Answer:
Background extinction
Explanation:
The background extinction refers to the diminishing of the species at a fairly slow and constant rate. This extinction takes place because of the various environmental factors namely the changing climatic conditions, spreading of diseases, and destruction of habitat. It plays an important role in the natural process of evolution. This has been taking place continuously throughout the geological time and the species are undergoing continuous evolution over a specific period of time.
The <span>eukaryotic cells do not contain any organelles such a nucleus in particular. The difference in their structures for prokaryotes and eukaryotes will also include the presence of chloroplasts and mitochondria. Also, structures such as cell wall and chromosomal DNA structures are also some of the difference in the two types of cells. The answer to the second question is C.
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Caffeine will block the action of phosphodiesterase and thus the enzyme will not be activated to break down cAMP.
Caffeine has some effects which are psychological in nature. At the cellular level, caffeine blocks the action of phosphodiesteerase. Phosphodiesterase is the one that break down the cAMP inside the cell.
Answer:
Mouth: Mechanical digestion
Small Intestine: Chemical digestion
large Intestine: Absorption
Rectum: Egestion or collection of faeces
Stomach: Mechanical AND chemical digestion
Esophagus: Peristalsis
Explanation:
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Answer: C.) Produces genetically unique haploid cells
Explanation: Meiosis will produce genetically unique cells because they are meant to pass onto offspring, and they are haploid because there are half the number of chromosomes in them. The organism will receive 2 sets, one from each parent, so that is why each parent who's cells undergo meiosis have to produce haploid cells.
