The structure that absorbs water and forms feces is the: MCQ with Answer and Explanation

Explanation:
Hemoglobin has a much higher affinity for oxygen than for carbon dioxide; it binds O2 readily in the lungs. Inside RBCs, the enzyme carbonic anhydrase rapidly catalyzes the conversion of CO2 and water into carbonic acid. Approximately 70% of CO2 is transported in the blood as bicarbonate ions in the plasma. Thus, statements 2 and 3 are correct.

Explanation:
Phosphorus is a primary macronutrient (along with nitrogen and potassium) required in relatively large amounts for nucleic acids, ATP, and phospholipids. Iron, zinc, and copper are micronutrients needed in trace amounts. Macronutrients include C, H, O, N, P, K, Ca, Mg, S. Micronutrients function as enzyme cofactors.

Explanation:
Amoeba, a protozoan, moves and captures food using temporary, foot-like extensions of its cytoplasm called pseudopodia (false feet). This type of movement is called amoeboid movement and is driven by the assembly and disassembly of microfilaments (actin) in the cytoskeleton. Cilia and flagella are hair-like structures used by other protozoans like Paramecium and Euglena.