206
There are typically around 270 bones in human infants, which fuse to become 206 to 213 bones in the human adult. The reason for the variability in the number of bones is because some humans may have a varying number of ribs, vertebrae, and digits.
Human neonates normally have about 270 bones, which fusion results in 206 to 213 bones as an adult.
The reason for the variation in the number of bones is that different individuals of the human species may have different numbers of ribs, vertebrae, and digits.
To meet the needs of completing fine or strong motor activities, they vary in size, shape, and strength. Despite having little strength, the middle ear bones are important in the transmission of sound waves to the inner ear's auditory organs.
Some bones, such as the femur, are very strong and can sustain great force before breaking .From a microanatomical standpoint, bones are very specialized connective tissue with the capacity to remodel naturally in response to demands.
The osteoblast is the main cell type that produces new bone. Type I collagen, a protein produced by the human body, is abundant in the fluid called osteoid, which is secreted by osteoblasts.
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some jellyfish have skeletons that are formed by fluid-filled compartments. This fluid resists compression and thus supports the body structure from deforming.
In jellyfish fluid-filled compartments compression and thus supports the body structure from deforming hence it is consider as their skeleton.
The informal popular names for the medusa-phase of several gelatinous members of the subphylum Medusozoa, a significant division of the phylum Cnidaria, are jellyfish and sea jellies. Although some jellyfish are tethered to the seafloor by stalks rather than being mobile, jellyfish are typically free-swimming marine creatures with umbrella-shaped bells and trailing tentacles. To create propulsion for extremely effective movement, the bell can pulse. The stinging cells on the tentacles can be employed to catch prey and fight off predators. Jellyfish have a complicated life cycle; the medusa stage, which typically results in planula larvae that spread widely and undergo a sedentary polyp phase before reaching sexual maturity, is the sexual phase. The umbrella-shaped bell is a real jellyfish's distinguishing characteristic. The hydrostatic skeleton of the animal is housed in this hollow structure, which is made of a mass of transparent, jelly-like material called mesoglea.
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2.there are two different types of ionotropic glutamate receptors, ampa and nmda receptors. nmda receptors have a higher affinity, that is a lower ec50, for glutamate than ampa receptors. all other things being equal, which receptor would most likely be saturated by a glutamate release event?
The NMDA receptor, the AMPA receptor, and the kainate receptor are three ionotropic glutamate ligand-gated ion channels.
NMDA (N-methyl-d-aspartate), AMPA (amino-3-hydroxyl-5-methyl-4-isoxazole-propionate), and kainic acid are the names of the agonists that cause these glutamate receptors to become active.
In the mammalian central nervous system (CNS), glutamate is the main excitatory neurotransmitter. Both ligand-gated ion channels and G-protein coupled receptors, which are known as metabotropic receptors, are the two groups of receptors via which it functions.
The electrical charge of a message or signal causes neurotransmitter vesicles to leak into a fluid-filled gap that lies between nerve cells as the message passes along a nerve cell; in this example, glutamate.
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which example describes an abiotic factor interracting with a biotic factor? Lower Water temperatures increase oxygen concentration in the water. More light allows plants to grow. Bears feed on salmon. squirrels use trees as homes.
'Tropical Fish need warm water to survive' is an example of an abiotic factor interacting with a biotic factor.
What exactly do you mean by abiotic factor?
Abiotic factors are physical and chemical components of an environment that affect the growth and survival of organisms. Examples of abiotic factors include temperature, light, humidity, water, wind, pH, and soil.
A biotic factor is any living organism or component of an ecosystem, while an abiotic factor is a non-living part of the environment. In this example, the warm water is an abiotic factor, and the tropical fish is a biotic factor. The warm water is essential for the survival of the tropical fish, so the abiotic factor is interacting with the biotic factor.
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Correct form of question:
Which example describes an abiotic factor interacting with a biotic?
A.Tropical Fish need warm water to survive.
B. High water temperature is decreased oxygen concentration in the water.
C. More light increases the water temperature.
D. Small fish are good for larger fish.
Answer: C: More light allows plants to grow
Explanation: k12 test 1.04
how can fuel arrangement affect the behavior of a wildland fire?
Which characteristic is NOT exhibited by BOTH prokaryotic and eukaryotic cytoplasmic membranes?
A. Phospholipid bilayer
B. Embedded proteins
C. Sterols
D. Selectively permeable barrier
E. Transport systems
Prokaryotic cells lack the phospholipid bilayer, microtubules, and Golgi apparatus, which are specific to eukaryotic cells.
Do eukaryotes and prokaryotes both have membrane-bound organelles?Both unicellular organisms are composed of eukaryotic cells, which are characterized as having organelles that are membrane-bound. Contrarily, prokaryotic cells are exclusively found in unicellular organisms and are devoid of any membrane-bound organelles.
Do eukaryotic and prokaryotic cells both include cytoplasm?Both prokaryotes contain the cytoplasm, which serves to house the cellular organelles and provide an ideal environment for them. Protein synthesis or energy production are two complex metabolic processes that are carried out by cytoplasmic organelles.
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What are ketone bodies a byproduct of?
Ketone bodies are a byproduct of Lipolysis.Ketone bodies are water soluble molecules.
Ketone bodies, or just ketones are substances delivered by the liver during gluconeogenesis, a cycle that makes glucose in the midst of fasting and starvation. There are three ketone bodies created by the liver. They are acetoacetate, beta-hydroxybutyrate, and (CH₃)₂CO. These mixtures are utilized in sound people to give energy to the cells of the body when glucose is low or missing in the eating routine.
At the point when glucose levels are high in your body, it is in the middle of putting away the overabundance as fats, building proteins, and in everyday developing. This is known as the absorptive state. At the point when you quick, or are being famished, the glucose levels in your blood rapidly decline. This triggers the body to enter the postabsorptive state. In this express, the body begins changing over fat once more into unsaturated fats, glycogen into glucose, and even beginnings separating amino acids for energy.
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what minimum percent must be exceeded for a deep-sea biogenic ooze to be named after its principal component?
Deep-ocean sediments are often categorised according to their biogenic components if the biological ingredients make up more than 30% of the total volume.
Defining ooze Is the biological productivity of surface water in a particular area always accurately predicted by the thickness of ooze?No, the ooze does not collect everywhere on the ocean floor, therefore it is not always a reliable indicator of biological productivity.
How much of ooze is made of biogenic material?The term "biogenic ooze" is also used for biogenic sediment. Any pelagic silt that contains skeletal material in amounts more than 30% must be known.
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pedigree b is most likely autosomal dominant. what is/are the genotype(s) of the parent(s) that transmitted the mutant allele(s) to their offspring?
without sufficient details, the genotype(s) of the parent(s) that transmitted the mutant allele(s) to their offspring
The genotype of the parent(s) who passed the mutant allele(s) to their kids cannot be ascertained without sufficient details about the particular pedigree in question.
Individuals with the mutant allele are afflicted in an autosomal dominant pedigree and can pass the mutant allele to their progeny. An autosomal dominant pedigree's pattern of transmission gives each affected person a 50% probability of passing on the mutant gene to each of their progeny.
However, the genotypes of the individuals in the pedigree, as well as any further details regarding the specific mutation and how it is inherited, would be required to identify the parent(s) who transmitted the mutant allele(s). Additionally, more than one person in a pedigree can possess the mutant allele in some circumstances, making it challenging to determine which parent transmitted the mutant allele based on the available data.
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What will happen if the ph of the solution containing this protein is changed from a neutral ph of 7 to an acidic ph 3?
The ionization of amino acid atoms and molecules as a result of a pH change can alter the shape and structure of proteins and impair their ability to perform their intended functions.
What are proteins?An incredibly complex, naturally occurring molecule known as a protein is made up of amino acid residues connected by peptide bonds.
Because unbound protons or hydroxide ions change the protein's protonation state, the pH has an impact on a metalloprotein's redox potential.
Free protons can combine with basic nitrogen sites to increase the protein's positive charge (or lowering negative charge).
A pH change can cause amino acid atoms and molecules to ionise, changing the shape and structure of proteins and preventing them from carrying out their intended tasks.
Thus, this can be the result the pH of the solution containing protein is changed from a neutral pH of 7 to an acidic pH 3.
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The fish in a certain population average 10 millimeters in length. Imagine that a population of predatory birds arrives in the area, but they cannot eat fish longer than 15 millimeters. After many, if the fish averaged 14 millimeters in length, what probably happened?
It is likely that the population of fish underwent a process of natural selection in order to adjust to the presence of the predatory birds.
The fish that were able to survive the predation pressure were those that were able to grow to lengths greater than 15 millimeters, as they were the ones that were able to evade being eaten. Over time, this selection pressure caused the average length of the fish population to increase, leading to the average length of the fish being 14 millimeters.
This process of natural selection is an important part of evolution, as it allows species to adapt to changing environments and survive in the face of changing conditions.
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What is taxonomy? Someone plss hel
Which body part develops in regions with a low concentration of Bicoid protein?ThoraxHeadAbdomen
Option a. The Thorax and the mid-region foster in districts with a low centralization of protein in natural product flies (Drosophila melanogaster).
Bicoid protein assumes a critical part in deciding the foremost back pivot of the creating fly undeveloped organism and is engaged with the guideline of quality articulation. In districts with a high grouping of Bicoid protein, the head creates, while in locales with a low fixation, the chest and the mid-region create.
Bicoid protein is a vital participant in deciding the body plan of creating natural product fly undeveloped organisms. It goes about as a morphogen, meaning it impacts quality articulation in a fixation subordinate way. The protein is most noteworthy in focus at the foremost finish of the undeveloped organism, prompting the advancement of the head. In districts of lower fixation, the chest and mid-region create. Bicoid is answerable for laying out the front back pivot and guaranteeing legitimate body division. Concentrating on its conduct in natural product flies has given significant bits of knowledge into how creatures structure their bodies during advancement.
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The complete question is:
Which body part develops in regions with a low concentration of Bicoid protein?
a. Thorax
b. Head
c. Abdomen
The most superficial layer of skin is the _____.
Answer:The epidermis
Explanation:The epidermis is the most superficial layer of the skin and provides the first barrier of protection from the invasion of substances into the body. The epidermis is subdivided into five layers or strata: stratum basale. stratum spinosum.
An egg has 23 chromosomes is it haploid or diploid?
An egg cell with 23 chromosomes is considered diploid.
Diploid cells contain two sets of chromosomes, one set inherited from each parent, for a total of 2n chromosomes. In the case of humans, each cell in the body contains 46 chromosomes, or 23 pairs, which are present in diploid cells.
Haploid cells, on the other hand, contain only one set of chromosomes, or n chromosomes, and are typically found in reproductive cells such as sperm and eggs. Haploid cells are important because they ensure that each offspring receives a unique combination of genetic material from its parents.
So in the case of an egg cell with 23 chromosomes, it is considered diploid because it contains two sets of chromosomes, or 2n, rather than just one set of chromosomes, or n.
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Challenges for survival of the first land plants include
I. sources of water.
II. sperm transfer.
III. desiccation.
IV. animal predation.
A) I only
B) II only
C) II, III and IV only
D) I, II and III only
The greatest test that early land plants needed to confront ca. quite a while back was getting by in dry, non-lowered conditions. Green growth extricates supplements and light from the water that encompasses them. The correct answer is (D) I, II, and III only.
There are four significant difficulties to plants living ashore: acquiring assets, remaining upstanding, keeping up with dampness, and replicating. Getting Assets From Two Spots Without a moment's delay Green growth and other sea-going organic entities procure the assets they need from the encompassing water.
Plants are remembered to have developed from an amphibian green alga protist. Afterward, they developed significant transformations for land, including vascular tissues, seeds, and blossoms. Every one of these significant transformations improved plants appropriate for life on dry land. The most established fossils of land plants date back around 470 million years.
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the pulmonary veins a. contain deoxygenated blood. b. leave the hilum at a slightly lower level than the bronchi and pulmonary arteries. c. are considered part of the systemic circulatory system. d. all of the above
drag the terms into position to correctly summarize the red blood cell life cycle.
Red blood cells are produced in the bone marrow and released into the bloodstream. They circulate for about 120 days before being removed from the circulation by the spleen and liver and broken down into their component parts.
What is Red blood cells?Red blood cells, also known as erythrocytes, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues. They contain hemoglobin, a protein that binds to oxygen, and they transport oxygen from the lungs to the rest of the body. In addition to oxygen transport, red blood cells also carry carbon dioxide and other substances to the cells in the body.
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Output: information sent along pathway to effector
Homeostasis
: Blood sugar Regulation
Answer:
Explanation:
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Categorize the appropriate structures or descriptions with the appropriate layer of skin that is highlighted in blue. Words can be used more than onceComposed of 5 layersIs avascularComposed of keratinocytesMost superficial layerComposed of 2 layersContains hair folliclesContains sweat glandsAlso known as subcutaneousComposed of loose areolar and adipose tissueContains sweat glands
The structures highlighted in blue in the image are the layers of the skin called dermis and epidermis. Dermis layer lies beneath the epidermis, which is the superficial layer.
Our skin is composed of 2 layers: epidermis and dermis. Epidermis is the most superficial layer that is made up of closely packed epithelial cells. The epidermis is composed of stratified and keratinized squamous epithelium called keratinocytes, which are the cells that manufactures and store a protein called keratin. It has four or five layers of epithelial cells depending on where in the body it is. It has no internal blood vessels (i.e., it is avascular). The term "thin skin" refers to skin having four cell layers. These layers are the stratum Basale, stratum spinosum, stratum granulosum, and stratum corneum, and they are arranged from deep to surface.
As opposed to the epidermis and hypodermis, the dermis could be regarded as the "core" of the integumentary system. It has nerves, blood and lymph vessels, as well as other parts including hair follicles and sweat glands. The two connective tissue layers that make up the dermis are joined by a network of elastin and collagen fibers that are created by fibroblasts.
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What bone structure lines the medullary cavity of a long bone?
Endosteum is the bone structure that lines the medullary cavity of a long bone.
The medullary cavity is lined by a thin membrane called the endosteum (endo- = within). It has a thin layer of connective tissue and one layer of bone-forming cells. A long bone is one whose length exceeds its width. A long bone has two ends and a shaft. Long bones feature an inner medullary cavity containing bone marrow and a thick outer covering of solid bone.
Adults have a hollow, cylindrical region within the diaphysis called the medullary cavity, also known as the marrow cavity, which houses a large number of blood vessels and fatty yellow bone marrow. By removing dense bony tissue from the area of the bone that is least needed, this hollow reduces the weight of the bone. The tubular structure of the long bones offers greatest strength with minimal weight.
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eukaryotic cells a. have cell walls with peptidoglycan. b. are usually smaller than prokaryotic cells. c. do not usually have a nucleus. d. have membrane-bound organelles. e. have nucleoids.
Eukaryotic cells have d)have membrane-bound organelles.So,correct option is d.
Eukaryotic cells have a core encased inside the atomic layer and structure huge and complex creatures. Protozoa, organisms, plants, and creatures all have eukaryotic cells. They are characterized under the realm Eukaryota.
The features of eukaryotic cells are as per the following:
Eukaryotic cells have the core encased inside the atomic layerThe cell has mitochondria.Flagella and cilia are the locomotory organs in an eukaryotic cell.A cell wall is the furthest layer of the eukaryotic cells.The phones partition by a cycle called mitosis.The eukaryotic cells contain a cytoskeletal structure.The core contains a solitary, straight DNA, which conveys all the hereditary data.They can keep up with various conditions in a solitary cell that permits them to do different metabolic responses. This assists them with developing commonly bigger than the prokaryotic cells.
Organelles that are layer bound are cell structures that are encased or covered by a natural film. The film is regularly comprised of a solitary or twofold layer of lipids with blended proteins.
Hence,correct option is d.
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temporalis muscles and their attachments describe the origin and the insertion of this muscle. how is this structure linked to the function?
The temporalis muscle runs superficially, from the temporal bone to the coronoid process of the mandible. The primary function of this muscle is to control the motions of the mandible at the temporomandibular joint, which in turn makes the process of mastication easier to perform.
The muscles of mastication are a group of muscles that include the temporalis, masseter, medial pterygoid, and lateral pterygoid muscles. These muscles work together to grind, chew, and swallow food. The masseter muscle is located in the area of the cheek, while the medial and lateral pterygoids are located in the infratemporal fossa. The temporalis muscle is located in the temporal fossa.
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based on the five assumptions of hardy-weinberg equilibrium, which assumption directly addresses genetic drift? why does this lead to evolution if this assumption is not met?
The Hardy-Weinberg principle is founded on a number of assumptions, including a huge population and the absence of natural selection. No selection, no gene flow, no random mating, no new mutations, and so on.
The formula p²+2pq+q²=1 may be used to get the allelic frequency. The shift in the frequency of allel inside a population over time is referred to as genetic drift. As genetic drift to occur, this change in allel frequency must be random. Population size influences the amount of alleles present in a population. Small population numbers introduce unpredictable features such as genetic drift. Fixation of alleles or genotypes in a population is caused by genetic drift.
As a result, the Hardy-Weinberg principle of no genetic drift requires a high or infinite population size. In the absence of additional evolutionary forces, the Hardy-Weinberg principle, also characterized as the Hardy-Weinberg equilibrium, model, theorem, and rule in population genetics, maintains that allele & genotype frequencies in a population would stay constant from generation to generation.
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Animals that possess homologous structures probably _____. See concept 26. 2 (page 556) view available hint(s) animals that possess homologous structures probably _____. See concept 26. 2 (page 556) evolved from the same ancestor are the result of convergent evolution have increased genetic diversity are the result of similar environmental pressures in different evolutionary lineages are not related submit
Animals with similar structures most likely have a common ancestor. Homologous structures are body parts or organs that are present in various species .
Body parts or organs that are identical in structure and function yet are found in various species are known as homologous structures. The notion of evolution by natural selection is supported by the idea that these structures share a common evolutionary ancestor. For instance, although though the forelimbs of diverse mammal species—including humans, horses, and bats—have varied tasks, they all share a similar bone structure. This resemblance shows that these animals shared a common ancestor during their evolution and that the forelimbs have changed over time to accommodate the unique requirements of each species. Homologous structures can be utilised to recreate the evolutionary history of a collection of animals and offer proof for the ties between species that have developed over time.
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agriscience encompasses group of answer choices wildlife and fish ornamental plants and trees farms and agribusiness all of the above
Agriscience encompasses with a)wildlife and fish,b)ornamental plants and c)tree farms.So,correct option is d) which is all of the above.
Agricultural science (or agriscience for short[1]) is an expansive multidisciplinary area of science that envelops the pieces of precise, normal, monetary and sociologies that are utilized in the training and comprehension of horticulture. Experts of the horticultural science are called farming researchers or agriculturists.
In the eighteenth 100 years, Johann Friedrich Mayer directed probes the utilization of gypsum (hydrated calcium sulfate) as a fertilizer.[2]
In 1843, John Bennet Lawes and Joseph Henry Gilbert started a bunch of long haul field tests at Rothamsted Exploration in Britain, some of which are as yet running as of 2018.In the US, a logical upset in horticulture started with the Seal Demonstration of 1887, which utilized the expression "rural science".[6][7] The Portal Act was driven by ranchers' advantage in knowing the constituents of early counterfeit manure. The Smith-Hughes Demonstration of 1917 moved agrarian schooling back to its professional roots, yet the logical establishment had been built.[8] After 1906, public consumptions on horticultural exploration in the US surpassed private consumptions for the following 44 years.
Hence,correct option is d.
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(Complete question) is:
agriscience encompasses group of answer choices
a)wildlife and fish
b)ornamental plants and trees
c)farms and agribusiness
d)all of the above
subunits called _______ are the building blocks of nucleic acids, as determined by scientists by 1930
By the year 1930, scientists had discovered that nucleic acids are composed of components called nucleotides.
What do nucleotides mean?a molecule made composed of a nitrogen-containing base, such as adenine, guanine, thymine, and cytosine in Cd; adenine, guanine, uracil, and cytosine in RNA; a phosphate group; and a sugar, such as deoxyribose in Genetic code; ribose in RNA.
What are nucleotides, and what do they do?The basic units of RNA and DNA are nucleotides. They have genetic material. Coenzymes, such as nucleotides, are necessary for enzymes to catalyze various biological processes. In our bodies, energy is kept in the form of ATP.
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which of the following increases the fidelity of dna replication? choose the one best answer. group of answer choices the 3' to 5' exonuclease activity of dna polymerase i. removal the rna flap by a flap endonuclease. a topoisomerase relieves supercoiling tension ahead of the replication fork. the sliding clamp
The sliding clamp is the answer choice that increases the fidelity of DNA replication.
The sliding clamp is a ring-shaped protein that encircles the DNA double helix and acts as a scaffold for the DNA polymerase enzyme during replication. By physically holding the DNA polymerase in place and preventing it from sliding off the template strand, the sliding clamp helps increase the processivity and accuracy of DNA replication.
The other answer choices listed (3' to 5' exonuclease activity of DNA polymerase I, removal of the RNA flap by a flap endonuclease, and a topoisomerase relieving supercoiling tension ahead of the replication fork) all play important roles in DNA replication, but they do not directly increase the fidelity of the process. The 3' to 5' exonuclease activity of DNA polymerase I helps remove misincorporated nucleotides, while the removal of the RNA flap by a flap endonuclease is important for maintaining the integrity of the replication fork. A topoisomerase helps relieve supercoiling tension that can impede DNA replication.
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many bacterial cell structures act as virulence factors. virulence factors are characteristics of an organism that enhance its ability to cause disease. predict which cellular structure(s) may act as a virulence factor.
Many bacterial cell shapes have virulence-enhancing effects. A trait of an organism that makes it more likely to spread illness is called virulence. Identify the cellular structure or structures that could operate as virulence factors. .
Which of the following bacterial cell types most likely contributes to the pathogen's virulence?Since it enables bacterial cells to evade lung phagocytes, the capsule is the pathogen's most crucial determinant of virulence.
Certain bacterial infections develop extra virulence factors, such as fimbriae to prevent phagocytosis or mycolic acid to resist some of the killing processes within the phagolysosome, in addition to capsules Public health is gravely concerned about the growth of bacterial illnesses that are resistant to antibiotics .
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a structure that is composed of at least two different tissue types and has discrete boundaries is called a(n)
An organ is defined as any anatomical structure with discernible structural boundaries, at least two distinct tissue types, and a distinct function distinct from the structures around it.
What do we mean by tissue?Simply put, tissues are groups of cells that have a similar shape and function. They form a cellular organisational level between cells and organ systems.
The four basic types of tissue are connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue holds other tissues together and supports them (bone, blood, and lymph tissues). Epithelial tissue serves as a covering (skin, the linings of the various passages inside the body). The Old French word tissu, which means "a ribbon, belt, or piece of woven material," is where the noun tissue originates. As a verb, "weave fabric strands" is what tissue means. Tissues are now thought of as disposable paper used for wrapping gifts or blowing our noses.
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Choose ALL the correct statements about vitamins.
Your body can build most of the vitamins it needs.
Vitamins are organic compounds found in food.
Vitamins are a source of fuel for the body.
Hypervitaminosis (too much of a vitamin) is more likely to happen with a fat-soluble vitamin than a water- soluble vitamin.
Which are correct^ help!!
Answer:
B and D should be correct.
Explanation:
A is incorrect because food and proteins can help build fuel for you body, which is the same as vitamins.
B is correct because vitamins are organic compounds found in very small amounts in food and required for normal functioning—indeed, for survival. Humans are able to synthesize certain vitamins to some extent. For example, vitamin D is produced when the skin is exposed to sunlight; niacin can be synthesized from the amino acid tryptophan; and vitamin K and biotin are synthesized by bacteria living in the gut.
C is incorrect because while vitamins are good for your body, food is also great and something you need to live. Getting nutrients and proteins from food is essential and a need in life.
D is correct because some vitamins from B-complex, hypervitaminosis usually occurs with the fat-soluble vitamins A and D, which are stored, respectively, in the liver and fatty tissues of the body. These vitamins build up and remain for a longer time in the body than water-soluble vitamins. Taking too many vitamins without food or water isn't healthy, and is not giving your body is proper nutrition levels!!
I hope this helps! :)