No, although there are several theories with increasing evidence, there is still no way to know for sure how it occurred. The great mystery of the beginning of universe is way too vast and vague. Theories can only be proven by presenting a solid proof, but great creations such as universe itself doesn't have to be solved. Various possibilities must have happened or there must be a one conclusion leading to its existence; but moreover, it is not our problem to solve. The confirmation of beginning of its existence will only feed the curiosity of humans.
Answer:
True
Explanation:
Truly, the typical X shaped chromosomes is the result of DNA replication. When the DNA has replicated, it then condenses and coil into the X-shaped of the chromosome. This then implies that replicated chromosomes take the X-shaped structures seen under a microscope.
When this replication occurs, the chromosome is made of two structures that are identical. They are known as the sister chromatids. These chromatids are actually joined at the centromere.
Answer:
Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research.
During swallowing, the air passageway of the phaynx is covered by the epiglottis
Examples of metabolic processes that occur in living organisms are:
- Photosynthesis
- Breaking down of lipids
METABOLISM:
- Metabolism refers to the series of processes that involve the breakdown or build up of molecules to release energy or new products.
- Metabolism can either be catabolic or anabolic depending on how it occurs.
- Anabolism is the build up of large molecules from smaller ones while catabolism is the breakdown of large molecules into smaller ones.
- Example of metabolic processes are photosynthesis, breaking down of lipids.
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