The highest level of the hierarchy of life is the ____

a. population
b. biosphere
c. ecosystem
d. multicellular organism
e. cell


B

Biology & Microbiology

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A point mutation is when a single nucleotide gets replaced by a different one

A. true B. false

Biology & Microbiology

A type of horizontal gene transfer in prokaryotes, in which a cell takes up naked DNA without cell-to-cell contact, is

A. transduction. B. fixation. C. conjugation. D. transformation. E. replication.

Biology & Microbiology

Solutes are dissolved substances, dissolved in a liquid called a solvent.

a. true b. false

Biology & Microbiology

The Calvin cycle operates during which part of photosynthesis?

a) Only the light reaction b) Only the dark reaction c) Both light and dark reactions d) Only photosystem I

Biology & Microbiology