21st Century Classroom Quizzes, Questions & Answers

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Welcome to the 21st Century classroom for biology studies. This test has been constructed to review your knowledge of various bacteria and a few viruses. In spite of their tiny size, bacteria have...

Questions: 25 | Attempts: 143 | Last updated: Mar 20, 2023

Sample Question
What is the scientific name of this bacteria?

Ebola

Epstein-Barr

Bacillus anthracis

Streptococcus pryogenes

Leptospira interrogans

Introduction To DNA And RNA Test

Welcome to the electronic science frontier of the 21st century classroom. In the past 25 years, the science of genetics has undergone major changes, both in how it is understood and how it is practiced. Using lasers,...

Questions: 30 | Attempts: 144 | Last updated: Mar 19, 2023

Sample Question
Each nucleotide in a DNA molecule consists of a:

Sulfur group, five-carbon sugar, and nitrogen base

Phosphate group, six-carbon sugar, and nitrogen base

Phosphate group, five-carbon sugar, and oxygen base

Phosphate group, five-carbon sugar, and nitrogen base