How do simple organisms exchange substances?

Answers

Answer 1

Answer:

A simple, unicellular organism (consisting of one cell) can rely on diffusion to move substances into and out of the cell. Its surface area is large compared to its volume , so nutrients and other substances can pass quickly through the membrane and around its 'body'.


Related Questions

A pure substance containing only one kind of blank hurry

Answers

Answer:

elements

Explanation:

The new Hazard Communication Standards provide teachers and students the right to __________ chemical hazards.

Answers

The new Hazard Communication Standards provide teachers and students the right to manipulate chemical hazards.

Chemical hazards are non-biological substances that can cause damage to health. These are used in different enterprises, companies, school, universities and laboratories for different purposes such as cleaning, disinfection, scientific experiments, among others. When handling them, employees are exposed to them and are vulnerable to harm from these chemicals.  

There are many types of hazardous chemicals to be wary of, such as:

Carcinogens NeurotoxinsAcids Systemic toxins Asmogens Silica dust Lead

In the workplace, exposure to these substances represents a real occupational hazard and there must be regulations to ensure that they are safe to handle.

The Occupational Safety and Health Administration (OSHA) is the agency of the U.S. Department of Labor which determined the Hazard Communication Standards. This is a document with the necessary information to study the hazards of the chemical substances used by different employees in the companies, so that they are aware of the dangers of these substances. These employees have the right to know exactly what compounds they handle and the risks involved in their use as well as the precautions and care to be taken.

Therefore, by having these safety standards in place in schools and universities, teachers and students have the possibility and the right to handle chemical hazards safely to be able to conduct the class normally and learn what is necessary.

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Based on the cell theory, which of the following is true?
O All cells are too small to be seen.
O All living things are made of cells.
OSmall organisms have more cells than large organisms.
Large organisms have larger cells than small organisms.

Answers

Answer:

all living things are made of cells

Answer:

all living things are made of cells

Explanation:

The first part of the cell theory states that all living things are made up of cells. Anything that’s alive, from bacteria to plants to humans, is composed of cells. And what are cells? The literal definition is a cell is a group of organelles surrounded by a thin membrane.

ayudaa por fa es para mañana
teniendo en cuenta la lectura uno de los métodos más rápidos económicos y eficaces para eliminar las bacterias del agua es la
A. desinfección
B. esterilización
C. cloración
D. inmunización

Answers

La respirate Es C. Cloración

What are australopiths, how many groups are there, and what do they date to? Which one is derived and therefore not part of our direct evolutionary line?

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Answer and Explanation:

Australopithecines were a group of ancestral animals that were very similar to chimpanzees, but had common characteristics with humans, which is something normal, when we think that these animals are one of the ancestors of human beings. These animals walked on two legs, like humans, but they had very small brains and teeth that were bigger and heavier than those of humans. There were eight groups of australopithecines and they date from 8 million to 1.5 million years ago.

Among these groups, it is believed that Australopithecus afarensis is a group that has no direct ancestry with humans, being a group that did not thrive during the evolutionary process.

the results of an experiment can be validated through replication true or false​

Answers

Answer:

True through replication

Answer:

this is true

Explanation:

What process takes place in these nodules? 1 A. Photosynthesis B. Decomposition C. Nitrogen fixation D. Water absorption ​

Answers

Answer:

I THINK the answer is Water absorption

Explanation:

:)

According to the theory of natural selection, why are some individuals more likely than others to survive and reproduce?

1Points
A
Some individuals pass on to their offspring new characteristics they have acquired during their lifetimes.

B
Some individuals are better adapted to exist in their environment than others are.

C
Some individuals do not pass on to their offspring new characteristics they have acquired during their lifetimes.

D
Some individuals tend to produce fewer offspring than others in the same environment.

Answers

I’m pretty sure that it’s B.

In meiosis, sister kinetochores are attached to the same pole of the cell during meiosis I, and sister chromatid cohesion is released during anaphase II. What would be the likely result if sister kinetochores were attached to different poles of the cell during meiosis I and sister chromatid cohesion was released during anaphase I

Answers

Answer:

sister chromatids would migrate to opposite poles in anaphase I

Explanation:

Kinetochores are multiprotein structures that establish the attachment of spindle microtubules to the chromatids during cell division (either mitosis or meiosis). Sister chromatid cohesion at the centromeres refers to the mechanism by which sister chromatids are paired and held together during meiosis I. This process (sister chromatid cohesion) is fundamental to ensure the correct orientation of chromatids on the spindle microtubules and their subsequent segregation in meiosis II. The fusion of sister kinetochores in meiosis I underlies sister chromatid cohesion during this stage of the cell division, thereby their disruption or destruction of sister chromatid cohesion would lead to separation and segregation of sister chromatids to opposite poles of the cell in anaphase I.

how many types does the larva of silkworm moult?​

Answers

Answer:

there are 6 lava of silkworm moult.

Answer:

Silkworms will undergo molting up to four times since they grow so much before becoming an adult.

Explanation:

Các tuyến nào sau đây được gọi là các tuyến pha?

Answers

Answer:

tuyến tụy, tuyến sinh dục

Explanation:

What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source? A. Angiosperms evolved flowers, which could catch rainwater, reducing the dependence on ground water sources. B. Vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources. C. Gymnosperms evolved seeds, which they could alter to need less water. D. Non vascular plants evolved chloroplasts to allow them to get energy from the sun, instead of relying on water for energy.

Answers

Answer:

B

Explanation:

In the given scenario, vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources. The correct option is B.

What is vascular plants?

A plant that basically have a specialized conducting system which entails xylem and phloem, the tracheophyte is referred to as vascular plants.

Vascular plants are widely recognized as tracheophytes. Vascular tissues are xylem and phloem for conduction of water and food respectively.

They allow plants to grow in height in the air without even drying out. Vascular plants also have roots, stems, and leaves.

Seedless vascular plants are the ones which have vascular tissue but though do not produce seeds as well as flowers.

In such vascular plants, for instance, ferns and horsetails, the plants multiplies using haploid and unicellular spores on the place of seeds.

Thus, the correct option is B.

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Dental plaque Group of answer choices anchors teeth to their bony sockets. is calcified organic matter on the surface of teeth. protects teeth from bacteria-induced tooth decay. forms a bone-like protective layer. consists of food particles trapped in a sticky matrix.

Answers

Explanation:

dental plaque consists of food particles trapped in a sticky matrix.

I hope this helps

Modern plant-breeding techniques (artificial selection in action) have reduced genetic variability in many of our most commercially valuable plants. To most people, that would generate a shrug. However, a biology student that has studied evolution understands the problem with this. Briefly explain why there is an issue with this.

Answers

Answer:

There is an issue with the artificial selection.

Explanation:

There is an issue with this artificial selection because the genetic variability is reduced when we do again and again the artificial selection. In the artificial selection, the selected genes are combined with the one another and does not allow natural fusion or combination of genes that is responsible for the genetic variability in the organisms so that's why we can say that this artificial selection is an issue that reduce genetic variability.

The prevalence of CRE infections in health care settings has increased significantly in recent years, in part because these organisms are able to share plasmid-encoded resistance genes. Which method of horizontal gene transfer is most likely responsible for transfer of the plasmid between bacteria

Answers

Answer:

Bacterial conjugation

Explanation:

Carbapenem-resistant Enterobacterales (CRE) are different types of bacteria that lead to infections in healthcare settings. Moreover, a plasmid is a small piece of DNA that can replicate independently from the bacterial chromosome. Bacterial conjugation is a type of horizontal gene transfer by which plasmids are transferred from one bacterium referred to as 'donor' into another called 'recipient' by sex pili. Plasmid transfer is unidirectional and depends on physical contact between bacterial cells. In this case, it is expected that this type of DNA transport mechanism occurs among patients occupying the same rooms in healthcare settings.

cual es el productor del que más consumidores primarios se alimentan

Answers

Answer:

please let us know what you mean in English

Answer:

Plantas o Algas son unos productos que consumen.

Explanation:

The sugar in RNA is, the sugar in DNA is
deoxyribose; ribose
glucose; deoxyribose
ribose; glucose
ribose; deoxyribose

Answers

Answer:

Last choice: ribose; deoxyribose

Explanation:

Ribose (otherwise known as D-ribose) is a sugar found in RNA (ribonucleic acid). It alternates with phosphate groups to create the “backbone” of the RNA polymer.

Deoxyribose (sugar in DNA) is one of the three components of nucleotides for DNA. Each nucleotide consists of a phosphate group and a nitrogenous base:  adenine, thymine, cytosine, guanine, and deoxyribose.

Glucose is a type of sugar which is a common and crucial energy source in living organisms and is often a component in various carbohydrates. Plants can create glucose by going through a process called photosynthesis, and once it's done with the process, they use the glucose (sugar) as their food for energy.

Which tools would I use to heat 400 mL of water

Answers

Answer:

ruler, graduated cylinder

Explanation:

7. To test a new voice feature in a cockpit design a flight simulator was used. The simulator was programmed to
give visual readings of flight information, or to give visual and auditory (voice) readings of flight information. All
test pilots were put through a simulated emergency landing procedure, but were randomly assigned to the
visual, or visual and auditory conditions. Flight experts rated each pilot's performance in the simulator on a
scale of 1 (very poor) to 10 (excellent).

Answers

The variables in the simulation procedure carried out are :

Independent variable = Simulator Independent variable = Simulator Dependent variable = Performance

The dependent and independent variables are critical in any experimental study as both variables encompasses the variable to be measured and the variables manipulated in other to obtain the variable to be measured.

Independent variable : This is also called the predictor variable which is tweaked in other to obtain changes in the measured or dependent variable. In the experiment performed, the simulator is the independent variable has it has different visual or visual and auditory conditions capable of causing changes to the performance rating.

The dependent variable is the variable being measured in an experiment. In this case, it is PERFORMANCE. It is the measured output obtained as the the pilot are being rated based on the simulation.

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C What is the important of making prority

Answers

Answer:

Priorities will guide you in life's decisions and keep you on track. Most importantly, priorities will give you the confidence to say "no." They help you identify what's truly needed in your life, versus what someone else feels is important.

Answer:

The importance of it are Establishing priorities is necessary in order to complete everything that needs to be done. Prioritization is important because it with allow you to give your attention to tasks that are important and urgent so that you can later focus on lower priority tasks.

explain the systemic circulation ​

Answers

Explanation:

Systemic circulation is also called general circulation in these circulation the oxygenated blood from the aorta moves towards the whole body (to each and every organ).

The aorta is divided into ascending and descending aorta. The ascending aorta supplies oxygenated blood to ascending or upper body parts and descending aorta supplies oxygenated blood to descending or downward body parts.

Hope it helps you! \(^ᴥ^)/

hola, ecesito para ahora,
cual es la diferencia entre la alergia a la leche y le intolerancia a la lactosa?
gracias

Answers

Answer:

Una alergia verdadera a la leche difiere de la intolerancia a las proteínas de la leche o de la intolerancia a la lactosa. A diferencia de una alergia a la leche, en la intolerancia no interviene el sistema inmunológico.

Explanation:

3. What is one thing that can be done to help improve areas that produce a lot of runoff?

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Answer: hi, im here to help :3

so, you can either use plants, use pesticides and fertilizers less often or the one thing i know is consider a rain barrel.

describe the process of digestion in a person who had beans for lunch time​

Answers

Answer:

The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.

Please help me with this on the picture

Answers

Fossil fuels produce no CO2 when burned

HELP
In humans, ventilation, digestion, and blood flow are important biological processes. Explain the relationship between the structure of tissues or organs and one of these processes.

Answers

Answer:

I am assuming the question is asking how do the processes relate to one another.

Explanation:

Ventilation happens in the lungs, where carbon dioxide and oxygen are exchanged in the alveoli. This is done via cappilaries that surround the alveoli. Cappilaries are small blood vessels, which are collecitelvy part of the blood flow system (circulation) of the body. In reguards to the digestion, there are capillaries in the vili (which are tiny finger-like structures) so that they can pick up the nutrients during digestion. Another way blood flow and digestion are connected is because the stomach is a muscle, thus is moves and requires energy. That energy comes from the oxygen and nutrients that is supplied by the blood. These are just some examples.

InformationHow did
the discovery of isotopes disprove one part of
Dalton's atomic theory

Answers

Answer: Because Daltons theory states all atoms of a given element are identical in mass and properties.

Explanation:

The discovery of isotopes demonstrated that atoms of the same element can have different atomic weights, implying that atoms of the same element are not identical in every way. 

What is Dalton's atomic theory?

Dalton's atomic theory postulated that matter is made up of indivisible particles known as atoms, and that atoms of the same element are all identical and cannot be created or destroyed.

Compounds are formed by the simple combination of atoms into compound atoms.

Dalton, John Experiments with gases became possible at the turn of the nineteenth century, prompting John Dalton to propose a modern theory of the atom based on certain assumptions.

Dalton's theory is debunked. This is because Dalton's theory states that all matter is made up of identical, indivisible, and indestructible atoms. Isotopes have the same element but a different number of neutrons.

Thus, this way, the discovery of isotopes disprove one part of Dalton's atomic theory.

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blood flows through many small tubes if the dialyser. what is the significance of this​

Answers

Answer:

Blood flows through smaller tubes to mimic the actual rate of blood flow in the body. This makes the dialysis machne safe for the body. Th dialysis machine can also adjust pressure in accordance of a persons blood pressure

Explanation:

will mark Brainliest!!!!!! To corroborate information is to?



find evidence that opposes a scientific position.



find evidence that supports a scientific position.



find evidence that proves a scientific position.


find evidence that disproves a scientific position.

Answers

It’s to find evidence that supports a scientific position! It’s actually in the definition, if you search up corroborate! Really hope this helps ya, and have a great rest of your day.

The most correct option as to what corroborating information means would be to find evidence that supports a scientific position.

Corroborate is an English word that means 'to agree with' or 'give credence to'.

Hence:

Finding evidence that opposes a scientific position is a wrong option because that is the complete opposite of what corroborate means. Finding evidence that approves a scientific position is also a wrong option because corroborating a statement does not necessarily make the statement to be scientifically correct.Finding evidence that disproves a scientific position is also incorrect. Corroborate neither translates to approve nor disprove,

Therefore, the correct option that clearly explains what corroborate means in the context of science is to find evidence that supports a scientific position.

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Diane Dodd raised different fruit fly populations on different food sources. She found that after about 40 generations the evolution of reproductive isolation was under way. The mechanism of evolution responsible for this was Group of answer choices

Answers

Answer:

Natural selection.

Explanation:

Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.

Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.

In this scenario, the mechanism of evolution responsible for this was natural selection because after about 40 generations the evolution of reproductive isolation was under way for the fruit fly. Thus, the more the offsprings that are reproduced by the parent organism, the more likely are they to survive.

Additionally, there is a better chance of having good or beneficial traits being passed from the parent organism to her offsprings.

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PLZ HELP ME Which of these is an example of an example factor which affects the earths climate? A - Decrease in the suns energy.B - Warm and cold ocean currents. C - Increase in atmospheric dioxide. D - Release of dust during volcanic eruption What led to the Shah's removal from power in Iran?B. his liberal views of the Islamic faithA. his modern western attitudesD. none of the aboveC. A & B Crimson Tide Music Academy offers lessons in playing a wide range of musical instruments. The unadjusted trial balance as of December 31, 2021, appears below. December 31 is the company's fiscal year-end. Accounts Debits Credits Cash $ 10,300 Accounts Receivable 9,500 Supplies 2,000 Prepaid Rent 7,200 Equipment 90,000 Accumulated Depreciation $ 12,000 Accounts Payable 7,700 Salaries Payable 0 Interest Payable 0 Utilities Payable 0 Notes Payable 20,000 Common Stock 45,000 Retained Earnings 19,000 Service Revenue 42,200 Salaries Expense 24,500 Interest Expense 0 Rent Expense 0 Supplies Expense 0 Utilities Expense 2,400 Depreciation Expense 0 Totals $ 145,900 $ 145,900Information necessary to prepare the year-end adjusting entries appears below. a. Depreciation of equipment for the year is $6,000. b. Accrued salaries at year-end should be $2,100. c. Crimson Tide borrows $20,000 on September 1, 2018. The principal is due to be repaid in four years. Interest is payable each August 31 at an annual rate of 12%. d. Unused supplies at year-end total $700. Crimson Tide debits Supplies at the time supplies are purchased. e. Crimson Tide opens a second studio by paying for one year of rent in advance on April 1, 2018, for $7,200 ($600 per month) debiting Prepaid Rent. f. Unpaid utilities for December total $200. Required:1) Enter the unadjusted balances from the trial balance and post the adjusting entries to the T-accounts, and post the closing entries to the T-accounts.2) prepare an adjusted trial balance.3a ) prepare an income statement for the year end december 31,2018.3b) prepare a statement of sharholders equity for the year ended decmber 31,2018.3c) prepare a classified balance sheet for the year ended december 31, 2018.4) record the closing entries.5) prepare a post-closing trial balance. Find of factor of 72 Write the standard form of the equation of the circle with center (8,1) that passes through the point (6,7) Which kind of bond would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA)? Include the following:A list of all 10 questions you would ask the financial manager of the chosen organization.A rationale of 50100 words for each question. Consider the nearly circular orbit of Earth around the Sun as seen by a distant observer standing in the plane of the orbit. What is the effective "spring constant" of this simple harmonic motion?Express your answer to three significant digits and include the appropriate units. Which of the following is an example of a producer?1. tree2. hawk3.rabbit4. mushroom what correction in spelling of the pronoun you would use in place of the highlighted words in the sentence: Email the report to Wendy and Alma's lawyer Write equation of a line in slope intercept form with the given information p=(1,2) m=4 If the mean of a given dataset is42 and the standard deviation is4, where will a majority of thedata lie? Rhythm in the visual arts is created by contrast of elements. Why is the alpine tundra important to protect what is the complete ionic equation between the reaction of sodium carbonate and calcium hydroxide to form a precipitate yes, i have. He ..........( plant) pink and yellow roses. While driving on a rural road, your right wheels run off the pavement. You should hold the steering wheel firmly and when does the little black cat start purring ?why Someone plz explains this to me The product of the roots of the equation x2 + x=2 is:0-201