<span>diversified
Through random genetic mutations of a species over time, beings with unique characteristics emerged. Based on the suitability of the adaptation to the environment, the beings would either be able to successfully reproduce, or not, and perish. Successful adaptations would be passed down to children, resulting in the adaptations persisting at least in the short term. Charles Darwin is an excellent author to study to learn more about the theory of evolution.</span>
The sugar found in DNA contains one less oxygen molecule than the sugar found in RNA.
Carbon skeletons may vary in length, shape, number and location of double bonds and other elements covalently bonded to available sites.
A carbon atom contains four valence electrons thus, exhibiting a strong tendency to make covalent bonds with other atoms so as to complete its octet. Covalent bonds join carbon atoms together in long chains that create the skeletal framework for organic molecules.
A carbon atom could be linked to as many as four additional carbon atoms in an organic compound. Carbon atoms can also quickly form double bonds (where four electrons are shared among two atoms) and triple bonds (where six electrons are shared).
This variation in carbon skeletons contributes to the diversity and complexity of organic molecules.
To learn more about covalent bonds here
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The answer here is Prophase 1 (A)
In the event of meiosis, Prophase 1 occurs right after Interphase (stage when DNA is replicated). In the Prophase 1 stage, chromosomes condense and pair off and then exchange DNA between each other in a manner of crossing-over homologous chromosomes. The cross-over procedure forms a X-like region called Chiasmata that holds the homologous chromosomes intact.
Answer:
The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration.
Explanation:
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