Answers
Answer:
deletion
Explanation:
Related Questions
In fruit flies, the recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). The double mutant pr-cn combination has orange eyes. An F1 female who is wild-type is crossed to an orange-eyed male. Their F2 progeny have the following distributions:
Answers
| Wild Type | 8 |
| Brown | 241 |
| Bright-Red | 239 |
| Orange | 12 |
which of the following is a possible consequence of disabling the g2 checkpoint in the cell cycle?
Answers
the following is a possible consequence of disabling the g2 checkpoint in the cell cycle : incompletely replicated DNA may be passed to the two daughter cells; these cells could be lacking in specific genes or chromosomes and would likely not survive.
If DNA replication did not occur completely, the offspring cells would lack some or all of the genome. This could be disastrous if a cell lacked the genes required for proper function and health. The cell cycle will not progress to the next stage if the DNA is not replicated the DNA is not replicated, the cell cycle will not progress to the next stage. As a result, the subsequent division would not take place. This will result in cell death.
If the cell did not duplicate its DNA (as occurs during meiosis to produce gametes), each daughter cell would receive only one copy of each chromosome. Instead of 23 pairs, each cell would have 23 chromosomes (in other words, each cell would be haploid).
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Which of the following statements about sister chromatids is TRUE?
1. Sister chromatids are produced during mitosis.
2. Sister chromatids are held together by complementary base pairing of DNA at the centromere.
3. Sister chromatids are exact copies of each other and are formed just prior to cell division.
4. After mitosis, sister chromatids contain the same genes, but they may have different alleles.
5. All of these statements about sister chromatids are TRUE.
Answers
Answer: Sister chromatids are exact copies of each other and are formed just prior to cell division
Explanation:
I took the quiz, I hope this helped!
The true statement about sister chromatids is: "Sister chromatids are exact copies of each other and are formed just prior to cell division". The correct option is 3.
What is the correct statement for sister chromatids?During the S phase of the cell cycle, the DNA within a cell is replicated, creating identical copies of each chromosome called sister chromatids.
These chromatids are held together at the centromere and are separated during cell division (mitosis or meiosis) to ensure that each daughter cell receives an equal amount of genetic material.
The correct statement about sister chromatids is: Sister chromatids are exact copies of each other and are formed just prior to cell division.
Therefore, the correct option is 3.
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What is the bushy head of a tree called
Answers
Answer:
Tree Crown
Explanation:
The tree's Crown is the upper part of the tree that contains the lateral branches above the tree trunk.
which of the following is the first step perfomed after the blood colection bag is filled during a plasma collection?
Answers
Asking the patient to speak and spell his or her name and providing you with his or her birth date is the first step in collecting data from the patient.
Which blood sample should be drawn first in the order of blood collection?According to CLSI Procedures & Devices for such Collection for Capillary Blood Specimens; Certified Standard - Sixth Version, September 2008, the order for draw is based on that document.To produce a high-quality specimen, this standard suggests drawing EDTA tubes first, then other additive tubes, and finally serum specimen tubes.
What is the proper sequence for collecting blood tubes?The following is the proper draw order: a container or tube for blood cultures. Tube for sodium citrate (eg, blue closure) serum tubes, including ones that contain gels and clot activators
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A break in a blood vessel occurs and damaged cells release chemicals to begin the process of blood clotting. As clotting gets under way, signals are sent by cells for each step to release more chemicals that accelerate the process. Eventually the wall is patched and bleeding is stopped. While the cells are signalling, what type of feedback is occuring?
a.This process is not controlled through feedback.
b.Positive and negative feedback are occuring together.
c.Positive
d.Negative
Answers
Consequently, the right answer is (c) - Positive feedback
Damaged cells produce chemicals when blood vessels rupture, which starts the blood clotting process. Platelets then arrive at the wound site and begin to release chemicals that draw other platelets to the damaged area. This kind of binding is cooperative, thus one molecule indicates the release of another molecule. Clot formation is the end consequence, and as a result, bleeding is stopped. The cooperative binding is a form of positive feedback because each person contributes more.
Regarding the bad choices
a. Blood clotting involves positive reinforcement.
b. The only positive feedback loop that causes blood coagulation.
d. Blood clotting is not a function of it.
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Which of the following activities would be associated with the parasympathetic division of the autonomic nervous system? a. resting and digesting b. release of both acetylcholine and epinephrine c. increased heart rate d. "fight-or-flight" response e. release of epinephrine only
Answers
The activation of the parasympathetic branch of the autonomic nervous system is associated with resting and digesting.
What is the parasympathetic nervous system ?One of the two functionally separate and perpetually active divisions of the autonomic nervous system is the parasympathetic nervous system (PNS). It opposes the sympathetic nervous system, which is the other (SNS).
In calm "rest and digest" situations, the parasympathetic nervous system predominates, whereas the sympathetic nervous system activates the "fight or flight" response in stressful circumstances.
Therefore, The activation of the parasympathetic branch of the autonomic nervous system is associated with resting and digesting.
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Part B - Relationship between population size and growth rate
A population of animals in a specific environment with a K of 2500 has rmax of 1.0 per individual per year and exhibits logistic growth as follows:
dN/dt}=rmax.N.(K-N)/K
Arrange the following population sizes in order of decreasing growth rate.
Rank the population sizes(N)from fastest to slowest growth rate. If two population sizes have the same growth rate, overlap them. (For help calculating growth rate, see Hint 1.)
Answers
Arrangement of the population sizes in the order of decreasing growth rate 1250> 1000 = 1500(same growth rate) > 750> 500> 250.
More and more of the offspring will survive if the rate of growth increases. As a result, there is a cumulative effect in which the slope gets steeper as the growth rate increases.
growth rate is given by as dN/dt=rmax.N.(K-N)/K
where r = 1.0 and K = 2500 are constant
at N = 750
dN/dt = 0.1 × 750 × (2500-750)/2500
= 52.5
at N = 500
dN/dt = 0.1 × 500 × (2500-500)/2500
= 40
at N = 1000
dN/dt = 0.1 × 1000 × (2500-1000)/2500
= 60.0
at N = 1250
dN/dt = 0.1 × 1250 × (2500-1250)/2500
= 62.5
at N = 250
dN/dt = 0.1 × 250 × (2500-250)/2500
= 22.5
at N = 1500
dN/dt = 0.1 × 1500 × (2500-1500)/2500
= 60
the more value of dN/dt, the more will be the growth rate.
hence, 1250> 1000 = 1500(same growth rate) > 750> 500> 250.
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in the cochlea, specialized cells called hair cells convert the vibrations into electrical signals. these signals are then sent through the auditory nerve to the brainstem, where they are further processed and sent to the auditory cortex in the brain. in the auditory cortex, the signals are interpreted as sound. the brain can identify the pitch, volume, and timbre of the sound, as well as locate the source of the sound and identify specific sounds within a mixture of sounds (such as a person speaking in a noisy room).
Answers
The fluid in the cochlea moves in response to vibrations from the oval window. 25,000 nerve endings are set in action when the fluid travels.
These nerve terminals convert vibrations into electrical impulses, which travel to the brain via the eighth cranial nerve (auditory nerve). It is made up of little hair cells that border the cochlea. These cells convert vibrations into electrical impulses, which sensory nerves carry to the brain.
Mechanical vibrations are transmitted. Hair cells of the Corti organ convert mechanical sound waves into nerve signals. When the basilar membrane, on which the organ of Corti lies, vibrates, they are activated.
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Which of the following represents an example of habitat suitability as an explanation of species abundance and distribution?
Group of answer choices (select all that apply)
Two closely related species of frogs have overlapping ranges and isolated on a single mountain.
As temperatures increase, tropical species are expanding their geographical range as more regions have preferred temperatures.
Darwin's finches are only found on the Galapagos islands because of dispersal limitations.
Answers
The following represents an example of habitat suitability as an explanation of species abundance and distribution : As temperature increase, tropical species are expanding their geographical range as more regions have preferred temperatures.
Tropical species are those that are indigenous to the tropics. Tropic rainforests, monsoonal tropical forests, dry (frequently deciduous) forests, spiny forests, deserts, savannahs, grasslands, and other habitat types can all be found in tropical ecosystems.
Because tropical rainforests receive constant warmth and rain, they are home to a diverse range of plants and animals. Monkeys, apes, gorillas, tigers, elephants, leopards, lizards, snakes, birds, and insects are among the most common animals found in rainforests.
Tropical climates are hot, humid, and rainy environments found primarily between the Tropics of Cancer and Capricorn. Tropical climates are classified into four types, according to Köppen: tropical rainforest, tropical monsoon climate, tropical savanna (dry winter), and tropical savanna (dry summer).
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How would the life cycle of an animal RNA virus be affected if its Viral RNA polymerase enzymes were completely destroyed in the host cell's cytoplasm ?
Answers
Answer:
If the viral RNA polymerase enzymes were completely destroyed in the host cell's cytoplasm, it would severely affect the life cycle of an animal RNA virus. The viral RNA polymerase is an essential enzyme that is responsible for synthesizing viral RNA from a viral DNA template. Without this enzyme, the virus would be unable to replicate and produce new viral particles. This would ultimately halt the virus's life cycle and prevent it from spreading to other host cells.
A crucial enzyme that produces viral RNA from a viral DNA template is called viral RNA polymerase. The virus wouldn't be able to reproduce and create new viral particles without this enzyme.
What is RNA virus?An animal RNA virus's ability to replicate itself would be greatly hampered if the viral RNA polymerase enzymes were fully eliminated from the cytoplasm of the host cell.
To maintain their survival, RNA viruses take use of every known mechanism of genetic diversity.
High mutation rates, high yields, and quick replication timeframes are distinguishing characteristics of RNA virus replication. Because of this, RNA viruses reproduce as intricate and dynamic mutant swarms known as viral quasispecies.
Therefore, in the end, this would stop the virus's cycle and stop it from spreading to further host cells.
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Visit the link below and use the information to
answer the following question.
Why Is Biodiversity Important? Who Cares?
Name three ecosystem services provided by
biodiversity.
Answers
Biodiversity provides ecosystem services such as regulation of ecosystem processes, provision of resources, and cultural and aesthetic value.
What is biodiversity?
Biodiversity, or the variety of species and ecosystems present in an area, is important for a number of reasons. Here are three ecosystem services provided by biodiversity:
Regulation of ecosystem processes: Biodiversity helps to regulate the processes that sustain life, such as the water cycle, nutrient cycling, and pest control. For example, a diverse array of predators helps to keep prey populations in check, while a variety of plants and microbes help to recycle nutrients and maintain soil health.
Provision of resources: Biodiversity provides us with a wide range of resources, including food, medicine, timber, and fuel. Many of the crops that we rely on for food, such as rice, wheat, and corn, are pollinated by bees and other insects, which are essential components of biodiversity.
Cultural and aesthetic value: Biodiversity is also important for cultural and aesthetic reasons. Many people derive enjoyment and inspiration from observing and interacting with the natural world, and the loss of biodiversity can diminish these experiences.
Given the numerous benefits that biodiversity provides, it is important to protect and conserve it. Biodiversity is vital for maintaining the health and functioning of ecosystems, which in turn supports the well-being of humans and other species.
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acute labyrinthitis is sudden onset of inflammation of the structures that form the membranous labyrinth. which of the following structures would not be inflamed with this condition? a) Semicircular canals
b) Malleus
c) Utricle
d) Cochlea
Answers
Malleus would not be inflamed with acute labyrinthitis because The malleus is an ossicle it is not part of the inner ear.
The condition known as labyrinthitis, which affects balance, can be brought on by an infection or inflammation of the inner ear. When you have an upper respiratory infection, such as the flu, you may occasionally contract it.
Viruses frequently induce labyrinthitis-causing inner ear infections. At times, bacteria may also be the culprit. Doctors must distinguish between viral and bacterial diseases since their symptoms can sometimes be so similar.
The malleus, or hammer, is a hammer-shaped small bone or ossicle of the middle ear. It connects with the incus, and is attached to the inner surface of the eardrum. The word is Latin for 'hammer' or 'mallet'. It transmits the sound vibrations from the eardrum to the incus (anvil).
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How is energy causing motion or creating a change in water
Answers
Answer:
basically work requires energy so we can say energy is directly proportional to work SO FORMULA OF WORK IS = Force × distance so energy = work
Explanation:
sorry if that doesnt make sense
What is the power house of cell?
Answers
Answer:
mitochondria
Explanation:
The power house of a cell is the mitochondria. The mitochondria are organelles found within the cytoplasm of eukaryotic cells that are responsible for generating the majority of the cell's energy in the form of ATP (adenosine triphosphate). ATP is the primary energy currency of cells, and it is used to power a wide variety of cellular processes, including the synthesis of proteins, the transport of molecules across cell membranes, and the contraction of muscles.
Which of the following is not a characteristic of a technically adequate PA chest radiograph?
O thoracic spine disc spaces should be barely visible through the heart. O the osseous detail of the thoracic spine is always clearly visualized. O the clavicular heads should be equal distance from the spinous process of the thoracic vertebral bodies.
O bronchovascular structures can usually be seen through the heart.
Answers
Option B is the correct. The osseous detail of the thoracic spine is always clearly visualized is not a characteristic of a technically adequate PA chest radiograph.
A good chest radiograph should be rotation-free. The medial borders of the clavicle should be equally spaced apart from the spinous processes of the vertebral bodies to confirm this. It's crucial to confirm that the patient has made a strong effort to inhale. It has a good inspiratory action and has 10 to 11 ribs. exposure: Films with good exposure show the shape of the spinal column and good lung detail. Rotation: Look for indwelling lines or objects; the distance between the medial clavicle and the edge of the next vertebrae should be about equal.
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Which enzyme synthesizes tRNA?
Reverse transcriptase
RNA polymerase
Aminoacyl-tRNA synthetase
Ribosomal RNA
DNA polymerase
Answers
RNA polymerase enzyme synthesizes tRNA in the cytoplasm of the cell.
A type of RNA molecule known as transfer ribonucleic acid (tRNA) aids in the translation of a messenger RNA (mRNA) sequence into a protein. During translation, the process of making a protein from an mRNA molecule, tRNAs act at specific locations in the ribosome.
An enzyme known as RNA polymerase is responsible for making mRNA, tRNA, and rRNA.
The genes for tRNAs and the smallest species of ribosomal RNA, 5S rRNA, are transcribed by RNA polymerase III. RNA polymerase III also transcribes some of the small RNAs (snRNAs and scRNAs) involved in splicing and protein transport, while others are polymerase II transcripts.
The mature tRNA in eukaryotes is made in the nucleus and sent to the cytoplasm for charging.
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identify three ways that sexual reproduction increases genetic variability. for each, explain how it increases genetic diversity among the offspring
Answers
Answer:
1.by pouring more water
2. by taking more heat which enough than uselabel the trna and mrna with the appropriate terms. also, determine the correct sequence of bases for trna and the correct amino acid for the trna (refer to the genetic code to determine the amino acid that is coded). there are six targets total. you will not use all of the terms
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Labeling trna and mrna with appropriate terms is important for understanding how genetic information is encoded and translated. The correct sequence of bases for trna and the correct amino acid for trna must be determined in order to accurately carry out the translation process.
Trna is a type of RNA (ribonucleic acid) molecule that is responsible for transferring amino acids to the ribosome during translation. It has a specific sequence of three bases, known as the anticodon, that pairs with the corresponding codon on the mrna. The trna also carries an amino acid that is specific to the codon on the mrna.
Mrna is another type of RNA molecule that carries genetic information in the form of codons. Each codon is a sequence of three bases that codes for a specific amino acid. When the trna carrying the corresponding anticodon pairs with the codon on the mrna, the trna is able to bring the amino acid and pair it with the codon on the mrna.
To determine the correct sequence of bases for trna and the correct amino acid for the trna, the genetic code must be consulted. For example, if the codon on the mrna is AUG, the corresponding trna sequence would be UAC and the corresponding amino acid would be methionine.
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Determine which energy use evaluation technique is being described and drag the explanation label to its appropriate classification category. You are placed in a small room and the amount of body heat you release raises the temperature of a layer of water that surrounds the room by measuring the water temperature, scientists can determine how much energy is expended Your height weight, age, gender, and physical activity estimate are used to estimate energy needs. You are hooked up to a cart that measures the amount of oxygen you consume; Instruments on the cart convert oxygen use to energy use, determining estimated caloric use. Direct calorimetry Indirect calorimetry Estimated energy requirement calculation < Prev 69 of 120 !!! Next → G S 9W MacBook Pro 90 FU F4 F5 590 A $ 4 % 5 00 * Il + 3 6 7 9 0 E R T Y o P
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Calorimetry is the practice of tracking changes in a body's state variables in order to predict, within certain limits, the heat transfer resulting from those changes, such as those brought on by chemical reactions, physical alterations, or phase transitions. Calorimetry is done with a calorimeter. Joseph Black, a Scottish physician and scientist who was the first to distinguish between heat and temperature, is credited with developing the science of calorimetry.
A reference material for calorimetry must have specified thermal constitutive properties that are known and measured. The temperature and volume of a calorimetric substance are the only variables that may completely and quickly identify the pressure it creates, according to the traditional rule, which Clausius and Kelvin acknowledged. The melting of ice is an example of a transition that does not involve a phase change that is covered by this rule. This standard is deviated from by many materials, and the current classical calorimetry formula is insufficient to account for these variations. It is anticipated that the normal rule will be followed by the calorimetric material in this instance.
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Rabbits _______, whereas Pacific salmon _______.
O have embryonic diapause; do not
O are iteroparous; are semelparous
O have seasonal reproductive seasons; do not
O have internal fertilization; fertilize eggs with spermatophores
O are semelparous; reproduce only once
Answers
While Pacific salmon were semelparous, rabbits become iteroparous. used to characterize organisms with several generations of reproduction.
What kind of organisms are iteroparous?An organism that has many reproductive processes during its lifespan is said to be iteroparous. An illustration of an iteroparous organism is the pig. We come to the conclusion that the majority of insects might be called iteroparous rather than semelparous, meaning that many insects have various reproductive efforts during their adult lives.
Plants are they iteroparous?Whereas all angiosperms are semelparous, not everyone perennial flora are. This distinction is significant. Numerous species of animals and plants have long lifespans before experiencing a single, enormous, lethal reproductive episode.
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1. Cellular respiration is a series of chemical reactions that convert the energy in food molecules into energy stored in the molecule _________. Aerobic respiration requires the presence of Oxygen___________ and releases water and _________________ as waste products.
Answers
Answer:
1. H2O
2. H
3. 2 molecules of oxygen.
Which of the following describes a critical role of cAMP during the transduction stage of a G protein signal transduction pathway?
Answers
cAMP results in the activation of an enzyme that amplifies the signal by acting on many substrate molecules.
Which uses of soil are discussed in the video? Check all that apply.
O as a habitat for Smokey (the) bear
a O as a way to clean and store air
a O as a place for plants and crops to grow
O as a material to clean and smooth skin
O as a building material for homes and buildings
O as a way to prohibit public access to forests
Answers
Answer:
Explanation: 1. ahumic soil
2. clay -rich soils
3. loamy soil
4. multani soil
5. loam soil
6. mountain soil
If the researchers monitored the cortical activity of the baboons as they viewed the color patches, they would most likely find increased activity in the:
A.occipital cortex.
B.temporal cortex.
C.somatosensory cortex.
D.motor cortex.
Answers
If the researchers monitored the cortical activity of the baboons as they viewed the color patches, they would most likely find increased activity in the Occipital lobe, where vision information is done.
The occipital lobe is the brain's visual processing area. It is linked to visuospatial processing, perception of distance and depth, color determination, object and face recognition, and memory formation.
The occipital lobes are situated at the back of the head and are in charge of visual perception, which includes color, form, and motion. Difficulty locating objects in the environment can be caused by occipital lobe damage. Difficulty recognizing colors (Color Agnosia)
Injury to the occipital lobes can cause vision problems such as blindness or blind spots, as well as visual distortions and inattention. The occipital lobes are also linked to a variety of behaviors and functions, such as visual recognition, visual attention, and spatial analysis.
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an ordered sequence of events (including interphase and the mitotic phase) that extends from the time a eukaryotic cell is first formed from a dividing parent cell until its own division into two cells.
Answers
Cell cycle is an ordered sequence of events (including interphase and the mitotic phase) that extends from the time a eukaryotic cell is first formed from a dividing parent cell until its own division into two cells.
A cell cycle is the sequence of events that occur in a cell as it develops and divides. A cell spends the majority of its time in what is known as interphase, where it expands, reproduces its chromosomes, and arranges for cell division. The cell then exits interphase, goes through mitosis, and divides completely.
The cell cycle could be considered as a cell's life cycle. In other words, it is the sequence of growth and development steps that a cell goes through between "birth"—formation by the division of a mother cell—and reproduction—division to produce two new daughter cells.
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The judge eyed the lawyer as she argued her case. This judge happened to have a scale on his bench, like the kind that balances. The lawyer closed her case and the judge was silent. His eyes burned into the suspect. He had one hand on his jawline, another on the scales. The court waited for his decision.
What is the symbol?_________.
What does the symbol represent?________________________.
Answers
Is a symbol of Scales of justice and it represent the objective and fair weighing of two sides in a legal dispute.
What does the symbol stand for in courtThe scales of justice stand for the balance between truth and fairness in court system, the scales are held by a lady called the of Lady Justice, or Justitia in Latin that symbolizes the Roman goddess of justice. The symbol stand to remind people that they will get justice and also remind judges, attorneys and juries of their duty to serve justice in dispute and criminal cases . The symbol of justices is also used to present the balance between the support and opposition a case has and is used for weighing the two thereby reaching for fairness and just verdict.
With evidence and argument presented in court, the judge or jury have the duty to determine which side is heavier to pass judgment which the judge is about to do in the above question.
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.
Create a Punnett square showing a cross between the two F1 parent plants. Their offspring are the F2 generation.
Answers
When the two heterozygous parents for tallness are crossed, the F2 generation has three tall and one short plant, with a genotype ratio of 1:2:1 for the TT, Tt, and tt.
What is the Punnett square's significance?The punnett-square significance is that it explains the genotyping of the offspring of the parents, and here there are two parents for the tallness, whereas the tall is dominant over the short, and here there are two types of gametes produced, with three tall and one short, with the punnett-square explained below.
Hence, when the two heterozygous parents for tallness are crossed, the F2 generation has three tall and one short plant, with a genotype ratio of 1:2:1 for the TT, Tt, and tt.
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Which of the following terms best describes groups of organisms that cannot easily be distinguished morphologically but show no gene flow between them, and are evolutionarily independent units? O Peripatric species O Incipient species O Cryptic species O Allopatric species
Answers
The terms that best describe groups of organisms that cannot easily be distinguished morphologically but show no gene flow between them and are evolutionarily independent are cryptic species, which are present in the third option.
What is a cryptic species?A "cryptic species" is a species that is difficult to distinguish from other species because of their similarity, and this can happen for a variety of reasons, such as physical characteristics that overlap with those of other species and are found in different organisms, including plants, animals, etc, an example is the pine marten, which is native to Europe and Asia and there are two distinct species of pine marten, the European pine marten and the Asian pine marten, which are difficult to distinguish from one another due to their physical similarities.
Hence, the terms that best describe groups of organisms that cannot easily be distinguished morphologically but show no gene flow between them and are evolutionarily independent are cryptic species, which are present in the third option.
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Keratins, neurofilaments, and vimentins are all categories of intermediate filaments. Which of the following properties below is not true of these types of intermediate filaments?
(a) They strengthen cells against mechanical stress.
(b) Dimers associate by noncovalent bonding to form a tetramer.
(c) They are found in the cytoplasm.
(d) Phosphorylation causes disassembly during every mitotic cycle.
Answers
Keratins, neurofilaments, and vimentins are cytoplasmic intermediate filaments that are stable once formed. The nuclear intermediate filaments are disassembled and reformed during mitosis; this process is regulated by phosphorylation.
Phosphorylation is the connection of a phosphate group to a molecule or an ion in chemistry. This process, as well as its inverse, dephosphorylation, is common in biology and may be influenced by natural selection. Protein phosphorylation frequently activates a large number of enzymes. The inclusion of a phosphoryl (PO3) group in a chemical compound is known as phosphorylation. This reaction is critical in biological systems for the storage and transport of free energy via energy carrier molecules.
As a result, intermediate filaments can be found in incredibly durable structures such as hair, scales, and fingernails. Intermediate filaments' primary function is to promote cell cohesion and inhibit the acute fracture of epithelial cell sheets under tension.
Intermediate filaments are made up of smaller strands shaped like rods. Eight rods are aligned in a delayed arrangement with another eight rods, and these elements all twist together to form an intermediate filament's rope-like conformation.
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