The property of the cell membrane that allows some molecules to pass and not others is called

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Answer 1
Answer:  "selective permeability" .
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Related Questions

After being medicated for anxiety, a client says to a nurse, "i guess you are too busy to stay with me." how should the nurse respond?

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The nurse should be honest with the patient, they should not make promises to stay if they can't fulfil them. The nurse should try and find someone else who can sit with the patient if they can't as if they are anxious they will get more anxious and distressed if they are left alone.

Brekkies is releasing a new type of breakfast cereal that combines different grains and flavors. since brekkies is releasing a new product in the industry, brekkies will

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they will make money cause its so GOOD

The likely result in the given scenario above is that the Brekkies will likely find or locate information in regards about the breakfast cereal demands from the consumers with the use of databases online in a way that will help them know if their product will be a hit and if it will sell.

why is nitrogen so important to plants

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Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins.
is because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (photosynthesis). It is also a major component of amino acids(protein), is the building blocks of proteins.

Briefly describe what happens during the light dependent reactions of photosynthesis

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The light dependent reactions produce Oxygen Gas and convert ADP and NADP+ Into the energy carries ATP and NADPH.

Light energy is converted into chemical energy by light-dependent reactions. The goal of photosynthesis's light-dependent reactions is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then put to use in light-independent reactions.

What is photosynthesis ?

Photosynthesis is a process that plants and other organisms used to convert light energy into chemical energy that can then be released to fuel the organism's activities via cellular respiration.

The light-dependent reaction is a photochemical reaction that occurs in chloroplast thylakoid membranes and converts light energy into adenosine triphosphate (ATP) and nicotinamide adenine dinucleotide phosphate(NADPH).

The photosynthesis process is divided into two stages: light-dependent reactions and the Calvin cycle. Chlorophyll absorbs energy from sunlight and converts it into chemical energy via the light-dependent reactions that occur at the thylakoid membrane.

Thus,  The goal of photosynthesis's light-dependent reactions is to collect energy from the sun and break down water molecules to produce ATP and NADPH.

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Photosynthesis uses which ingredients to produce cellular fuel

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Respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy. This energy is used to fuel growth and all of the normal cellular functions. Carbon dioxide and water are formed as by-products of respiration.
The two main ones is water and sunlight. Hope this helped.

Traditionally, it is taught that the neuron is the functional unit of the nervous system. what do some neuroscientists suggest is a more accurate functional unit? why?

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Neural networks, because even the most basic functions require circuits of neurons rather than just a single neuron.

Sometimes, in response to irritants, mucous cells secrete excess mucus. What symptoms might this produce if it occurred in the (a) digestive tract or (b) respiratory passageway? What is the purpose of the mucus production in this situation. Give an example to help support your answer.

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The secretion of excess mucous in the digestive tract may result in loose stools or diarrhea. The purpose of the excess secretions is to lubricate the digestive tract so that food can pass through during digestion with greater ease. The secretion of excess mucous in the respiratory passageway could result in increased coughing as the body attempts to expel the mucous (and the offending irritants) from the lungs and bronchial tubes. This occurs when either physical debris (such as inhaled dust or dirt particles) or pathogens (such as bacteria and viruses) have entered the respiratory passageway and the body attempts to remove them; an example is the common cold.
Final answer:

Excess mucus production in the digestive tract can cause nausea and abdominal discomfort, while in the respiratory passageway it may lead to coughing and a runny nose. Mucus serves to protect the body, trapping pathogens and foreign particles. A typical example of this protective mechanism in action is the increased mucus seen during a common cold.

Explanation:

When mucous cells secrete excess mucus in response to irritants, it can lead to different symptoms depending on the location within the body. If this occurs in the (a) digestive tract, symptoms might include nausea, vomiting, abdominal pain, and diarrhea as the body attempts to expel the irritant. If it occurs in the (b) respiratory passageway, symptoms can include coughing, sneezing, a runny nose, and difficulty breathing due to the obstruction the excess mucus creates.

The purpose of mucus production in this situation is to protect the body by trapping pathogens and other foreign particles. For instance, in the respiratory tract, the mucociliary escalator sweeps mucus and trapped pathogens upward towards the throat to be swallowed or expectorated. Similarly, in the gastrointestinal tract, mucus serves as a lubricant and also contains antimicrobial agents that help protect the lining from irritation and infection.

An example that supports the protective role of mucus production is the common cold. During a cold, the body produces more mucus in the respiratory tract to trap and remove the cold virus. This results in the typical symptoms of a stuffed-up nose and the need to clear one's throat frequently.

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The membrane that lines the lumenal surfaces of the digestive, respiratory, urinary, and reproductive tracts consists of

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The membrane that lines the lumenal surfaces of the digestive, respiratory, urinary, and reproductive tracts consists of epithelium and lamina propria.

What is cell membrane?

Cell membrane is defined as a wall that differentiate and protect the inner structure of cell from the outer environment. The main function of cell membrane is to keep away the toxic material out of the cell.

The cell membrane contain channels as well as receptors that give permission to only selective permeable membrane to enter into the cell.

Respiratory system is defined as the system that performs the function of gaseous exchange.During this process fresh air is inhaled and waste material in form of carbon dioxide is released out.

The main components of respiratory system are lungs, blood vessels, trachea and nassal passage. By combining all these components respiratory system of the body performs it's function properly.

Therefore, The membrane that lines the lumenal surfaces of the digestive, respiratory, urinary, and reproductive tracts consists of epithelium and lamina propria.

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Final answer:

The mucous membranes line the lumenal surfaces of several body tracts, with mucus secreted by exocrine glands providing protective and antimicrobial functions.

Explanation:

The membrane that lines the lumenal surfaces of the digestive, respiratory, urinary, and reproductive tracts consists of mucous membranes. These membranes are an assembly of connective and epithelial tissues known as mucosae. They are essential for protecting the internal layers of these tracts and serve as a barrier against the external environment. The mucous membranes are coated with mucus, which is secreted by exocrine glands within the epithelial tissue. This mucus is not only a lubricant but also serves to trap debris, particulate matter, and microbes, providing an additional antimicrobial barrier. The underlying connective tissue layer, called the lamina propria, provides support for the epithelial layer, allowing it to maintain its integrity against physical and biological stresses.

Which of the following statements is true of meiosis?
a. It divides one haploid cell into four diploid cells.
b. It divides one haploid cell into two diploid cells.
c. It divides one diploid cell into two haploid cells.
d. It divides one diploid cell into four haploid cells.

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the answer is D. It divides one diploid cell into four haploid cells. 
During the meiosis process the chromosomes o the parents will be reduced by half and produce them into four  gamete cells.
This process is really necessary for the production of sperm and egg cells needed in sexual reproduction

Answer: the answer to this question would be d because mesios are a dilpoild and theris one dilpoild and it will didvide it into a haploid in pairs of fours.

Not breastfeeding baby what happens later

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They eventually lose the nutrients needed

Final answer:

Not breastfeeding a baby means missing out on the vital nutrients, immunoglobulins, and other health benefits provided by breast milk. Sudden cessation of breastfeeding can cause physical effects in the mother, like breast engorgement and leakage, due to a disrupted supply-demand relationship. Without resumption, milk production will usually cease within about a week.

Explanation:

When a baby is not breastfed, they do not receive the benefits provided by breast milk. Suckling stimulates the production of prolactin which leads to milk production in the mammary glands. Oxytocin is released as well, which aids in milk let-down. This process ensures that the baby receives a balanced supply of nutrients tailored to its development phase, including colostrum, which is rich in immunoglobulins necessary for the infant's immune system. Additionally, breast milk contains components that help the infant's digestive system expel meconium and clear bilirubin. If a mother stops breastfeeding suddenly, prolactin and oxytocin levels can decrease, leading to breast engorgement and leakage, mirroring the experiences in the initial weeks following birth. The engorgement occurs because the supply-demand relationship has been disrupted. Although a lactating person can produce milk for years, if breastfeeding is not resumed within approximately one week, the remaining milk will be reabsorbed, and in most cases, no more will be produced.

Which of the following is not a feature of echinoderms?

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What are the choices ?

body segments         is the answer

What term is used to describe the healthiest lake?

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term  used to describe the healthiest lake  is oligotrophic

Answer: Eutrophic lakes

Explanation:

Eutrophic lakes are the lakes which are in high nutrient content. The high nutrient content supports the large diversity of aquatic plants, algae and aquatic animals. The substrate of the lake is soft and muddy. This provides the suitable environment for the survival of the organisms. The organisms are generally tolerant to the low oxygen and warm temperatures.

On the basis of the above description, eutrophic lakes can be a term used to describe the healthiest lake.

Name the different levels of body organization

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Atom, Molecule, Organelle, Cell, Tissue, Organ, Organ System, Organism, Population, Community, Ecosystem, Biome, Biosphere

Compulsive exercise would most likely be present in which eating disorder?

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The answer to this question would be: anorexia athletica

Anorexia athletica or sports anorexia or hypergymnastica is an eating disorder that involves a compulsive exercise behavior. In this case, the patient will try to exercise because of guilt. The exercise hoped will remove the excess food that he/she eats 

The correct answer is Anorexia Nervosa.

Compulsive exercise is a common feature in individuals with Anorexia Nervosa. This behavior is often driven by an intense fear of gaining weight or becoming fat, and it is used as a means to control body shape and weight. People with Anorexia Nervosa may engage in excessive physical activity despite being underweight, injured, or in poor physical health. This compulsive exercise can exacerbate the health risks associated with the disorder, including cardiac complications, osteoporosis, and muscle wasting.

 While compulsive exercise can also be present in other eating disorders such as Bulimia Nervosa or Eating Disorder Not Otherwise Specified (EDNOS), it is most characteristic of Anorexia Nervosa due to the relentless pursuit of thinness and the restrictive eating patterns associated with the disorder. It is important to note that not all individuals with Anorexia Nervosa will exhibit compulsive exercise, but it is a common and concerning symptom when present.

A food handler has finished grilling a chicken breast for a sandwich. what should the food handler do before touching the chicken lettuce tomato and bun?

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A food handler placing a chicken breast on the grill and then placing tomato and lettuce on a bun is an example of cross-contamination.  

Prior to touching the chicken, lettuce, tomato, and bun, the food handler should wash his hands and make sure that he or she is wearing the right equipment at the time of handling the food. This can be a mask, gloves, and goggles if necessary to prevent any contamination of the food.


A food handler should wash his/her hands then wear protective clothing

and gloves before touching the chicken lettuce tomato and bun.

Food handlers are usually trained to handle food in a hygienic way. This

helps to prevent contamination of the food with pathogenic micro-organisms.

The protective clothes and gloves should be worn when handling food and

before touching the chicken lettuce tomato and bun to keep everyone safe

and healthy.

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After eating, _________ signals the hypothalamus to suppress appetite.

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After eating, leptin signals the hypothalamus to suppress appetite. 

The primary __________ cortex contains a map of the body based not on the size of body parts, but on the complexity and precision of movement in the body parts.

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Hello!
The correct answer should be the motor cortex!
Hope this helps! :)

Answer:

Motor

Explanation:

The primary motor cortex is located in the dorsal part of the frontal lobe.This region is mainly responsible for the planning and execution of the body movements along with other associated areas such as supplementary motor areas, posterior parietal cortex, etc.It is considered as the prime region for controlling the complexity and precision of the movement of the various body parts.

It represents the type of cell structures found in cam plants

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Need more information to answer this question. 

However, an example of a cam plant is a cactus. They have CO2 -carbon dioxide- to produce acids. It stores the CO2 at night so it can be used during the day because cam plants are in extreme hot conditions. They release it during the day and it's formed in the Calvin cycle during photosynthesis to make glucose. 

Over evolutionary time, photosynthesis has, in effect, introduced challenges to itself by producing an oxygen atmosphere because

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In the process of photosynthesis, carbon dioxide is taken from the atmosphere and oxygen is realased. But now with the evolution, the atmosphere has much more oxygen than carbon dioxide. So the first step of absorbing carbon dioxide itself has been challenged by the process of photosynthesis.

which doesn't change the shape of a cell: (isotonic solution, hypotonic solution, or hypertonic solution)

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isotonic solution. it means that the same is on the outside as it is inside

Isotonic solution doesn't change the shape of a cell. So, the correct option is A.

What is Solution?

A solution is defined as a special type of homogeneous mixture made up of two or more substances. In such a mixture, a solute is a substance dissolved in another substance which is also called as a solvent.

An isotonic solution is a type of solution that has the same osmolarity, or solute concentration, as another solution. If these two solutions are separated by a semipermeable membrane, water will flow from each solution in equal parts to the other solution. This solution doesn't change the shape of a cell.

Thus, Isotonic solution doesn't change the shape of a cell. So, the correct option is A.

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Which vessels contain deoxygenated blood?

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The inferior vena cava carries... Veins carry the deoxygenated blood from different parts of the body to the heart. Among the veins, only pulmonary vein carries oxygenated blood (from lungs to left atrium). Among the 5 main vessels of our body, veins carry deoxygenated blood.

The three main types of pollutants found in agricultural runoff are

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The three main types of pollutants found in agricultural runoff are:
animal wastes, biocides, fertilizers

Hope this helps!

What kind of snake is gray or black with a yellow stripe arpund its neck?

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The Diadophius Punctatus, or more commonly referred to as Ringneck snake.

Cells that secrete the organic osteoid of bony matrix are called:

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Cells that secrete the organic osteoid of bony matrix are called: osteoblasts

In what way are mitochondria and chloroplasts similar to some prokaryotes cells

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Even though both organelles are found in eukaryotic cells, both mitochondria and chloroplast have characteristics often found in prokaryotic cells. These prokaryotic cell characteristics include: an enclosed double membrane, circular DNA, and bacteria-like ribosomes.
Final answer:

Mitochondria and chloroplasts resemble prokaryotes in several important ways, hinting at a possible endosymbiotic origin. This includes their independent division process similar to bacterial binary fission, the presence of their own DNA and ribosomes, and structural similarities in size and shape to bacteria.

Explanation:

Mitochondria and chloroplasts show several similarities to prokaryotes, which include size and the presence of their own DNA and ribosomes. Both mitochondria and chloroplasts divide independently by a process similar to binary fission in prokaryotes. This supports the theory known as the endosymbiotic theory, proposing that these organelles were once free-living prokaryotes.

Mitochondria, often referred to as the powerhouses of the cell, share traits with alpha-proteobacteria. They carry their own genomes that bear resemblances to bacterial DNA, hold special ribosomes and transfer RNAs mirroring those found in prokaryotes, and show minor differences in the universal genetic code.

On the other hand, chloroplasts, which play a key role in photosynthesis in plant cells, are thought to have originated from an endosymbiotic relationship with photosynthetic cyanobacteria. Like mitochondria, they also contain circular genomes and show structural similarities to bacteria in terms of size and shape.

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You are given an unknown cell to identify as a plant, animal, or bacteria cell. in a paragraph describe how you be able to use a compound microscope to identify what type of cell it is

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  The cells all have different qualities. 
A plant cell will have a cell wall (the others don't have these) and so it will be kept in a rigid shape, unlike the others which are free to be blobby. Inside a plant cell, there is also a vacuole containing cell sap. The others don't have this. Plant cells also have chloroplasts, which look similar to mitochondria on a diagram. Chloroplasts contain chlorophyll, and this is used for photosynthesis. 

A plant cell will have a cell wall and so it will be kept in a rigid shape, unlike the others which are free to be bloating. Inside a plant cell, there is also a vacuole containing cell sap. Plant cells also have chloroplasts, which look similar to mitochondria on a diagram. Chloroplasts contain chlorophyll, and this is used for photosynthesis.

What is photosynthesis?

The process by which green plants prepare there own food in the presence of sunlight is known as photosynthesis and during the process of photosynthesis heat energy converted into chemical energy and the whole process is done in order to plant prepare food.

The food web is also known as consumer consuming system. The main advantage of food web is the organism present on top or the organisms who belongs to higher trophic level can provide food or feed the organisms from lower trophic level or from other food chain.

Therefore,A plant cell will have a cell wall and so it will be kept in a rigid shape, unlike the others which are free to be bloating. Inside a plant cell, there is also a vacuole containing cell sap.

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The location or organism where disease-causing agents exist and maintain their ability for infection.

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It is the reservoir. It is the long haul host of a pathogen of an irresistible infection. Has regularly don't get the sickness conveyed by the pathogen, or it is conveyed as a subclinical disease as is asymptomatic and non-deadly. 

A reservoir is an irresistible specialist ordinarily lives and increases, on which it depends basically for survival, and where it replicates itself in such way that it can be transmitted to a vulnerable host.

During digestion, water is both added and removed. Which area of the digestive system removes water?

Answers

Answer:

Large intestine

Explanation:

Large intestine is the part of the digestive system that consists of cecum, the colon and the rectum. The undigested food enter from small intestine into large intestine. Function of large intestine is to absorb water, salts and vitamins from the undigested food. The undigested and unabsorbed substances form faeces and is stored in rectum till defaecation.

Answer:

Large Intestine

Explanation:

Water from the undigested food is removed by the large intestine. All the nutrients have been absorbed from the food before it reaches large intestine.

Large intestine removes water and make stool consistent enough so that it is easily removed.

There are three main parts of large intestine

a) Cecum - cecum has no major role in food digestion. It passes the food to the colon

b) Colon  - It has three sub parts

     i. the ascending colon - Bacteria in colon digest the remaining food

     ii. the transverse colon - It absorbs fluid and salts

     iii. the descending colon - hold the waste

c) rectum

Briefly describe what is meant by a pioneer species.

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A pioneer species is the first species to arrive at an environment after primary or secondary succession occurs. 

To maintain homeostasis what must follow the chemical decomposition of food for energy production?
A. removal of wastes
B. nervous impulses
C. muscle contractions
D. intake of water

Answers

A. removal of wastes
The answer is A. removal of wastes,
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