Which of the following is NOT found in mitochondria and prokaryotes?

a. Circular chromosome
b. 70S ribosomes
c. Cell wall
d. Binary fission
e. ATP-generating mechanism


Ans: c. Cell wall

Biology & Microbiology

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The process whereby genetic exchange occurs by way of viruses carrying genes from one microbe to another is known as:

A. conjugation B. transduction C. transformation D. transubstantiation E. interchange

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In which coastal zone would you find a large number of crabs and mangrove trees along with moist soil?

A. benthic B. littoral C. intertidal D. neritic E. pelagic

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Which of the following is not a possible explanation for the origin of autoimmune diseases?

A. Forbidden clones B. Sequestered antigens C. Molecular mimicry D. The gut microbiome E. All the choices are currently being investigated as possible explanations.

Biology & Microbiology

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, and a head; has no body cavity or segmentation; and has bilateral symmetry. To what phylum does this animal belong?

A) Cnidaria B) Mollusca C) Annelida D) Platyhelminthes E) Porifera

Biology & Microbiology