The requirement of cold weather before a particular plant process occurs (e.g., germination) is known as ____

a. the biological clock
b. vernalization
c. photoperiodism
d. biennial life cycle
e. perennial life cycle


ANSWER: b

Biology & Microbiology

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Which of the following sequences of events is most characteristic of a generalized plant life cycle? 

A. sporophyte ® mitosis ® spore ® gametophyte ® gamete ® zygote B. sporophyte ® meiosis ® spore ® gametophyte ® gamete ® zygote C. gametophyte ® meiosis ® spore ® sporophyte ® gamete ® zygote D. gametophyte ® mitosis ® spore ® sporophyte ® gamete ® zygote

Biology & Microbiology

Transcriptional regulation is considered negative when an inducer binds to and deactivates a repressor

Indicate whether the statement is true or false.

Biology & Microbiology

All prokaryotic photosynthesizers are anoxygenic.

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

Biology & Microbiology

An increase in p53 activity frequently occurs in response to

A. stimulation by growth factors. B. heat shock. C. a lack of sufficient nutrients. D. DNA damage.

Biology & Microbiology