Certain human cell types, such as skeletal muscle cells, have several nuclei per cell. Based on your understanding of mitosis, how could this happen?A.) The cell undergoes repeated cytokinesis but not mitosis.B.) The cell undergoes repeated mitotic divisions with concomitant cytokinesis.C.) The cell undergoes repeated mitotic divisions but not cytokinesis.D.) The cell undergoes anaphase twice before entering telophase.E.) The cell goes through multiple S phases before entering mitosis.
Answers
Skeletal muscle cells, are unique human cell types that possess several nuclei per cell. This characteristic can be explained with option C: the cell undergoes repeated mitotic divisions but not cytokinesis.
Mitosis is the process by which a cell duplicates its genetic material and divides into two identical daughter cells. It consists of several phases: prophase, metaphase, anaphase, and telophase, followed by cytokinesis, which physically separates the two cells. In the case of skeletal muscle cells, their development involves the fusion of multiple precursor cells called myoblasts.
During muscle development, myoblasts undergo mitotic divisions, which lead to an increase in cell number. However, instead of completing cytokinesis and fully separating, the cells fuse together to form a single, elongated, multinucleated muscle fiber. This fusion process allows for the sharing of cytoplasm and organelles, which contributes to the functional capacity of the muscle cells.
The presence of multiple nuclei in skeletal muscle cells allows for efficient control of gene expression and protein synthesis, enabling the cells to carry out their specialized functions, such as contraction and movement. Therefore, the formation of multinucleated muscle cells through repeated mitotic divisions without cytokinesis plays a crucial role in the development and functionality of skeletal muscles.
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Related Questions
half of the offspring have white flowers, what is the genotype of the plant with purple flowers
Answers
Answer:
Half the offspring have a heterozygous genotype, Ff. Half have a homozygous recessive genotype, ff. Thus, half the offspring have purple flowers, and half have white flowers. The resulting genotypic ratio is 1:1 of heterozygous:homozygous recessive.
Branliest Please! (Crown)
Is sunlight a biotic or abiotic?
Answers
Answer:
abiotic is the answer for this question
If a chord had notes with frequencies of 100, 1,000, and 6,000 hz, what would happen to the basilar membrane?.
Answers
It would vibrate at multiple positions, with peaks at A, B, and C.
What is a basilar membrane?
The basilar membrane is the inner ear's primary mechanical component. Over its length, it has graded mass and stiffness characteristics, and its vibration patterns separate incoming sound into its component frequencies, which trigger various cochlear areas. Sites close to the stapes are vibrated by high frequencies, while the cochlear apex is vibrated by low frequencies. Similar to the notes on a piano, the pattern of frequency in cochlear space is roughly logarithmic. The piston-like, inward-and-outward action of the stapes causes alternating pressure increases and drops in the scala vestibuli and scala media, which in turn create basilar membrane vibrations.
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There would be peaks in the basilar membrane's vibration at places A, B, and C.
What is frequency?
The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency. Hertz (Hz), which equals one (event) per second, is the unit of frequency. The reciprocal of frequency is period, which is defined as the length of time for one cycle of a repeating occurrence. In science and engineering, frequency is a crucial characteristic that is used to describe the temporal rate of change seen in oscillatory and periodic phenomena including mechanical vibrations, audio signals (sound), radio waves, and light.
A basilar membrane is a fibrous membrane that protects and supports the Corti organ inside the cochlea. The basilar membrane vibrates in reaction to sound, stimulating the hair cells, which are the organ of Corti's auditory sensors.
Hence, there would be peaks in the basilar membrane's vibration at places A, B, and C.
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why does the number of yeast cells decrease during fermentation??
Answers
Answer:Dough can still rise in cooler environments, but much more slowly. Amount of yeast; the more yeast the faster the fermentation. Too much can add an undesirable yeasty flavor.
during spermatogenesis, which of the following cells is the first to become haploid? multiple choice spermatid primary spermatocyte sperm cells secondary spermatocyte spermatogonium
Answers
During spermatogenesis, the first cell to become haploid is the secondary spermatocyte.
Here's a step-by-step explanation of spermatogenesis:
1. Spermatogenesis begins with a diploid spermatogonium, which is the stem cell that will divide and differentiate into sperm cells.
2. The spermatogonium undergoes mitosis to produce two diploid primary spermatocytes.
3. Each primary spermatocyte undergoes meiosis I, a type of cell division that reduces the chromosome number by half, to produce two haploid secondary spermatocytes.
4. Each secondary spermatocyte then undergoes meiosis II, another cell division, to produce two haploid spermatids.
5. The spermatids undergo a process called spermiogenesis, where they differentiate into mature sperm cells.
So, in summary, the secondary spermatocyte is the first cell to become haploid during spermatogenesis.
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Which of these animal taxa has the highest population of species threatened with extinction? a) Birds b) Mammals c) Amphibians.
Answers
The animal taxon that has the largest population of species threatened with extinction is amphibians. Correct answer: letter C.
This is because they are especially vulnerable to environmental changes.
What changes are amphibians vulnerable to?They are sensitive to changes in temperature, humidity and other environmental factors, and especially susceptible to the effects of climate change, pollution and habitat destruction.
Destruction of wetlands and other natural habitats, as well as the introduction of invasive species, can also have a devastating effect on amphibian populations. As a result, amphibians are one of the most endangered animal taxa, with nearly one-third of their species threatened with extinction.
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dysregulated crtc1 activity is a novel component of pge2 signaling that contributes to colon cancer growth
Answers
The correct answer is CRTC1 its significance of its dysregulation in colon cancer because of its predominant expression in the brain .
CRTC1 transcriptional activity is mediated by EP1 and EP2 receptor signalling, as well as subsequent calcineurin and protein kinase A activation. In colon cancer cell lines, in vitro CRTC1 loss of function was associated with decreased viability and cell division rate, as well as increased chemotherapy-induced apoptosis in response to PGE2. CRTC1 stable overexpression, on the other hand, significantly increased colonic xenograft tumour growth, demonstrating the role of CRTC1 signalling in colon cancer progression. The discovery of the transcriptional programme activated by increased CRTC1 expression during colonic carcinogenesis revealed several notable pro-tumorigenic CRTC1 target genes, including NR4A2, COX2, amphiregulin (AREG), and IL-6. Finally, we show that CRTC1-induced COX2, AREG, and IL-6 promoter activities are dependent on functional AP1 and CREB transcriptional partners.
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the ligament that provides support to the front of the knee joint is the
Answers
The ligament that provides support to the front of the knee joint is the patellar ligament. The patellar ligament is also called the patellar tendon because it connects the patella to the tibia bone in the front of the leg. It is located below the kneecap and above the shinbone.
The patellar ligament is a strong, fibrous band that supports the knee joint and helps to keep it stable. It is an important part of the extensor mechanism of the knee, which is responsible for straightening the leg. When the quadriceps muscle contracts, it pulls on the patellar ligament, which in turn straightens the leg.
Injuries to the patellar ligament can occur from overuse or trauma. Patellar tendonitis, for example, is a common injury that results from overuse and is characterized by pain and inflammation in the tendon. In severe cases, the patellar ligament can rupture, which can require surgical repair.
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How is the phytoplankton affected by the changes we see in the global carbon cycle, write the claim, evidence, reasoning.
Answers
PLEASEE HELP PLEASEEE
THANK YOU IF YOU DO!
Cones and flowers are the principal reproductive organs in vascular plants. However, successful reproduction is also dependent on roots, stems, and leaves as well. Evaluate each claim. Select ALL the statements that accurately describe the interplay between organ systems.
A) Fruits work with leaves to produce sugars using photosynthesis.
B) Nutrients needed for reproduction are absorbed from the soil from the root system. C) Nutrients absorbed through the roots are transported to the flowers via the xylem. D) Pollen necessary for reproduction is made in the leaves and transported via phloem.
E) Fruits contain large amounts of sugars produced in the leaves through photosynthesis.
Answers
Answer:
B) Nutrients needed for reproduction are absorbed from the soil from the root system.
C) Nutrients absorbed through the roots are transported to the flowers via the xylem.
E) Fruits contain large amounts of sugars produced in the leaves through photosynthesis.
Explanation:
(A) Is wrong the fruit of the plant does not produce Sugars but stores it.
(D) Is wrong because is not made from the leaves but from the Cones of the plant the question tells you this.
Hot water deep within Earth can ____________ minerals and transport them someplace else.( I’ll give brainliast)
Answers
Answer:
Hot-Water Solutions Groundwater works its way down and is heated by magma, and then reacts with minerals to form a hot liquid solution. H. Dissolved metals and other elements crystallize out of the hot fluid to form new minerals, such as gold, copper, sulfur, pyrite, and galena.
Explanation:
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If a corn plant has a genotype Sstt, what are the possible genetic combinations that could be present In a single grain of pollen produced by the plant?
A. Ss, tt, St, st
B. s, tt, st, ST
C. st, st
D. st, sT, st
Answers
Answer:
C
Explanation:
Older systems of classification always placed penguins, chickens, ducks, and pigeons in the bird group and turtles and snakes in the reptile group. Does this diagram support the older system of classification?
Answers
Answer:
Yes
Explanation:
Turtle and Snakes are both reptiles
Which of the following structures are found in typical eukaryotic cells?
1. circular DNA
2. linear DNA (chromosomes)
3. 80S ribosomes
4. 70S ribosomes
A 1 and 3
B 1 and 4
C 2 and 3
D 2 and 4
Answers
How does photosynthesis allow plants to form dna
Answers
Answer:
It allowed because
Explanation:
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compound.
Imagine that you have two identical plants and everything is the same except one plant is growing in wet conditions and the other is growing in dry conditions. Which plant would sustain more ozone injury? Both plants would be equally affected by ozone.
Answers
According to common consensus, plants growing in dry environments may be more vulnerable to ozone damage than plants growing in moist environments.
It is difficult to predict with certainty which plant would sustain more ozone injury, as the extent of ozone damage can depend on various factors such as the species of plant, the concentration and duration of ozone exposure, and the environmental conditions in which the plant is growing.
However, it is generally thought that plants growing in dry conditions may be more susceptible to ozone injury than plants growing in wet conditions. This is because plants that are water-stressed are already under physiological stress, which can make them more vulnerable to damage from ozone exposure. Additionally, dry conditions can cause the stomata (pores on the leaves that regulate gas exchange) to close, which can decrease the plant's ability to dissipate ozone and other harmful gases.
That being said, both plants would still be at risk of ozone injury, as ozone is a highly reactive gas that can damage plant tissues and impair photosynthesis, leading to reduced growth and productivity.
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The purpose of cellular respiration is to convert the energy stored in glucose to ATP.
Answers
Answer:
True
Explanation:
In your body, glucose is the form of energy that is carried in your blood and taken up by each of your trillions of cells. Cells do cellular respiration to extract energy from the bonds of glucose and other food molecules. Cells can store the extracted energy in the form of ATP
dominant and recessive pattern of inheritance. false true
Answers
Answer:
true
Explanation:
because there is existence of fittest
What happens to the pressure of a gas if the volume of gas is
increased at a constant temperature?
Answers
Answer: If the volume of a gas is increased at a constant temperature, the pressure of the gas decreases.
Explanation:
The relation between variation in volume and variation in pressure of a gas at a constant temperature is given by Boyle's Law which states that: The product of pressure and volume of a mass of a contained gas is constant at a constant temperature.
That is,
Pressure (P) x Volume (V) = constant (k)
[when the temperature (T) is constant; k ≠ 0.]
Or, P = \(\frac{k}{V}\)
That is, pressure varies inversely with volume or an increase in volume at a constant temperature causes a decrease in the pressure of the gas.
Detailed answer:
Gas molecules are always in random motion, and the pressure of a gas is defined as the pressure exerted by these moving gas molecules on the walls of the container as they undergo collisions with the walls of the container. The volume of a gas is defined as the three-dimensional space occupied by all the gas molecules in the container at a particular temperature and pressure. Thus, when the volume increases keeping the temperature constant (thus no change in kinetic energy of the molecules occurs due to temperature), the molecules get more space to move around. Thus the pressure exerted by the molecules on the walls of the container decreases.All advertisements contain false information.
Please select the best answer from the choices provided
T
F
Answers
Answer:
false
Explanation:
not all advertisements
Answer:
false
Explanation:
what was the purpose of the field study? keys and kingdoms worksheet
Answers
Answer:
A field study is a general method for collecting data about users, user needs, and product requirements that involves observation and interviewing. Data are collected about task flows, inefficiencies, and the organizational and physical environments of users.
Answer:
is it correct or not?
Explanation:
What does not healthy mean
Answers
Answer:
not healthy means un-healthy
Explanation:
It means that you are out of shape or not in the best emotional or physical of place
Which part of the urinary system is not completely retroperitoneal? a. kidneys b. ureters c. bladder d. nephrons
Answers
Bladder of the urinary system is not completely retroperitoneal.
What is urinary system?
Blood filtration and urine production are the two main duties of the urinary system. The kidneys, renal pelvis, ureters, bladder, and urethra are the components of the urinary system. The body transforms nutrients from meals into energy.
the body parts responsible for producing and excreting urine. There are two sections to the urinary system. The ureters and kidneys make form the upper urinary system. The urethra and bladder are parts of the lower urinary tract.
The lower abdomen contains the triangle-shaped, hollow bladder. By ligaments linked to the pelvic bones, it is maintained in place. In order to hold pee, the bladder's walls relax and expand; in order to discharge urine through the urethra, the walls contract and flatten.
Therefore, Bladder of the urinary system is not completely retroperitoneal.
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microtubules start at the centrosome and then connect to the kinetochores, which are structures at the central region of chromosomes
Answers
Microtubules start at the centrosome and then connect to the kinetochores, which are structures at the central region of chromosomes. The centrosome is the main microtubule-organizing center (MTOC) in most animal cells, whereas plant cells lack a typical centrosome.
The two spindle poles are the central region of a chromosome where a kinetochore is connected. Microtubules are a type of cytoskeletal protein filament that plays a crucial role in the mechanics of cell division.
Microtubules, together with actin and intermediate filaments, form the cytoskeleton, which is the structural framework of the cell. Microtubules also transport vesicles and organelles, support cell shape, and mediate cell signaling.
They are also crucial in cell division, serving as a framework for the mitotic spindle, a structure that segregates chromosomes during cell division.
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Which best describes the permeability of a membrane?
O A. The total thickness of the membrane
B. The flexibility of the membrane
C. The number of molecules in the membrane
D. The ability to allow materials to cross a membrane
Answers
Answer:
D
Explanation:
D. is correct because the membrane works like a security guard and only allows certain materails to cross the membrane. The definition of permeability is the state or quality that allows something to pass through.
Permeability is a standard of easy motion of liquid and gases through a membrane or material. They allow the transportation and exchange of gases in a cell.
The statement that best describes the permeability of a membrane is:
Option D. The ability to allow materials to cross a membrane.
This can be explained as:
Permeability is a physical property of membranes and substances that allows the other molecules to move through them.It acts as a barrier from substances entering and exiting the cell or membrane and maintains the balance in a system.Therefore, permeability is the allowance of materials across the membrane.
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How far () would the muon travel before it decayed, if there were no time dilation?
Answers
The muon travel before it decayed, if there were no time dilation is approximately 92.4 m
The muon is a subatomic particle that only lasts for 2.2 μs. However, if there were no time dilation, it would be possible to calculate how far it could travel before decaying. In order to do so, one would need to know the muon's speed, which can be found using the Lorentz factor formula:γ = 1 / sqrt(1 - (v/c)^2)where v is the muon's speed and c is the speed of light.
Once the speed is found, the distance it can travel is simply the product of its speed and its lifetime:distance = speed x lifetime
For a muon travelling at 0.99c, its Lorentz factor would be 7.09.
Therefore, its speed would be v = 0.99c / 7.09 = 0.14c.
Using its lifetime of 2.2 μs, the distance it can travel is:distance = 0.14c x 2.2 μs = 92.4 m. In conclusion, if there were no time dilation, a muon travelling at 0.99c would travel approximately 92.4 m before decaying.
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Nick is smiling even though he does not feel happy. After a short time he feels happier. The best explanation for Nick's change in mood is
O bottom-up processing
o facial feedback
selective encoding
O justification of effort
Answers
o facial feedback
When someone replicates a emotion, they tend to feel it
Nick is smiling even though he does not feel happy and after a short time he feels happier too. This change in mood is due to facial feedback. Therefore, the correct statement is option B.
What is the facial feedback mechanism?Facial feedback is a psychological theory that suggests that the expression on a face of a person can influence their emotions and mood also. Therefore, when a person smiles even when they are not feeling happy, it can trigger positive emotions in the brain that change in mood.
Nick is smiling even though he is not feeling happy. Therefore, this act of smiling can trigger positive emotions in his brain and changes his mood because of the facial feedback mechanism.
However, bottom-up processing is the processing of sensory information from the environment to create a perception, while selective encoding is a process of selectively attending to and encoding certain aspects of a stimulus while ignoring others.
Therefore, Nick is smiling even though he does not feel happy and feels happy after a short time due to facial feedback.
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The left lung has ______ secondary bronchi since it has ______ lobes; the right lung has ______ lobes; and ______ secondary bronchi. Multiple choice question
Answers
The left lung has two secondary bronchi since it has two lobes; the right lung has three lobes; and three secondary bronchi.
The respiratory system comprises two lungs, each of which is divided into lobes. The left lung has two lobes, while the right lung has three lobes. The bronchial tree is divided into primary bronchi, secondary bronchi, and tertiary bronchi. Each lung has a primary bronchus, which is further divided into secondary bronchi. The left lung has two secondary bronchi since it has two lobes; the right lung has three lobes; and three secondary bronchi.
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the bond between the actin and myosin head weakens as a result of:______.
Answers
The bond between actin and myosin head weakens due to ATP binding to the myosin head. This process is crucial for muscle contraction and relaxation, allowing the cycle to continue and ensuring proper muscle function.
The bond between actin and myosin head weakens as a result of ATP binding to the myosin head. During muscle contraction, actin and myosin interact in a process called the cross-bridge cycle. This cycle consists of several steps that ultimately lead to muscle movement.
Initially, the myosin head binds to actin, forming a cross-bridge. Following this, a power stroke occurs, during which the myosin head pivots and pulls the actin filament, generating force and causing the muscle to contract. After the power stroke, the myosin head remains attached to actin in a low-energy state.
To weaken the bond between actin and myosin and allow muscle relaxation, ATP molecules bind to the myosin head. This binding causes a conformational change in the myosin head, reducing its affinity for actin and facilitating the release of the cross-bridge. The ATP molecule is then hydrolyzed into ADP and inorganic phosphate, providing energy for the myosin head to return to its high-energy state.
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Which of the following is the correlation coefficient a researcher would most likely obtain between scores on a measure of exposure to media violence and scores on a measure of aggressive behavior?
- 0.80
- 0.00
- 0.30
- 1.00
Answers
A moderate correlation between exposure to media violence and aggressive behavior, with correlation coefficients often falling between 0.30 and 0.80. 0.80 is correct .
It is likely that a researcher would obtain a correlation coefficient between 0.30 and 0.80 between scores on a measure of exposure to media violence and scores on a measure of aggressive behavior. This is because research has consistently found a moderate correlation between exposure to media violence and aggressive behavior. However, it's important to note that correlation coefficients can vary depending on the specific measures used and the population being studied. A correlation coefficient of 0.00 would indicate no correlation between the two variables, while a correlation coefficient of 1.00 would indicate a perfect positive correlation.
Therefore, 0.80 would be the most likely correlation coefficient obtained by researcher.
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