No, If one light source displays more spectral lines than another it doesn’t mean that it contains more elements.
What are spectral lines?A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies. Spectral lines are often used to identify atoms and molecules.
Even a single element (like Hydrogen) has different spectral lines and therefore only one element could have various spectral lines for the various energy levels of that element. These energy levels are well known to astronomers and so it is easy to understand what and how many elements there are in that spectrum of the source. Spectroscopy is a huge source of knowledge about the stars. It may have more elements, or it may simply have heavier elements, which have more electrons than lighter elements and therefore a more complicated electronic structure, which allows for a far greater number of absorption lines.
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What are the three mechanisms by which chromatin remodelers can move nucleosomes?.
Answer: nucleosome methylation nucleosome repositioning nucleosome sliding nucleosome acetylation nucleosome remodeling removal of nucleosomes.
2. Which conditions are necessary for natural selection to occur? Select all of the answers that apply.
a. Inheritable adaptations vary among individuals.
b. The population size is increasing.
c. More individuals are born than can survive.
d. Fitness varies among individuals.
Inheritable adaptations vary among individuals
The population size is increasing.
Fitness varies among individuals.
This conditions are necessary for natural selection to occur
What is natural selection?
Nature's harsh conditions exterminate those who are unable to evolve. Those who are unable to pass on their survival skills to their kids are likewise eliminated. The term "Natural Selection" refers to the idea that those that adapt and procreate are being naturally chosen to live.
Natural selection is the method by which the pressure of selection chooses the traits that are more useful. Darwin's theory of natural selection emphasises the choice of an organism's advantageous traits that increase its chances of survival and reproduction. It is a methodology based on adaptation and modification.
Darwin used the finches of the Galapagos Islands as an example. From the same island, the finches spread out to the many Galapagos islands. This causes their beak sizes to change. The size of the beaks varies among finches due to their varied environments and diets.
Hence the correct option is a,b, and d.
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Traits controlled by genes on the x chromosome are called sex-linked traits. In what individuals are recessive sex-linked traits more commonly expressed?.
Males have one X chromosome and one Y chromosome, while females have two X chromosomes.For an X-linked trait to manifest in females, it must either be recessive with both alleles carrying .
The recessive type or dominant with two alleles that express the trait.However, because males only have one X chromosome, only one gene for any trait can really cause the trait in males. As a result, males will express sex-linked recessive features more frequently than females.The X chromosome is connected to some recessive genes that cause genetic abnormalities in humans. Males are more likely than females to have these flaws. This is due to the requirement that any gene with a recessive allele on chromosome X express itself phenotypically in males.Humans have two recessive sex-related characteristics that are found on the X chromosome: haemophilia and colour blindness. A blood clotting condition called haemophilia prevents blood from clotting.When a person has colour blindness, they are unable to discriminate between the colours of red and green.
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because animal cells typically lack the appropriate enzymes, which type of virus always encodes the enzymes needed to copy its genome?
Because animal cells typically lack the appropriate enzymes, RNA virus always encodes the enzymes needed to copy its genome.
What is RNA virus?
Except for retroviruses, which have ribonucleic acid as their genetic material, a RNA virus is a type of virus. Although it is typically single-stranded RNA, the nucleic acid can also be double-stranded.
According to the core tenet of molecular biology, RNA's main function is to translate the data encoded in DNA into proteins.
Up to a million times more mutations occur in RNA viruses than in their hosts, and large mutation rates are associated with increased virulence and evolvability, characteristics that are thought to be advantageous for viruses.
Orthomyxoviruses, Hepatitis C Virus (HCV), Ebola illness, SARS, influenza, polio, measles, and retrovirus including adult Human T-cell lymphotropic virus type 1 (HTLV-1) and human immunodeficiency virus are among the human diseases caused by RNA virus (HIV).
Therefore, because animal cells typically lack the appropriate enzymes, RNA virus always encodes the enzymes needed to copy its genome.
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How is it useful for organisms to have an uneven distribution of mitochondria among their cells?.
Answer:the one
Explanation it wins
one of the first abundant fossils is a trilobite which is still seen in tide pool environments today?
At the conclusion of the Permian period, about 252 million years ago, the last living trilobites eventually went extinct.
Where may one find fossilized trilobites?
In the rough mountains of western Canada, the flat plains of eastern Europe, the sweltering deserts of northern Africa, and the lush hills of southern China, their fossilized remains can be found. Trilobites can be found on every continent of the world where Paleozoic outcrops are present.
Over 22,000 different species of trilobites have been identified, making them one of the most successful early organisms. They have been present in oceans for approximately 270 million years.
Therefore, A trilobite is one of the earliest common fossils.
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The rate of transcription for a gene is found to be affected by a mutation. Where would you expect the mutation to appear on the dna?.
I would expect the mutation of the gene to appear on the DNA at the promotor for the gene.
What is mutation?Mutation is defined as the alteration or change in the patterns of the sequence of nucleic acids of gene of an organism.
There are various types of mutation that include the following:
missense, nonsense, insertion, deletion, duplication, and frameshift.The promotor of a gene is the area where transcription of RNS polymerase takes place therefore, mutation of the gene would most probably occur at that site.
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Which types of glial cells are found in the central nervous system?.
The adult central nervous system contains glial cells of three different types: astrocytes, oligodendrocytes, and microglia.
Which cellular kinds are present in the central nervous system?The primary cell types of the central nervous system include neurons, glial cells (including astrocytes, oligodendrocytes, ependymal cells, and microglia), choroid plexus cells, and blood vessel and covering cells.
Innate immune cells called microglia play two key jobs in the brain that are shared by myelomonocytic innate immune cells in all mammalian organs: they defend against and phagocytize viruses, bacteria, and other foreign invaders, as well as they clear away cell debris to promote wound healing.
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if 2n is four, then number of possible combinations of chromosomes in the resulting gametes, excluding any crossing-over, is:
In a diploid body cell, there are 2n = 4 chromosomes—2 from the mother and 2 from the father.
The exchange of genetic material between the non-sister chromatids of two homologous chromosomes during sexual reproduction, or chromosomal crossover, leads to recombinant chromosomes. Genes from the mother and father typically "cross over" or are scrambled to create a genetic mix particular to each baby. However, because the Y chromosome does not experience crossing over, its genes have a propensity to age prematurely and repetitive DNA sequences build up.When two non-sister chromatids on homologous chromosomes exchange genetic material during sexual reproduction, recombinant chromosomes are created. This process is known as chromosomal crossover, or crossing over.
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The transpiration pull is due to the ________ that causes water to move up through the xylem that begins at the surface of mesophyll cells.
The transpiration pull is due to the negative potential of pressure that causes water to move up through the xylem that begins at the surface of mesophyll cells.
Water moves through a plant during transpiration, where it evaporates from aerial parts like leaves, stems, and flowers. Although water is essential to plants, only a small portion of the water absorbed by the roots is utilized for growth and metabolism.
Transpiration and guttation account for the remaining 97–99.5% of loss. Stomata (plural "stoma"), which are tiny pores that cover leaf surfaces, are more prevalent on the undersides of the foliage in most plants. The guard cells and their stomatal accessory cells, collectively known as the stomatal complex, surround the stomata and are responsible for opening and closing the pore.
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The nervous system that controls the activity of glands, cardiac muscle, and smooth muscle is the nervous system.
The nervous system that controls the activity of glands, cardiac muscle, and smooth muscle is the autonomic nervous system because the branches of this nervous system are associated with many organs of the body.
What is the function of the nervous system?
The central nervous system, which includes the brain and spinal cord, is considered the primary nervous system of the human body. The autonomic nervous system has two branches, such as the parasympathetic branch, which instructs the cardiac and smooth muscles to work slowly. The other branch is the sympathetic branch, which is associated with the heart and sends the signal to work harder (in danger) and minimize the activity of smooth muscle (stomach) and glands to release emergency hormones.
Hence, the autonomic nervous system regulates the glands, cardiac muscle, and smooth muscle.
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which of the functions below would not be applicable to the sympathetic nervous system? question 21 options: 1) dilation of the airway passages 2) constriction of the blood vessels of the skin 3) increase in metabolic rate 4) pupillary constriction
The functions below would not be applicable to the sympathetic nervous system constriction of the blood vessels of the skin.
The parasympathetic anxious system restores the frame to a calm and composed state and prevents it from overworking. The sympathetic nervous system after the amygdala sends a distress sign.
The hypothalamus turns on the sympathetic apprehensive gadget by sending alerts thru the autonomic nerves to the adrenal glands. those glands respond by using pumping the hormone epinephrine (also known as adrenaline) into the bloodstream.
The sympathetic apprehensive gadget (SNS) is a network of nerve cells jogging from the mind stem down the spinal twine and out into the frame to touch an extensive variety of organs, along with the eyes, coronary heart, lungs, belly and intestines, joints, and skin.
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If a drug that specifically prevented the interaction of cytochrome c with other proteins was added to respiring mitochondria in a test tube, what effects would be observed?.
Reduced cofactors (NADH/FADH2) would build if a medication that selectively blocked the interaction of cytochrome c with other proteins were introduced to respiring mitochondria in a test tube.
It has been discovered that mitochondrial cytochrome c (cyt c) controls both cellular energy metabolism and apoptosis. Once released into the cytoplasm, cyt c can start the caspase activation cascade by interacting with apoptotic protease activating factors (Apaf). The mitochondrial electron transport chain is functionally connected to cytochrome c. This electron transport is a step in the process of making ATP. To move electrons from one complex of integral membrane proteins of the inner mitochondrial membrane to another is the function of cytochrome c.
The specific processes governing cytochrome c release from mitochondria during the early stages of apoptosis are yet unknown. In this study, we show that cytochrome c release necessitates a two-step procedure using isolated liver mitochondria. Cofactors that are utilised in a number of metabolic activities include NADH and FADH2. They participate in a variety of oxidation-reduction reactions as well. NAD+ and FAD+ are respectively converted to NADH and FADH2 when they absorb electrons.
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For healthy adults, the Recommended Daily Allowance (RDA) for protein has been set at 0.8 grams for each kilogram (or 2.2 lbs) of body weight. Assuming that a person weighs 140 pounds, calculate what your RDA for protein would be in grams. Round to the nearest whole number.
Please help, thanks!
Recommended Dietary Allowance (RDA) of protein for adults is 0.8 g per kilogram of body weight.
What is recommended dietary allowance?
The Food and Nutrition Board has determined the levels of essential nutrient intake known as Recommended Dietary Allowances (RDAs) to be sufficient to meet the known nutrient needs of nearly all healthy individuals.
You can determine how much protein you should be eating by converting your weight, which you likely know in pounds, to kilograms. In comparison to the average American woman, who weighs 168.5 pounds, the average American man weighs 195.7 pounds (88.77 kilograms) (which equals about 75.21 kilograms).
The RDA formula is as follows since most people should ingest 0.8 grams of protein per kilogram of body weight:
protein equivalent of 0.8 grams (weight in kilograms)
According to this recommendation, most men should consume 71 grams of protein daily, as 0.8 x 88.77 = 71.016. Since 0.8 x 75.21 = 60.168, women should normally consume roughly 60 grams of protein per day
You can just multiply your weight in pounds by 0.36 grams of protein if you have problems figuring out your body weight in kilograms. Thus, the RDA formula would be as follows:
0.36 g of protein multiplied by (weight in pounds)
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What will happen when the ribosome shifts one codon further on the mrna, assuming the next codon is not a stop codon?.
The tRNA in the A spot of the aforementioned figure will be expelled from the ribosome. The ribosome will attach to a fresh tRNA.
Describe a codon example.The sequence AUG, which designates the amino homocysteine, is an illustration of a codon. Every messenger RNA begins with the AUG codon, which not only codes for the amino acid methionine but also signals the beginning of a protein.
Codon and anticodon definitionsAn mRNA codon is a triplet or triple-nucleotide sequence that codes for a specific amine group during translation. A three-nucleotide sequence called the anticodon is present on tRNA and binds to the appropriate mRNA sequence. The anticodon determines which amino acid is carried by the tRNA molecule.
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Which of the following is the LEAST LIKELY reason for cells to undergo mitosis or binary fission?
increasing genetic diversity of a unicellular organism
growth and development of a multicellular organism
asexual reproduction of a unicellular organism
repair of damaged tissue in a multicellular organism
The cell forms an exact copy during mitosis or binary fission. The cell does not undergo mitosis or binary division for the purpose of increasing the genetic diversity of a unicellular organism. Option A is true.
What are mitosis and binary fission?In bacteria and other unicellular organisms, binary fission occurs to produce two daughter cells with the same genetic content as their parents. In eukaryotes and multicellular organisms, in mitosis results the daughter cells that are an exact copy of the parents and are required for growth, repairing damaged tissue, and so on.
Hence, the correct answer is that in mitosis, genetic diversity does not increase. The first one is the correct answer out of four.
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GIVING BRAINLIEST how are cardiac output and blood pressure related (anatomy class )
Cardiac output is the volume of blood that is expelled from the ventricle per minute and blood pressure is the tension generated by the blood on the arterial walls.
How are cardiac output and blood pressure related?Blood pressure is determined by the interaction of various factors such as cardiac output and peripheral resistance. If the correct volume of blood is sent through the arteries there will be a correct arterial pressure, it could be said that they are directly proportional.
Thus, cardiac output helps maintain blood pressure to deliver oxygenated blood to vital organs.
Therefore, we say that cardiac output and blood pressure are related.
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When water vapor in the atmosphere comes in contact with cool air, it releases energy into the atmosphere, allowing the formation of clouds. What is the name of this process?.
The process of formation of clouds allowed by water vapor in the atmosphere after it comes in contact with cool air and releases energy into the atmosphere is called condensation.
Condensation, which is the opposite of vaporisation, is the transformation of matter from its gaseous state into its liquid state. The water cycle is what the phrase most frequently alludes to. Another way to describe it is as the transformation of water vapour into liquid water when it comes into touch with a solid, liquid, or cloud condensation nucleus in the atmosphere. Deposition is the term for the change that occurs when the gaseous phase directly transitions into the solid phase.
Condensation begins when atomic or molecule clusters of that species form within its gaseous volume, similar to how raindrops or snowflakes form within clouds, or when the gaseous phase makes contact with a liquid or solid surface. Water-nucleating proteins, which are made by atmospheric bacteria and have the ability to bind either gaseous or liquid water molecules, can catalyse this in clouds.
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Where in the eukaryotic cell would you expect to find transcripts with intron sequences?.
The eukaryotic cell would expect to find transcripts with intron sequences in the nucleus.
What is intron?Introns аre the sequences between the exons аnd the intron messаges аre spliced out by the spliceosome in the formаtion of the coding RNАs (mRNА, rRNА аnd tRNА). The protein-coding sequences for mаny genes аre broken into smаller pieces of coding sequences cаlled exons sepаrаted by non-coding sequences cаlled introns. When genes аre trаnscribed, those exons аnd introns аre included in the initiаl messenger RNА products. However, introns аre removed during the process cаlled splicing so only exons аre included in the mаture mRNА аnd used to dictаte whаt proteins аre produced. In mаny genes, the introns аre much longer thаn the exons. Introns mаy contаin sequences thаt regulаte how genes аre expressed or trаnscribed аnd how mRNА is processed.
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Recall that alleles of a single gene will segregate from one another during anaphase i. When do alleles for two different genes—located in two different chromosomes—segregate?.
Anaphases I and II of meiosis are where Mendel's Segregation law takes place. The homologous chromosomes are sorted into two daughter nuclei with their different versions of each gene during this stage of the first meiotic division.
Allele segregation corresponds to the division of chromosomes during meiosis. During anaphase 1 of meiosis 1, homologous chromosomes divide, resulting in the segregation of alleles. When chromosomes are randomly distributed into daughter cells during meiosis, they exhibit independent assortment.According to Mendel's law of segregation, an individual's alleles separate during the development of gametes. True breeding tall plants (TT) and true breeding short plants were crossed by Mendel (tt). The F1 generation of this hybrid only produced tall plants of the genotype Tt.
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11. Compare the polypeptides chain produced after the frameshift mutation and after a substitution mutation with the polypeptide chain coded for by the original DNA. Based on your comparison, if the polypeptide chain is critical for the cell's survival, which type of mutation is more likely to be harmful to the cell, a frameshift or substitution mutation. a. Explain.
A frameshift mutation is a type of genetic change brought on by indels in DNA sequences that contain many nucleotides that are not divisible by three. Because codons are used to express genes in triplets, an insertion or deletion may alter the reading frame and produce a translation that is entirely different from the original.
A mutation known as a substitution swaps one base for another (i.e., a change in a single "chemical letter" such as switching an A to a G). A codon that encodes a different amino acid may be changed, which would result in a minor modification to the protein that is created.
What is mutation?
A mutation is a modification to the DNA sequence of an organism. Mutations can result through viral infection, errors in DNA replication during cell division, and exposure to mutagens. Germline mutations, which occur in eggs and sperm as opposed to somatic mutations, which occur in body cells, can be passed on to progeny.
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Which molecules have been synthesized in experiments similar to the ones performed by miller and urey?.
Answer:
DNA
Explanation:
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a nondisjunction occurs during meiosis ii of sperm formation. are the two homologues of the affected chromosome in aneuploid gametes identical to one another or different from one another?
Nondisjunction occurs during meiosis ii of sperm formation. are the two homologs of the affected chromosome in aneuploid gametes identical to one another or different from one another Gonads.
Aneuploidy is the presence of an unusually wide variety of chromosomes and is distinctly established in human gametes. certainly, aneuploidy is the main genetic cause of spontaneous miscarriage and congenital delivery defects in our species.
The maximum common motive of aneuploidy is nondisjunction, the failure of chromosomes to disjoin typically for the duration of meiosis (seeing. ninety-eight. 1). Nondisjunction can arise at some point of meiosis I or II or throughout mitosis, although maternal meiosis I am the maximum not unusual nondisjunction in aneuploidies (e.g., Down syndrome, trisomy 18).
Although it does not have an effect on the fertilization rate, an expanded sperm aneuploidy fee is associated with an extra rate of pregnancy failure. nevertheless, a few patients with increased sperm aneuploidy price can still gain a being pregnant, however with an expanded hazard of generating an aneuploid offspring.
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What enzyme moves outward from the origin of replication and breaks hydrogen bonds between dna nucleotides?.
Using the theories of enzymes, we got that Helicase is the enzyme moves outward from the origin replication and breaks hydrogen bonds between dna nucleotides.
Helicases are the class of enzymes thought to be vital to all organisms. Their main function is to unpack the organism's genetic material. Helicases are motor proteins that move directionally along the nucleic acid phosphodiester backbone, separating the two hybridized nucleic acid strands (hence helic- + -ase), using energy from the ATP hydrolysis. There are many helicases, representing the great variety of the processes in which strand separation must be catalyzed. Approximately 1% of the eukaryotic genes code for helicases.
Hence, the enzyme moves outward from the origin of replication and breaks hydrogen bonds between dna nucleotides is helicase.
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A system has reached equilibrium when the concentration across the barrier is equal on all sides. Why is it important that living organisms not reach equilibrium in the concentrations of oxygen and carbon dioxide?.
The living organisms must not reach equilibrium in the concentration of oxygen and carbon dioxide so that the Exchange of gases continues . Otherwise respiration and photosynthesis will stop.
What is photosynthesis?
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
1.Gases move along the concentration gradient i.e. from their higher concentration to lower concentration.
2.If living organisms reach a equilibrium of carbon dioxide and oxygen concentration, then The gases will not move in and out of the cells.
3.This is because at state of equilibrium the concentration of gases on both side become equal and the movement completely ceases.
4.If gaseous exchange in the body stops the process of respiration and photosynthesis in Plants and respiration in animal will completely stop
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The phenotypic ratio of the f2 generation of the dihybrid cross in mendel’s experiment with pea plant was.
The phenotypic ratio of the f2 generation of the dihybrid cross in mendel’s experiment with pea plant was 9:3:3:1.
Mendel observed that the F2 generation of his dihybrid cross had a ratio of 9:3:3:1 and produced nine plants with round, yellow seeds, three plants with round, green seeds, three plants with wrinkled, yellow seeds, and one plant with wrinkled, green seeds. A phenotype refers to the outer appearance of an individual.
Mendel found through his experiment that the parental generation's trait pairs sorted apart from one another from one generation to the next. A mating experiment between two organisms that are equally hybrid for two traits is referred to as a dihybrid cross.
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genome-wide association studies (gwas) found significant changes in ease of research once they were able to use as a way to identify intelligence.
Genome-wide association studies (GWAS) aid in the identification of genes linked to a certain disease (or another trait). This strategy examines a big population's complete genome in an effort to find tiny changes known as single nucleotide polymorphisms, or SNPs.
A fixed P-value threshold of 5 108 is frequently employed in genome-wide association studies (GWAS) to detect associations between common genetic variants and desirable traits while accounting for multiple testing.While whole-exome sequencing (WES) and whole-genome sequencing (WGS) investigations strive to capture all genetic variation, genome-wide association studies (GWAS) typically use targeted genotyping of specific and preselected variants utilizing microarrays.
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Two heterozygous tall plants (tt) are crossed. What are the expected genotypes and percentages of this cross?.
The expected genotypes and percentages of this cross are Option 4. TT 25%; Tt 50%; tt 25%.
This is a dihybrid cross of two heterozygous parents. The tendencies located on this cross are the equal traits that Mendel changed into looking at for his experiments. This move consequences in the anticipated phenotypic ratio of 9:three:3:1.
Calculation:-
Dihybrid cross:-
T t
T TT Tt
t Tt tt
Total games = 4
TT = 1
1/4 × 100 = 25%
Tt = 2
2/4 × 100
= 50 %
TT = 1/4 × 100 = 25%
Hence, Option D.TT 25%; Tt 50%; tt 25%
The dihybrid crosses chart one-of-a-kind tendencies in a single breeding experiment. bear in mind a pass between two mothers and fathers that are heterozygous for both body color and eye shade (BbEe x BbEe). This sort of experiment is known as a dihybrid go. these alleles are known as a genotype. If the two versions are different, you've got a heterozygous genotype for that gene.
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Disclaimer:- your question is incomplete, please see below for the complete question.
Two heterozygous tall plants (Tt) are crossed. What are the expected genotypes and percentages of this cross?.
1. TT 50%; Tt 50%
2. TT 25%; tt 75%
3. Tt 25%; TT 50%; tt 25%
4. TT 25%; Tt 50%; tt 25%
What are the functions of mucus and cilia?.
In the lungs, mucus and cilia cooperate to assist eliminate any possible inhaled material. The mucociliary clearance is what's happening here. The cilia (tiny hair-like projections off of the cells lining the respiratory system) move in a way to transfer the mucus (and foreign material) out of the lungs when dirt and other foreign objects become lodged in the mucus.
Before pathogens like viruses and dangerous bacteria enter the lungs, the mucus in the trachea aids in their capture. The temperature of the air entering and leaving the lungs is also regulated by the trachea.Cilia, which resemble hair-like projections, border the bronchi of the lungs and transport bacteria and detritus up and out of the airways. The cilia include goblet cells that release mucus all over them.
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If 150 glucose monomers are joined together to form a starch molecule, how many water molecules would be formed?
If 150 glucose monomers are joined together to form a starch molecule,It would become the same as another of starch component similar glycogen. Amylose as you mentioned have 1-4 bonds but glycogen have 1-6 bonds.
What makes glycogen less soluble in water?Glycogen is more branched and this makes it less soluble in water. also it is used as a storage medium only and it is not easily digested. Just the level of complexity would have increased. Solubility would have lessened.
Glycogen is the storage form of glucose in plants. The given statement is false because starch is the storage form of glucose in plants, and glycogen as the storage carbohydrate in animals.
Therefore, If 150 glucose monomers are joined together to form a starch molecule,It would become the same as another of starch component similar glycogen. Amylose as you mentioned have 1-4 bonds but glycogen have 1-6 bonds.
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