Chapter 18, Problem 5A

Summary Introduction

Introduction:

Bacteria and the archaea are the domain of the prokaryotic organisms. They are microscopic and lack true membrane bound nucleus and other organelles.

Answer to Problem 5A

Option (A).

Explanation of Solution

Explanation for correct answer:

Option (A). Electron microscope captures the image that is created by the electron bombarded on the specimen. The electron is capable of penetrating capsule of the bacteria, which gives a complete image of the internal structure of the bacteria, in the light microscope, the capsule cannot be penetrated effectively. Hence, it is the correct answer.

Explanation for incorrect answer:

Option (B) bacteria are tiny. The bacteria are very small and cannot be seen by the naked eyes, but they are visible under light microscopes too. Hence, it is an incorrect answer.

Option (C) bacteria stun the fast-moving bacteria. The bacteria generally do not move so fast, they are generally still. Hence, it is an incorrect answer.

Option (D) bacterial organelles are small and tightly packed. The bacteria lack membrane bound organelle. Hence, it is an incorrect answer.