Question

1. choose the best answer.

alexander fleming discovered the antibiotic properties of ____
alcohol
mercury
penicillin
sulfur

1. choose the best answer.

the hebrews contributed personal cleanliness and a day of ____
fasting
prayer
exercise
rest

Explanation:

Question 3

Alexander Fleming is known for discovering the antibiotic properties of penicillin. Alcohol, mercury, and sulfur do not have their antibiotic properties discovered by Fleming in the context of this discovery.

The Hebrews contributed the concept of a day of rest (the Sabbath) along with personal cleanliness. Fasting, prayer, and exercise are not the main contribution here related to a day - based contribution as per Hebrew traditions.

Answer:

C. penicillin

Question 4