The type of stem cell is able to differentiate into any cell type, including extra embryonic placental cells is totipotent cells. Thus, option A is correct.
Some body parts, for example, such as muscles, red blood cells, nails, skin, and hair, wear out and or they die, and therefore they are constantly replaced. To replace the worn out parts and dead parts, there is need for cell division.
Other body parts last longer. For example, the liver will last as long as a person lives, and in fact liver failure is one way a person will die. Liver cells are normally not replaced, and therefore there is normally no cell division in the liver.
Cell division in these body parts would simply make them bigger and bigger and that may result in illness or even death. In fact, cancer cells are cells that should not be dividing but they continue to divide non-stop because something went wrong.
Therefore, The type of stem cell is able to differentiate into any cell type, including extra embryonic placental cells is totipotent cells. Thus, option A is correct.
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Answer:
A. Totipotent Cell
Explanation:
C. absorption
D. reflection
The correct answer is (b) Refraction
When a beam of light is passed from one medium to another medium then the beam of light bends when it passes from one medium to other, this phenomenon is called as Refraction. This change can be determined by measuring the change in the wave speed and the initial direction of wave relative to the direction of the change in speed. Example: when a beam of light is passed through a prism, when a laser light is passed through a ice cube.
Answer: Mutations are the most fundamental way to add new genes to a gene pool.
Explanation:
A mutation is either permanent or temporary changes that may occur in the DNA sequence of the organism that makes up a gene which is the functional unit in the organism. These mutations will add genetic variations in the gene pool of the population. Those mutations which are hereditary which means they can be transmitted from parents to offsprings are called as germline mutations.
Acquired (somatic) mutations are those mutations which occur's during a persons life. These mutations occur due to ultraviolet radiations. These mutations occur in the somatic cells not in the germ cells therefore, these cannot be passed from one generation to the next.
Answer:
Fat has more than twice as many calories per gram as carbohydrates and proteins.
Explanation:
The development of different species are similar.
The DNA of different species are similar.
Experiments can form the molecules of life out of chemicals.
Fossils show a history of life that gets more complex.
Fossils show different stages of evolution in a species.
The fossil record is backed up by the geological record.
Answer:
I think that the answer is 3567