All organisms that are photosynthetic are oxygenic.

Answer the following statement true (T) or false (F)


False

Biology & Microbiology

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You digest DNA from the frog Xenopus laevis with the enzyme NotI that produces sticky DNA ends. You can ligate your DNA to:  

_____  blunt AluI ends from Xenopus laevis. _____    sticky NotI ends from Xenopus laevis. _____  blunt AluI ends from bacteria. _____  sticky NotI ends from bacteria. _____  sticky EcoRI ends from Xenopus laevis. _____  sticky EcoRI ends from bacteria.

Biology & Microbiology

Why is it necessary to take special safety precautions when using radioactivity?

A. Radioactive substances will ionize cells. B. Radioactive substances have the potential to cause damage to living cells. C. Radioactive substances decay. D. Radioactive substances will perforate plasma membranes.

Biology & Microbiology

Modern invertebrates first appear in the fossil record during the

A) Cambrian period. B) Silurian period. C) Precambrian era. D) cyanobacteria. E) Devonian period.

Biology & Microbiology

Fibrinogen is __________.

a. a blood protein that is converted to fibrin to form a blood clot b. a blood protein that escorts lipids through the circulatory system c. a cell fragment involved in the blood-clotting mechanism d. a cell involved in fighting microorganisms e. a protein involved in oxygen transport

Biology & Microbiology