Answer:
The cell membrane is important to the health of a cell because it provides protection to the cell.
Explanation:
(The cell membrane is the outer covering of the cell)
in receptor-mediated endocytosis, where are the receptors that bind specific molecules located immediately following endocytosis?
The receptors that bind specific molecules located immediately following endocytosis are present on the inside surface of the vesicle.
What are endocytosis?The process of engulfing the substance by breaking the cell membrane is called endocytosis.
Endocytosis is a way substances can enter a cell. That is the very definition of it. Endocytosis is the way that certain substances enter the cell. There are three types: receptor-mediated endocytosis, phagocytosis, and pinocytosis.
2. During endocytosis, an intracellular: vacuole, forms to take in substances. Vacuoles are small vesicles that form when the plasma membrane surrounds a substance that will enter the cell.
Endocytosis may be defined as the cellular process of getting material inside the cells. The materail buds inside the cell, pinched off and taken by the cell. Foreign material and pathogens can be internalized in the cell.
The receptor mediated endocytosis requires the special protein known as clathrin for the internalization of the product. The vesicles forms in this process that contains the material and this material is specific mediated by its receptors. At the end of the process, the receptor move inside the cell and can be recycled for further process.
Thus, the answer is on the inside surface of the vesicle.
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the pedigree represents inheritance of a disease through a human family. what pattern(s) of inheritance could be depicted by the pedigree? filled in symbols
The pedigree represent the Maternal inheritance of the disease .
Pedigree analysis was developed to understand the inheritance of genes from parents to offspring. Pedigree represents inheritance of a disease through a human family.
Two types of pedigree analysis are sex-linked pedigree and autosomal pedigree. Study of pedigree is also important in predicting genetic risks. - It is also used for predicting many genetically inherited disorders such as cystic fibrosis, sickle cell anemia.
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A certain culture of the bacterium Rhodobacter sphaeroides initially has 30 bacteria and is observed to double every 4 hours.
(a) Find an exponential model n(t) = n02t/a
for the number of bacteria in the culture after t hours.
n(t) = (b) Estimate the number of bacteria after 17 hours. (Round your answer to the nearest whole number.)
bacteria
(c) After how many hours will the bacteria count reach 1 million? (Round your answer to one decimal place.)
The amount of bacteria inside the cultures following t hours is predicted by the exponential function n(t) = n02t/a and is 60.1 hours.
A number of bacteria inside the culture following t hours may be predicted using an exponential model, n(t) = n02t/a. n(t) = 30•2t/4
b) how many germs are present after 17 hours.
Microorganism n(17) = 30•217/4 = 571 microorganisms
Will there be one million bacteria (c) hours 1,000,000 = 30•2t/4 100000/3 = 2t/4
100000/3 = 2t/4 log2(100000/3)
15.02467797 = t/4
t equals 60.1.
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xplain why seedless vascular plants have similar environmental restrictions to nonvascular plants despite having an efficient system for water transport.
Non-vascular plants lack differentiated vascular tissues, whereas seedless vascular plants have vascular tissues that transport water and nutrients throughout their bodies.
Plants with no seeds have vascular tissue but no seeds. Keep in mind that vascular tissue is a type of specialized tissue that transports water and nutrients throughout the plant. Because of the development of vascular tissue, these plants were able to grow much taller than nonvascular plants, resulting in the formation of ancient swamp forests. The seedless vascular plants, like nonvascular plants, rely on water during fertilization because the sperm must swim on a layer of moisture to reach the egg. This characteristic restricts both groups to primarily moist environments.
The primary distinction between seed plants and seedless plants is that seedless plants do not carry propagation seeds, whereas seed plants do. Seed plants produce spores through sexual reproduction.
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Describe how the blood prevent excessive?
Blood clotting, or coagulation, is an important process that prevents excessive bleeding when a blood vessel is injured. Platelets (a type of blood cell) and proteins in your plasma (the liquid part of blood) work together to stop the bleeding by forming a clot over the injury. Typically, your body will naturally dissolve the blood clot after the injury has healed. Sometimes, however, clots form on the inside of vessels without an obvious injury or do not dissolve naturally. These situations can be dangerous and require accurate diagnosis and appropriate treatment.
Clots can occur in veins or arteries, which are vessels that are part of the body's circulatory system. While both types of vessels help transport blood throughout the body, they each function differently. Veins are low-pressure vessels that carry deoxygenated blood away from the body's organs and back to the heart. An abnormal clot that forms in a vein may restrict the return of blood to the heart and can result in pain and swelling as the blood gathers behind the clot. Deep vein thrombosis (DVT) is a type of clot that forms in a major vein of the leg or, less commonly, in the arms, pelvis, or other large veins in the body. In some cases, a clot in a vein may detach from its point of origin and travel through the heart to the lungs where it becomes wedged, preventing adequate blood flow. This is called a pulmonary (lung) embolism (PE) and can be extremely dangerous
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Inserting or deleting a nucleotide in a protein-coding sequence produces what type of mutation?.
The insertion or removal of nucleotide bases in amounts that aren't multiples of three is referred to as a frame - shift mutation in the gene.
Describe a mutation example.Cystic fibrosis, hemophilia, & sickle cell disease are examples of hereditary mutations. Throughout a person's life, other changes may occur on their own. Spontaneous, sporadic, or novel mutations are the terms used to describe them. Only a few cells are affected.
What does gene mutation entail?The DNA sequence of a gene is altered to generate a different result, which is known as a genetic mutation. The Genomic dna of that gene is permanently altered. For humans to develop, which is the period of transformation over a number of generations, genetic variances are crucial. In one person, a rare genetic mutation takes place.
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In onion root tips, a new cell wall can be seen as it forms between two daughter cells during which phase of mitosis?.
Answer:
Telophase
Explanation:
The TATA box is. A. a master control gene in eukaryotic organisms. B. a sequence that guides RNA polymerase to bind in the correct spot. C. a part of the lac operon in E.coli.
Answer:
Explanation:
a sequence that guides RNA polymerase to bind in the correct spot
An early science that tried to correlate personality with measurements of parts of a person’s skull is known as ________.
An early science that tried to correlate personality with measurements of parts of a person’s skull is known as Phrenology
In order to anticipate mental characteristics, phrenology measures the size of bumps on the skull. It is predicated on the idea that the brain is the seat of the mind and that different parts of the brain have distinct, specialized tasks.
By the 1840s, phrenology had lost much of its credibility as a scientific hypothesis. This was only partially caused by mounting evidence that refuted phrenology. Phrenologists struggled to locate the mental organs and were never able to agree on the most basic mental organ counts, which ranged from 27 to over 40.
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which ingredient is used to ensure that the sugar does not crystallize when preparing noncrystalline candies? interfering agents seeds sugars emulsifiers
When making non-crystalline sweets, interference agents are employed to prevent the crystallization of the sugar.
Ingredients inhibit ordered crystallization in non-crystalline sweets and interference with crystal development in crystalline candy. Interfering agents are the name for these components.
When added to sugar syrup, the interfering agents are known as the substance because they encourage the growth of little crystals while inhibiting the growth of large crystals. These obstructing substances give the candy a waxy and chewy texture.
Creaming is made easier and recrystallization is prevented by the fat and protein found in candy ingredients including milk, butter, egg, cream, chocolate, and cold gelatin.
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a sinus infection, or sinusitis, can occur when mucus doesn't properly drain from the paransasal sinuses. it accumulates and can become a breeding ground for bacteria. which cranial bones contain sinuses?
The cranial bones that contain the sinuses are: Frontal, maxillary, sphenoid, and ethmoid bones.
Cranial bones are the ones that form the head / skull. These bones protect the brain and also provide structural support to the facial bones. The different cranial bones are: the frontal bone, two parietal bones, two temporal bones, the occipital bone, the sphenoid bone, and the ethmoid bone.
Sinuses are the cavities present in the bone that are the air filled pockets, present near the nasal passage. The location of sinuses are: behind the forehead, nasal bones, cheeks, and eyes. For healthy sinuses, there should be no presence of any pathogens and germs.
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bacteria produce many restriction endonucleases. what prevents these enzymes for degrading the hosts dna
Bacteria protect their DNA from restriction enzymes by modifying their recognition sequences.
A bacterial protein termed restriction enzyme, also known as restriction endonuclease, cleaves DNA at specified locations along the molecule. Restrictions enzymes cleave foreign DNA inside the bacterial cell, killing off infected organisms.
When a restriction endonuclease detects a sequence, it catalyzes the hydrolysis of the bond between neighboring nucleotides, which is the splitting of a chemical bond by the addition of a water molecule, to sever the DNA molecule.
Bacteria disguise their recognition sequences to stop this kind of DNA degradation from happening to their own DNA. Methylases are enzymes that modify and shield the recognition sequence from the endonuclease by adding methyl groups (—CH3) to adenine or cytosine bases. The restriction-modification system of a bacterial species is made up of the restriction enzyme and its related methylase.
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what is the cell cycle for thyroid cancer
Answer:
Thyroid cancer happens when cells in the thyroid develop changes in their DNA. A cell's DNA contains the instructions that tell the cell what to do. The changes, which doctors call mutations, tell the cells to grow and multiply rapidly. The cells go on living when healthy cells would naturally die.
Explanation:
Do humans depend on photosynthesis?
A: No, humans cannot make food by photosynthesis, so they do not depend on photosynthesis for energy.
B: Yes, all of the food consumed by humans is plants or gets energy from plants, and plants produce their own food through photosynthesis.
C: Yes, but only those humans that avoid meat depend on plants that produce their own food through photosynthesis.
D: No, humans rely on animals for food, and neither humans nor animals depend on photosynthesis for food.
Answer:
B
Explanation:
Trust me
which of the following statements about diploblasts and triploblasts is false? group of answer choices the endoderm gives rise to the lining of the digestive tract and the respiratory tract. in triploblastic animals, the mesoderm gives rise to the fur and feathers. animals that display bilateral symmetry are triploblasts. animals that display radial symmetry are diploblasts.
The mesoderm gives rise to the fur and feathers is false statement.
The embryo of animals acquires their fundamental cell layers by a process called gastrulation. The cell layers formed are ectoderm, endoderm and mesoderm. These three layers will form different organs by organogenesis. Those animals with all the three cell layers are called triploblast. Members of porifera, cnideria, and ctenophore have only two cell layers; ectoderm and endoderm and are called Diploblast.Animals with two cell layers are called Diploblast. All members with Diploblast show radial symmetry. Porifera with no symmetry are also considered as Diploblast.Animals with bilateral symmetry belong to triploblast. All members of bilateral symmetry have triploblast cell layers.The endoderm cell layer is the innermost germ layer. It will give rise to respiratory tract as well as digestive tract.To know more about Diploblast check below link:
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Which principle of natural selection is described as 'organisms have different traits within a population'. overproduction, differential reproduction, genetic variation , struggle to survive
Three factors inevitably lead to natural selection: most qualities are inherited, more offspring are generated than can survive, and kids with more advantageous traits will endure and create more offspring than those with less advantageous traits.
What is the impact of natural selection in genetic variation?An evolutionary mechanism is natural selection. Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success.
As it can result in adaptation and variation in a species, overproduction is sometimes referred to as a driving factor in natural selection.
Therefore, Over time, this mechanism leads to the evolution and divergence of species.
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During mitosis, it is necessary for the nuclear envelope of the parent cell to disintegrate. If the enzyme responsible for this is inhibited, at which phase of mitosis are cells likely to arrest?.
If the enzyme in charge of that phosphorylation event is suppressed, cells are likely to arrest at the prometaphase stage of mitosis.
The nuclear membrane separates, the nucleolus vanishes, and the chromosomes condense during prophase. The cyclin-dependent kinase causes the nuclear envelope to split during the first phase of mitosis.
INM protein phosphorylation changes how chromatin interacts with these proteins. Sister chromatid segregation requires nuclear envelope collapse. The nuclear envelope, a bilayer membrane, surrounds the nucleus. The nucleus is the largest single organelle in a cell.
The nuclear envelope isolates the nucleus' contents from the cell's exterior. The chromosomes contain the genes for the organism. At the start of mitosis, the cyclin-dependent kinase causes the nuclear envelope to disassemble.
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motor pathways for the control of skeletal muscles, like the diaphragm and external intercostal muscles, exhibit what kind of neuronal organization?
Motor pathways for the control of skeletal muscles, like the diaphragm and external intercostal muscles, exhibit convergence neuronal organization.
Phrenic Motor Neurons
Innervation of the diaphragm muscle presentations a somatotopic organization. The rostral cervical segments of the phrenic motor neuron pool innervates the ventral place of the costal and crural regions of the diaphragm muscle.
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We can use a punnett square to predict the outcome of self-fertilization for the f1 hybrids of a monohybrid cross. In this case, the punnett square should be set up as a blank______ square.
We can use a punnett square to predict the outcome of self-fertilization for the f1 hybrids of a monohybrid cross. In this case, the punnett square should be set up as a 2x2 square.
The Punnett square expresses the likelihood of having children with various genotypes and traits through the representation of crossings between different people.
These crossovers result in various gamete combinations depending on the alleles involved. Keep in mind that each gamete has an allele of one of the relevant genes.
It is assumed that when we speak of monohybrid crossings, we are referring to a single diallelic gene that codes for a single characteristic. The Punnett squares used to illustrate this cross will have two rows and two columns because there are two alleles involved. Punnett square dimensions are 2 by 2.
For the f1 hybrids of a monohybrid cross, self-fertilization may be predicted using a punnett square.
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platelets function in platelets function in initiating the clotting process. contraction after clot formation. forming temporary patches in injured areas. transporting chemicals important for clotting. all of the answers are correct.
Platelets function is all the given options:
initiating the clotting process.contraction after clot formation.forming temporary patches in injured areas.transporting chemicals important for clotting.Platelets are the type of blood cells present dissolved in the blood. They are also called thrombocytes. The most important function of platelets if to prevent blood flow by its clotting. A low platelet count can lead to internal bleeding.
Clotting is the process of preventing blood flow by the solidification of blood at the site of injury. The solid mass of blood is called the clot. Along with blood is present many other components like proteins, white blood cells, etc.
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Both mitosis and meiosis occur in the cells of your body. Select two the ways that these processes are the same.
A
The processes are both types of reproduction.
B
The number of cells produced by these processes are the same.
C
The cells produced by these processes are identical to the original cell.
D
The genetic information is copied and placed into daughter cells in both processes.
if there are twelve different intermediate products produced in the stages of a metabolic pathway within a cell, we can estimate that there are:
There are roughly 12 enzymes, one of which is in charge of each step in the metabolic pathway.
Coenzymes are the name given to these group-transfer intermediates. Each type of group-transfer processes is carried out by a specific coenzyme, which serves as both the substrate and the final product of a pair of enzymes. As a result, these coenzymes are continuously produced, used, and recycled.
End-product inhibition is a mechanism that frequently controls the activity of enzymes at the junctions of metabolic pathways. One of the byproducts of a divergent pathway inhibits the path leading to the production of this inhibitor, which is a type of negative feedback inhibition.
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How many degrees of freedom are there in a chi-squared analysis of phenotype frequencies in the offspring from a dihybrid cross?.
Three degrees of freedom are there in a chi-squared analysis of phenotype frequencies in the offspring from a dihybrid cross
What is degrees of freedom ?Degrees of freedom are the maximum number of logically independent, or potentially different, values in the sample of data. By deducting one from the number of items in the data sample, degrees of freedom are calculated.
The maximum number of logically independent values, or numerical freedom of variance, in sample data is referred to as degrees of freedom. When discussing various mathematical hypothesis testing techniques, such as chi-square, degrees of freedom are frequently brought up. 4.Learn more about Degrees of freedom here:
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When the seed of a tree first starts to grow, what would happen if the cells did not differentiate?.
when do spindle fibers attach to chromosomes during mitosis?
after chromosomes split into chromatids
before chromosomes have condensed
after chromosomes line up at the cell's equator
when chromosomes are being copied
During the Metaphase stage, after the chromosomes line up at the cell's equator the spindle fibers attach to the chromosomes during the mitosis of cell. Thus, the correct option is C.
What are Spindle fibers?Spindle fibers form a protein structure which results in division of the genetic material in a cell. The spindle fiber is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both the types of nuclear division: mitosis as well as meiosis.
Spindle fibers are first visible during the prophase of cell division. It is the first stage of mitosis. During this phase, chromosomes condense and become visible and the spindle fibers emerge from centrosomes. During metaphase stage, the spindle fibers attach to the centromere of each pair of sister chromatids. The sister chromatids line up at the equator (meta-plate), or the center of the cell.
Therefore, the correct option is C.
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a tesla has a mass of 1300 kg if a net force of 25n is put on the car what is the acceleration
Answer:
Acceleration, Force, and Mass
A change in an object’s motion—such as Zeke speeding up on his skateboard—is called acceleration. Acceleration occurs whenever an object is acted upon by an unbalanced force. The greater the net force acting on the object, the greater its acceleration will be, but the mass of the object also affects its acceleration. The smaller its mass is, the greater its acceleration for a given amount of force. Newton’s second law of motion summarizes these relationships. According to this law, the acceleration of an object equals the net force acting on it divided by its mass. This can be represented by the equation:
Sort the examples and descriptions into two categories: density-dependent limiting factors and density-independent limiting factors.
The population’s size is constrained by limiting forces. Abiotic and biotic variables, such as the existence of predators, are examples of limiting factors (e.g., water resources).
Density-dependent While independent factors are unrelated to a population’s density, limiting factors have an impact on a population’s size as a function of density.The following are the density-dependent limiting factors:Competition Disease and parasitism as a region’s population grows, so does the population’s density, which amplifies their effects.The population size is affected by factors dependent on population density by altering the rate of reproduction and survival.Environmental extremes (such as a hurricane or drought) These factors typically have an impact on both small, dispersed populations and big, dense populations because they have an impact on all populations residing in a given area.
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Which statement best describes an environmental consequence of unsealed landfills?
A. Materials in landfills undergo decomposition for hundreds of years.
B. Heavy metals are released as leachate into surrounding waterways.
C. Long-term exposure to mercury and lead in landfills can cause cancers.
D. Landfills can produce carbon dioxide that leak into the atmosphere.
Landfills can produce CO2 that leaks into the atmosphere.
The contaminants in landfill leachate build up and have a negative impact on the ecology and food chains, which may cause genotoxicity, acute toxicity, and cancer in humans.
What about landfills?A method of rubbish disposal where waste is buried under layers of soil to raise low-lying terrain.Solid waste is disposed of in well-managed, well-engineered landfills nowadays.So as to assure compliance with federal rules, landfills are strategically placed, planned, managed, and monitored.Additionally, they're made to safeguard the environment against toxins that might be found in the waste stream.While "whole filled with rubbish" might be your first impression when you hear the phrase, landfills are frequently just a way of stabilizing the ground for construction.Garbage dumps are sometimes mentioned as landfills, even when they are not physical pits that are filled and covered.A big pollutant source with a host of unfavorable consequences.In landfills, trash decomposes very slowly and poses an issue for future generations.Toxins, leachate, and greenhouse emissions from landfills are the three primary issues.Landfills may emit offensive odors, and waste gas may seep through the bottom and gather in surrounding structures.Ammonia, sulfides, methane, and CO2 are the landfill gasses that cause the most worry.The majority of landfill smells are caused by ammonia and hydrogen sulfide.Learn more about landfills here:
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All organisms are composed of one or more cell
TRUE
or
FALSE
Answer:
True
Explanation:
All living things have atleast one or more cell
Describe the one-gene, one polypeptide hypothesis and list some of the evidence in favor of it.
Genes specify the structure of enzymes, and each gene encodes the structure of one enzyme .
Many genes accounted for single polypeptide chains of a protein comprised of multiple chains. It states that the function of an individual gene is to made the production of a specific enzyme.
Scientist name Beadle and Tatum proposed this after demonstrating the relationship between genes and enzymes through experiments with Neurospora, which was mutated and grown on different growth mediums. Hence, one gene-one polypeptide hypothesis states that one gene controls the production of only one polypeptide chain of an enzyme molecule.
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