Stem cells are the source of other cells, with some referred to as totipotent or multipotent based on their differentiation potential. Transformed cells or cells from tumors can give rise to continuous or immortal cell lines that grow indefinitely in culture.
Explanation:Cells that remain as sources of other cells are known as stem cells. Stem cells have the unique capacity to self-renew and differentiate into various cell types. The ultimate stem cells found in the early embryonic stages are referred to as totipotent, as they can differentiate into any cell type necessary for the development of an organism. As development progresses, stem cells can become multipotent, retaining the ability to develop into multiple, but not all, cell types within a certain lineage, such as red or white blood cells. In specific cultures, certain cells like transformed cells or those from tumors can result in a continuous cell line and exhibit characteristics such as indefinite growth in culture when the medium is replenished; these are termed cell lines or, in some cases, immortal cell lines.
Stem cells are the sources of other cells, with varying degrees of differentiation potential: totipotent, pluripotent, and multipotent. In laboratory conditions, cells can also form a continuous cell line that can proliferate indefinitely, which is often used for research and medical purposes.
Explanation:Cells that remain as sources of other cells are commonly known as stem cells. These cells have the unique ability to differentiate into various cell types or continue to replicate as more stem cells. Notably, there are different potency levels of stem cells; totipotent stem cells can differentiate into any cell type or even an entire organism, pluripotent cells can become any cell type except for totipotent cells, and multipotent cells can differentiate into a limited range of cells within a lineage, such as blood cells. In a laboratory setting or medical applications, certain cells can be manipulated or derived to form a continuous cell line, which can be subcultured many times or even grown indefinitely under the right conditions. However, these cells sometimes exhibit chromosomal abnormalities and are not normal, especially if they originate from transformed cells or tumors. They may undergo transformations becoming 'cell lines' that proliferate indefinitely.
Lydia is often described as having a positive outlook on life. She assumes the best of people and situations. Lydia exemplifies ________.
Answer:
Optimism.Explanation:
Optimism could be defined as a spiritual and mental disposal for positive outcomes, refers to the best future coming, the opposite of pessimism.
A optimistic person is who have a positive view of situation, even if it isn't seem like that, even these kind of people see positiveness in others, like Lydia.
A ball is thrown horizontally from the roof of a building 7.8 m tall and lands 9.5 m from the base. what was the ball's initial speed
The problem deals with finding the initial horizontal speed of a ball thrown from a building, using kinematic equations and the principles of projectile motion.
Explanation:The student is asking about the initial speed of a ball that is thrown horizontally from the roof of a building. To solve this problem, we need to use the principles of kinematics, specifically the equations of motion for uniformly accelerated bodies. Since the ball is thrown horizontally, its initial vertical speed is 0 m/s. The only vertical motion is due to gravity. We can calculate the time it takes for the ball to hit the ground using the formula for free fall distance d = rac{1}{2}gt^2, where d is the distance fallen, g is the acceleration due to gravity (9.8 m/s^2), and t is time. Solving for t, we find that t = rac{2d}{g}.
Which would usually be studied by a geologist
Pleaseeee hurry!!!
Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40.
Which of these is an accurate statement?
A) Atom A has more protons than Atom B.
B) Atom A has one less proton and one more neutron than Atom B.
C) Atom A has an extra nucleon compared to Atom B.
D) Atom A has one more proton and one more electron than Atom B.
Answer: C
Explanation: this is called an isotope which has equal number of protons but different numbers of neutrons in the nucleus hence different atomic mass but no difference in chemical properties.
Calculate the moment of inertia of uniform circular disc of mass 500g, radius 10cm about 1.the diameter of the disc. 2. the axis tangent to the disc parallel to its diameter 3.the axis through the center of the disc and perpendicular to its plane
Mass of the disc is equal to 500 g (m=500 g)
Radius of the disc if equal to 10 cm (r=10 cm)
1. The diameter of the disc:
D = 1/4 (m) (r)^2
= 1/4 (500) x 10^2 g cm^2
= 12500 g cm^2
2. The axis tangent to the disc and parallel to its diameter:
= 1/4 (m) (r )^2 + m (r )^2
= 5/4 x 500 x 10^2 g cm^2
= 62500 g cm^2
3. The axis through the center or the disc and perpendicular to its plane:
= 1/2 (m) (r )^2 – ½ x 500 x 10^2 g cm^2
= 25000 g cm^2
The moment of inertia for the disc about its diameter is 0.0025 kg.m², the moment of inertia about an axis tangent to the disc parallel to its diameter is 0.0075 kg.m², and the moment of inertia about an axis through the center and perpendicular to the disc's plane is 0.005 kg.m².
Explanation:The moment of inertia (I), a measure of an object's resistance to rotational motion about an axis, varies depending upon the axis of rotation. Various formulae apply for different axes:
About the diameter of the disc: Here, the formula is I = 1/2 ×m ×R², where m is the mass and R is the radius. Substituting the provided values(m = 500g = 0.5kg, R = 10cm = 0.1m), we find that the moment of inertia about the diameter is I = 1/2 ×0.5kg × (0.1m)² = 0.0025 kg.m².The axis tangent to the disc parallel to its diameter: For this case, we would use the parallel axis theorem: I = I_center of mass + m×d². Here, d is the distance from the center of mass to the new axis, which equals the radius (R). Since the moment of inertia about the diameter (I_center of mass) is 0.0025kg.m², the moment of inertia for this axis is I = 0.0025 kg.m² + 0.5kg × (0.1m)² = 0.0075kg.m².The axis through the center of the disc and perpendicular to its plane: Here, the formula is I = m × R². Substituting the given values, we find the moment of inertia is I = 0.5kg × (0.1m)² = 0.005 kg.m².Learn more about Moment of Inertia here:https://brainly.com/question/30051108
#SPJ11
A bucket of mass 1.90 kg is whirled in a vertical circle of radius 1.45 m . at the lowest point of its motion the tension in the rope supporting the bucket is 24.0 n . find the speed of the bucket
What is the velocity of a wave with a frequency of 760 Hz and a wavelength of 0.45 m?
Final answer:
Velocity of a wave is obtained by multiplying its frequency by its wavelength. In this case, the velocity of the wave with a frequency of 760 Hz and a wavelength of 0.45 m is 342 m/s.
Explanation:
Velocity of a wave is calculated by multiplying the frequency of the wave by its wavelength. In this case, with a frequency of 760 Hz and a wavelength of 0.45 m, the velocity of the wave can be found by multiplying the frequency and the wavelength: 760 Hz x 0.45 m = 342 m/s.
What do the vertical columns in the periodic table indicate?
A.periods
B.liquids
C.synthetic elements
D.groups and families
The correct answer is
D. Groups and Families
I did the quiz nd this was the right answer
Hopes this helps :)
jack tries to place magnets on his refrigerator at home, but they won’t stick. What could be the reason?
I Honestly Think Its A, If Its Wrong Im Sorry. But Im Sure Its A
During which portion of the earth's revolution around the sun is the northern hemisphere tilted toward the sun?
what essential characteristic does a good experiment have? a. a control group is given the experimental treatment. b. a single variable is tested. c. a control is used. d. both b and c
A good experiment should have a control and test a single variable.
Explanation:A good experiment should have the essential characteristic of using a control to compare the results of the experimental treatment. This ensures that any changes or effects seen in the experimental group can be attributed to the treatment being tested and not to other factors. Additionally, a good experiment should test a single variable to isolate the specific factor being studied.
For example, if a scientist is testing the effect of a new fertilizer on plant growth, they would have two groups of plants - one receiving the new fertilizer (experimental group) and one receiving no fertilizer (control group). By comparing the growth of the two groups, they can determine if the fertilizer had any effect.
Learn more about the Characteristics of a good experiment here:https://brainly.com/question/35519973
#SPJ6
A girl sits on a tire swing and is pushed in a circular motion by her father. Her tangential speed is 2.8 m/s and the girl travels in a circle with a diameter of 4.0 m. What is the girl's centripetal acceleration?
Answer:
[tex]a_c = 3.92 m/s^2[/tex]
Explanation:
tangential speed of the girl is given as
[tex]v_t = 2.8 m/s[/tex]
diameter of the circle is given as
[tex]d = 4.0 m[/tex]
so here the radius of the circle is given as
[tex]R = 2.0 m[/tex]
now we know that centripetal acceleration of the object moving in circle is given as
[tex]a_c = \frac{v^2}{R}[/tex]
[tex]a_c = \frac{2.8^2}{2}[/tex]
[tex]a_c = 3.92 m/s^2[/tex]
Why non-metals aren't good at conducting electricity?
How is Marta’s study biased
Marta's study is based on how much junk food/ healthy food does boys vs. girls consume.
Answer:
Marta already thinks one group eats healthier than the other.
Marta does not clearly define “healthy foods.”
Explanation:
Rarefaction occurs only in a ___ wave.
A: transverse
B: longitudinal
C: sympathetic
D: forced
Answer:B: longitudinal
Explanation:
What is the relationship between work and power
Power is a measure of how quickly work is done or how quickly energy is transferred. The relationship between work and power is (P) = W ÷ t
The following equation describes how work and power are related:
Power (P) = W ÷ t
The power production is larger when the same amount of work is completed in less time. On the other hand, if the work is spread out over more time, the power production is lower.
For instance, if two people work equally hard but one does the task faster than the other, that person is exerting more power than the person who takes longer.
This relationship demonstrates how power is influenced by both the quantity and duration of work.
Therefore, The relationship between work and power is (P) = W ÷ t
To know more about the power:
https://brainly.com/question/19382734
#SPJ6
Which layer is thinnest under the oceans and thickest in the mountains
What is the mission of the mars Land Rover, and why is it important?
If i measure the parallax of a star to be 0.125 arc seconds, what is its distance in parsecs?
To compute for the distance of a star given the parallax, we simply have to take the reciprocal of the magnitude of parallax. In this case, distance is:
distance = 1 / parallax
distance = 1 / 0.125
distance = 8 parsecs
Assume that you stay on the earth's surface. what is the ratio of the sun's gravitational force on you to the earth's gravitational force on you?
The ratio of gravitational force of the sun to the earth's gravitational force is about 1 : 1580
[tex]\texttt{ }[/tex]
Further explanationNewton's gravitational law states that the force of attraction between two objects can be formulated as follows :
[tex]\large {\boxed {F = G \frac{m_1 ~ m_2}{R^2}} }[/tex]
F = Gravitational Force ( Newton )
G = Gravitational Constant ( 6.67 × 10⁻¹¹ Nm² / kg² )
m = Object's Mass ( kg )
R = Distance Between Objects ( m )
Let us now tackle the problem !
[tex]\texttt{ }[/tex]
Given:
radius of Earth = Re = 6.4 × 10⁶ m
mass of the Earth = Me = 6.0 × 10²⁴ kg
distance from Sun to Earth = Rs = 147 × 10⁹ m
mass of the Sun = Ms = 2.0 × 10³⁰ kg
Asked:
ratio of gravitational force of the sun and the earth = ?
Solution:
[tex]F_s : F_e = G \frac{ m M_s }{R_s^2} : G \frac{ m M_e }{R_e^2}[/tex]
[tex]F_s : F_e = \frac{ M_s }{R_s^2} : \frac{ M_e }{R_e^2}[/tex]
[tex]F_s : F_e = \frac{ 2 \times 10^{30} }{(147 \times 10^9)^2} : \frac{ 6.0 \times 10^{24} }{ (6.4 \times 10^6)^2}[/tex]
[tex]F_s : F_e \approx 1 : 1580[/tex]
[tex]\texttt{ }[/tex]
Learn moreImpacts of Gravity : https://brainly.com/question/5330244Effect of Earth’s Gravity on Objects : https://brainly.com/question/8844454The Acceleration Due To Gravity : https://brainly.com/question/4189441[tex]\texttt{ }[/tex]
Answer detailsGrade: High School
Subject: Physics
Chapter: Gravitational Fields
The ratio of the Sun's gravitational force on an individual to that of Earth's can be found using Newton's Law of Universal Gravitation, which takes into account the masses of the Earth and Sun and the distances from the individual to the centers of these celestial bodies.
Explanation:
To calculate the ratio of the Sun's gravitational force on you to the Earth's gravitational force on you, we would use Newton's Law of Universal Gravitation, which states that the force of gravity between two masses is proportional to the product of their masses and inversely proportional to the square of the distance between their centers. For an object of mass m on the Earth's surface, the gravitational force it experiences due to the Earth (Fearth) can be calculated using the formula:
Fearth = G × (Mearth × m) / r2
where G is the gravitational constant, Mearth is the mass of the Earth, m is the mass of the object, and r is the radius of the Earth. Similarly, the gravitational force due to the Sun (FSun) is:
FSun = G × (Msun × m) / d2
where Msun is the mass of the Sun and d is the average distance from the Earth to the Sun. Given that both m and G are constants and cancel out when we take the ratio FSun/Fearth, the final ratio depends only on the masses of the Earth and Sun and the distance between the Earth and the Sun relative to the radius of the Earth.
Learn more about the Gravitational Force Ratio here:https://brainly.com/question/7584793
#SPJ3
If a person has the values for an objects density and volume , what value can be calculated
Answer:If a person has the values for an object’s density and volume, what value can be calculated?
Explanation: The answer is C
When you add heat energy the molecules move ______ and _____
If you wanted to learn more about about the experiences of an African American pioneer in a scientific field, whose life would you research?
To learn more about the experiences of an African American pioneer in a scientific field, researching figures like Dr. Percy Julian, a chemist, or Dr. Charles Drew, a medical researcher, would be insightful. Additionally, delving into 19th-century African American inventors and the legacy of African American women journalists can broaden one's understanding of the impacts made by these trailblazers in their respective fields.
If you are interested in learning more about the experiences of an African American pioneer in a scientific field, one impactful individual to research would be Dr. Percy Julian. He was a chemist who made significant contributions to the synthesis of medical drugs such as cortisone, steroids, and birth control pills. Moreover, you might want to explore the work of Dr. Charles Drew, a surgeon and medical researcher who developed improved techniques for blood storage and established large-scale blood banks early in World War II, saving countless lives.
Looking into the contributions of African American inventors of the 19th century can provide insight into the enduring impacts of their innovations on today's society. Furthermore, understanding how pioneering African American women journalists have opened opportunities for diverse voices in media can offer a broader perspective on the intersection of race, gender, and professional progress in the field of journalism.
Delving into Black history, one realizes its significance in identifying overlooked figures who have shaped our present. This could involve investigating individuals who played key roles in impactful events, like the psychologists whose research influenced the Brown v. Board of Education civil rights case. Identifying such individuals not only honors their contributions but also fosters a more inclusive understanding of history's narrative.
what i the distance that light moves in a year called
nocturnal year
solar year
planetary year
light-year
Answer:
correct answer is - light year
Explanation:
When a loop of current-carrying wire turns continuously in a magnetic field, a _________ is created.?
Answer: The correct answer is torque.
Explanation:
When a loop of current carrying wire turns continuously in a magnetic field then torque will act on the loop. The loop tends to rotate such that its normal becomes aligned with magnetic field. Torque is a force which rotate the object about an axis.
Torque depends on the orientation of normal to the coil to the direction of the magnetic field.
Therefore, when a loop of current-carrying wire turns continuously in a magnetic field, torque is created.
how long will it take to travel 200,000m traveling 10m/s
The ________ approach emphasizes looking at the whole, rather than the sum of its parts.
psychodynamic
behavioral
functionalism
Gestalt
When using science to investigate physical phenomena, which of the following is NOT a characteristic of the event must exist?
Ignoring effects caused by differences in depth, the pressure in a contained fluid is __________.
a. the same throughout the fluid
b. higher in some places and lower in other places
c. unknown as long as the fluid is contained
Which of the following is not an application of Doppler technology?
police speed guns
weather radar
ultrasound imaging of the liver
determining the motion of a star
Answer:
ultrasound imaging of the liver.
Explanation:
Liver ultrasound is not an application of the Doppler effect. The use of ultrasound is more common in medicine, for example, during pregnancy.
Another application in medicine is with the movement of blood. It is a flowmeter which allows the blood flow to be discovered through the Doppler effect, since a sound wave affects the red blood cells that are in motion inside the vessel and collect the echo signal.