Answer:
Stem cells are the body's raw materials
Explanation:
Stem cells are the body's raw materials — cells from which all other cells with specialized functions are generated. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells.
Stem cells are different from the other body cells as these are unspecialized cells which can undergo division and renew on their own. The stem cells can undergo specialization by the process of cellular differentiation.
What are Stem cells?Stem cells can be defined as the body's raw materials. These are the cells from which all the other cells with specialized functions are generated.
Embryonic stem cells are the pluripotent stem cells derived from the inner cell mass of a blastocyst. Blastocyst is an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage in 4 to 5 days post fertilization, at which time they consist of 50 to 150 cells.
Stem cells are different from the other cells in the body in three ways which are the stem cells can divide and renew themselves over a long time. Stem cells are unspecialized cells, so they cannot do specific functions in the body unless they undergo cellular differentiation. Stem cells have the potential to become specialized cells, such as muscle cells, blood cells, and brain cells by undergoing cellular differentiation.
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13. Keep a
to help you identify trends in your fitness habits that are particularly effective. (1 point)
grade book
sharp memory
video blog
fitness journal
a flea and dog are a. example of
Answer:
Parasitism
Explanation:
A flea and a dog go with this example because a flea irritates the dogs skin and feeds on its blood. (Just like how some sea animals carry bacterial diseases. Like Shrimp or something)
Hope this helped xoxo! :)
What are some changes that can occur in ecosystems?
Answer:
Some changes that can occur in ecosystems are seasons, tide cycles, population sizes, succession, evolution, landscape changes, and climate changes.
Explanation:
hope it helps you sir or ma'm
How can larger carbon-based molecules and amino acids be a result of chemical reactions between sugar molecules and other atoms?
Starting with the basic building blocks, which is the correct order of levels of organization of complex organisms?
A. organ systems --> cells --> tissues --> organs
B. cells --> tissues --> organs --> organ systems
C. tissues --> organs --> organ systems --> cells
D. organs --> organ systems --> cells --> tissues
Answer:
A
Explanation:
Which of the following are functions related to the expression of MHC molecules?
a. To display self-peptides to test developing T cells for autoreactivity
b. To display self-peptides to demonstrate cell health
c. To display self-peptides to maintain self-tolerances
d. To display foreign peptides
e. All of the answers are correct.
Answer:
e. All of the answers are correct.
Explanation:
The major histocompatibility complex (MHC) is a locus that contains several polymorphic genes. These genes are known to encode different components of the immune system, especially cell-surface proteins which present antigens to the T cell receptors during adaptive immune responses. The MHC genes are classified into Class I, Class II and Class III:
1- MHC class I genes encode cell surface molecules that present peptides (antigens) to cytotoxic T lymphocytes (i.e., killer T cells)
2- MHC class II genes encode cell surface molecules that present antigens to CD4+ T cells
3- MHC class III genes encode proteins that are not involved in antigen presentation (i.e., components of the complement cascade, cytokines, etc)
What human activity provides a reasonable analogy for the movement of kinesin molecules along microtubules?a. running on a treadmill.b. climbing a rope hand over hand.c. shooting a fire hose at a beach ball.d. being one of many rowers in a boat .
Answer:
The correct answer is - option. b climbing a rope hand over hand is correct
Explanation:
The movement of the kinesin molecules led by the head of one kinesin followed by the second one after another same as one hand moves on the rope at a time and followed by the other hand during climbing the rope.
The movement of the kinesin microfilament is due to the increased affinity by ATP of the head of the kinesin for the microtubule. However, the hydrolysis of ATP decreases its affinity so it slides or moves to the plus end.
what makes terrestrial different
Answer:
Terrestrial planets are Earth-like planets made up of rocks or metals with a hard surface. Terrestrial planets also have a molten heavy-metal core, few moons and topological features such as valleys, volcanoes and craters.
Explanation:
Is that what your talking about?
i need help on this please ASAP
Answer:
What's the question? Its not written here
Answer:
Where is the question?
Explanation:
What term is used to describe the number of individuals moving into a population?
URGENT PLEASE HURRY
Answer:
starting point 3 traveling at a velocity of 15 I think
Explanation:
sorry if you get it wrong
help idk this answer
Answer:
d
Explanation:
Type 1 diabetes is caused by destruction of beta cells in the pancreas that produce insulin. Which of the following best explains why a person with this disease needs medication?
a. Medication is needed to act as a signaling molecule to activate the signal transduction pathway.
b. Medication is needed to allow alternate signaling transduction pathways to control glucose levels.
c. Medication is needed to open channels to allow signaling molecules to enter pancreatic cells.
d. Medication is needed to serve as second messengers to regulate glucose uptake by cells.
Answer:
the answer is a. Medication is needed to act as a signaling molecule to activate the signal transduction pathway.
i took the quiz
Medication is needed to act as a signaling molecule to activate the signal transduction pathway. So, the correct option is (A).
What is Type 1 Diabetes?Type 1 diabetes also called insulin-dependent or juvenile diabetes which is usually develops in children, adolescents, and young adults, but it can occur at any age. A condition in which the immune system destroys the insulin-producing cells in the pancreas. These are called beta cells.
There are several signs of type 1 Diabetes which include:
Extreme thirstIncreased hungerDry mouthUpset stomach and vomitingFrequent urinationWhen a person suffering from this disease needs medication which is need to act as signaling molecule to activate the signal transduction pathway. Type 1 Diabetes is characterized by a progressive loss of insulin-producing β-cells in the islets of the pancreas. Immune destruction of β-cells is partly mediated by high levels of pro-inflammatory cytokines.
Thus, medication is needed to act as a signaling molecule to activate the signal transduction pathway. So, the correct option is (A).
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What is detritivores
Answer:
An animal which feeds on dead organic material, especially plant detritus.
Explanation:
Detritivores, are heterotrophs that obtain nutrients by consuming detritus. There are many kinds of invertebrates, vertebrates and plants that carry out coprophagy. By doing so, all these detritivores contribute to decomposition and the nutrient cycles.
To produce the highest possible oxygen concentration in the blood, gas exchange occurs in
only one direction at the respiratory membrane-from the lung to the blood.
O True
O False
Answer:
True
Explanation:
Answer:
false
Explanation:
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
Which correctly describes crossing over?
a.)the process whereby nonsister chromatids exchange genetic material
b.)the process whereby homologous chromosomes are pulled to opposite poles of the cell
c.)the process whereby sister chromatids are pulled to opposite poles of the cell
d.)the process whereby homologous chromosome pairs align randomly along the metaphase plate
Sucrose is an organic compound made by plants for quick energy.
What type of organic compound is sucrose?
(a.protein
(b.carbohydrate
(c.lipid
(d.nucleic acid
Which describes a altocumulus cloud?
a.
high, feathery cloud
c.
low storm cloud
b.
puffy mid-level cloud
d.
high cloud made of ice crystals
Please select the best answer from the choices provided
A
B
C
D
Answer:
B. Puffy mid-level cloud
What compound do plants get from their roots for photosynthesis?
options:✨✨✨
Carbon Dioxide
Oxygen
Glucose
Water
What are three statements mentioned in the video that are included in the cell theory?
Answer:
1. all living things are composed of cells,
2. cells are the basic units of structure and function in living things.
3. new cells are produced from existing cells.
C personalities are organized and controlled. They take their time completing tasks accurately, like to research things thoroughly, and are always prepared. Because they put so much time and effort into everything they do, they hate to be criticized. They are perfectionists at heart and take even the smallest complaint personally. This makes them extremely difficult to confront. The best way to approach it is to focus on parts of the problem largely out of the C personality’s control or aspects of the problem they might not have considered. Make it clear that you appreciate all of their efforts and that you’re bringing something to their attention because it’s a variable that they need to have in the equation in the future. No matter what, don’t frame the conflict as a personal attack. If you do, the C personality will likely become resentful and go out of their way to avoid future interactions with you....!!!!!!
report about Reduce, Reuse, Recycle and example
Answer:
reduce is reducing the amount of plastic we use reuse is reusing a plastic item for something else recycle is convert into a new material hope this helps!
Explanation:
help me please! this is timed
how to get sick with fever fast
Answer: Over exhaust your self and stay up for two days no sleep.
which is a characteristic of pseudoscience
resistance to change
continually changing
involves a step-by-step method
updated by new technology
Answer:
a
Explanation:
i took the test
what is the lagging strand synthesized by?
Answer: Unlike leading strands, lagging strands are synthesized as discrete short DNA fragments, termed 'Okazaki fragments' which are later joined to form continuous duplex DNA. Synthesis of an Okazaki fragment begins with a primer RNA-DNA made by polymerase (Pol) α-primase.
Explanation:
n
Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?
SERE
motion
stored
internal
heat
Answer:
internal energy.
Which of these statements about the world's food supply is most accurate? A. Overnutrition is greater world problem than undernutrition. B. Food is more expensive than in the pre-1970 world. C. Some food is diverted for use as fuel. D. Less food per person is produced today than in the past.
Answer:
C. some food is diverted for use of fuel
A car moves with an initial velocity of 15 m s-1 and accelerates with constant acceleration 4 m s-
2 for 50 seconds. What is the total distance travelled?
Why do you think prokaryotic cells do not have all the organelles that eukaryotic cells do? What does this tell you about prokaryotic cells?
Answer:
Explanation:
A prokaryotic cell is a type of cell that does not have a true nucleus or membrane-bound organelles. Organisms within the domains Bacteria and Archaea are based on the prokaryotic cell, while all other forms of life are eukaryotic
A prokaryotic is a primitive cell that lacks organelles, unlike the eukaryotic cells, and are simple organisms.
What are prokaryotes?Prokaryotes are organisms that are simple and evolved before the complex eukaryote. They include bacteria and archaea that are simple and lack organelles that are found in eukaryotes.
They do not have a nucleus and rather have their genetic material disposed of as nucleoids in the center of the cell that undergoes the simple process of the central dogma.
The simple cellular processes and reproductive methods are the reason they lack many organelles. This tells that prokaryotes are simple and primitive types of cells.
Therefore, prokaryotes lack a distinct nucleus.
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How are coral reefs similar to tropical rainforests?
Ó Both are home to just a few types of rare animals.
Both can easily be restored if they are destroyed.
Both support a huge quantity and variety of organisms.
O Both are found in all types of climates around the world.
Answer:
Both support a huge quantity and variety of organisms.
Explanation: