Mount Everest because it is the tallest object in the world
d, planarians avoid light
Answer:
Honey bee or pathogen attacks by penetrating chemical components in the body, eliciting inflammation.
Explanation:
Honey bee stings with the barbed stinger located at the end of its abdomen which penetrates the skin in order to inject the venom from his venom sac consisted of organic molecules and proteins. This can cause pain, swelling and inflammation.
The methanoic acid in its venom causes the inflammation. Pathogens penetrate mechanical components in plants that affect the mechanisms of the plant.
Answer:
The Oxygen (O2) from Hemoglobin A from the bloodstream is transferred to Hemoglobin F in the placenta due to its higher affinity for Oxygen (O2).
Explanation:
Hemoglobin is a metalloprotein that binds to Oxygen (O2) using its central Iron (Fe) atom which is bound to the heme group.
Hemoglobin A is glycated hemoglobin found in the bloodstream. It functions primarily in the Oxygenated red blood cells. There it carries Oxygen to the various tissues. Due to the coupled monosaccharide (usually glucose), it has less affinity for oxygen and would easily release its bound oxygen to a molecule with higher affinity.
Hemoglobin F found in the placenta is the Hemoglobin found in the placenta during pregnancy and for a few weeks after birth. It has a higher affinity for Oxygen and would readily attract Oxygen from Hemoglobin A due to its lack of bonding with any sugar particularly 2,3-bisphosphoglycerate (2,3-BPG or 2,3-DPG).
This difference allows the fetus to access oxygen optimally from the mother's oxygenated hemoglobin.
Hence the statement is best comleted as such "This difference in affinity for Oxygen (O2) allows Oxygen (O2) from the hemoglobin A in the bloodstream to transfer to the hemoglobin F in the placenta".
Answer:
True.
Explanation:
They can be divided independently in plants.
