Drugs known as beta-lactams interfere with bacterial (DNA/folic acid/cell wall) synthesis.
Fill in the blank(s) with the appropriate word(s).
cell wall
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When plants colonized land, they dramatically changed conditions on Earth by altering the global ____ cycle
a. carbon b. hydrologic c. nitrogen d. phosphorus e. sulfur
Glycolysis depends on a continuous supply of:
a. oxygen b. pyruvate c. NAD+ d. NADH e. H2O
Systolic pressure measures the force exerted by blood against the wall of a blood vessel during ventricular contraction.
a. true b. false
The biological species concept cannot be applied to fossils. Which alternate approach to identifying species would be most useful for classifying fossil organisms?
A) an approach based on use of reproductive barriers B) an approach based on genetic history C) an approach based on measurable physical traits D) an approach based on molecular biology