Directions How to Answer

Aptitude Test Topic: Biology

Biology test evaluate test taker's in-depth understanding of the subject.

Directions

The following are questions of Biology. Select the correct option to represent your answer.

To give the answer click/tap the option alphabet for your answer choice. for correct answer green check and for wrong answer a red cross will appear along with a button to show explanation with or without video of the question answer.

Biology: All Topics Practice MCQ

Question Statement:

Which one of the following statements is correct?

Prions are the smallest free-living cells

The cell wall of Mycoplasmas is made up of amino sugars

Viroids consist of single-stranded RNA molecules

Rickettsias lack cell wall

Explanation:

Correct Answer: C

Sol. Viroids are the smallest infectious pathogens known. They are solely composed of a short strand of circular, single-stranded RNA without protein coat. ... The unique properties of viroids have been recognized by the International Committee for Virus Taxonomy with the creation of a new order of subviral agents.

Question: 1 Test: 13 of 13 Next Test

Tests

You are taking Aptitude Test No. 13

Each aptitude test is comprised of 10 except the last test which might have fewer than 10 in some topics.

You are at question (MCQ) number 1 and Test Number 13 of Biology: All topics. To deal with Biology questions, you must take lesson on the subject. In case of science and Art subjects revise your text books and in case of general aptitude topics take lessons from the topic page.

The question: Which one of the following statements is correct? .... with options: Prions are the smallest free-living cells, The cell wall of Mycoplasmas is made up of amino sugars, Viroids consist of single-stranded RNA molecules, Rickettsias lack cell wall can be solved with the concepts and understanding of Biology.