What animal name starts with the letter X? I really need this!!!!! Please
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this is a cute little fishy.!!
Related Questions
Why are flowering plants more efficient at pollinating than gymnosperms?
Use the Internet to research a specific case where radiometric dating was instrumental in a significant archeological discovery. Describe this discovery and why it was so significant. Thanks! ^^
The makeup of all the different species in the world isgenetic diversity a population biological diversity a habitat
The ovaries are part of the endocrine system. TRUE or FALSE.
species diversity
a population
genetic diversity
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B. predict an unknown genotype of a purebred dominant plant
C. cross-breed dominant and recessive plants
D. give probabilities that a trait will appear
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B) Each element in the periodic table has a different number of valence electrons.
C) Valence electrons may be lost or gained by an atom when bonding occurs with another atom
D) When atoms collide with other atoms, they bond automatically
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Answer: Option (C) is the correct answer.
Explanation:
Electrons present in the outermost shell of an atom are known as valence electrons.
For example, atomic number of calcium is 20 and its electronic configuration is 2, 8, 8, 2. This means that there are 2 valence electrons in a calcium atom.
These valence electrons can be lost or gained by an atom according to the octet rule and ability to gain stability.
Hence, we can conclude that the statement valence electrons may be lost or gained by an atom when bonding occurs with another atom, is True for valence electrons.
Valence electrons may be lost or gained by an atom when bonding occurs with another atom. The correct option is C.
Valence electrons are the electrons in the outermost energy level, also known as the valence shell, of an atom. These electrons are involved in the bonding behavior of atoms, determining how they interact with other atoms to form chemical compounds.
When atoms come into contact and form chemical bonds, valence electrons can be shared, transferred, or rearranged between the atoms.
This process occurs to achieve a more stable electron configuration for each atom involved.
In some cases, atoms may lose valence electrons to become positively charged ions.
This occurs when an atom has fewer valence electrons than the stable, full outer electron shell configuration. These positively charged ions are called cations.
Thus, the correct option is C.
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B. Two cells, each containing the same number of chromosomes as the original cell
C. Four cells, each containing the same number of chromosomes as the original cell
D. Four cells, each containing half the number of chromosomes of the original cell
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Mitosis results in the production of two cells, each containing the same number of chromosomes as the original cell. Therefore, the correct answer is option b.
Mitosis is a type of cell division that results in the formation of two daughter cells, each of which is genetically identical to the parent cell.
The primary purpose of mitosis is to ensure that each daughter cell receives an identical set of chromosomes as the original (parent) cell.
Therefore, the number of chromosomes in the daughter cells produced by mitosis is the same as the number of chromosomes in the original cell.
Mitosis is a crucial process for growth, tissue repair, and the maintenance of a constant number of chromosomes in somatic (body) cells.
Options A, C, and D are incorrect because they do not accurately describe the outcome of mitosis:
- Option A suggests that the daughter cells have half the number of chromosomes, which is characteristic of meiosis, a different type of cell division that occurs in the formation of gametes (sperm and egg cells).
- Option C and Option D describe scenarios that do not occur during mitosis, as mitosis typically results in two daughter cells, not four.
Therefore, the correct answer is option b.
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Final answer:
Mitosis produces two daughter cells, each with the same number of chromosomes as the original cell.
Explanation:
The process of mitosis results in the creation of two daughter cells, each containing the same number of chromosomes as the original parent cell. This means the right answer is option B. Two cells, each containing the same number of chromosomes as the original cell. During the process of mitosis, the cell's chromosomes duplicate and the cell divides, producing two new cells that are genetically identical to the original cell. The purpose of mitosis is to allow an organism to grow and to replace cells that have been damaged or lost.
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Answer:
Scientific notation
Explanation:
It is a method of expressing very small numbers or very large numbers. If a number between 1 and 10 is multiplied by a power of 10, it will be expressed using scientific notation. For example 750,000,000 can be written in scientific notation as .