Is arteriosclerosis the same as hypertension?
Where do silent mutations occur?
Silent mutations occur when the change of the DNA sequence within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the protein.
This change typically takes place at the third position of the codon also known as the wobble position. A stretch of very highly conserved silent mutation sites occurs, on average, once every 10,000 to 15,000 nucleotides of gene sequence. We estimate that between 5 and 10 percent of human genes contain at least one region where silent mutations could be harmful.
A thymine is actually changed to a cytosine at the DNA level by the silent mutation. This mutation may have resulted through a replication error in the DNA or from a type of repair carried out after the DNA was damaged.
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Are mutations passed onto offspring?
which of these is the most fit? a. a 5,000-year-old bristlecone pine tree that produced 1 offspring every 100 years b. a 5,000-year-old bristlecone pine tree that produced 3 offspring every 100 years c. a 3,000-year-old bristlecone pine tree that produced 100 offspring every 100 years d. a 2,000-year-old bristlecone pine tree that produced 100 offspring every 10 years e. a 500-year-old bristlecone pine tree that produced 100 offspring every year
The best suitable tree was a 500-year-old bristlecone pine tree that annually generated 100 offspring.
Does the Methuselah tree still exist?The largest tree on the earth in terms of volume is General Sherman, located in Sequoia National Park. And Methuselah, an estimated 4,855-year-old bristlecone pine in east-central California, is usually regarded as the world's oldest living tree.
Do any trees date back a thousand years?Scientists have figured out the key to the ginkgo tree's longevity of more than a thousand years. According to a study, the tree produces chemical defenses to ward off illnesses and dryness. Additionally, unlike many other plants, when a plant reaches adulthood, its genes are not preprogrammed to start an unstoppable decline.
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What does the suffix sclerosis mean in the term arteriosclerosis?
Suffix sclerosis is a condition in which a person's body becomes unusually hard.
Describe sclerosis.When a person has sclerosis, their body becomes extremely hard.
An excessively high-cholesterol diet might cause sclerosis of the arteries.
In many cases of sclerosis, the gradual replacement of soft connective tissue with stiffer connective tissue results in the hardening of tissue in organs, nerves, or arteries. One of the most common varieties of sclerosis is multiple sclerosis or MS. This disease affects the nerve cells in the brain and spinal cord. Eventually, those who have multiple sclerosis have symptoms such as numbness, poor coordination, and others. The Greek word for "hard" is skleros.
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FILL IN THE BLANK. most of the growth of a plant body is the result of __________.
Answer:
the expansion of the vacuole.
Nucleotide
Phosphate
Hydrogen Bond
Deoxyribose
The phrase "Polypeptide (protein) composed up of amino acids" is what identifies the DNA segment with the letter "X" in it.
What are the parts of a DNA?The phrase "Polypeptide (protein) composed up of amino acids" is what identifies the DNA segment with the letter "X" in it.The DNA is often found inside the nucleus, not outside, as the diagram shows.Therefore, since X is outside, DNA cannot be the cause.Since mRNA, or messenger RNA, which is made up of nucleotides, is located at the bottom, it cannot be X. Finally, since X is neither inside the nucleus nor at the bottom, it must be a polypeptide (protein) made up of amino acids. Nucleotides are chemical building units that make up DNA.A phosphate group, a sugar group, and one of four different nitrogen bases make up these building components.Nucleotides are joined together into chains, with the phosphate and sugar groups switching places, to create strands of DNA.To learn more about DNA refer
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Chapter 9: Gender, Gender Identity, Gender expression and sexism
The social and psychological traits that come with being a woman or a man are referred to as gender (McCammon & Knox, 2007, p. 112).
The internal psychological self-concept of being male, female, or maybe a blend of the two is known as gender identity.
Gender expression is the process by which we communicate with others in ways that are specific to our gender, such as through conduct and personality.
The "attitudes, behaviors, rights, and obligations that society connects with" being male or female are known as gender roles (Yarber et al., 2010, p. 127).
The process of communicating what is viewed as appropriate conduct and viewpoints for males and females in a particular society is known as gender-role socialization.
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What are 3 sources that release carbon dioxide?
These sources can be found primarily in three different contexts: industrial processes, natural gas processing, and fuel combustion activities. By far, burning fossil fuels causes carbon to oxidize, which is what causes the biggest CO2 emissions.
Three methods that release carbon are listed.Carbon is released back into the atmosphere, among other things, when animals die, volcanoes erupt, fires burn, and fossil fuels are burned.
What causes the atmosphere's carbon dioxide emissions?CO2, or carbon dioxide Burning fossil fuels (coal, natural gas, and oil), solid waste, trees, and other biological materials release carbon dioxide into the atmosphere, along with some chemical reactions (e.g., manufacture of cement).
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Can 2 alleles produce 4 phenotypes?
We inherit half of our genes (alleles) from ma, & the other half from pa, so we end up with two alleles for every trait in our phenotype. An excellent example of multiple allele inheritance is human blood type. Blood type exists as four possible phenotypes: A, B, AB, & O.
What is An allele?An allele is one of two or more versions of DNA sequence (a single base or a segment of bases) at a given genomic location. An individual inherits two alleles, one from each parent, for any given genomic location where such variation exists. If the two alleles are the same, the individual is homozygous for that allele.
What is phenotypes?In genetics, the phenotype is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological properties, its behavior, and the products of behavior.
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of the electron transfer complexes associated with the inner mitochondrial membrane, which is not involved in generation of a proton gradient?
Of the electron transfer complexes associated with the inner mitochondrial membrane, Complex II is not involved in generation of a proton gradient.
Electron Transport Chain:
This is a set of proteins that are embedded within the inner mitochondrial membrane. This set of proteins are very important for energy production in the cell, it uses high energy electrons from NADH and FADH2 to produce a hydrogen ion gradient, which is later used for ATP production in the cell.
Complex II does NOT contribute directly to the proton gradient in mitochondria.
Rather, this protein's function is to oxidize FADH2. and pass these electrons to coenzyme Q. The other complexes all use electron energy to pump hydrogen ions from the matrix into the intermembrane space. Complex II is also called Succinate-Q-reductase.
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Why is mitosis a longer and more complicated process of cell division than binary fission?(1 point).
Answer: Because bacterial cells have a simpler structure than eukaryotic cells, binary fission is less complex than mitosis.
Explanation: Cell division is the mechanism by which DNA is passed from one generation of cells to the next and ultimately, from parent organisms to their offspring. Although eukaryotes and prokaryotes both engage in cell division, they do so in different ways. In particular, eukaryotic cells divide using the processes of mitosis and meiosis. Mitosis is common to all eukaryotes; during this process, a parent cell splits into two genetically identical daughter cells, each of which contains the same number of chromosomes as the parent cell.
Prokaryotes, which include bacteria, divide their cells using a process known as binary fission, which is not used by eukaryotes. This process shares several characteristics with mitosis, including the need for chromosome replication, segregation of the copied DNA, and cytoplasmic division of the parent cell.
Binary fission is a faster method of cell division than mitosis because it excludes sister chromatids and spindle creation from its process. The four distinct cellular phases that are present in mitosis (from G1 to the final mitotic phase) are not present in binary fission.
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Mitosis is a longer and more complicated process of cell division than binary fission because B. Mitosis has checkpoints that must be met to continue the cycle.
Due to the absence of spindle formation and sister chromatids in binary fission, the mitosis process takes longer than that of binary fission. Asexual reproduction occurs in organisms through mitosis and binary fission. Eukaryotic organisms undergo mitosis, whereas prokaryotic organisms undergo binary fission. Both processes replicate DNA in each of the produced daughter cells, resulting in two identical cells. Eukaryotes, or organisms with a cell nucleus, undergo mitosis; consequently, mitosis requires a nucleus.
As a result, we can say that Mitosis takes longer and is more complicated than binary fission To continue the cycle, mitosis has checkpoints that must be met.
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(complete question)
Why is mitosis a longer and more complicated process of cell division then binary fission?
A.mitosis occurs in the cytoplasm and does not require nucleus
B.mitosis has checkpoints that must be met to continue the cycle
C.binary fission produces two identical daughter cells
D.binary fission does not replicate DNA
What happens during the reduction stage of Calvin cycle?
Answer:
Energy from ATP and electrons from NADPH are used to reduce 3-phosphoglycerate to form G3P molecules (which can be used to form other organic molecules such as glucose).
What are simple examples of homeostasis?
Homeostasis is the ability to maintain internal stability in an organism in response to the environmental changes. The internal temperature of the human body is the best example of homeostasis.
Homeostasis, also known as homoeostasis in the UK, is the stable internal, external, and chemical conditions that are maintained by biological systems.
This is the state of the organism when everything is operating at its best and numerous factors, including fluid balance and body temperature, are maintained within predetermined ranges (homeostatic range).
Despite changes in the environment, nutrition, or level of exercise, other factors such as the pH of extracellular fluid, the concentrations of sodium, potassium, and calcium ions, as well as the blood sugar level, must be controlled.
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Does protease break down protein?
One or more long chains of amino acid residues make up the massive biomolecules and macromolecules known as proteins.
A polypeptide is an ordered collection of residues of amino acids. A protein has at least one lengthy polypeptide in it. Less than 20–30 residue polypeptides are frequently referred to as peptides instead of proteins and are known as short polypeptides. Peptide bonds as well as connections between nearby amino acid residues hold the individual amino acid residues together. The genetic code's encoding of a gene's sequence determines the arrangement of amino acid residues in a protein. However, in some organisms, the genetic code can also include selenocysteine and—in some archaea—pyrrolysine.
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identify the epithelial tissue type pictured below.
Every cell in the single cell layer of a simple epithelium is in direct contact with the basement membrane beneath it.
They will include:
straightforward squamous epitheliumAdipose connective tissue, Cuboidal epitheliumSimple squamous epithelium has a single layer of flat cells that is in contact with the basal lamina. They can be found, among other locations, in the lining of the heart, blood arteries, lymph vessels, and pulmonary air sacs. They consist of a single layer of nucleated flat cells.
Cuboidal epithelium lines tiny channels and tubules. It is connected to both secretion and absorption. They are composed of cells that are cube-shaped and have circular nuclei in the middle or somewhat to the bottom.
Adipocytes make up the connective tissue in adipose tissue. Adipose tissue's main purposes are to store fat and provide insulation. It is located close to internal organs and beneath the skin. The cytoplasm and nucleus are pushed outside by lipid droplets.
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A hot air balloon floats in the air while the torch is on. After the fire is
turned off, the temperature of the gas in the balloon decreases. Which of
the following will happen to the gas pressure inside of the balloon?
a) The pressure will increase
b) The pressure will decrease
c) The volume of the gas will increase
d) None of the above will happen
The balloon is raised by hot air rising inside of it. A gas's pressure is directly correlated with its temperature. Consequently, the pressure rises.
What's the volume of a gas?The area occupied by gaseous particles under normal temperature and pressure circumstances is referred to as the volume of gas. It is identified as a "V." The letter "L" stands for "liters," the SI unit of volume. At normal temperature, a mole of gas has a volume of 24 m3, or 24 000 cm3. The molar volume is the amount of space that one mole of any gas takes up at STP (22.4 L). Take note that the second value of the variable is created by multiplying the first value by fractions of the other two variables. EXAMPLE: At STP, a gas sample takes up 125 mL of space.
How do you calculate the volume of gas and how is volume related to gas?For instance, the formula for calculating the volume of 40 moles of a gas at a temperature of 250 K and a pressure of 1013 hPa is: V = nRT/p = 40 * 8.31446261815324 * 250 / 101300 = 0.82 m3.
A contained gas's pressure will rise when its volume is reduced, and fall when its volume is increased. In actuality, the pressure reduces by the same factor as the volume increases, and vice versa.
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A patient was admitted to the ICU in December 2000 [...]. Based on the data from the study, identify the following:
-The antibiotic that was most likely to be effective for treating the infection
-The antibiotic that was least likely to be effective for treating the infection
Imipenem = most effective has the least resistance (11%) and the second to least change in resistance from 1994 to 2000
Ampicillin = least effective would probably not be effective because it has the highest resistance and some change in resistance from 1994 to 2000
In the middle of the 1970s, Merck researchers Burton Christensen, William Leanza, and Kenneth Wildonger discovered the intravenous -lactam antibiotic imipenem (also known as Primaxin). [1] Carbapenems play a crucial part in the treatment of illnesses that are difficult to treat with other antibiotics because they are extremely resistant to the -lactamase enzymes produced by numerous multiple drug-resistant Gram-negative bacteria.
Imipenem was first patented in 1975 and given medical approval in 1985.
It was identified during a protracted, error-filled search for a more stable form of the naturally occurring substance thienamycin, which is created by the bacteria Streptomyces cattleya. Despite having antibacterial efficacy, thienamycin is unstable in aqueous solution, making it difficult to deliver to patients. [5] Gram-positive and Gram-negative, aerobic and anaerobic bacteria are all susceptible to imipenem's broad spectrum of activity.
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What are 5 ways to Minimise microbial contamination?
The five ways to minimize microbial contamination are sanitation, sterilization, washing food before consumption, drinking plenty of water and ensure sufficient sunlight/ ventilation.
Microbial contamination refers to microbial infestation or inclusion into human body. It can be intentional or unintentional. The major microbes are fungi, yeast, virus or protozoans. They cause diseases which may be fatal for human health. It is important to protect oneself from such infection and some ways can be by ensuring hygiene and cleanliness around our houses and inside the houses too. There should not be any water logging. Vaccination also helps us to fight against several disease causing organisms by introduction of antibodies inside the human body. Drinking water helps to remove dead, weakened organism to be flushed out by urination. Sunlight helps to weaken the organisms by partially deactivating them due to high temperature.
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The principal difference between tropical and temperate rainforests is the amount of precipitation they receive.
true
false
The principal difference between tropical and temperate rainforests is the amount of precipitation they receive. The statement is false.
Rainforests are classified into two types: tropical and temperate. Tropical rainforests are situated closer to the equator, when temperatures are higher. Temperate rainforests can be found near colder coastal locations north or south of the equator.
The tropical rainforest is a hot, damp ecosystem with year-round rain. It is famous for its lush plant canopies that form three distinct levels. The highest layer, or canopy, comprises gigantic trees that may reach heights of 75 meters (approximately 250 feet).
A vast variety of plants from this level are commonly used as houseplants. These plants adapt quickly to residential surroundings due to the limited quantity of sunshine and rainfall they receive. Wet leaves and leaf litter cover the rainforest's lowest layer or floor.
Due to a lack of sunshine, there are few vegetation on the forest floor. However, the hot, wet environment and all of the dead plant debris offer ideal circumstances for bacteria and other microbes to thrive.
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How can you tell if a pea plant is homozygous or heterozygous?
When an organism is heterozygous, it has two distinct alleles of the same gene. For instance, pea plants can have either homozygous dominant (red-red) or heterozygous red blooms (red-white). They are homozygous recessive if they have white blooms (white-white). Heterozygous are always carriers.
The genotype of the pea plant's tallness trait might be homozygous or heterozygous. The genotype of the dwarf plant is homozygous. It is necessary to cross the pea plant with the dwarf plant in order to identify whether it is homozygous tall or heterozygous tall. If all of the progeny from this type of hybrid appear to be tall, the parent pea plant was likely homozygous. It can be said that the tall plant has a heterozygous genotype if the cross between the dwarf and tall pea plants produces an equal number of tall and dwarf offspring. Therefore, we should cross the pea plant with a homozygous dwarf plant to ascertain its genotype.
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What are the 3 main processes of the carbon cycle?
The carbon cycle is continued by respiration, excretion, and decomposition, which release the carbon back into the atmosphere or soil.
Respiration:- Respiration is referred to as a metabolic process in which carbon dioxide is released from the oxidation of complex organic substances and oxygen is taken in by the living cells of an organism to produce energy (in the form of ATP).
Excreting:- Excreting metabolic waste and other harmful substances from the body is a process called excretion.
Decomposition:- The first step in the recycling of nutrients used by an organism (plant or animal) to build its body is decomposition. It is the process by which the dead tissues disintegrate and change into more basic organic forms. Many of the species at the base of ecosystems rely on these as a food source.
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What is an example of settlement patterns?
They are 4 types of example of the consist of compact settlements, semi-compact settlements, and dispersed settlements.Compact Settlements.
Compact settlements have homes clustered together, regularly becoming a member of at the sides. Semi-Compact Settlements. Semi-compact settlements also are known as hamlet settlements.
Dispersed Settlements. Some examples of agreement styles consist of, nucleated settlements, linear settlements and dispersed settlements.
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how does the sodium-potassium pump help maintain the resting membrane potential? choose the correct option. group of answer choices moves potassium against its concentration gradient. moves sodium against its concentration gradient. moves potassium ions in and sodium ions out. moves sodium ions in and potassium ions out.
The sodium-potassium pump maintains the resting membrane potential by moving sodium ions out and potassium ions into the cell membrane.
By exchanging three intracellular potassium ions for two extracellular sodium ions, the sodium-potassium pump contributes to the maintenance of the resting membrane potential.
The sodium-potassium pump constantly progresses three sodium ions are transported out of the cell for every two potassium ions it shifts in. As a result, it retains the huge potassium ion gradient across the membrane, which serves as the foundation for resting membrane potential.
Sodium and potassium ions are moved by the sodium-potassium pump system against huge concentration gradients. It flushes three sodium ions are transported and into the extracellular fluid while moving two potassium ions into the cell where potassium levels are elevated.
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"How has the desert landscape of the Sahara influenced historical migration patterns in Africa?
a. The Sahara Desert has facilitated the spread of disease in Africa.
b. The Sahara Desert has attracted migrants to the area to herd cattle.
c. The Sahara Desert has served as a barrier to travel and migration.
d. The Sahara Desert has served as a highway for immigrants leaving Africa.
"
answer :
b. the sahara desert has attracted
migrants to the area to herd cattle.
The desert landscape of the Sahara influenced historical migration patterns in Africa as c. The Sahara Desert has served as a barrier to travel and migration.
The Sahara Desert can be found in the north along the Tropic of Cancer, while the Namib Desert can be found in the south along the Tropic of Capricorn. The Sahara, which covers a significant portion of northern Africa, serves as a formidable barrier that separates the Muslim, Arab North of the continent from the traditional African cultural groups in the South. In a separate chapter, the cultures and political histories of North Africa and Southwest Asia are discussed together.
The landmass known as Pangaea, the last supercontinent, marks the beginning of Africa's physical geography 300 million years ago. Pangaea broke up around 175 million years ago, drifting and colliding to form the continents we know today. The center of this supercontinent was Africa.
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Explain the purpose of ATP.
ATP synthesized in mitochondria is the primary energy source for important biological functions, such as muscle contraction, nerve impulse transmission, and protein synthesis.
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Which of the choices below is not a part of the hypothalamic-pituitary-gonadal axis? A) hypothalamus. B) anterior pituitary gland. C) thalamus
The choice which is not a part of the hypothalamic-pituitary-gonadal axis is the thalamus.
The correct option is C.
What is the thalamus?The thalamus is described as a paired gray matter structure of the diencephalon located near the center of the brain which is above the midbrain or mesencephalon, allowing for nerve fiber connections to the cerebral cortex in all directions.
The hypothalamic-pituitary-gonadal axis is responsible for regulating reproductive activity and the release of ovarian hormones in animals and humans and is made of the hypothalamus and the anterior pituitary gland.
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forms membranes that cover organs
Epithelial tissue forms the membrane that cover organs.
The epithelium, which is the main tissue in glands, is a type of body tissue that covers all of the internal and external surfaces of your body, lines body cavities, and lines hollow organs.
The human body contains a wide variety of epithelial tissues.They cover every surface of the body, line body cavities and hollow organs, and make up the majority of the tissue in glands. They provide a variety of functions, including defence, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
The form of the cells in simple epithelial tissues serves as a broad classification. Simple squamous, simple cuboidal, simple columnar, and pseudostratified are the four main classes of simple epithelium.
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what is a process in which the stabilizer, neutralizer, or synergist muscles take over for the inhibited prime mover. this can lead to an over use syndrome of that stabilizer, neutralizer, or synergist.
Synergistic dominance is the process by which a stabilizing, neutralizing, or synergistic muscle replaces the role of an inhibited prime mover, leading to overuse syndrome in the stabilizing, neutralizing, or stabilizing muscle.
What is the name of the muscle that works against and counteracts another muscle?An antagonist is a muscle that works in the opposite direction from the prime mover. Two crucial functions of antagonists in muscle function are: They keep their posture, such as holding their arm out or standing straight.
What information can you glean from a muscle's name that contains the word "serratus"?The fan-shaped serratus anterior muscle is located on the lateral thoracic wall. Deep behind the scapula and pectoral muscles, its primary portion is located. It is simple.
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What structure contains the cell bodies of sensory neurons?
Sensory neurons' cell bodies, which transmit information from the outside world to the spinal cord, are found in the dorsal root ganglion.
These neurons are pseudo unipolar and have an axon-like process that divides into two branches, one of which extends toward the spinal cord's grey matter while the other branch travels toward the periphery.
Through the spinal nerve, where they run alongside motor fibers, fibers that are headed towards the periphery leave the ganglion. The dorsal root serves as a conduit for spinal cord-bound fibers. To govern the contraction of a muscle, a motor neuron innervates one or more fibers.
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