Oxygen enters a cell via:
Active transport
Diffusion
Filtration
Osmosis

Answers

Answer 1
Diffusion

Hope this helps
Answer 2

Answer:

Oxygen and carbon dioxide move across cell membranes via simple diffusion, a process that requires no energy input and is driven by differences in concentration on either side of the cell membrane.

Explanation:

Simple diffusion is responsible for the spread of an air freshener through a room, or of a few drops of dye to eventually turn a glass of water a uniform color. Molecules naturally disperse from areas of higher concentration to lower concentration.

As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. It can do this easily because the oxygen molecule (O2) is very small and has no charge or polarity. The oxygen is used up rapidly by mitochondria. This rapid consumption causes oxygen to constantly move into the cell from the blood.

The mitochondria creates carbon dioxide (CO2) as a waste product of cellular respiration (the process that makes energy for your body). Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell. It too is small and uncharged so it can pass through cell membranes easily.

These movements require no energy (in the form of ATP) on behalf of the cell.


Related Questions

Mudarabah bie mal normaly covers and the Rabbel A. Supporting contract Moxiach Ressicted \( 50 \% \) a. Participation based Mutang Pestrkied \( 300 \% \) C. supporting comact Munwadah Mutaqh 04 a None

Answers

Mudarabah is participation-based contract and it is divided by Mutlaqah and restricted and the rabbul mal normally covers 100% losses, option B is correct.

Mudarabah is a participation-based contract commonly used in Islamic finance. It involves two parties: the entrepreneur (mudarib) and the capital provider (rabbul mal). The mudarabah contract is divided into the entrepreneur's effort and the capital contributed by the rabbul mal. The entrepreneur utilizes their skills and expertise to manage the business, while the rabbul mal provides the funds.

In this contract, the entrepreneur receives a share of the profits generated from the business, as agreed upon in advance, while the rabbul mal receives a predetermined portion of the profits as a return on their investment. However, the rabbul mal generally covers all the losses incurred in the business, unless the entrepreneur's negligence or misconduct is proven, option B is correct.

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The correct question is:

Mudarabah is ____________ contract and it is divided by ____________ and ____________ and the rabbul mal normally covers ____________ losses

A. Supporting; Mutlaqah; Ressicted; 50%

B. Participation-based; Mutlaqah; Restricted; 100%

C. Supporting; Musharkah; Mutlaqah; 0%

D. None of the above

If you have an object with the density of 3.45 g/ml, and a mass of 45g, what is the volume of the object?

Answers

Answer:

13 mL

Explanation:

What is one of the functions of nucleic acids

Answers

Answer:

The functions of nucleic acids have to do with the storage and expression of genetic information.

Explanation:

Does anyone know this ?

Does anyone know this ?

Answers

he said the seven year olds had been a big part in a coma and had made the effort for a bruse and I was not going

Determine the allele frequency (Give your answers as 2-decimal number e.g. 0.05): In a population of 500 individuals 120 have genotype AA 400 have genotype Aa 80 have genotype aa What is the frequency of allele A?

Answers

The frequency of allele A is 0.55.

To calculate the frequency of allele A, we first need to determine the number of copies of allele A in the population. Since each individual has two copies of the gene, we can calculate the number of copies of allele A by multiplying the frequency of the Aa genotype by 1 (since one of the alleles in this genotype is A) and adding it to the frequency of the AA genotype multiplied by 2 (since both alleles in this genotype are A).

So, the number of copies of allele A = (2 x 120) + 400 = 640

Then, we can calculate the frequency of allele A by dividing the number of copies of allele A by the total number of alleles in the population, which is 2 x 500 = 1000. So, the frequency of allele A = 640/1000 = 0.64.

However, since the question asks for the frequency of allele A specifically (not Aa or aa), we need to divide this frequency by 2 (since each individual has 2 alleles) to get the frequency of allele A in the population. So, the frequency of allele A = 0.64/2 = 0.55.

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Write down the hormones secreted by Gonads with one function of each

Answers

Answer:

The gonads (the testes in males and ovaries in females) are responsible for the production of steroid hormones, such as testosterone, estrogen, and progesterone.

Explanation:

The hormones secreted by the Gonads are estrogen and progesterone in females, while testosterone, androstenedione, and inhibin in males.

What are Gonads?

Gonads may be defined as the male and female reproductive organs. It includes testes in males and ovaries in females. These organs are essential for the reproduction process.

The function of each gonadal hormone is as follows:

Estrogen: It is responsible for the maturation and growth of the vagina and uterus.Progesterone: It is responsible for regulating the alterations in the uterus at the time of the menstrual cycle. Testosterone: It is responsible for the growth of bones, muscles, body hairs, etc. Inhibin: It is responsible for the regulation and development of sperm cells. Androstenedione: It is responsible for monitoring the level of estrogen and testosterone in the body of a human.

Therefore, it is well described above.

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the punnett square on p. 70 of your lab manual shows the genotypes of two parents for trait r. use this punnett square to answer the questions in this exercise. trait r is the mendelian trait in humans for tongue rolling. the allele for the ability to roll the tongue (r) is dominant over the allele for the inability to roll the tongue (r). what is the mother's genotype? group of answer choices

Answers

The genotypes of two parents for trait r is the mendelian trait in humans for tongue rolling. the allele for the ability to roll the tongue (r) is dominant over the allele for the inability to roll the tongue (r). The mother's genotype The mother is heterozygous (Rr) for the tongue-rolling trait.

There are two main types of genotypes that is  homozygous and heterozygous. If an organism is homozygous for a gene, referred that they inherit two of the same versions of the gene. If an organism has a heterozygous genotype, referred that they inherit two different versions of a gene.

Genotype referred to the genetic makeup of an organism which described about an organism's complete set of genes. It is used to refer to the  variant forms of a genes that are carried by an organism. The ability to roll the tongue is dominant over the allele for the inability to roll the tongue.

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Mosses are an example of which of the following?
decomposers
heterotrophs
autotrophs
detritovores
primary consumers

Answers

Answer:

mosses are autotrophs

Explanation:

-

Hola me pueden ayudar es urgente para hoy les doy Coronita.
1. Hacer una historieta sin dibujos y con diálogos de el experimento de Francesco Redi puso a prueba la teoría de la generación espontanea.

Answers

Answer:

Making a cartoon without drawings and with dialogues of Francesco Redi's experiment put the theory of spontaneous generation to the test.

what's is different about the digestive tract of the earthworm when compared to the salamander.

Answers

Answer:

The digestive tract of the earthworm and the salamander are similar in some ways, but they also have some differences. Both animals have a simple, linear digestive tract that consists of the mouth, esophagus, crop, gizzard, and intestine. However, the earthworm has a smaller and simpler digestive tract than the salamander.

One of the main differences between the digestive tracts of the earthworm and the salamander is the presence of glands. The salamander has several glands in its digestive tract, including the salivary glands, liver, and pancreas, which produce digestive enzymes and hormones that help to break down food and absorb nutrients. In contrast, the earthworm does not have any glands in its digestive tract, and it relies on the mechanical grinding action of its gizzard to break down food.

Another difference between the digestive tracts of the earthworm and the salamander is the presence of a stomach. The salamander has a muscular stomach that is used to store and churn food, which helps to break it down and mix it with digestive enzymes. The earthworm, on the other hand, does not have a stomach, and it does not have the ability to store food for extended periods of time.

Overall, the digestive tract of the earthworm is smaller and simpler than that of the salamander, and it lacks some of the specialized structures and functions that are found in the salamander's digestive tract.

Explanation:

Lateral meristem meaning

Answers

Answer:

Secondary meristems, or lateral meristems, are responsible for secondary growth, or an increase in the girth and thickness of the stem. Meristems are crucial for wound healing because they regenerate from other cells in damaged tissues.

OAmalOHopeO

what is most likely the cause of this difference from the rest of the population

Answers

Answer:

Gene mutation is most likely the cause of this difference from the rest of the population. Log in for more information.

Explanation:

CAN I GET BRAINLIEST

Wheat has flowers similar to those in Fig. 5.1, but reproduces by self-pollination. Explain the consequences of self-pollination for a population of plants.

Answers

Answer:

The transfer of mature pollen grain from anther of the flower to the stigma of the same flower of the same [species  is called self pollination.

Generally, the transfer of pollen grains by wind,animals,and water  to stigmas is called pollination. It is a means of vegetative propagation which ensures reproduction.

Therefore during self pollination, the same genes are distributed  from one generation to another. Thus genetic purity is ensured. It also ensured reproductive success. because there is little chance of the pollen grain getting lost in transit. It is also certain  a particular plant would always breed true.

Additionally it prevent  the process of transfer of genes in some transgenic crops( rice, maize) where through genetic engineering some genes are introduced in their genome.

The only negative effect is lack of genetic diversity. Therefore after a period of time the plants get  weak and prone to diseases and infection. Because of poor resistant from lack of variation.

Explanation:

What causes the Pacific Ring of Fire to have so many volcanoes.

Answers

The Ring of Fire is the result of plate tectonics. Much of the volcanic activity occurs along subduction zones, which are convergent plate boundaries where two tectonic plates come together. The heavier plate is shoved (or subducted) under the other plate.

can you be anorexic and bulimic at the same time

Answers

Yes, it is possible for an individual to have symptoms and behaviors characteristic of both anorexia nervosa and bulimia nervosa at the same time. This is referred to as "anorexia bulimia" or "bulimarexia."

Anorexia nervosa is an eating disorder characterized by an intense fear of gaining weight and a distorted body image, leading to severe food restriction and significant weight loss. Bulimia nervosa, on the other hand, involves recurrent episodes of binge eating followed by compensatory behaviors such as self-induced vomiting, excessive exercise, or the misuse of laxatives or diuretics to prevent weight gain.

In cases of anorexia bulimia, individuals may exhibit restrictive eating patterns, severe food limitation, excessive exercise, and an intense fear of weight gain associated with anorexia nervosa. At the same time, they may also engage in episodes of binge eating followed by purging behaviors similar to those seen in bulimia nervosa. These individuals may cycle between the restrictive behaviors of anorexia and the binge-eating and purging behaviors of bulimia.

It's important to note that anorexia bulimia is not an official diagnostic category recognized by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). However, individuals can exhibit symptoms of both disorders concurrently, and it is crucial for those experiencing these symptoms to seek professional help for proper assessment and treatment.

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Which best describes the role of communication in scientific investigations?
O Communication can help identify good scientific questions to further investigate.
O Communication is not necessary once the data are collected because the scientists can d
themselves.
O Communication should not be used in planning the experimental design because the scien
ideas.
O Communication is important because the scientists need to convince other researchers not to challenge their results

Answers

Answer:

Communication can help identify good scientific questions to further investigate.

Explanation:

What is a predicted impact of global warming on marine life?


decrease in biodiversity caused by decreased pH of seawater

increase in biodiversity caused by increased pH of seawater

increase in biodiversity caused by increased amount of ozone in seawater

decrease in biodiversity caused by decreased amount of ozone in seawater

Answers

decrease in biodiversity caused by decreased pH of seawater is the correct option. thus, option A is correct.

What is marine life?

The plants, animals, and other species that exist in salt water found in the sea, ocean, or brackish water found in coastal estuaries are referred to as marine life, sea life, or ocean life. Marine life has a fundamental impact on the planet's nature.

More carbon dioxide is evaporating into the ocean as a result of human-driven increases in atmospheric carbon dioxide concentrations. Currently, the ocean has an average pH of 8.1, which is basic (or alkaline), but when more CO2 is absorbed, the pH drops and the ocean turns more acidic which results in a decrease in biodiversity.

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abnormal overgrowth of certain bacteria in the vagina, know as ?

Answers

Abnormal overgrowth of certain bacteria in the vagina is known as bacterial vaginosis (BV). BV is a common condition in which the normal balance of bacteria in the vagina is disrupted and replaced by an overgrowth of certain bacteria. This overgrowth can cause a thin, grayish-white discharge, a fishy odor, and/or burning and itching.

It is important to note that BV is not an infection, but an imbalance of the normal bacteria found in the vagina. This imbalance can be caused by many things, such as using scented soaps and bubble baths, douching, or having multiple sexual partners. BV is usually treated with antibiotics, and can be managed with lifestyle changes, such as avoiding scented soaps and bubble baths and limiting sexual partners.

In conclusion, bacterial vaginosis (BV) is an abnormal overgrowth of certain bacteria in the vagina. It is not an infection, but an imbalance of the normal bacteria in the vagina, which can be caused by a variety of factors. BV is usually treated with antibiotics and can be managed with lifestyle changes.

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Some organisms are very successful because
Select one:
a. they can reproduce rapidly
b. they can reproduce both asexually and sexually
c. they are varied genetically
d. the species population is large.

Answers

I think the answer is A.

How can organisms adapt to their environments? What does
"Survival of the Fittest" mean?

Answers

Answer:

The most adapted to its environment

Explanation:

Survival of the fittest means that the organism is the most adapted to its environment. Therefore the organism can survive through different conditions.


HELP ME PLEASEE forget

HELP ME PLEASEE forget

Answers

Answer:

WAVE #3

Explanation:

Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers). They also have the lowest frequencies, from about 3,000 cycles per second, or 3 kilohertz, up to about 300 billion hertz, or 300 gigahertz

Answer:

C

Explanation:

The wavelength is the distance between the peak of one wave and the peak of a second wave. So 3 has the longest wavelength, and 2 has the shortest.

the amount of air in the lungs after a normal exhale is called the ______________ .

Answers

Answer:

Expiratory reserve volume

Segmented worms with bodies are _____.leechesscallopsearthwormsnautiluspolychaeta

Answers

Annelida are worms whose bodies are divided into similar rings or segments. they are classified into three groups, Polychaeta, Oligochaetes, Hirudine, and Achaea.

Polychaeta is the bigger group in the Annelida, and everyone has equal segments.

Leeches are segmented parasitic predatory worms in the Hirudinea subclass, in the Annelida phylum.

The scallop is a name of various species and does not belong to the Annelida phylum.

The earthworm is a terrestrial invertebrate that belongs to the Annelida Phylum.

Nautilus is from the Mollusca phylum and does not belong to the Annelida.

The subphylum Polychaeta, the leaches, and the earthworm are the ones that match the description of segmented worms

where would you expect dissolved oxygen to be at higher levels in the water and available for fish? 1) in ponds 2) in fresh water lakes 3) in shallow fast moving streams 4) in deep slow moving streams

Answers

Dissolved oxygen levels are expected to be higher and more available for fish in shallow fast moving streams and in freshwater lakes.

Shallow fast-moving streams (option 3) typically have higher levels of dissolved oxygen. The fast-moving water promotes oxygenation through aeration and turbulence, allowing for the efficient exchange of gases with the atmosphere. The movement of water helps to mix and distribute oxygen, making it more accessible to fish and other aquatic organisms. Additionally, the presence of riffles and cascades in fast-moving streams further enhances oxygenation.

Freshwater lakes (option 2) also tend to have higher levels of dissolved oxygen. Lakes receive oxygen through a combination of sources, including atmospheric diffusion and oxygen produced by aquatic plants and algae through photosynthesis. The mixing action caused by wind and wave action further helps to distribute oxygen throughout the water column. Additionally, oxygen-rich surface water can penetrate deeper into the lake during periods of turnover or mixing events, further benefiting the fish population.

On the other hand, ponds (option 1) and deep slow-moving streams (option 4) may have lower levels of dissolved oxygen compared to the aforementioned environments. Ponds can be more stagnant with limited water movement, leading to lower oxygenation. Deep slow-moving streams may experience reduced aeration and less mixing, resulting in lower oxygen levels.

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ASAP please cell division

ASAP please cell division

Answers

The cytokinesis occurs, resulting in the division of the cytoplasm and the formation of two daughter cells.

When answering questions, it is important to be factually accurate, professional, and friendly. One should be concise and avoid providing extraneous amounts of detail. It is also important to use relevant terms in the answer.

Here is an example answer to the question, "ASAP please cell division in 140 words":Cell division is a vital process that occurs in living organisms. It is necessary for growth, repair, and reproduction. There are two types of cell division, namely mitosis and meiosis.

Mitosis is the type of cell division that occurs in somatic cells and results in the production of two identical daughter cells. Meiosis is the type of cell division that occurs in reproductive cells and results in the production of four genetically diverse daughter cells.

Cell division consists of several stages, including interphase, prophase, metaphase, anaphase, and telophase. During interphase, the cell grows and replicates its DNA. During prophase, the DNA condenses into chromosomes,

and the nuclear membrane breaks down. During metaphase, the chromosomes align along the equator of the cell. During anaphase, the sister chromatids separate and move towards opposite poles of the cell.

During telophase, the nuclear membrane reforms, and the chromosomes decondense.

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Geraniums flower in the spring, when they receive less than 12 hours of light. They also flower in the summer, when they receive more than 12 hours of light. What type of plant are geraniums? A. Day-neutral plant B. Dormant plant C. Short-day plant D. Long-day plant​

Answers

Answer:

A. Day-neutral plant

Hope Helps!:)

Fish give off ammonia, a base, as a waste. How does this
affect the pH of the water in an aquarium? What can be
done to correct he problem?

Answers

Answer:High pH levels (9-14) can harm fish by denaturing cellular membranes. Changes in pH can also affect aquatic life indirectly by altering other aspects of water chemistry. Low pH levels accelerate the release of metals from rocks or sediments in the stream.

Explanation:

Suppose most of the rabbits in an area suddenly die from a disease. What would happen to the populations of the rabbits' preators and competitors?

Answers

Answer:  Populations of both predators and competitors would increase. Populations of predators would increase, and those of competitors would decrease.  Space increased, competition decreased, and bison and elk populations increased.

Explanation: Hope this helped :D

They felt wrong if they didn’t

what would most likely happen if an error occurred when RNA was recieving coding information

Answers

Answer:

Proteins won't be made or are made improperly. If the mutations occur in the gametes, the offspring's DNA will be affected positively, negatively, or neutrally.

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please help meeeeeeeeeeeeeeeee

Answers

Divergent boundaries pull away from eachother and convergent boundaries run into eachother
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