Answer:
species richness is the number of species in an ecosystem
The correct answer is pyruvate
Uptake of O2 by the blood in the lungs is controlled primarily by----.the PO2 of alveolar air.
option D is correct.
How o2 is transported in the blood mainly by?
Hemoglobin is the primary carrier of oxygen in humans. Approximately 98% of total oxygen transported in the blood is bound to hemoglobin, while only 2% is dissolved directly in plasma
Where does oxygen bind to hemoglobin?
. Oxyhemoglobin is formed during physiological respiration when oxygen binds to the heme component of the protein hemoglobin in red blood cells. This process occurs in the pulmonary capillaries adjacent to the alveoli of the lungs.
How is oxygen transported in the blood ?
-Most O2 is transported by hemoglobin as oxyhemoglobin (Hb—O2) within red blood cells. -the heme portion of hemoglobin contains four atoms of iron, each capable of binding to a molecule of O2. -oxygen and hemoglobin bind in an easily reversible reaction from form hemoglobin
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Answer:
carbohydrates are broken down into cells for energy
Explanation:
Vascular plants have a vascular system while nonvascular plants have NO vascular system.
Explanation:
The vascular system is made of phloem – that transports food- and xylem- that transports water and minerals- in the higher plants. Examples of these higher plants are like trees and shrubs. These plants can take up water and nutrients from the soil and transport them up the plants to the leaves.
Lower plants have no vascular system (avascular). They mainly absorb food and water readily from their environment even through their leaves. This is why these plants are mainly found in humid areas like waterways, like canals. Examples of such lower plats are ferns and mosses.