The type of immunity that a newborn acquires from breast milk is: MCQ with Answer and Explanation

Explanation:
Rennin (chymosin) is a proteolytic enzyme found in the gastric juice of young mammals; it curdles milk by converting soluble caseinogen into insoluble casein, slowing its passage and allowing pepsin to digest it. Pepsin is the main adult protease, trypsin is pancreatic, and lipase digests fats. Rennin is now produced biotechnologically for cheese making.

Explanation:
Prokaryotes lack a true nucleus and nuclear membrane; their genetic material is concentrated in a nucleoid region. They possess ribosomes (70S), a plasma membrane, and usually a cell wall. The absence of membrane-bound organelles is a defining feature distinguishing them from eukaryotes. Thus, the nuclear membrane is absent.

Explanation:
In C4 plants, the initial fixation of CO2 occurs in the mesophyll cells. The primary CO2 acceptor is a 3-carbon compound, phosphoenolpyruvate (PEP). The enzyme PEP carboxylase catalyzes the reaction, forming a 4-carbon compound, oxaloacetate (OAA). In C3 plants, the primary acceptor is RuBP, a 5-carbon compound, and the enzyme is RuBisCO.