Answer:
Normally, the iron group in myoglobin has an oxidation state of 2+. However, when oxygen binds to the iron, it gets oxidized to an oxidation state of 3+. This allows the oxygen that is binded to have a negative charge, which stabilizes it. Myoglobin's affinity for oxygen is higher than hemoglobin.
They will have like a shell or strong suction or something to survive the rough tides
Answer: Small palpebral fissures, Small jaw, and Thin upper lip.
(Options: A, B, & C)
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Answer:
D. Alveoli
Explanation:
Functionally, the respiratory system is separated into a conducting zone and respiratory zone:
Conducting zone consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. These structures form a continuous passageway for air to move in and out of the lungs.
Respiratory zone is found deep inside the lungs and is made up of the respiratory bronchioles, alveolar ducts, and alveoli. These thin-walled structures allow inhaled oxygen (O2) to diffuse into the lung capillaries in exchange for carbon dioxide (CO2).
The respiratory zone begins where the terminal bronchioles join a respiratory bronchiole, the smallest type of bronchiole, which then leads to an alveolar duct, opening into a cluster of alveoli.
Answer:
None of these.
Explanation:
Cancer mutations affect cell cycle regulators.
Cell cycle is a highly regulated process by the regulators that can promote cell cycle or inhibit the cycle. Genes that encode for those regulators are classified into two groups:
- proto-oncogenes-encode for positive regulators such as growth factor receptor. If a cancer mutation occurs in the proto-oncogene it becomes oncogene and its product is overactivated. The increased avtivity of positive regulators leads to abnormal cell division.
- tumor suppresor-the products of such genes blocks the cell cycle, but after the mutation they become inactive, which leads to uncontrolled cell cycle.
