In the ocean, ________ are present in the highest numbers

a. algae
b. viruses
c. Archaea
d. bacteria


Answer: B

Biology & Microbiology

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Which of the following components is not associated with the primary cell wall?

A) cellulose microfibrils B) hemicelluloses C) pectins D) glycoproteins E) lignins

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The experiments that clearly distinguished DNA and not protein as the hereditary material were conducted by _____

a. Pauling b. Hershey and Chase c. Griffith d. Watson and Crick e. Avery

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In extremely cold regions, woody species may survive freezing temperatures by _____

A) emptying water from the vacuoles to prevent freezing B) decreasing the numbers of phospholipids in cell membranes C) decreasing the fluidity of all cellular membranes D) increasing cytoplasmic levels of specific solute concentrations, such as sugars

Biology & Microbiology

Methods of microbial control called ________ arrest the growth of microbes

A) microbicial B) microbistatic C) sanitizing D) degerming E) antiseptic

Biology & Microbiology