a chromosome is a cell structure made of DNA,which is found in the nucleus of a cell.

I hope this helps

what is photosynthesis?​

Answers

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Answer:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide,water and minerals

HELLLLLLLLLLP MEEEEEEEE PLS

THIS QUESTION IS NOT HARD BUT MY BRAIN DOESNT GET IT.
the last answer choice is blocked but it says
0 only sample 4​

Answers

Answer:

3 and 4

Explanation:

Both appear to be up river which mean they're coming DOWN to contaminate the uptake. If they're ahead of the uptake facility they're not going to show up in the water. I only know this because of City Skylines :)

The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that providing live copepods (2 mm long) and feeder fish (2 cm long) would satisfy the dietary needs of all of the organisms. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)

Answers

Answer:

The correct answer is - Biwalves and sponges.

Explanation:

Suspension feeders are the organisms that depend on, for the dietary needs or nutriton, materials suspended in the water. The materials that are suspended are living organisms such as phytoplankton and zooplankton.

Biwalves and sponges are suspended or filter feeders and not predators like other organisms so providing copepods will not complete their food requirement and they will starve to death.

The correct answer is - Biwalves and sponges.

A junction between neurons through which electrical signals pass through are known as _________.
A. Neurotransmitters
B. Axons
C. Myelin sheaths
D. Synapses
(answer: D)

Answers

Answer: Synapses

Explanation: I think this the answer

if i am correct.

What causes an ionic bond to form between sodium and chlorine?

Answers

Answer:

The loss of an electron

Explanation:When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na+), and the chlorine atoms each gain an electron to form anions (Cl−

Answer:

"Sodium has 1 electron in its outermost shell, and chlorine has 7 electrons. ... If sodium can transfer it's "spare" electron to chlorine, both atoms will satisfy their full outer shell requirements, and an ionic bond will be formed."

Explanation:

If an electric train moves south, which direction does the train smoke go?


answer with intelligence.​

Answers

no direction

because its electric so there is no smoke produced

if someone is smoking the it will move in south direction xD

A pesticide tolerance refers to the a. amount of a pesticide that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace. b. ability of the liver to detoxify a pesticide c. toxicity of the pesticide in the laboratory d. number of pests that are killed by a selected dose of the pesticide

Answers

Answer:

a. amount of a pesticide that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace.

Explanation:

Pesticides are chemical substances used to get rid of or kill pests that attack crops on farmlands. These pesticides, although help the farmer to get rid of his pest problem and likely have an increase in yield, are dangerous to human and animal health if consumed.

As set up by the Environmental Protection Agency (EPA), pesticide tolerance is the amount or quantity of pesticide chemical that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace.

Se podría afirmar que las aletas anteriores de las ballenas se pueden comparar con estructuras similares de organismos terrestres?

Answers

Answer:

Las aletas de una ballena y el brazo de un hombre son un ejemplo de órganos homólogos, porque la estructura ósea de las aletas de una ballena es parecida (homóloga) a la estructura ósea de nuestros brazos, debido a que ambas proceden del mismo origen embrionario pero se han modificado para desempeñar funciones ...

Other Questions
I need a 7 sentence summary on decision making A particular company's net sales, in billions, from 2008 to 2018 can be modeled by the expression t2 + 12t + 74, where t is the number of years since the end of 2008. What does the constant term of the expression represent in terms of the context? The company earned 74 billion dollars from 2008 to 2018. The company earned 12 billion dollars from 2008 to 2018. The company earned 74 billion dollars in 2008. The company earned 12 billion dollars in 2008. Why is the novel titled moneyball ? Select all the correct answers. Which two research options are examples of secondary sources? Select all the correct answers. Suppose a firm has an annual expenses of $170,000 in wages and salaries, $75,000 in materials, $60,000 in rental expense, and $5,000 in interest expense on capital. The owner-manager does not choose to pay himself, but he could receive income of $30,000 by working elsewhere. The firm earns revenues of $420,000 per year.1. What are the annual economic costs for the firm described above? $310,000. $320,000. $340,000. $400,000.2. What is the economic profit for the firm described above? $10,000. $20,000. Loss of $80,000. $80,000.3. To receive a normal profit the firm described above would have to: Reduce expenses by $10,000. Earn $80,000 more in revenue. Earn $80,000 less in revenue. Earn $310,000 more in revenue. I WILL GIVE BRAINLY!!! PLZ HALP!!! PLZ PUT EXPLINATION AS WELL SO IK YOUR CORRECT What characteristics do these words have in common? Select all that apply.halibut, flounder, tuna, troutfishdomesticatedfresh water Which event convinced American leaders to call the Grand Convention? A-(buc)=(A-b)u(A-c) 38. I use a cassette to practice listening skills. A cassette _______________________________________________________________________ 39. Im very keen on joining the rock concert next Sunday. Im looking _____________________________________________________________________ 42. Henrys success is his parents pride. Henrys parents are ________________________________________________________________ Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not. A number increased by 100% and decreased by 20% is x. what is the number ? NEEDED TODAY find the surface area of the prism. At the school carnival, Jade has a game booth with a spinner. The banner at her booth reads "80% chance of winning!" What is the chance that a player may not win? 20% 40% 50% Use the given conditions to write an equation for each line in point-slope form and slope-intercept form.Slope= 1/3, passing through the origin. Copy the problems onto your paper, mark the givens and prove the statements asked. b) CN = WN, C W.Prove RN = ON , G's employees each earned an average of $870 per week. A total of 600 vacation weeks earned in 2021 were not taken during 2021. Wage rates for employees rose by an average of 6 percent by the time vacations actually were taken in 2022. What is the amount of G's 2022 salaries expense related to 2021 vacation tim Assuming that a person going to community college can't afford to go to a four-year college is an example of a) a generalization. b) discrimination. O c) a stereotype. O d) tolerance. 200 pages.Question 2a) Fill in the blanks with appropriate words.i) The book consistsii) She is very sensitivecriticism.iii) He is duepromotion this month.iv) He is very particularwhat he wears.v) She is very popularher friends.vi) This is a storya purpose.vii) After the death of his father he was broughtviii) My friend backedof his promise.by his uncle. dical coding specialist23. This is a time of tremendous growth both in clinical knowledge base as well as professionaldevelopment.a. Residencyb. EMT trainingc. Medical schoold. Nursing school PLEASEEEE HELLLLP MEEEE