the cells of the alveoli produce a fatty substance known as ________.

Answers

Answer 1

A group of cells called granular pneumocytes, which are also present in the alveolar walls and are thought to help lower the surface tension of the alveoli, are among the other cells found there.

A number of the pulmonary extracellular matrix's constituent parts were formed in primary cultures of rat alveolar type II epithelial cells (granular pneumocytes). Two of these elements, type IV procollagen and fibronectin, were partially purified through fractionation by ion-exchange chromatography of radiolabeled protein released into the culture medium. Studies using radioimmune precipitation and affinity-purified antibodies verified the identification of these proteins by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Additionally, thrombospondin, a platelet alpha-granule protein that has recently been demonstrated to be released by endothelium and other cells with mesenchymal ancestry and may play a role in platelet aggregation, was isolated by elution from diethylaminoethylcellulose with 0.5 M NaCl.

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Related Questions

What is undigested food called?.

Answers

Undigested food is called "feces." Food is our fuel, and the nutrients it contains provide our cells with the substances and energy they need to function. 

However, food must first be broken down into manageable portions that the body can absorb and utilize. Arrives at the mouth. It exits the body as feces (poop) through the anus after passing through a lengthy tube. Food is broken down into tiny molecules along the route so that the body can absorb the nutrients it requires:

Amino acids must be extracted from protein.

Simple sugars are formed when starches break down.

Fatty acids and glycerol are formed when fats are broken down.

What exits the body as feces are the food waste components that the body is unable to utilize.

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which of the following fire-management methods reduces outbreaks of pests and diseases?A. preventing firesB. suppressing a fire altogether C. suppressing a fire at earl

Answers

Controlled burning is an ordinary practice used to acchieve different goals. Controlled burning is a fire-management methods that reduces outbreaks of pests and diseases. Option D is correct.

When talking about controlled burning, we are referring to the use of fire in an ecosystem by an expert team. Controlled fires must be done under specific meteorological conditions. These include temperature range and humidity, among others, to avoid fire expansion.

The expert team must control the fire dimensions and guide it to an end point, which might be a water flow, rocks, a road, among others.  

Some ecosystems depend on natural fires to remain stable. When the practice of controlled fire is well-done, it helps to restore these ecosystems' health and to avoid future damages. Controlled fire practice has several land management goals.

Ecosystem health restorationNutrient recycleInvasive species controlPestes / Plagues controlSpace for new native vegetationFlammable fuels reductionIncidental uncontrolled fires reduction

Among these goals, one of the followed goals is to control the outbreaks of pests and diseases.

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Full Question ;

which of the following fire-management methods reduces outbreaks of pests and diseases?

A. preventing fires

B. suppressing a fire altogether

C. suppressing a fire at early stages

D. controlled burning

crystallization process diagram​

Answers

Explanation:

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What if a human has more than 46 chromosomes?.

Answers

If a humans have more than 46 chromosomes, they will experience trisomies.

Chromosomes are fine thread-shaped structures that contain coiled DNA chains and are located in the cell nucleus. Chromosomes function as carriers of traits that can be passed on to their offspring. In humans, the number of chromosomes in a diploid cell is 46 or 23 pairs of chromosomes.

The chromosomes consist of 44 fruit chromosomes consisting of 22 pairs of body chromosomes and a pair of sex chromosomes. When someone has more than 46 chromosomes, they will experience a disorder called trisomy. Trisomy is a chromosomal disorder in which the cells in the body have three chromosomes. The cause of this excess chromosome is associated with pregnancy that occurs in women with an older age. Women who are pregnant at an old age have hormones that can affect cell division during embryonic development so as to produce extra chromosomes..

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how does one side of the dna strand compare with the other side of the dna strand?

Answers

The two sides of a DNA strand, also known as the "backbone," are composed of alternating sugar and phosphate molecules. The sugar in one strand is called deoxyribose and the other strand is composed of a base, which can be adenine, thymine, guanine, or cytosine. These bases form the "rungs" of the DNA ladder and are held together by hydrogen bonds, which connect the two strands of DNA. The sequence of these bases on one strand determines the complementary sequence of bases on the other strand, which is what allows for DNA replication and the transmission of genetic information.

the high speed signals that pass along the axons of nerve cells ia the function of ?

Answers

The high speed signals that pass along the axons of nerve cells is the function of A. Motor neuron; B. Sensory neuron; C. Relay neuron.

An electrical impulse in a neuron moves from the dendritic end to the axonal end. Chemicals released from one neuron's axonal end travel across the synapse and cause an electrical impulse of a similar nature to be produced in the dendrite of another neuron. A neuron transmits electrical impulses to muscle and gland cells in addition to other neurons.

A nerve impulse is a form of intercellular communication used by neurons. A nerve impulse, also known as an action potential, is primarily produced by electrical signals travelling along dendrites. Ions entering and exiting the cell cause the action potential.

From the dendritic end to the axonal end, a nerve impulse moves. A comparable electrical impulse is produced in a dendrite of another neuron when chemicals released from one neuron's axonal end cross the synapse. A neuron can provide electrical signals to muscle and gland cells in addition to other neurons.

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1.08 Lab: Natural Selection

Biological evolution is the process by which populations of organisms change over time. In this lab, you were able to observe how a population of peppered moths can change based on their environmental surroundings. Why do these types of changes/adaptations occur?

Answers

Answer: These types of changes/adaptations occur in order for the peppered moths to camouflage which gives them a higher chance of surviving and producing offspring.

Explanation: When the environment changed, due to pollution, the color of the moth population shifted because light-colored moths became easier to see so they were eaten more often. The darker moths were better camouflaged and more likely to survive and produce offspring. Organisms that survive have a better chance of reproducing so the population continues to grow.

Discuss how each mutation might affect the organism—would it be helpful, harmful, or have no effect on the organism’s ability to survive in the current environment?

Answers

Explanation:

Mutation effects can be beneficial, harmful or neutral (i.e, having no effect on the organism), depending on their context or location. Most non-neutral mutations are deleterious(harmful often in a subtle or unexpected way).

In general, the more base pairs that are affected by a mutation, the larger the effect of the mutation, and the larger the mutation's probability of being deleterious.

5 animals or more, mammals, adorable

Answers

Answer:

5 adorable mammals,

1. Dogs & Cats

2. Horses

3. Whales

4. Ferret

5. Cows

Mammals are a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young.

Do clams have hearts?.

Answers

yes! Clams have kidneys, a heart, a mouth and a stomach. They also have a nervous system.

nitrogen in the air
to
A
nitrate in soil
decay
B
decay
ammonium compounds
(b) Describe what happens at A, B and C
(6 marks)
(c) How are some plants like the garden pea able to survive in soil deficient in nitrates?
(3 marks)
(d) Describe how nitrates are leached from the soil (3 marks)
(e) Nitrogen is a vital component of every living organism. Give ONE importance of nitrogen
to animals and ONE importance to plants. (2 marks)

Answers

Remains of plant and animal waste as well as soil organic materials serve as a constant source of nitrogen recycling. Crops, gaseous loss, runoff, erosion, and leaching all deplete the soil's nitrogen content.

How long does nitrogen stay in the soil?Until there has been sufficient rainfall to cause crop removal or losses due to extremely high rainfall. Nitrogen can be lost after it has been integrated into the soil by crop removal, leaching, or denitrification. In order for plants to develop, crop removal is necessary.Due to the fact that plants require a lot of it, nitrogen is the nutrient that is used most frequently to restrict plant development (10-60 g per kg of plant mass, to be exact). Furthermore, it does not linger in the soil for very long. It instead winds up in areas where we don't want it: in groundwater, bodies of water, and even the atmosphere.

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competitive inhibition vs noncompetitive inhibition

Answers

Competitive inhibitors compete for the binding site in protein with the actual ligand, whereas non-competitive inhibitors do not.

A competitive inhibitor competes with the substrate for binding at the enzyme's active site. A noncompetitive inhibitor binds at a site other than the active site.

Competitive inhibition occurs when molecules that are very similar to the substrate molecules bind to the active site and prevent the actual substrate from binding. Penicillin, for example, is a competitive inhibitor that inhibits the active site of an enzyme used by many bacteria to build their cell... In repression.

Noncompetitive inhibition, a type of allosteric regulation, is a type of enzyme inhibition in which an inhibitor binds to an allosteric site, resulting in decreased enzyme efficacy. An allosteric site is simply one that differs from the active site—the location where the substrate binds.

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The neuroectoderm is induced by the notochord to form a _________. ___________

Answers

The neuroectoderm is induced by the notochord to form a neural; neural crest

What is neural?

Neural refers to the structures in the body related to the nervous system. This includes the brain, spinal cord, and nerves that run throughout the body. Neural tissue is composed of nerve cells (neurons) and supportive cells, such as glial cells, which provide a protective insulation for neurons. Neurons communicate with each other and other cells in the body through electrical and chemical signals. Neural networks are complex systems of interconnected neurons that work together to process and interpret information from the environment. Neural networks play an important role in controlling behavior, cognition, and emotion. They are also responsible for the regulation of motor functions, vision, and hearing.

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the gastrointestinal tract is _____________ft long

Answers

The gastrointestinal tract is 18 ft long.

The digestive system's path from the mouth to the anus is known as the gastrointestinal tract (GI tract, digestive tract, alimentary canal). All of the major digestive systems organs, such as the esophagus, stomach, and intestines, are located inside the GI tract in both humans and other animals.

The digestive system is made up of the liver, pancreas, and gallbladder as well as the gastrointestinal tract, commonly known as the GI tract or digestive tract. From the mouth to the anus, the GI tract is made up of several hollow organs connected by a protracted, twisted tube.

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Do leaves reflect or absorb light?.

Answers

The answer to "Do leaves reflect or absorb light" is leaves reflect and also absorb light. Because leaves аbsorbs аll wаvelengths of visible light except for green, which it reflects

А pigment is аny substаnce thаt аbsorbs light. The color of the pigment comes from the wаvelengths of light thаt аre reflected, or in other words, those wаvelengths not аbsorbed. Chlorophyll, the green pigment common to аll photosynthetic cells, аbsorbs аll wаvelengths of visible light except green, which it reflects. This is why plаnts аppeаr green to us. Blаck pigments аbsorb аll wаvelengths of visible light thаt strike them. White pigments reflect most of the wаvelengths striking them.

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direct gene activation involves a second-messenger system.

Answers

Direct gene activation is a mechanism by which hormones and other signaling molecules can directly bind to receptors on the DNA and activate or repress the transcription of specific genes

This type of gene regulation does not involve a second-messenger system. A second-messenger system is a cascade of reactions that amplifies and amplifies the signal generated by a hormone or other signaling molecule. This system is typically triggered by a hormone or other signaling molecule binding to a receptor on the cell membrane. This binding causes a conformational change in the receptor, which in turn activates an intracellular signaling cascade that ultimately leads to changes in gene expression or other cellular responses. Second messengers are small molecules like cAMP, cGMP, IP3, DAG, and Calcium that are produced in response to the binding of a hormone or other signaling molecule to the receptor.

Examples of second-messenger systems include the cyclic AMP (cAMP) system and the phosphoinositide system. These systems are used by hormones such as adrenaline, glucagon, and thyroid hormones to regulate gene expression and other cellular responses.

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Oberve: The rider have mae of 10 gram (top), 100 gram (middle), and 1 gram (bottom). Drag the 100-gram rider to 300. At thi poition it balance a 300-gram ma. What happen to the pointer?

Answers

The pointer goes down as the rider have masses of 10 gram (top), 100 gram (middle), and 1 gram (bottom) when drag the 100-gram rider to 300.

Levers of a particular kind are used to measure mass, or the quantity of substance in an item, such as a triple beam balance. On the measurement tray is placed a thing with an unknown mass. To balance the object, a group of sliding weights known as riders slide on beams on the opposite side of a fulcrum. The triple beam balance is a common tool for determining an object's mass. It consists of three beams, each of which has a single sliding weight whose size matches the notches on the notched scales of the beams.

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Which of the following methods of plant reproduction ensures the highest levels of genetic diversity?
A. layering
B. sexual reproduction
C. asexual reproduction
D. grafting

Answers

The answer is B. Sexual reproduction
The answer is B. Sexual Reproduction
Hope this helps you!

Why did Mendel selected garden pea for his experiment Class 12?.

Answers

Mendel researched pea ancestry (Pisum sativum). He decided on peas because they can be planted every year, have been used in comparable research, and are simple to grow.

Garden pea plants were Mendel's first choice for his tests because: Cultivating them is simple.

They have relatively brief life cycles.

Pea plant flowers have a bisexual sex pattern. These plants can do cross-pollination if it is applied to them in addition to self-pollination.

Through self-pollination, it is simple to produce pure or true-breeding plants.

It's easy to differentiate them correctly based on their qualities. As a result, it is simple to see the characteristics of this plant (for example; tall versus dwarf plant).

Large flowers are present on these plants. As a result, it is simple to remove the male anthers (anthers) to allow this flower to pollinate another.

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What value of n makes the number sentence, n times 9 = 0 true Answers ⬇️ below
-9
0
1
9

Answers

Answer: 0

9 x 0 = 0

The rest of these amount to 9, 81 and -81

Which process allows glycolysis to continue in the absence of oxygen?
A. Chemosynthesis
B. Photosystem 1
C. Cellular respiration
D. Fermentation

Answers

D. Fermentation, Glycolysis can proceed in the lack of oxygen thanks to fermentation.Fermentation is a crucial technique for producing ATP without the use of oxygen.

Inside the absence of oxygen, glycolysis continues through what process?

Pyruvate will go through a procedure known fermentation when oxygen is absent.The NADH + H+ produced glycolysis would be recirculated to NAD+ during fermentation, allowing glycolysis to proceed.NAD+ is oxidized during glycolysis to create NADH + H+.

What is the name of oxygen-free fermentation?

Anaerobic respiration is the term for respiration that occurs without oxygen.Another name for it is fermentation.Anaerobically breaking down glucose in this mechanism results in the production of two ATP.

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Now choose one of the resources used for energy production that you have studied in this lesson. Describe how the way humans use or obtain this resource might impact the natural resource you described in part A. If you don't think the natural resource in part A is affected, explain why.

Answers

In general, the way humans use or obtain any resource can have a significant impact on the natural resources.

For example, if the resource is fossil fuels such as coal, oil, and natural gas, the extraction and burning of these resources can lead to pollution of air, water, and soil. It also contributes to climate change and global warming, which can have severe impacts on various natural resources such as oceans, forests, and wildlife.

What is the energy production about?

Mining and drilling for fossil fuels can also lead to habitat destruction and fragmentation, which can negatively impact wildlife populations and biodiversity.

The production and transportation of these resources can also lead to spills and leaks, which can harm aquatic wildlife and their habitats.

In conclusion, the way humans use or obtain resources can have a significant impact on the natural resources, and it's important to consider the environmental impact of different energy production methods in order to make more sustainable choices.

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caught in or between hazards are related with excavations t or f

Answers

False -  caught in or between hazards are associated with excavations.

The hazards deemed to be the most dangerous are caught in or between hazards.

Important body parts are highly vulnerable to being cut or completely disabled in 'caught in or-between' hazards if proper safety measures are not used.In most cases, the only treatment available after an accident is amputation.As a result, it is absolutely necessary to plan the work ahead of time, to remain alert and attentive throughout the work process, and to implement all necessary safety measures.

"Caught in-between" hazards kill workers in a variety of ways. These include: cave-ins and other excavation hazards; body parts pulled into unguarded machinery; standing within the swing radius of cranes and other construction equipment; and being caught between equipment and fixed objects.

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What limits cell size How can the limitation of cell size be overcome?.

Answers

A cell's surface area grows as the square of its radius as the radius rises, yet its volume grows as the cube of its radius (much more rapidly). Thus, a cell's surface area to volume ratio drops as it grows in size.

A limited amount of cytoplasm can be under the control of each nucleus. This is one of the restrictions on certain biological cells' sizes. By possessing many nuclei, certain cells are able to get beyond this particular restriction. These unique cell types have multiple nuclei.

In biology, a cell is a basic membrane-bound entity that houses the building blocks of life and is the basic building block of all other living entities. As in the case of bacteria or yeast, a single cell is frequently an entire organism in and of itself.

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How many sister chromatids are there in the primary oocytes if there are 46 single chromosomes in the Oogonium?.

Answers

Sister chromatids are there in the primary oocytes if there are 46 single chromosomes in the Oogonium is 92 chromatids

Fertilization is the process of fusion of ovum and sperm cells to produce diploid cells. Diploid cells are cells that consist of 46 chromosomes or 23 pairs of chromosomes.

A chromatid is one of the two replicated arms of a chromosome formed by duplication of chromosomes during S phase or Interphase synthesis. The chromatids consist of two arms namely the p arm and the q arm, and during mitosis the fixed chromatids are joined to the centromere and are called sister chromatids. So that the 46 single chromosomes in the primary oocyte have 92 chromatids because each chromosome has 2 chromatid arms.

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What was Darwin's theory about the finches on the Galapagos Islands?.

Answers

Darwin's finches from the Galápagos archipelago have historical significance in evolutionary biology because they provided some of the fundamental insights into natural selection and adaptive radiation processes.

Charles Darwin discovered several species of finches that differed from island to island during his visit to the Galapagos Islands, which helped him develop his theory of natural selection. He noticed that the shape of the birds' beaks varied depending on the type of food they ate.

The Galapagos finches contributed to Darwin's understanding of natural selection. Darwin's Finches' beaks' favorable adaptations were selected for over generations until they all branched out to form new species. These birds, while nearly identical to mainland finches in every other way, had distinct beaks.

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a cell contain 98% water in its cytoplasm is place in a 2% salt solution. it should

Answers

Answer:

The cell would neither lose nor gain water

Explanation:

The condition does not permit diffusion. The concentration of salt in the internal environment and the surrounding environment is in equilibrium.

4) What problems does the manual removal of zebra mussels have? Why would you not want to use that method?

A. It is expensive.
B. It is a short-term solution. Zebra Mussels will return within 1 year.
C. It cannot be used in an actual, natural ecosystem.

Answers

The answer for question 4 is c

Groundwater can be _________ by landfills and septic tanks.
emptied
drained
contaminated
filled

Answers

Answer:

contaminated

Explanation:

Groundwater can be contimated by landfills and septic tanks

Which observation suggests that eukaryotes may share a more recent common ancestor with bacteria than with archaea?Many genes that affect metabolism in yeast are more similar to bacterial than archaeal genes.

Answers

Many yeast metabolism related genes resemble bacterial genes more so than archaeal genes.

Do both bacteria and archaea share any genes in common?

However, researchers later found that bacteria and archaea differ significantly in terms of molecules. Genetic studies have also shown that Domains Archaea and Eukarya are more closely related each other than to Genus Bacillus in terms of phylogeny.

What distinguishes bacterial from archaeal cells?

In contrast to archaeal cell walls, which are made of polysaccharides, bacteria cell walls are made of peptidoglycan, a mixture of proteins and carbohydrates sugars. Their cell walls' composition is also different from that of eukaryotic cell walls seen in fungi, insects, or plants cellulose chitin.

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Complete question

Which observation suggests that eukaryotes may share a more recent common ancestor with bacteria than with archaea?

a. behavioral traits

b. the tree that represents the fewest evolutionary changes, in either DNA sequences or morphology

c. gross morphological traits

d. Many genes that affect metabolism in yeast are more similar to bacterial than archaeal genes.

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After the incorporation of BOOM cards in her lesson plans, Mrs.Ann has seen an increase in student averages from 72% to 75%. Express this change as a percentage.A-4.2% increaseB-96% increaseC-26% increaseD-38% increase Of the 120 students honored at an academic banquet, 40% won awards for mathematics and 55% for English. Fourteen of these students won awards for both mathematics and English. One of the 120 students is chosen at random to be interviewed for a newspaper article. What is the probability that the student won an award in mathematics or English? What was Sojourner Truth's view on slavery?. C. propan-1-one D. pentan-1-ol Question 2 ceiling - 1,8 m 3,5 m mais (2) [12] A girl stands on a table in a classroom. She throws a ball of 0.2 kg vertically downwards to the floor hoping that the ball, after it bounced on the floor, will hit the the classroom. of She throws the ball with a velocity of 8 m.s-1 from a height of 1,8 m above the floor. Ignore the effects of friction. Write down the magnitude and direction of the acceleration of the ball immediately after ball left her hand. ( Is the ball in free fall while it moves downwards? Answer YES or NO and give an explana for the answer. Calculate the magnitude of the velocity with which the ball hits the floor. 27. one psychological theory holds that the desire for sexual gratification, if frustrated or blocked, may eventually find expression in painting or the writing of poetry. Briefly explain how the diagram to the right makes a goodmodel to represent the decay of a radioactive element.You are encouraged to label the diagram.You must use complete sentences. Can you solve this for me? Thank you! :> Read the quotation from "Song of Myself."I too am not a bit tamed, I too am untranslatable,I sound my barbaric yawp over the roofs of the world. sqrt 8 + sqrt 32 - sqrt 2, find the exact value of the expressioni got 6 sqrt 2, but it was wrong. translate!el hermano ama a su hermana! Make into simplest form I. Need Hellp lIKE HELP the central nervous system consist of the brain and spinal cord. at which level of organization is the brain an example of? A __________ is a set of organized beliefs and rules that establishes how a society will attempt to meet its basic social needs.a. groupb. social organizationc. social institutiond. working group 8. Describe the structureof the executive branch. What are the three themes found in the sermon Sinners in the Hands of an Angry God?. which of the following statements correctly identifies the synthesis reaction and explains why? only chemical reaction x, because one reactant is a compound only chemical reaction y, because both reactants are elements neither chemical reaction x nor y, because they have only one product both chemical reactions x and y, because there are two reactants and a single product how would you describe the motion of plates in a transform boundary? TRUE/FALSE. the ics intelligence function is limited to national security or other types of classified information. What are 3 important facts about Sojourner Truth?. Sam was admitted due to a loss of consciousness. After work-up it was determined that he has a benign neoplasm of the temporal lobe of his brain. The principal diagnosis for this case is reported with code ________ .a. S06.9x9A b. D33.9 c. D33.0 d. D33.01