It is the dermis, the layer of the skin that lies beneath the epidermis tissue. It has fibroblasts and collagen fibres.
The reticular layer, also known as the deep layer of the dermis, comprises the majority of such a type of connective tissue. Additionally, it can be found in the sclera and deeper skin layers. It is referred to as dense irregular if the collagen fibre bundle in the connective is oriented irregularly. Heart valves, joint capsules, the pericardium, endosteum, periosteum, and deep layers of the skin's dermis all contain or are formed of dense irregular connective tissue. Tough, substantial, fibrous proteins called collagen fibres are present in dense tissues. There are many different varieties, but type I collagen predominates in dense connective tissue.
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What are MHC class I molecules?
Virtually all somatic cells produce MHC class I molecules (MHC-I), which are cell surface recognition molecules. These molecules take peptides made inside the cell as samples.
It is used to alert T lymphocytes and natural killer (NK) cells to the physiological status of the cell. All nucleated cells express MHC class I molecules, which are located on the cell surface and contain peptide fragments originating from intracellular proteins.
These peptides often come from the cell's own "house-keeping" proteins, but in a cell that has been infected by a virus, peptides from viral proteins may also be present. To CD8+ and CD4+ T lymphocytes, respectively, MHC I and II molecules present protein fragments. These molecules, which are crucial for cell-mediated immunity, first arose during the time the adaptive immune system was developing.
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True or false? Exons are regions that do not code for proteins.
It's False. Exons do not encode proteins, contrary to popular belief. Exons are the regions of DNA (or RNA) that encode for proteins.
A section of the genome called an exon is found inside an mRNA molecule. Exons can either be coding or non-coding, depending on whether they contain the instructions needed to make a protein. Exons and introns make up the genes in the genome.
Exons are the segments of mRNA that are spliced together after introns are eliminated by the spliceosome. Introns are non-coding regions of an RNA transcript or the DNA encoding it that are spliced off before the RNA molecule is translated into a protein.
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Do some cell types divide more often than other cell types?
Some cell, like skin cells, divide often. To replenish the cells we lose, we must constantly produce new ones.
What various cell types are there?
Different cell types have various roles. There are two different types of cells based on cellular structure: Cells that are prokaryotic lack a nucleus. As an alternative, some prokaryotes, like bacteria, have a part of the cell in which the genetic information is floating freely. The nucleoid is the name of this area. They are all bacteria with a single cell.
Who has a connection to cells?
Spanish Society of Blood diseases and Hemotherapy (SEHH), Signaling Pathways Society (STS), Nordic Protein catabolism Society (NAS), Society for Stem Cell therapy (Russian Federation) (RPO), and Spanish Society of Molecular Biology and Biochemistry (SEBBM) are connected with Cells and offer member discounts on article processing fees.
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When was the FBN1 gene first discovered?
Answer:
1991 is the correct answer
Explanation:
good
During glycolysis, _____.a. a glucose molecule is broken down into two pyruvate molecules.b. a glucose molecule is formed from carbon dioxide that is fixed by Rubisco.c. the energy from electrons forms a proton gradient that is used to synthesize ATP.d. the electrons in acetyl-CoA are transferred to electron carriers.
Monosaccharide glucose is converted into the essential three-carbon molecule pyruvate throughout the glycolytic cycle. Normally, one glucose splits into two pyruvate molecules, which are then utilized in additional steps of cellular respiration.
What method converts glucose into two pyruvate molecules?The process within which sugar is broken down to create pyruvate in a cell's cytoplasm is known as glycolysis. In aerobic environments, enzyme can diffuse through neurons, at which it undergoes cellular citric acid cycle and produces reducing equivalents there in form of NADH and FADH. 2
Does glycolysis result in the breakdown of glucose into two pyruvate molecules?During the ten-step process known as glycolysis, glucose is reduced form two molecules of pyruvate. Pyruvate now penetrates the alveoli where it is oxidized via the tricarboxylic acid cycling to produce carbon dioxide and water. Two phases of glycolysis can be distinguished, both of which take place in the cytosol.
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given left atrial pressure of 2 mmhg and pulmonary trunk pressure of 15mmhg, the driving pressure is
Given left atrial pressure of 2 mmhg and pulmonary trunk pressure of 15mmhg, the driving pressure is 25.
What is atrial pressure ?
It enables medical professionals to assess your blood's circulation and determine if it reaches all of your vital organs.
What is pulmonary trunk pressure ?
Pulmonary blood pressure, as opposed to systemic blood pressure, which indicates the power of your blood flowing through your body's blood vessels, reflects the force your heart uses to pump blood from your heart through the arteries in your lungs.
Therefore, Given left atrial pressure of 2 mmhg and pulmonary trunk pressure of 15mmhg, the driving pressure is 25.
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how is the pressure of the vaporized liquid determined
The mass of the disintegrated fluid is the mass of the fume and the flagon is short of the mass of the carafe.
On the off chance that the substance being referred to is an unpredictable fluid, a typical technique to decide its molar mass is to utilize the best gas regulation, PV = nRT. Since the fluid is unpredictable, it can without much of a stretch be switched over completely to a gas. While the substance is in the gas stage, you can quantify its volume, tension, and temperature.
How is the tension inside the test tube estimated when the fluid arrives at its edge of boiling over? The tension in the test tube is equivalent to the barometric strain in the room.
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Rank the phases of matter from the one with the least kinetic energy to the greatest kinetic energy for the particles in the substance.(1 point)
Responses
Least gas
↓
liquid
Greatest solidLeast gas downarrow liquid Greatest solid ,
Least gas
↓
solid
Greatest liquidLeast gas downarrow solid Greatest liquid ,
Least solid
↓
liquid
Greatest gasLeast solid downarrow liquid Greatest gas ,
Least solid
↓
gas
Greatest liquidLeast solid downarrow gas Greatest liquid ,
Skip to navigation
Answer:
Rank the phases of matter from the one with the least kinetic energy to the greatest kinetic energy for the particles in the substance.
Least kinetic energy: solid
↓
liquid
↓
gas: Greatest kinetic energy
What is a replication fork in DNA?
Within the long helical Helix, a structure known as the replication fork emerges during DNA replication. It is created by helicases, which break the hydrogen bonds holding the two DNA strands together in the DNA helix.
The biological procedure that produces two identical copies of DNA from a single original DNA molecule is known as DNA replication, as employed in molecular biology. DNA replication is the main biological mechanism for inheritance in all living organisms.
This is necessary for cell division during tissue growth and repair, and it also ensures that each new cell gets a copy of the DNA. Since the cell has the special ability to divide, DNA replication is crucial.
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You are dating rocks by their proportions of parent isotope potassium-40 (half-life 1.25 billion years) and daughter isotope argon-40.
Part A: Find the age of a rock that contains equal amounts of potassium-40 and argon-40.
Part B: Find the age for a rock that contains three times as much argon-40 as potassium-40.
t=1.25 billion years in Part A. t=2.50 billion years in Part B. This means that 34 of the initial potassium-40 has already decomposed into argon-40, which indicates the rock was 2.5 billion years old, as shown by the graph and the discussion above.
The half-life of the decomposition of potassium-40 to 40Ar is 1250 My. The gaseous 40Ar will be driven out by extreme heating events like volcanic eruptions, allowing the 40K/40Ar ratio to be used to calculate the amount of time since the heating. A radioactive potassium isotope with a short half of 1 billion years is known as potassium-40 (40K). Approximately 0.012% (120 mg) of a total potassium present in nature is contained in it. Three different radioactive decay processes occur with potassium-40. Potassium-40 (K-40) was lowered by half.
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Which vesicular transport process occurs primarily in some white blood cells and macrophages? A) exocytosis. B) phagocytosis. C) pinocytosis
Phagocytosis occurs primarily in some white blood cells and macrophages.
What do you mean by Phagocytosis?
Phagocytosis is a type of endocytosis in which a cell takes in material by engulfing it with its cell membrane. The material is then brought into the cell and degraded by lysosomal enzymes. This process is used by immune cells such as macrophages, neutrophils, and dendritic cells to engulf and destroy pathogens and cellular debris.
During phagocytosis, white blood cells and macrophages recognize and bind to foreign particles, such as bacteria and other pathogens, and engulf them into their cell membranes. The engulfed particle is then digested by lysosomes within the cell, which help to break down the particle and dispose of it. This process is important for protecting the body from infection and disease.
Hence, option B is correct.
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lipophilic hormones are transported in blood ________ and bind to receptors located ________.
Lipophilic hormones are carried by carrier proteins through the bloodstream where they attach to receptors in the target cell.
What do hormones do to humans?Hormones have effects on blood sugar, blood volume, growth and fertility, sexual desire, metabolism, and maybe even sleep. They greatly affect our daily thoughts and actions. Without either a doubt, hormones are powerful.
What happens when your hormones are out of balance?It is true that hormonal abnormalities can contribute to a wide range of issues, including irregular periods, errant hair growth, difficulty getting pregnant, weight gain, or even trouble sleeping. Your doctor is the best person to discuss these issues with.
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What happens if you have PID for a long time?
PID, if left untreated, can lead to serious complications, especially if it lasts for a long time.
PID, or pelvic inflammatory disease, is a condition that occurs when bacteria enters the uterus, fallopian tubes, or ovaries from the vagina or cervix, causing inflammation and potential damage to these reproductive organs.
The following are some of the potential consequences of untreated or prolonged PID
Infertility: PID can cause scarring and blockages in the fallopian tubes, making egg transport from the ovary to the uterus difficult or impossible. Infertility or ectopic pregnancy can result from this.
Chronic pelvic pain: A common complication of PID is chronic pelvic pain. The condition's inflammation and scarring can cause ongoing discomfort and pain.
Abscesses: In some cases, PID can cause abscesses (pus collections) in the reproductive organs or surrounding tissues.
Peritonitis: When an abscess ruptures, the infection can spread to the lining of the abdomen (peritoneum), causing peritonitis, which can be fatal.
Scarring and blockages caused by PID, as previously mentioned, can increase the risk of ectopic pregnancy, a serious condition in which a fertilised egg implants outside the uterus.
If you suspect you have PID, you should seek medical attention right away. Most people with the condition can recover completely with the right treatment and without any long-term complications.
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Why is the unknown in this example not Pseudomonas?
A. It can tolerate oxygen.
B. It ferments lactose.
C. It is a Gram-negative cell.
D. It is a rod-shaped cell.
Based on the given information, the unknown microorganism cannot be identified as Pseudomonas. Here option E is the correct answer.
It can tolerate oxygen: This characteristic is not specific to Pseudomonas, as many other bacteria are also capable of tolerating oxygen. It ferments lactose: This characteristic is not consistent with Pseudomonas, as Pseudomonas is not known to ferment lactose. Instead, Pseudomonas is a non-fermentative bacterium.
It is a Gram-negative cell: This characteristic is shared by Pseudomonas, as it is a Gram-negative bacterium. However, other bacterial genera are also Gram-negative. It is a rod-shaped cell: This characteristic is also not specific to Pseudomonas, as many other bacteria are also rod-shaped.
Overall, the given characteristics are not enough to identify the unknown microorganism as Pseudomonas. Additional tests, such as biochemical or molecular tests, would be needed to accurately identify the microorganism.
Complete question:
Why is the unknown in this example not Pseudomonas?
A. It can tolerate oxygen.
B. It ferments lactose.
C. It is a Gram-negative cell.
D. It is a rod-shaped cell.
E. None of these
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which phylum harbors the most functional diversity observed and also has the most cultured representatives?
a. Actinobacteria
b. Bacteroidetes
c. Firmicutes
d. proteobacteria
The phylum Proteobacteria now represents the largest and most phenotypically diversified evolutionary branch within the domain Bacteria.
The correct statement is D.
What function does a protobacterium serve?By consuming oxygen and reducing the electrocatalytic activity in the gut environment, the proteobacteria are believed to play a significant role in preparing the intestine towards colonization by the stringent anaerobes necessary for optimal gut function.
What makes proteobacteria unique?The phylum (Proteobacteria) of bacteria, which is made up primarily of staphylococci bacteria with only an outer membrane largely made of lipopolysaccharides, is known as the Bacteria. They all have flagella that are used for propulsion. Some of them are non-motile, whereas others move through bacterial gliding. This phylum includes anaerobic organisms.
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What determines which cells act as targets for endocrine signals?
a.Those cells that are derived from the same embryonic tissue as the endocrine organ.
b.Those in the same area as the cells that release the hormone.
c.Those with receptors specific for the signaling molecule.
d.Those with a high density of CAMs.
Cells that originated from the exact similar embryonic tissue that comprises the endocrine organ are targeted by endocrine signals.
What is the term endocrine?A type of tissue known as the endocrin is responsible for producing and releasing hormones into the bloodstream, wherein they control the actions of many cells and organs. Endocrine tissues include, among others, the pituitary, thyroid, and adrenal glands.
How does the endocrine function in our body?The management of adult body functions, the act of reproduction, and childhood growth and development are all handled by the endocrine system. The endocrine system, which controls and regulates all of the body's essential functions and processes, is responsible for energy management and reproduction.
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the continual life cycle of keratinocytes being sloughed and replaced by cells undergoing mitosis takes about _________.
A cell that starts out in the basal lamina or stratum will eventually move through all of the epidermis strata in this fashion.
Describe a strata?A subset of the population's whole collection of things being sampled is referred to in statistics as a stratum, plural strata. Thus, stratification is the practice of separating the population into groups within which a random sample of individuals can be selected.
An epidermis is what?In botany, the epidermis is the outermost layer of cells generated from the protoderm that covers the stalk, root, leaves, blossom, fruit, and seed sections of a plan.
In botany, the epidermis is the outermost layer of cells generated from the protoderm that covers the stalk, root, leaves, blossom, fruit, and seed sections of a plant. The waxy cuticle of the epidermis acts as a barrier against infection, water loss, and mechanical harm.
A tissue that serves as protection for the entire plant is called the epidermis.A cell that starts out in the basal lamina or stratum will eventually move through all of the epidermis strata in this fashion.
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End-diastolic volume is decreased during exercise because of the increased heart rate. True or false ?
True , End-diastolic volume declined more faster following blood volume growth than before, explaining the higher slope of the SV/HR relationship. Changes in inotropy had no effect on end-diastolic volume or the SV/HR relationship.
The end-diastolic volume initially reduces because the thicker heart muscle squeezes more tightly. End-diastolic volume increased by 18% (P 0.001) and end-systolic volume dropped by 21% (P = 0.002) from rest to activity at a heart rate of 160 beats min(-1). During exercise, stroke volume increased almost linearly (45% increase, P 0.001).
An increase in heart rate caused by right atrial pacing resulted in a decrease in end-diastolic volume, stroke volume, stroke work, and end-diastolic pressure in 12 conscious dogs.
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what does the term 2pq represent in the hardy-weinberg equation?
The homozygous genotype AA frequency is represented by p2, the homozygous genotype AA frequency by q2, and the heterozygous genotype Aa frequency by 2pq in the equation.
What does the 2 in 2pq stand for?The formula p2 + q2 + 2pq = 1 can be used to determine the frequency of genotypes in a population, where p2 denotes the frequency of homozygous dominant genotypes, q2 denotes the frequency of recessive genotypes, and 2pq is the frequency of heterozygous genotypes.
What does the symbol P 2 2pq q2 mean?In addition to representing the binomial expansion of (p + q)2, the Hardy-Weinberg genotype frequencies, p2 + 2pq + q2, also sum to one (as must the frequencies of regardless of whether a population is in Hardy-Weinberg equilibrium, all genotypes within it).
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Which of the following describes the industrialized system of breeding, raising and
harvesting animals to be used for human consumption and other animal products?
A. Livestock systems
B. Production techniques
C. Animal agriculture
D. Animal welfare
Animal Agriculture describes the industrialized system of breeding, raising, and harvesting animals to be used for consumption. Option C is correct
Animal Agriculture is basically a term where a person raises the animals, takes care of the animals and the animals are controlled by their owners when the animal reaches a certain age or grows up, then that animal is used for human consumption or other products that we can secrete from that animal
Sometimes these animals are forced to extreme measures to give a good amount of food for consumption by humans, which is not a good thing
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A good scientific experiment is reproducible. What does this mean?A. Scientific results have undergone systematic and critical testing.
B. Experiment, hypothesis.
C. It must be open to revision in the light of new data.
D. Anyone can conduct the same experiment in another lab and expect the same results.
Anyone can conduct the same experiment in another lab and expect the same results.
What is reproducible ?When a researcher collects new data to reach the same scientific conclusions as a prior study, this is referred to as "replicability." In contrast, "reproducibility" refers to situations in which the original researcher's data and computer programmes are utilised to regenerate the results.
A process called an experiment is used to ascertain whether real-world observations support or contradict the hypothesis' derived predictions. A hypothesis gains more credibility if evidence from an experiment supports it.
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what is glucose 6 phosphate?
G6P (glucose 6-phosphate, also known as the Robison ester) is a glucose molecule that has been phosphorylated at the hydroxy group on carbon 6. This dianion is particularly abundant in cells because the vast majority of glucose entering a cell gets phosphorylated in this manner.
What role does glucose 6-phosphate play?Glucose-6 phosphate is the initial intermediate of glucose metabolism and is essential for the liver's energy metabolism. It serves as a metabolic connector for glycolysis, the pentose phosphate route, glycogen synthesis, de novo lipogenesis, and the hexosamine pathway.
This enzyme aids in the protection of red blood cells from injury and premature destruction. The first step in the pentose phosphate pathway is glucose-6-phosphate dehydrogenase, which is responsible for a sequence of chemical events that convert glucose (a type of sugar found in most carbohydrates) to another sugar, ribose-5-phosphate.
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What direction does the shoulder most commonly dislocate?(a) Anteriorly(b) Inferiorly(c) Medially(d) Posteriorly
The anterior direction is the most common location in which the shoulder commonly dislocates, which means option A is the right answer.
Anterior dislocation is the most common shoulder dislocation which is caused due to the arm being positioned in an excessive amount of abduction and external rotation. Shoulder dislocation refers to the injury in the shoulder which is caused due to the displacement of the arm bone out of the ball and socket joint. It can cause high swelling and pain in the region. The displacement of bone can be fixed through some physical treatments such as splinting, and surgery, along with medications which is used to provide relief from the pain. Anterior shoulder dislocation can cause direct trauma/ compression to the axillary nerve.
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which of these is an example for how the same genotype can give rise to different phenotypes in population?
The correct answer to this question is E, penetrance and expressivity, they explain the phenomenon where the same genotype might give rise to different phenotypes.
The proportion of animals having a certain genotype that exhibit the phenotype linked to that genotype is known as the penetration rate. Measuring penetrance requires large population studies, and penetrance research aids in estimating the likelihood that an attribute would manifest in individuals who possess the underlying allele.
The same genotype might result in varying degrees of the same phenotype in different individuals. Expression variability among people is measured by expressivity. Expressivity, in contrast to penetrance, represents individual variability rather than statistical variability within a population of genotypes.
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Correct question is
What can explain the phenomenon where the same genotype might give rise to different phenotypes?
A) pleiotropy
B) codominance
C) incomplete dominance
D) complete dominance
E) penetrance and expressivity
what did went’s experiments with the gelatin block demonstrate?A. Plants cannot be induced to bend during growth unless they are exposed to an indirect source of light.
B. Light induces the coleoptile to produce a diffusible substance that moves to the growing region of a plant where it stimulates cells to elongate.
C. Gelatin can enhance the movement of a soluble factor from the growing region of a plant to the coleoptile where it accelerates growth.
D. When a plant tip is removed from a growing plant, the plant acquires the ability to bend toward the light.
Went’s experiments with the gelatin block demonstrate (B) Light induces the coleoptile to produce a diffusible substance that moves to the growing region of a plant where it stimulates cells to elongate.
In his studies using the gelatin block, Went showed how light encourages the coleoptile to create a diffusible material that travels to the plant's growth area and prompts cells to elongate. The growth and bending of plant parts towards a light source are known as the phototropic response of plants, which is caused by this chemical, which was later named auxin.
In the experiment, Went used a gelatin block to impede the transport of auxin in the coleoptile, preventing the substance from traveling toward the plant's growth area. This illustrated the significance of auxin in phototropism by causing the coleoptile to bend away from the light source.
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As the malaria death rate increases, what would you expect to happen to the number of sickle-cell/ deaths? Explain your answer in terms of natural selection and the "heterozygote advantage."
The situation during which the hybrid genetics really does have a greater health when compared to the homozygous dominant of homozygous recessive genotype is known as a heterozygote advantage. The percentage of loci that show heterozygote advantage is extremely low.
What are some instances of the advantages of heterozygosity?The case of sickle cell anemia is a well-known illustration of genotypic advantage in humans. The first inherited condition to be connected to a particular genetic mutation was sickle cell anemia, which was caused by an unique letter (base) change mostly in DNA of a gene that makes a component of hemoglobin.
Heterozygote advantage is what kind of selection?An entity who is heterozygous at a specific gene locus has a higher fitness than an individual who is homozygous in heterozygote advantage, also known as heterotic balancing selection. These balanced polymorphisms are preserved by this process.
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What would happen if the sister chromatids did not split equally during anaphase of mitosis?A. One daughter cell would have more chromosomes than normal.B. One daughter cell would have fewer chromosomes than normal.C. Each daughter cell would have the same number of chromosomes as the mother cell.D. A and B are correct
If sister chromatids do not divide evenly during anaphase of mitosis, one daughter cell will have more chromosomes than usual, while the other will have less chromosomes than normal (d is correct).
Sister chromatids do not separate due to unequal splitting, resulting in both sister chromatids being pushed into the same daughter cell, leaving the other daughter cell missing that chromosome entirely.
Nondisjunction occurs when sister chromatids fail to divide correctly during cell division. This process also occurs in meiosis, resulting in an aneuploid person if the gamete participates in reproduction.
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the ____ is a fibrous connective tissue membrane that covers the external surface of cartilage providing oxygen and nutrients to the chondrocytes.
The majority of the body's cartilage is covered by the dense layer of fibrous connective tissue known as the perichondrium.
Where exactly is the perichondrium and what does it do?
In various body regions, the perichondrium is a dense layer of fibrous connective tissue that Covers cartilage. These are typically covered by perichondrium tissue: elastic in particular ear regions.
Periosteum is what kind of tissue is it?connective tissue The periosteum is a thin layer of connective tissue that covers the bone's outer surface everywhere except at joints (where articular cartilage provides protection). It is very sensitive to manipulation because it has nociceptive nerve endings, unlike bone.
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Using a microscope, you observe an amoeba moving toward a food source. This is an example of. A) reproduction. B) cellular structure. C) metabolism.
You see an amoeba migrating toward a source of food under a microscope. This demonstrates responsiveness.
Describe Amoeba.Single - celled organisms with the ability to change their shape include amoebas. Ponds, lakes, and rivers with slow moving freshwater are common places where they can be found. Periodically, these human organisms might invade the human body and spread a variety of ailments.
Can amoebas harm you?It is often described to simply as the "brain-eating ameba" although it can infect this very same brain whenever water carrying ameba flows up the nose. Only three Americans contract a fatal sickness from themselves each year, despite this. Some of the early symptoms include headaches, fever, nauseousness, and vomiting.
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The biological species concept relies on a disruption of which aspect of population genetics?
a. mutation
b. selection
c. gene flow
d. genetic drift
e. all of the above
The biological species concept relies on a disruption of which aspect of population genetics is c. gene flow.
The biological species idea is based on behavioral statistics and emphasizes reproductive isolation among organizations. The lineage species idea is based on genetic statistics and emphasizes awesome evolutionary trajectories among organizations, which bring about awesome lineages (branches on a phylogenetic tree). Biological species idea. In nineteen century the primary who produced the maximum quoted definition of what he called “biological species” changed into the zoologist Mayr (1942) who described species as: “organizations of truly or doubtlessly interbreeding herbal populations which can be reproductively remoted from different such organizations”.
Thus, option c is the correct choice.
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