Answer:
The enzymatic reactions of cellular respiration begin in the cytoplasm, but most of the reactions occur in the mitochondria. Cellular respiration occurs in the double-membrane organelle called the mitochondrion.
Explanation:
Digestive enzymes speedup reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecules the body can use. Without digestive enzymes, animals would not be able to break down food molecules quickly enough to provide the energy and nutrients they need to survive.
Answer:
B to recycle matter through the biosphere
Explanation:
The biogeochemical cycle describes how elements and compounds moves between the living and non-living component of the biosphere.
The cycle shows how matter which are composed of elements and compounds moves through various part of our world. In short, the cycle constantly proves that no matter is lost or destroyed. They are actually recycled. Elements such as hydrogen, oxygen, phosphorus, carbon, nitrogen are constantly being recycled as no new ones are formed. The biogeochemical cycle provides a vivid explanation as to why this occurs.
Answer:
Stage REM Sleep
Explanation:
According to the AASM (American Association for Sleep Medicine), the sleep has five stages. The first is the stage of wakefulness when you are starting to feel drowsy. Then the stage N1 is the transition into sleep: the breath becomes shallow, and the body doesn't move or just a little. In stage N2 the physiological function of the body start to decrease and is more difficult to wake up than the stage before. The next stage is the N3, which is the stage when is more difficult to wake up from all stages because is the deepest sleep, and in this stage, the movement of the eyes stops. The last stage is REM,(rapid eye movements), in this stage the brain is more active but the body is paralyzed.
