Which one of the following is NOT required for photosynthesis to take place? 

A. enzymes
B. ATP
C. oxygen
D. carbon dioxide


C. oxygen

Biology & Microbiology

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Enhancement of a response to a stimulus by first presenting a strong or novel stimulus is called____

Fill in the blank with the appropriate word.

Biology & Microbiology

Is this statement true or false? Body cells may inherit three or more of each type of chromosome characteristic of the species, a condition called polyploidy

Indicate whether the statement is true or false

Biology & Microbiology

In a 3-D double helix model of DNA, the center consists of ____

a. deoxyribose sugars b. hydrogen bonds c. nucleotide base pairs d. phosphate groups e. sugar–phosphate backbones

Biology & Microbiology

Which protein is defective in cases of Duchenne muscular dystrophy?

a. dystrophin b. albumin c. fibrillin d. fibrinogen e. fibrin

Biology & Microbiology