The type of algae that is used as a dietary supplement and is a rich source of protein is: MCQ with Answer and Explanation

Explanation:
Cytoplasm is the semifluid material between the plasma membrane and the nucleus, composed of cytosol, organelles, and inclusions. It is the site of many metabolic reactions. Nucleoplasm is inside the nucleus, protoplasm includes cytoplasm and nucleoplasm, and matrix refers to the inner compartment of mitochondria.

Explanation:
The hepatic portal vein is a unique blood vessel in the circulatory system that carries nutrient-rich, but potentially toxin-laden, blood from the gastrointestinal tract (stomach, intestines), spleen, and pancreas directly to the liver, rather than to the heart. This allows the liver to process absorbed nutrients, store glycogen, detoxify harmful substances, and regulate blood composition before the blood enters the systemic circulation via the hepatic veins to the inferior vena cava.

Explanation:
Crossing over occurs during prophase I of meiosis, not in mitosis. Mitosis produces identical diploid cells, meiosis reduces chromosome number by half, and cytokinesis divides the cytoplasm.