Two Streptococcus Pneumoniae Strains, Agent 1 and Agent 2, Are

question 1

Essay

Two Streptococcus pneumoniae strains, agent 1 and agent 2, are administered to groups of animals at different doses. Mortality rates are then measured for the animals that received each dose level of each agent. Agent 1 is found to have an LD₅₀ of 400. Agent 2 is found to have an LD₅₀ of 600. Which one is producing a capsule and which one is not? How do you know?

---

Definitions:

PKU

Phenylketonuria is a genetic disorder characterized by an inability of the body to process the amino acid phenylalanine, leading to harmful levels in the blood if left untreated.

Phenylalanine

An essential amino acid that cannot be made by the body and must be obtained from food, important for the biosynthesis of other proteins and molecules.

Essential Amino Acids

Amino acids that cannot be synthesized by the body and must be obtained from the diet, crucial for various bodily functions.

Eugenics Movement

A historical campaign aimed at improving the genetic quality of the human population through selective breeding and, at times, the sterilization of individuals deemed genetically undesirable.