Myelin is a lipid-made substance that surrounds the axons of some neurons. This myelin sheath acts as an electrical insulator and speeds up the propagation of the action potentials inside the neurons' axons.
The complimentary base strands for TGA CAA CGA GGT ACT are
Chargaff's rule, also known as the complementary base pairing rule, states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.
Explanation:Complementary base pairs refer to the nitrogenous bases adenine, thymine, cytosine, and guanine. in a double strand of DNA, adenine will always pair with its complement thymine and cytosine will always pair with its complement guanine. This means that the two strands are complementary to each other. For example, a strand of DNA with a nucleotide sequence of AGTCATGA will have a complementary strand with the sequence TCAGTACT.
Can someone help me pls, i have another 3 questions like this :s
Answer:
Explanation:
Convection: The process by which heat is transferred through movement of particles.
Steam from teapot
Magma towards earth's surface
Conduction: Process by which heat is transferred because objects are in contact. There is no movement of particles.
A person's skin after shower
Radiation: Heat transfer through waves or rays
Microwave oven boiling water
How do viruses cause damage to host cells they infect?
I think it is Option B.
Explanation:A virus must use cell processes to replicate. The viral replication cycle can produce dramatic biochemical and structural changes in the host cell, which may cause cell damage. These changes, called cytopathic (causing cell damage) effects, can change cell functions or even destroy the cell.
Answer:
I think the answer for that question is B
In what way does the dialysis tubing represent the cell?
Answer:
The dialysis tubing itself represents the cell membrane.
Explanation:
When the dialysis tubing is filled with liquid the entire system is supposed to represent a cell. The solution inside the dialysis tubing represents the concentration inside the cell.
Does someone know the answer to this question? Having difficulties on it.
Based on the diagram above which shows a model of the water cycle, letter X represents: A. the water table.
What is a water cycle?A water cycle is also referred to as hydrologic cycle and it can be defined as a biogeochemical process that is used to describe the continuous movement of water on land, in the atmosphere, and below the surface of planet Earth.
In Science, a water table is also referred to groundwater table and it simply describes the topmost portion of the underground zone on planet Earth that is usually saturated with water.
Based on scientific research and experiments, we can reasonably infer and logically deduce that the water table is represented by letter x in this diagram which shows a model of the water cycle
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Complete Question:
The diagram below shows a model of the water cycle. Letters A through F represent some processes of the water cycle. Letter X indicates the top of the underground zone that is saturated with water.
What does letter X represent?
answer choices
the water table
a flood plain
sea level
impermeable rock
(20)Select the type of inheritance pattern that is best described below:
There are three different alleles for a blood group –IA, IB, and i – but an individual has only two at a time:
a
Pleiotropy
b
Incomplete Dominance
c
Codominance
d
Polygenic Inheritance
e
Multiple Alleles
Type of inheritance pattern that is best described below is Multiple Alleles.
Multiple alleles are the alternative forms of the same gene so they influence the same trait. The wild-type allele is mostly dominant over the mutant alleles.
Multiple alleles exist in a population when there are many variations of a gene present. In organisms with two copies of every gene, also known as diploid organisms, each organism has the ability to express two alleles at the same time. They can be the same allele, which is called a homozygous genotype. Multiple allelism, occurs when more than two gene forms exist for the same locus.
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List four different Bible phrases that show how the Bible claims to be the Word of God.
40-point mark as brainly
Answer: 1. God created the heavens and the earth. 2. He sent his son to die for our sins. 3. he preforms mericles. 4. He Arose from the grave.
Explanation:
All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be competent, equipped for every good work. (2 Timothy 3:16-17)
It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life. (John 6:63)
Every word of God proves true; he is a shield to those who take refuge in him. (Proverbs 30:5)
For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart. (Hebrews 4:12)
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scientists found an animal skull during an excavation and tested the amount of carbon-14 left in it. they found that 55 percent of the carbon-14 in the skull remained. how many years ago was the animal buried?
Animal was buried 4821 years ago.
The properties of radiocarbon, a radioactive isotope of carbon, can be used to determine an object's age using radiocarbon dating, which is also known as carbon dating or carbon-14 dating.
55% Carbon-14 is left in the skull.
If A₀ was the original amount of Carbon, the amount of Carbon that is remaining will be 55% of A₀ which equals 0.55A₀
Using the given equation:
[tex]A = A_{O} e^{-0.000124t} \\\\0.55A_{O} = A_{O}e^{-0.000124t} \\\\0.55 = e^{-0.000124t} \\\\ln(0.55) = ln( e^{-0.000124t} )\\\\ln(0.55) = -0.000124t * ln(e) \\\\ln(0.55) = -0.000124t\\\\t = \frac{ln(0.55)}{-0.000124t} \\\\t = 4821[/tex]
hence, option D is correct, the animal was buried 4821 years ago.
Scientists found an animal skull during an excavation and tested the amount of carbon-14 left in it. They found that 55 percent of the carbon-14 in the skull remained. How many years ago was the animal buried? Round your answer to nearest whole number. (Hint: A = A0e-0.000124t.)
A) 443,548 years
B) 362,903 years
C) 6,439 years
D) 4,821 years
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In eukaryotes, the oxygen-requiring reactions of aerobic cellular respiration occur in cellular organelles called.
In eukaryotes, the oxygen-requiring reactions of aerobic cellular respiration occur in cellular organelles called mitochondria.
The process through which food, in the form of sugar (glucose), is converted into energy within cells is known as cellular respiration. The oxygen-dependent phases of aerobic cellular respiration occur in mitochondria in eukaryotes. Mitochondria can be found in almost all plant and animal cells. Due to this function of mitochondria, they are also called the power houses of the cell.
While the majority of anaerobic, specifically without oxygen, and aerobic, that occurs in the presence of oxygen, respiration respectively occurs in the cytoplasm and mitochondria of the cell, respectively.
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How can local sensing be beneficial in your everyday life?
Answer:
Experimentación con mezclas. Homogéneas y heterogéneas. Métodos de separación de mezclas con base en las propiedades físicas de sus componentes
Explanation:
Atoms transfer from non living portions of our environment to the living part of our environment through the
Atoms transfer from non living portions of our environment to the living part of our environment through Food chain .
Physical and chemical processes move atoms through ecosystems. Organisms acquire the atoms they need from the ecosystem in which they live.
Plants consume nitrogen through their roots. Animals obtain nitrogen compounds when they eat the plants. When plants and animals die or when animals excrete wastes, the nitrogen compounds in the organic matter reenter the soil where they are broken down by microorganisms, known as decomposers. The nitrogen cycle involves three major steps nitrogen fixation, nitrification, and denitrification. It is a cycle within the biosphere which involves the atmosphere, hydrosphere, and lithosphere.
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Which sentence best describes a rattlesnake as a living system that is one
part of a more complex system?
OA. A rattlesnake can eat multiple mice in a single day.
B. A rattlesnake will shed its skin often as it grows.
C. A rattlesnake can give birth to ten young snakes at once.
OD. A rattlesnake lives in the desert with other snakes.
The statement that best describes a rattlesnake as a living system is one part of a more complex system a rattlesnake will shed its skin often as it grows. Thus, the correct option for this question is B.
What are the characteristics of the living system?The characteristics of the living system are as follows:
They possess a high level of compartmentalization.They stimulate systematic growth and division.Living systems are known for information processing.They also conduct energy transduction.They possess a high level of adaptability.A rattlesnake can eat multiple mice in a single day must deal with the mode of nutrition and eating plan. While giving birth to ten young snakes at once follows a reproductive pattern. Living in the desert with other snakes reveals its level of adaptation and survival.
Therefore, the statement that best describes a rattlesnake as a living system is one part of a more complex system a rattlesnake will shed its skin often as it grows. Thus, the correct option for this question is B.
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Answer: A rattlesnake lives in the desert with other snakes.
Explanation: took the test
Which of the following could lead to the formation of a jet stream?
Winds fall from the high atmosphere
A decrease in radiation from the sun
Large warm and cold air masses meeting
Slowing conduction from the ground
Answer:
Large warm and cold air masses meeting
Explanation:
Jet streams are formed by warm and cold air masses meeting in the atmosphere.
What are the different functions of the pancreas, and how is the pancreas directly related to digestion?.
The pancreas are associated with both exocrine and endocrine functions and they are directly related to digestion as they secrete pancreatic juice into the small intestine.
Pancreas is the organ whose major function can be characterized as the conversion of energy in the food into a form that can be used by the body of an organism.
The endocrine function of the pancreas is associated with regulating the sugar levels in the blood. On the other hand, the exocrine function of the pancreas is associated with the digestion process.
Pancreas is directly related to the digestion process because pancreatic juice is released into the duodenum region of the small intestine. The pancreatic juice contains digestive enzymes for the breakdown of food.
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suppose a young boy is always tired and fatigued, suffering from a metabolic disease. which of the following organelles is most likely involved in this disease? mitochondria golgi apparatus ribosomes lysosomes
Option (A), the mitochondria, is the organelle that is most likely involved in this condition.
What are Mitochondria?Most eukaryotic species contain an organelle called a mitochondrion, which has two membranes.
The primary method through which mitochondria manufacture adenosine triphosphate, a chemical energy source for cells, is through aerobic respiration.
The mitochondria, which are membrane-secure cell organelles (mitochondrion, singular), create the most chemical energy to power the cellular metabolic reactions.
The mitochondria in cells are the mechanisms responsible for converting dietary energy into a form the cell can use.
Each cell contains countless hundreds of thousands of mitochondria.
The mitochondria, which are membrane-bound cell organelles, generate the majority of the chemical energy needed to power a cell's metabolic processes (mitochondrion, singular).
The small molecule adenosine triphosphate serves as a reservoir for the chemical energy produced by the mitochondria (ATP).
Therefore, option (A), the mitochondria, is the organelle that is most likely involved in this condition.
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when mendel crossed yellow-seeded and green-seeded pea plants, all the offspring were yellow seeded. when he allowed these f1 yellow-seeded plants to self-fertilize, he observed both yellow and green seeds among the f2 generation. this experiment and observations illustrate the principle(s) of:
This experiment and the results demonstrate the idea of recessive traits, in accordance with Mendel.
What was Mendel famous for?Gregor Mendel uncovered the basic principles of inheritance through his study on pea plants. He concluded that genes are inherited from each parent as separate, paired units. Mendel observed how parental genes separated and if they showed up as dominant or recessive qualities in the children.
What are the 4 laws of Mendel?(1) Paired Factors Principles
(2) The Dominance Principle
(3) Mendel's First Law of Inheritance, often known as the Law of Segregation or the Law of Purity of Gametes
(4) Mendel's Second Law of Inheritance, also known as the Law of Independent Assortment.
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What will be the advantages and disadvantages if the world was covered in water?
Answer:
1) no water loss from evaporation
2)less temperature fluctuation
3)less light, so predators can't see them
4)avoid competition w/ terrestrial species
which factor contributes to both chemical and mechanical weathering
Answer: The factor which contributes to both chemical and mechanical weathering is water.
Explanation:
What is chemical weathering?
Chemical weathering is the erosion or disintegration of rocks, of soil materials, by chemical reactions.
The major factor contributing to chemical weathering is water and minerals dissolved in it while mechanical weathering such as abrasion, freezing etc, is also caused by water.
Thus, we can conclude that, the factor which contributes to both chemical and mechanical weathering is water.
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What famous geneticist worked in a monastery studying pea plants
Answer:
Explanation:
Gregor Mendel
craniosynostosis is a condition in which one or more of the fontanelles is replaced by abone prematurely. discuss the ramification of this early closure.
Fontanelles frequently close earlier than expected due to achondroplasia, a hereditary condition that affects bone and cartilage development. Hypothyroidism: A thyroid gland disorder that interferes with hormone production. the Down syndrome.
Why is fontanellues early closure?A premature closure of this suture results in the baby's head becoming long and narrow (scaphocephaly). The most typical kind of craniosynostosis is this one. Right and left coronal sutures travel from each ear to the sagittal suture at the top of the skull in a condition known as coronal synostosis.
Fontanelles frequently close earlier than expected due to achondroplasia, a hereditary condition that affects bone and cartilage development. Hypothyroidism: A thyroid gland disorder that interferes with hormone production. the Down syndrome.
By 1 or 2 months of age, the posterior fontanelle normally closes. It might have been closed before birth. Usually, the anterior fontanelle shuts between the ages of 9 and 18 months. The development and expansion of the infant's brain depend on the sutures and fontanelles.
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lipids that form membranes have what kind of structure? completely polar, which allows them to dissolve in water. polar heads and polar tails, which allows them to interact with water on both sides of the membrane. polar heads and nonpolar tails; the nonpolar tails interact with water. polar heads and nonpolar tails; the polar heads interact with water.
The lipids that form the membranes have the structure, polar heads and nonpolar tails; polar heads interact with water.
What is the main feature of lipids?The insolubility in water is the main characteristic of lipids. As they are non-polar compounds, water, being polar, has no influence on their structure. On the other hand, they are soluble in organic solvents such as alcohols, ethers and ketones.
What are the simplest units of lipids?Some types of lipids are built from fatty acids. Saturated and unsaturated fatty acid. The simplest are triglycerides, or triacylglycerols, which are composed of three fatty acids, joined with ester bonds to glycerol.
Despide these, all lipids have these common characterstics:
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what is the diagnostic term for the condition that results whenever the tissue surrounding the kidney fails to anchor it to nearby structures and the kidney droops?
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What number is water on a pH scale?
Answer: 7
Explanation:
neutral
Can someone help me understand this question
Answer:
Explanation: The names of the compounds given are really large and complex molecules. They are asking for the building blocks of these molecules which is what the complex molecules are made of. One is given (glucose). They are also asking for the function of the building blocks, which means what is the building block of each molecule needed for in a human body. And the examples of those building blocks and functions.
in a certain species of diploid fish a single gene controls skin color. researchers have found four different alleles of this gene within the fish population. how many different gamete genotypes are possible in an individual of this species?
There are two gamete genotypes that are possible in an individual of this species.
One copy of each pair of chromosomes comes from the individual's mother and the other copy from the individual's father. Since we have two copies of each chromosome, he has two copies of each gene. According to Mendel's law of segregation, a diploid organism passes randomly selected alleles for a trait to offspring, so the offspring receives one allele of her from each parent.
Individuals and all diploid organisms can only have two alleles for a given gene, but multiple alleles can exist at the population level, and within populations, Different individuals can have different pairs of these alleles. If two alleles are the same, the individual is homozygous for that allele. If the alleles are different, the individual is heterozygous.
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posttranslational alterations of proteins do not include the cleavage of signal sequences. do not include the addition of polysaccharides to proteins. do not affect the activity of an enzyme. may include the addition of polysaccharides to proteins. do not include the addition of phosphate groups.
The posttranslational alterations of proteins may include the addition of polysaccharides to proteins (Option 4).
What are posttranslational alterations of proteins?The posttranslational alterations of proteins are different modifications in the protein sequences in order to activate their functions and or suppress them.
One of the most common posttranslational alterations of proteins is phosphorylation, which occurs at specific amino acid residues and it is able to activate or deactivate proteins in order to change the signaling pathway associated with their functions. Polysaccharides can also be added to proteins in order to change their functional states.
Therefore, with this data, we can see that the posttranslational alterations of proteins are able to modify the functional properties of a protein and polysaccharide addition in one of these types of modifications that both structural proteins and enzymes suffer to activate an or deactivate them.
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The hypothalamus sends messages through both the nervous system and the endocrine system. please select the best answer from the choices provided t f
The statement the hypothalamus sends messages through both the nervous system and the endocrine system is true.
The hypothalamus can be described as the part of the brain that is actively involved in the maintenance of homeostasis i.e internal conditions of the body.
The hypothalamus is responsible for communicating with the endocrine and nervous systems through the pituitary gland.
The hypothalamus sends messages through the endocrine system releasing hormones. These hormones are sent to the anterior and posterior pituitary.
The hypothalamus sends messages through the nervous system through nerve impulses for the regulation of internal body conditions.
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of all the mutations that occur in a population, why do only a small fraction become widespread and affect the average phenotype of the population? a. most occur in tissue that does not lead to gamete formation b. most occur in tissue that leads to gamete formation c. most that affect phenotypes are deleterious d. most that affect phenotypes are beneficial
Of all the mutations that occur in a population, only a small fraction become widespread and affect the average phenotype of the population because a. most occur in tissue that does not lead to gamete formation.
Mostly, a mutation occurs in the somatic cells of the body of an organism. These kinds of mutations that occur in the somatic cells will not be transformed from parents to children as genes from the gamete cells are transferred from the parents to the offspring.
Hence, if a mutation occurs in the somatic cell then it is reserved to that individual organism.
However, if a mutation occurs in the cells that leads to gamete formation then such a mutation will be carried on from the parent to an offspring. Hence, only a small fraction of the mutations become widespread and the ones that occur in the non-gamete-forming tissues are lost.
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explain what eutrophication means; describe the processes leading to eutrophication in words; determine the limiting nutrient; calculate algae production from the limiting nutrient; and discuss appropriate approaches to minimize eutrophication based on the limiting nutrient.
Eutrophication is the system by way of which an entire frame of water, or parts of it, becomes progressively enriched with minerals and nutrients.
Especially nitrogen and phosphorus. It has also been defined as a nutrient-precipitated boom in phytoplankton productiveness. Eutrophication is a herbal manner that results from the accumulation of vitamins in lakes or other bodies of water. Algae that feed on nutrients develop into the water floor, decreasing value and water intake pipes.
Nutrient enrichment happens due to runoff from agricultural fields and so on. The rapid increase of algae and different plankton resulted in an algal bloom. Dissolved oxygen depletion and toxin era. Aquatic species die because of the loss of oxygen and manufacturing.
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cilia and flagella move...
In opposite directions of the cell membrane
When the bending of microtubules is powered by ATP
In the same direction of the cell membrane
When the contractions of the basal body triplets are powered by ATP
When the central pair of microtubules produce ATP
Cilia and flagella move when the bending of microtubules is powered by ATP. Option B.
What are cilia and flagella?Cilia and Flagella are mobile organs. They might vary in shape, length, and number, but their main function is the same. Cells use them to move in a liquid environment.
Notice that they can also have other functions, like being sensory structures and catching food.
Motion in Cilia and flagella produced by the sliding of some pairs of microtubules over others. The slides occur because of the provision of ATP from mitochondria.
Cilia and flagella move when the bending of microtubules is powered by ATP. Option B.
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